US3030009A - Combined typewriter and marking mechanism - Google Patents

Description

April 17, 1962 R. NEIDHARDT ET AL 3,030,009

COMBINED TYPEWRITER AND MARKING MECHANISM 6 Sheets-Sheet 1 Filed March 4, 1957 INVENTOR. RvJa NeiJImrJl i Y Heinz WIaJm-c zak W4. M

April 17, 1962 R. NEIDHARDT ET AL 3,030,009

COMBINED TYPEWRITER AND MARKING MECHANISM Filed March 4, 1957 6 Sheets-Sheet 2 INVENTOR. Hula]? Nell/ban I BY Hfi lvladarcz April 17, 1962 R. NEIDHARDT ET AL 3,030,009

COMBINED TYPEWRITER AND MARKING MECHANISM Filed'Maich 4, 1957 6 Sheets-Sheet 3 INVENTOR- Half NdiJh t 4 By aJamul' M April 1952 R. NEIDHARDT ET AL 3,030,009

COMBINED TYPEWRITER AND MARKING MECHANISM Filed March 4, 1957 6 Sheets-Sheet 4 INVENTOR. R d, NeiJluwJ By Heinz Wlmkmzn April 17, 1962 R. NEIDHARDT ET AL 3,030,009

' COMBINED TYPEWRITER AND MARKING MECHANISM Filed March 4, 1957 6 Sheets-Sheet 5 INVENTOR. "0J0 d Hein z Molar: k

April 17, 1962 R. NEIDHARDT ET AL 3,030,009

COMBINED TYPEWRITER AND MARKING MECHANISM Filed March 4, 1957 6 Sheets-Sheet 6 INVENTORS BY in WMMa d-M? 3,036,009 QGMBINED TYhEWRITER AND MARKING MECHANEM Rudolf Neidhardt, Nurnherg, and Heinz Wlodarczak, Wedei, near Hamburg, Germany, assignors to Triumph Werke Nurnberg A.G., Nurnberg, Germany Filed Mar. 4, 1957, Ser. No. 643,7d6 Claims priority, application Germany Mar. 5, 1956 1d Ciaims. (ill. 234-35) The present invention relates to a combined typewriter and marking mechanism, and more particularly to a mechanism of this type which is adapted to perform all functions of a standard typewriter while the marking de vice is disconnected while upon connection of the marking device, only a limited number of graphic characters including letters, numerals and symbols, are simultaneously coded by the marking device and printed by the printing means of the typewriter mechanism.

The combined typewriter and marking devices according to the known art are only capable of printing the limited number of graphic characters which can be coded by the marking device. In other words, the typewriter part of the known devices are capable of printing only upper case letters or lower case letters since due to the international code the available coded symbols are insufiicient for representing lower case and upper case charactors.

it is the object of the present invention to overcome the disadvantages of known combined typewriter and marking devices, and to provide an apparatus which is capable of being used as a standard typewriter, when operation of the marking device is not desired. I

it is another object of the present invention to provide an apparatus which is capable of printing uppercase and lower case letters and upper case and lower case numerals and symbols when the marking device is disconnected, and to print only upper case graphic characters, or only lower case graphic characters, when the marking device is operated;

Another object of the present invention is the provision of simple manually operated means by which the apparatus can be selectively shifted from a condition in which it operates as a standard typewriter, and a condition in which the apparatus operates as a combined typewriter and perforator for perforating tape. 7

Another object of the present invention is to provide a minimum number of control keys for the apparatus.

Another object of the present invention is .to use the control keys which are used during simultaneous printing and marking operations for selectively locking the keys associated with numerals and symbols and the keys associated with letters, as shift keys when the apparatus operates as a standard typewriter.

A further object of the present invention is to lock all parts of the typewriter which are not used while the marking device operates, so that the marking device can be operated in a foolproof manner,

With these objects in view, the present invention mainly consists in a combined typewriter and marking mechanism which is adapted to operate as a teletypewriter which simultaneously prints and codes letters, numerals and symbols, but can be shifted to a position in which the marking device is disconnected, and the printing means are adapted to print all graphic symbols used in a stand ard typewriter. In accordance with a preferred embodiment of the present invention printing means are provided for printing graphic characters and are shiftable between a lower case position and an uppercase position for printing different groups of graphic characters.

The printing means include a first set of printing members for printing upper case and lowercase numerals and symbols and a second set of printing members for printing upper case and lower case letters. The printing means are preferably type levers as used in standard typewriters, and either the type levers, or the carriage of the machine, is shifted for producing imprints of upper case characters or lower case characters, respectively.

A marking device, such as a perforatorfor perforating tape according to the international code is provided in the machine, and is connected by a coupling to the electric motor which drives the machine. While the apparatus is used as a standard typewriter, the coupling is disconnected so that the perforator is not driven.

A keyboard including a first set of key members associated with numerals and symbols and a second (setof key members associated with letters controls the printing means and the marking device.

A manually operated means is provided for shifting the machine from standard typewriter operations to simul: taneous printingand perforating operations. The manually operated means shifts first locking means to a position locking the printing means either in upper case position or in lower case position, and shifts second locking means to a first locking position in which the key memhers associated with numerals and symbols are locked. The second locking means are movable to a second lock; ing position, in which the key members associated with letters are locked, and are operated by control key means to move between the first locking position and the second locking position whenever required during operation of the machine as a keyboard controlled marking device.

The shifting means which shifts the printing means between upper case position and lower case position are controlled by the same control key means when the machine operates as a standard typewriter. During operation of the perforator, the printing means are shifted to the upper case position. Lost-motion means connect the shifting means with the control key means and with the. mark ually operated means so that the control key means can be operated during perforator operations for locking the two sets of key members without interfering with the printing means which are locked in upper case position or in lower case position by the first locking means.

The key which acts as back spacing key during normal typewriter, operations is operatively connected to the second locking means during perforator operations so that its actuation has an eifect corresponding to the cited of the control key means.

The locking key which is provided in standard typewriters for simultaneously shifting the printing means to upper case position and locking the printing means in this position, is provided in the apparatus of the present invention for use during the operation of the machine. as a standard typewriter. This locking key is locked during operation of the apparatus as a combined typewriter and perforator, so that it cannot be actuated. Preferably a blocking member is provided which in operative position cooperates with the key levers in such a manner as to permit actuation of a single key only as is required during perforator operations. During the operation of themachine as a standard typewriter, the blocking means is shifted to an inoperative position. The machine according to the present invention is so constructed that actuation. of a single manually operative lever will shift the machine from standard typewriter operations to simultaneous printing and perforating operations. The single appended claims. The invention itself, however, both as to its construction and its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings, in which:

FIG. 1 is a perspective view of a combined typewriter and perforator mechanism in accordance with the present invention;

FIG. 2 is a side view of a control device according to the present invention, partly shown in section, and illustrates a position of the control device in which the perforator is inoperative and the machine is used as a standard typewriter;

FIG. 3 is a side view of the control device according to the present invention, partly in section, illustrating a position in which the perforator is operative;

FIG. 4 is a side view of a detail, partly shown in section;

FIG. 5 is a side view, partly in section, of the detail shown in FIG. 4 illustrating the elements in another operational condition;

FIG. 6 is a plan view of the arrangement shown in FIG. 4;

FIG. 7 is a side view of another detail, partly shown in section;

FIG. 8 is a side view of the arrangement shown in FIG. 7, partly shown in section, and illustrating another operational position;

FIG. 9 is a plan view of the arrangement shown in FIG. 7;

FIG. 10 is a sectional view illustrating another detail of the control device according to the present invention;

FIG. 11 is a side view, partly in section, illustrating another detail of the control device of the present invention; and

FIG. 12 is a fragmentary sectional side view of a combined typewriter and perforator apparatus.

Referring now to the drawings, and particularly to FIG. 1, a combined typewriter and perforator mechanism according to the present invention includes a typewriter part 1 which corresponds to the conventional typewriter, and a perforator 2. A keyboard having keys 26 is provided for the operation of the printing means of the typewriter as well as of the perforator. Control keys 4 and 5 are provided which will be described in greater detail hereinafter, and which serve during normal typewriter operations as shift keys. A manually operated lever 3 is provided which is shiftable between two positions. In one of these positions, the perforator is disconnected, and the machine is used as a conventional typewriter. In the other position of the lever 3, the perforator 2 is connected and driven by the electric motor of the machine so that upon operation of the keys the respective characters are simultaneously printed by the printing means and perforated in a tape in coded form. Apparatus of this type is well-known and, for example, disclosed in the US. Patent 1,965,572 and in the US. Patent 2,543,435. The present invention is concerned with an improvement of combined typewriter and perforating apparatus, as will be explained hereinafter.

The construction of a known typewriter mechanism to which the present invention is advantageously applied, is shown in FIG. 12. The actuating drum 103 of the typewriter rotates in direction of the arrow. When a key 26 is depressed, a coupling member 102 acts on a lever 104 and turns it together with another lever 105, to which it is articulated, until a portion of lever 104 engages the rotating actuating drum 103. Drum 103 moves by frictional engagement the lever 104 until it is stopped by stop member 116. Lever 105 turns into the position shown in broken lines together with lever 104, and elfects through link 106 turning movement of lever 107 which acts through a link 108 on the type lever 109 to move the type lever and the type toward the platen 100.

Each lever system 104 and 105 is associated with one of the keys 26, and also associated with an angular lever 111 whose end abuts against the end of lever 105. A spring urges lever 111 against lever 105. The other arm of lever 112 cooperates with a set of combination bars of the conventional construction used in teletype apparatus. When lever 105 moves into the position shown in broken lines under control of a key 26, lever 111 is displaced and assumes the position shown in broken lines in which one of its arms moves into slots provided in the combination bars 112.

A bar 113 common to all levers 111 is fixedly connected to a lever 114 so that lever 114 turns in a position shown in broken lines when any of the levers 111 turns. Lever 114 is connected to an arm 115 which acts on a one-revolution coupling 117 provided on the drive shaft 118, so that shifting of arm 115 effects coupling of a cam 121 which in a conventional manner effects, through a linkage, shifting of all combination bars 112 until the combination bars 112 are blocked in a position determined by the respective turned and actuated lever 111. Thereby the combination bars 112 are moved into a position representing the graphic character associated with the respective actuated key 26. At the same time, the punching means are operated from cam 121 so that in a tape a perforation is made representing the graphic character also represented by the combination position of the combination bars 112 and by the depressed key 26.

The drive shaft 118 is coupled to the main drive shaft of the machine, when the coupling member 14 engages the coupling member 14a, and moves coupling member 14a to the left as viewed in FIG. 2. It is therefore apparent that depression of any of the keys 26 will not only result in actuation of the respective associated type lever 109 by the rotary actuating drum 103, but also in movement of the respective associated lever 111 to a position determining the combination position of the combination bars 112, whereupon the perforator automatically effects in a tape a perforation representing the respective graphic character.

The manually operated lever 3 is mounted in the frame 6 of the machine turnable about a pin 6a, and controls several linkages for simultaneously performing several operations.

A bar 8 is connected by a pin 7 to the lever 3 and by a pin 9 to a lever 10 which is turnable about a pin 11 fixed to the frame of the machine. A coupling bar 13 is connected by pin 12 to lever 10 and carries the coupling member 14 which upon engagement of the other coupling member 14a, renders the perforator operative. The arrangement for driving the perforator from an electric motor is known, and not an object of the present invention. When the two coupling members 14 and 14a are separated as shown in FIG. 2, the perforator will not operate. When the two coupling members are in engagement, the perforator will be rendered operative and will be controlled by the keys 26 to perforate a tape in accordance with a code, while simultaneously a corresponding text is typed by the typewriter 1. The perforated tape produced by the perforator 2 is used for teletyping purposes.

An arresting member 18 is mounted on the frame of the machine for pivotal movement about a pin 19 and is connected by a spring 20 to the bracket 53 on the frame of the machine 6b. The arresting member 18 has two recesses 17 which are engaged by a roller 16 controlled by lever 3. In the inoperative position of lever 3 the roller 16 engages the upper recess 17, and in the operative position of lever 3 shown in FIG. 3 the roller 16 engages the lower recess 17 whereby lever 3 is arrested in each position.

A pin 21 is fixedly connected to lever 3 and engages a recess in the forked end of a member 23 which is fixed on a shaft 22. Shaft 22 is mounted for turning movement in the frame of the machine and carries a blocking aoaopee member 25. When the lever 3 is shifted from the position shown in FIG. 2 to the operative position in FIG. 3, shaft 22 is turned and the blocking member turns from the position 25a shown in broken lines in PEG. 2 to the position 25 shown in FIG. 3. The two positions of the blocking member 25 are also clearly shown in FIGS. 4 and 7. The blocking member 25 has a channel in which a set of rollers 24 are mounted and has projections 54, best seen in FIG. 9, which cooperate with the key levers of the machine. In the operative position of the blocking member shown in solid lines in FIG. 7, only a single key, such as key 4, 5, 25, or 27 can be depressed, whereas in the inoperative position 25a of the blocking member 25, at least two keys 4 and 26, or and 26 can be simultaneously depressed and operated as will be described hereinafter in detail.

A member 29 is connected by a pin 28 to the bar 8,

so that upon shifting of lever 3 member 2? is also shifted. The other end of member 29 has a slot 3t? into which the pin 31 projects. Pin 51 is fixed on an angular lever 32 which is pivotable about a pin 33. The other arm of lever 32 is pivotally connected to a member 86 which controls the support 35 of the type levers 35 of which only one is shown. When the member 29 is shifted, the type levers 35 are raised to the position shown in FIG. 3 which corresponds to shifting from a position in which lower case characters are printed to a position in which upper case characters are printed. The type levers or printing means of the machine include like in any other standard typewriter, a first set of printing members for printing letters, and a second set of printing members for printing numerals and symbols. For example, in the raised position of the printing members 35 associated with letters, upper case letters, that is capital letters will be printed.

Member 29 has a transverse arm 29 which is pivotally connected by a pin 79 to a link btl. Link 5f: is connected by a pin 81 to a locking means including a lever 32., and a latch 84 which is connected to lever 82 by a spring 53. The locking means 82, S4 is pivotally mounted on a fixed bracket 35. When member 29 is shifted to the position shown in FIG. 3, the printing means are not only shifted to upper case position, but also locked by the latch 84 in this position and remain locked until the lever 3 is again shifted to the position shown in FIG. 2 The spring 34 tends to turn the angular lever 29 into the position in which the printing means are in lower case posi tion.

The lever 3 carries a pin 44 which cooperates with a holding arm 45 which is fixed on the shaft 62. in the position of lever 3 shown in FIG. 2, the holding arm 45 is held by pin 44, and in the position of FIG. 3 the pin 44 releases holding arm 45 so that shaft 62 can turn under the action of a spring 47 connected to a locking lever er which is also fixed on shaft 62 as clearly shown in FIGS. 4 and 5. The locking lever at has a locking projection of which engages an abutment 6t} on the transfer lever 55 when the operating lever 3 is shifted, to the position shown in FIG. 3 at the beginning of an operation.

A locking bar 46 is fixedly connected to shaft 62 and turns with the same. In the inoperative position of lever 3 shown in PEG. 2, the locking bar 46 is in the position 46a. in the operative position of lever 3, the locking bar is in the first locking position 46b. The locking bar 46 can further turn into the position 460 shown in FIG. 5 when the abutment 6t) is lowered together with lever 55, as will be described in greater detail hereinafter.

The three positions of the locking bar 46 are also shown in MG. from which it will be apparent that in the position 46b the key levers 260 are locked and in the position 460 the key levers 26b are locked. The key levers 26c are associated with the set of printing members 35 which print numerals and symbols, and the key levers 26b are associated with the other set 'of printing members 35' which print letters. The spring 47 tends to turn the locking lever all in clockwise direction as viewed in FIGS. 4 and 5, but is only effective when the lever 3 is moved to operative position since otherwise the entire shaft 62 is prevented from turning movement by the engagement between the pin 44 and the holding arm 45.

Another locking member 4? is secured to the bar 8 by a screw 43 and has a locking projection 55. Locking member 49, 5t cooperates in shifted position with an arresting member for the shift keys 4 and 5 which is only used during normal typewriter operations as will be described hereinafter in greater detail with reference to FIG. 11

Two shift keys 4 and 5 are provided on opposite sides of the keyboard as shown in FIG. 1. During operation of the machine as a conventional typewriter, the two shift keys 4 and 5 produce the same results upon depression, namely the shifting of the machine from lower case position to upper case position. However, when the manually operated lever 3 is shifted to the position shown in FIG. 3 in which the perforator 2 becomes operative, the two shift keys 4 and 5 obtain a different function, and are operated independently to act as control keys in a manner which will be described hereinafter. It will be understood that during the operation of the perforator 2, the printing means are shifted to upper case position and locked in upper case position by the locking means 54, so that the normal shifting function of the shift keys 4 and 5 is no longer required.

The control key 4 is associated with the key levers and printing levers which produce the printing of numerals and symbols, and will be referred hereinafter as FIG. key. The control key 5 is associated with the key levers and printing levers which print letters, and will be referred to hereinafter as LET. key. As pointed out above, such distinction is only present during operation of the machine as a combined printing and perforating apparatus.

The control key 4 and the control key 5 are turnably mounted on a shaft 41. The forward ends of the control keys 4 and 5 are supported by springs 52 on the machine frame 6b. The control key 4 has a lever 4' which rests on a lateral projection 58 of a transfer lever 55 which is fixedly connected to shaft 41, as best seen in FIGS. 46. The projection 58 ends in a bumper 59 whose function will be described later on.

The control key 5 has a lever 5' which rests on a pin 65 of a transfer lever 56 which is fixedly connected to the shaft 41. Screws 57 attach the transfer levers 55 and 56, respectively, to the shaft 41. The transfer lever 55 has another lateral projection 60 which constitutes an abutment for the locking portion 61' of the locking lever of, as previously described. The spring 47 urges the locking lever 61 against the abutment of of the transfer lever 55 so that when the transfer lever is moved from the position shown in FIG. 4 to the position shown in FIG. 5, the locking projection til snaps over the abutment of and locks the transfer lever 55 in its lower posi tion, while the shaft 41 is turned, and held in turned position. FIG. 5 shows the control key 4 again released and returned by spring 52 to its normal position, but it will be understood that the transfer lever 55 is moved r from the position shown in FIG. 4 to the position shown in FIG. 5 by depression of the control key 4. Consequently, the depression of the control key 4 will result in turning of the locking bar 45 from the position 4615 in which the key levers 26c and the printing levers for printing figures are locked, into the position 46c in which the key levers 26b and the printing levers associated with letters are locked, while the printing members associated with figures, numerals and symbols are unlocked.

Shaft 62 is also controlled by a control member 66 which is connected to shaft 62 for turning movement therewith. Control member 66 has a projecting pin 67 which cooperates with the control key 5, and a pin 68 which cooperates with the lever 27' of the back spacing key 27. The back spacing key 27 shifts in a known manner the carriage of the machine for one step back. The control member 66 is movable with shaft 62 through three positions, the position 66a shown in FIG. 7 in broken lines corresponding to the position 46a of the locking bar 46, the position 66b shown in solid lines in FIG. 7 corresponding to the position 46b of the locking bar, and the position 660 shown in FIG. 8 corresponding to the position 460. It will be understood that the three positions of the control member 66, respectively correspond to the three positions 61a, 61b and 61c of the locking lever 61 as shown in FIGS. 4 and 5.

When the manually operated lever 3 is in its inoperative position shown in FIG. 2, the shaft 62 is in an inoperative position in which the locking lever is in the inoperative position 61a, the locking bar is in the inoperative position 4611, and the control member is in the inoperative position 66a. When in this position either the control key or the control key 4 is depressed, the respective associated transfer lever 56 or 55 is turned together with shaft 41. As best seen in FIGS. 2 and 3, a lever arm 39 is fixedly connected to shaft 41 and turns with the same. A spring 51 is connected to a projecting portion of lever arm 39 and also to the frame of the machine so that the lever arm 39 tends to turn in counterclockwise direction as viewed in FIGS. 2 and 3. Depression of any one of the two control keys 4 and 5 will turn shaft 41 and lever 39 in clockwise direction against the action of spring 51. Lever arm 39 has a projecting pin 43 which moves between two stops 42 for limiting the angular movement of lever arm 39. A shifting bar 38 is pivotally connected by a pin 40 to the lever arm 39 and has at its remote end a slot 37 into which a pin 36 of the angular lever 32 projects. In the position shown in FIG. 2, the pin 36 is at the right hand end of slot 37 so that turning of the lever arm 39 in clockwise direction will produce turning of the lever 32 and raising of the type levers 35'.

In the position of the lever 3 shown in FIG. 2, the combined typewriter and perforator mechanism of the present invention operates as a standard typewriter. A set of key levers 26b is associated with letters, and a set of key levers 26c is associated with figures. The two sets of key levers are respectively associated with two sets of printing members 35' each of which has an upper case character and a lower case character. In the position of FIG. 2, the keys of the typewriter can be operated and small letters and figures or symbols can. be typed as in any other standard typewriter. When any one of the two control keys 4 or 5 is depressed, the shaft 41 is turned in clockwise direction so that the lever arm 39 shifts the shifting bar 38 farther to the left in FIG. 2 whereby the angular lever 32 is turned about pin 33 and raises the type levers 35'. The raised position of the type levers 35' which is thus obtained corresponds to the position of the type levers 35' shown in FIG. 3, but the other elements shown in FIG. 2 remain in the position shown in FIG. 2. This is possible since the second pin 31 on lever 32 moves to the left in FIG. 2 in the slot 30. Upon release of the respective previously depressed control key 4 or 5, the lever arm 39 turns under the action of spring 51 in counterclockwise direction and withdraws the shifting bar 38 to the right so that the printing members 35' return to the lower case position under the action of spring 34.

From the above description of the shifting means it will become apparent that during the operation of the machine according to the the present invention as a standard typewriter, the control keys 4 and 5 operate in the manner of standard shift keys, each of the shift keys 4 and 5 operating independently of the other shift key to shift the printing means from lower case position to upper case position.

While in the illustrated embodiment of the present invention the shifting means are shown to shift the type levers, it will be understood by persons skilled in the art that in the same manner the shifting means may shift the carriage of the machine so that the printing means will print upper case characters. As in any standard typewriter, a locking key 69 is provided for locking the printing means in upper case position until the respective associated shift key is again depressed. In the illustrated embodiment of the present invention the locking key 69 is associated with the shift key 4 and with the related transfer lever 55 as best seen in FIG. 11. The locking key 69 has a vertical bar 69 provided with two slots 73 which respectively engage two fixed pins '72 for guiding the locking key 69 in vertical direction. The bar 69' has a lateral projection 73 and a projecting pin 78. A three-armed locking lever 75 has a first arm 75a with an abutment 74 cooperating with projection 73. The second arm 75b is connected to a return spring 77 which tends to turn the locking lever '75 in counterclockwise direction. The third arm 75c cooperates with the bumper or abutment 59 on the projection 53 of the transfer lever 55. The pin 78 of the bar 69 of the looking key 69 cooperates through lever 4' with the transfer lever 55 which is best seen in FIG. 6. When the locking key 69 is depressed, the pin 73 engages the lever 4- which turns about shaft 41 and then engages transfer lever 55 which turns together with shaft 41 so that shaft 41 is turned against the action of spring 51 and shifts the printing means to upper case position in the same manner as if any of the shift keys 4 or 5 would have been depressed. However, when the locking key 69 is depressed, the abutment 74 of the locking lever 75 snaps over the projection 73 and holds the locking key 69' in operative position together with the transfer lever 55 and the shifting means associated therewith so that the printing means are locked in upper case position.

When in this position the shift key 4 is slightly depressed, the abutment 59 engages arm 75c of the locking lever 75 and turns the same in clockwise direction so that the abutment 74 releases the projection 73 whereupon the locking key 69 returns to its inoperative Position.

FIG. ll also shows the bar 8 which is connected to the lever 3, and the locking means 49 with its projection 50. The position shown in solid lines corresponds to the inoperative position of the lever 3 as shown in FIG. 2. When the bar 8 is shifted by operation of lever 3 to render the perforator to operative, the projection 50 is shifted to the position shown in broken lines in FIG. 11 and is located underneath the end of the bar 69. Consequently the locking key 69 cannot be depressed when the lever 3 is shifted to operative position.

In the inoperative position of lever 3 shown in FIG. 2, the blocking member 25 is in the position 2511 so that any one of the shift keys 4 and 5, or both, can be simultaneously depressed with a key 26 of the keyboard as is required during normal typing operations.

By shifting the lever 3 to the operative position shown in FIG. 3, the machine is transformed into a combined typewriter and perforator mechanism as used for teletyping, and for such operation the printing means are required to print only upper case letters and upper case figures and symbols since the international teletype code permits the perforator to code only 64 graphical characters. The types representing the numerals are arranged I on type levers 26a in the upper case position. It would also be possible to print only lower case characters, but it is conventional to use the upper case characters during perforating operations.

When the lever 3 is shifted by a manual operation to its operative position shown in FIG. 3, the following operations take place.

spac ous (1) The roller 16 snaps into the lower recess 17 of the arresting lever 18. The bar 8 is shifted to the left, that is in rearward direction with respect to the keyboard, and shifts the coupling 14 14a into coupled position so that the perforator 2 is driven in a known manner from the electric motor of the machine and is rendered operative.

(2) The bar 29 is shifted by bar 8 and moves to the left. When the pin 31 engages the right hand end of slot 39, the shifting lever 32 starts turning in clockwise direction and raises through member 86 the type levers 35 to upper case position. In this position capital letters are printed by the type levers associated with letters, and the required numerals and symbols are printed by the type levers associated with numerals and symbols.

(3) The arm 29' of the bar 29 turns the locking means 32, 84 into the position shown in FIG. 3 in which the projection 84 is located under the projection 86' of member 86 so that the printing means are locked in the respective position thereof to which they were shifted. Such position is consequently maintained as long as the lever 3 is shifted to operative position and the perforator is connected to the typewriter mechanism.

(4) The pin 44 of lever 3 releases the holding arm 45 so that the spring 47 turns locking lever 61 until its projection 61' engages the projection 6!} of the transfer lever 55 as shown in FIG. 4. The shaft 62 turns with lever 61 so that the locking bar 46 turns from position 46a to position 4612 in which the key levers 26b are free and the key levers 26c are locked. In this position, only the key levers associated with letters can be depressed, and only letters can be printed by the printing means and coded by the perforator, respectively. At the same time, member 66 turns into the position 66b shown in FIG. 7 in which its pin 67 is located opposite the lever of the control key 5.

(5) The pin 21, turning with lever 3, turns member 2 3 so that shaft 22 turns for moving the blocking bar 25 from the position 25a to the position shown in solid lines in FIG. 7. In this position of the blocking bar only a single key can be depressed since the rollers 24 are so spaced as to permit only a single projection of a key lever to move between two adjacent rollers 24. Consequently, the control keys 4 and 5 cannot be simultaneously depressed, and moreover, it is not possible to depress one of the control keys 4 and 5 while a key as is being depressed, as is required during normal typewriter operations. The shifting functions of the control keys 4 and 5 are no longer desired during operation of the perforator, since the printing means are locked in one position. The control keys 4 and 5 serve now a different purpose, and must not be held depressed wlu'le another key 26 is depressed.

(6) Member 49 moves together with bar 8 until its abutment 50 is located underneath the locking key lever bar 69 as shown in broken lines in FIG. 11. Consequently it is not possible to actuate the locking key 6? during operation of the perforator since the shifting action of the locking key 69 is not desired during perforator operations.

From the above description of the function of the lever 3 it will become apparent that when lever 3 is shifted to operative position, the perforator 2 is rendered operative, the control keys 4 and 5 have been deprived of their shifting function, and the letter keys 2612 are ready for operation, whereas the figure keys 260 are locked.

The control key 4 serves now the purpose of shifting the mechanism to a position in which the key levers 26c associated with figures and symbols are operative, and the control key 5 serves now the purpose of shifting the mechanism back into a position in which the key levers 26/) associated with letters are operative. According to the international teletype code, 32 hole combinations are available, which however are used for two purposes, namely either for letters, or for figures and symbols.

Therefore, it is necessary to indicate Whether the perfo'- rations refer to letters, or to figures and symbols.

When key 5 is actuated, a letter hole combination is marked on the tape to indicate that the following hole combinations express letters. (in the other hand, when key 4 is actuated, a figure hole combination is marked on the tape to indicate that the following hole combinations express figures or symbols. These control hole combinations produced by keys 4 and 5 are not represented by typed symbols or characters, but keys 4 and 5 effect locking of the respective group of type levers which are not used.

While the device is set to figure marking, the actuation of a letter key would produce a coded perforation which would later on wrongly read out as a figure assigned to this coded perforation. Such errors are prevented by locking the type levers which are not to be used.

When the lever 3 has been shifted to its operative position, the key levers 26b which are associated with letters can be operated so that at the same time the perforator 2 codes the respective letters, while the printing means print the respective upper case letters. In the event that in this position the control key 5- is depressed due to an error made by the operator, the transfer lever 56 is turned together with the shaft 41. The shifting bar 33 is shifted to the left by the lever arm 39, but the pin 36 is not influenced since the slot 357 permits movement of the shifting bar 38 Without any effect on lever 32. Consequently, no shifting operation takes place, and the printing means 35, 35 remain locked in upper case position.

At the same time, the pin 67 is engaged by lever 5, and member 66 turns shaft 62 in counterclockwise direction. Shaft 62 returns immediately to its previous position upon release of the control key 5, and the temporary turning of shaft 62 has no influence on the operation, since no other key 26 can be depressed simultaneously with the control key 5 due to the blocking bar 2.5. Upon release of the control key 5, the spring 51 returns lever arm 39 and shifting bar 38 to initial positions.

When it is now desired to perforate and print figures or symbols, the control key 4 is depressed. Upon depression of the control key 4, the following operations take place:

l) The abutment at} of the transfer lever 55 is lowered to the position shown in FIG. 5, and the projection 61 of the locking lever 61 snaps over the projection 66 and holds the transfer lever 55 in the lower position shown in FIG. 5. The locking bar moves with locking lever 61 and shaft 62 to the position 460 in which the key levers Z61) associated with letters are blocked, as is clearly shown in FIG. 10, while the key levers 26c associated with figures are unlocked.

(2) Member 66 turns in clockwise direction with shaft 62 so that the pin 67 is moved to a position located underneath the key lever 5', and the pin 68 is located underneath the lever 27 of the back spacing key 27.

V (3) At the same time shaft 41 is turned by the transfer lever 55 whereby the members 39 and 3d are shifted without any effect as previously described.

In this position of the mechanism, the key levers 260 can be operated to simultaneously actuate the printing means to print figures and symbols and to actuate the perforator to perforate in a tape the respective characters in coded form. Key levers 26b are blocked, so. that only figures and symbols can be typed and marked on this tape.

When it is again desired to print and perforate letters, the control key 5 is depressed, whereupon the following operations take place:

The control key 5 engages the pin 67 in the position of FIG. 8, and turns through member 66 shaft 62 in counterclockwise direction. The locking lever 61 is turned to the position 61a illustrated in broken lines in FIG. 4 against the action of spring 47. The locking bar 46 returns from the position 460 to the position 4612 so that the letter keys 26b are released, and the figure keys 26c are blocked. The recess 64 of the locking lever 61 and the projection as release the projection 60 of the transfer lever 55 so that the transfer lever 55 turns together with shaft 41 in counterclockwise direction until the projection 58 again engages the key lever 4. The elements are again in the position shown in FIG. 4 in which the projection 61 abuts against the abutment 60. During depression of the control key 5, the lever engages pin 65 and turns the transfer lever 56 and thereby the shaft 41 temporarily in clockwise direction resulting in an inefiective shifting of the shifting bar 38.

When the back spacing key 2.7 is depressed instead of the control key 5 while the mechanism is in the position in which figures and symbols are printed and perforated under control of the key levers 2611, the pin 68 of member 66 is engaged by the lever 27' of the back spacing key 27, and the mechanism is shifted to letter printing and perforating position as described with reference to the operation of the control key 5. This conforms to the general rules applied to combined perforator and printing mechanisms which require that after operation of the back spacing key the letter printing and perforating position is assumed by the machine, while the keys and key levers 260 for operating the figures are blocked.

The locking key 69 which during normal typewriter operations actuates and locks the shifting means, cannot be operated during perforating operations since the projection 5t locks the locking key 65 in the position shown in broken lines in FIG. 11. Regardless of whether key 4 or key 5 is operated, type lever support 35 and type levers 35 remain locked in upper case position by locking means 82, 84 as shown in FIG. 3.

When it is desired to disconnect the perforating mechanism and to use the machine as a standard typewriter, the lever 3 is shifted from the operative position shown in FIG. 3 to the inoperative position shown in FIG. 2 resulting in a reversal of the operation described with respect to the shifting of lever 3 to operative position.

The locking means 82, 84 releases member 86 and remains in the inoperative position shown in FIG. 2 as long as normal typewriter operations take place.

The locking bar 45 is turned to position 46a against the action of spring 47 and is inoperative.

The blocking bar 25 is shifted to position 25a and is inoperative so that a shift key 5 or 4 can be depressed simultaneously with a key 26.

At the same time the member 49 is shifted to the position shown in solid lines in FIG. 11 so that the locking key 69 can be operated again.

The bar 3 is shifted and releases the coupling 14, 1401 so that the perforator is no longer driven from the motor of the machine.

The lever 32 and the shaft 41 are again in the position shown in FIG. 2, so that the control keys 4 and 5 act as shift keys when depressed. When the shift keys 4 and 5 are not depressed, the typewriter types lower case letters and corresponding lower case figures and symbols. Upon depression of any one of the control keys 4 and 5 while the lever 3 is in inoperative position, the printing means are shifted to upper case position as described. When it is desired to lock the printing means temporarily in upper case position, the locking key 69 is depressed so that pin 78 turns the transfer lever 55 and shaft 41 whereby the shifting means 39, 38, 36, 32, and 86 are operated.

When the locking key 69 is depressed, and held in depressed position by the locking lever 75, 74, depression of one of the control keys 4 and 5 effects turning of the transfer levers 55, 56 through shaft 41 so that the projection 59 releases the locking lever 75 and the locking key 69 returns to initial position together with the shifting means. When the key levers are then operated, lower case letters are typed.

From the preceding description of a preferred embodiment of the present invention it will become apparent that shifting of the manually operated means 3 from the inoperative position shown in FIG. 2 to the operative position shown in FIG. 3 will result in turning of the control means 61, 52, and 66 between an inoperative position and two control positions corresponding respectively to the inoperative and locking positions of the locking means 46. First linkage means including the linking shaft 41, the linking lever 39, and the linking bar 38 connect the transfer lever means 55 and 56 and thereby the control keys 4 and 5 with the shifting means 32 and 86. Second linkage means including the bar 29 and the pin and slot connection 31, 20 connect the manually operated means 3 with the shifting means 32, 86. The locking means 82 84 are also operated by the manually operated means 3. The marking device or perforator 2 is connected to the manually operated means by the linkage means 8, it), and 40'. The pin and slot connections 30, 31 and 36, 3G constitute a lost-motion device permitting operation of the shifting means 32, 86 by the control key means 4 and 5 or by the manually operated means 3 during use of the mechanism as combined typewriter and marking device and as standard typewriter, respectively.

it will be understood that each of the elements described above, or two or more together, may also find a useful application in other types of keyboard operated marking devices differing from the types described above.

While the invention has been illustrated and described as embodied in a combined typewriter and perforator mechanism adapted to operate selectively as a standard typewriter and as a perforator and printing mechanism for representing a limited number of graphic characters, it is not intended to be limited to the details shown, since various modifications and structural changes may be made without departing in any way from the spirit of the present invention.

Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can by applying current knowledge readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention and, therefore, such adaptations should and are intended to be comprehended within the meaning and range of equivalence of the following claims.

What is claimed as new and desired to 'be secured by Letters Patent is:

1. In a combined typewriter and marking mechanism, in combination, printing means for printing graphic characters and including a first set of printing members for printing numerals and symbols and a second set of printing members for printing letters; a marking device for coding said graphic characters; a keyboard including a first set of key members associated with said first set of printing members, and a second set of key members associated with said second set of printing members, said keyboard being connected to said marking device and to said printing members for controlling marking and printing operations, respectively; locking means movable between an inoperative position, a first locking position for locking said first set of key members, and a second locking position for locking said second set of key members; control key means; control means connected to said locking means and moving with the same between an inoperative position, a first control position and a second control position, said control means including a turnable control shaft connected to said locking means for moving the same between said inoperative and locking positions, spring loaded means connected to said control shaft and urging the same to turn in one direction for moving said locking means from said inoperative position to said first and second locking positions, a holding arm fixed to said shaft, and means connected to said control shaft for turning movement and being operatively connected to said control key means in said first and second control positions of said control means so that said locking means are shifted between said first and second locking positions by operation of said control key means; and manually operated means movable between an inoperative position and an operative position and being connected to said marking device and to said control means for simultaneously rendering said marking device operative and for moving said control means from said inoperative position to one of said control positions so that by actuation of said control key means said first and second sets of key members and associated printing members can be selectively locked during operation of said marking device, said manually operated means in said inoperative position engaging said holding arm in said inoperative position of said control means and blocking turning movement of said control shaft under the action of said spring-loaded means, said manually operated means releasing in said operative position said holding arm so that said control shaft turns for moving said locking means from said inoperative position to one of said locking positions.

2. In a combined typewriter and marking mechanism, in combination, printing means for printing graphic characters and being shiftable between a lower case position and an upper case position for printing different groups of graphic characters, said printing means including a first set of printing members for printing upper case and lower case numerals and symbols and a second set of printing members for printing upper case and lower case letters; a marking device for coding the group of graphic characters associated with one of said positions of said printing means; a keyboard connected to said printing means and to said marking device for controlling marking and printing operations respectively, sa-id keyboard including a first set of key members associated with said first set of printing members and a second set of key members associated with said second set of printing members; first locking means for locking said printing means in one of said positions thereof; second locking means movable between an inoperative position, a first locking position for locking said first set of key members, and a second locking position for locking said second set of key members; control key means; control means connected to said second locking means and moving with the same between an inoperative position, a first control position and a second control position, said control means including a turnable control shaft connected to said second locking means, spring loaded means connected to said control shaft and urging the same to turn in one direction for moving said second locking means from said inoperative position to said first and second locking positions, a holding arm fixed to said shaft, and means connected to said control shaft for returning movement and being operatively connected to said control key means in said first and second control positions of said control means so that said second locking means are shifted between said first and second locking positions by operation of said control key means; and manually operated means connected to said first locking means, said control means and said marking device and being movable from an inoperative position to an operative position for simultaneously rendering said marking device operative, for actuating said first locking means, and for moving said control means from said inoperative position to one of said control positions so that by actuation of said control key means said first and second sets of key members and associated printing members can be selectively locked during operation of said marking device, said manually operated means in said inoperative position engaging said holding arm in said inoperative position of said control means and blocking turning movement of said control shaft under the action of said springloaded means, said manually operated means releasing in said operative position said holding arm so that said control shaft turns for moving said locking means from said inoperative position to one of said locking positions.

3. A combined typewriter and marking mechanism, as

set forth in claim 2, comprising shifting means for shifting said printing means between said upper case position and said lower case position; said manually operated means being connected to said shifting means for simultaneously rendering said marking device operative and actuating said shifting means.

4. A combined typewriter and marking mechanism as i set forth in claim 3, comprising first linkage means connecting said control key means with said shifting means and including a first slot and pin connection; and second linkage means connecting said manually operated means with said shifting means and including a second slot and pin connection, said slot and pin connections preventing operation of said shifting means by said control key means while said manually operated means is in said operative position.

5. In a combined typewriter and perforator mechanism, in combination, printing means for printing graphic characters and being shiftable between a lower case position and an upper case position for printing different groups of graphic characters, said printing means including a first set of printing members for printing upper case and lower case numerals and symbols and a second set of printing members for printing upper case and lower case letters; shifting means for shifting said printing means between said upper case position and said lower case posi tion; a perforator for coding a group of graphic characters associated with one of said positions of said printing means; a keyboard connected to said printing means and to said perforator for controlling marking and printing operations respectively, said keyboard including a first set of key members associated with said first set of printing members and a second set of key members associated with said second set of printing members; a common casing for housing said printing means, said perforator and said keyboard; locking bar means movable between an inoperative position, a first locking position for locking said first set of key members and a second locking position for locking said second set of key members; a shifting shaft; a pair of transfer levers fixedly connected to said shifting shaft for turning movement therewith; linkage means connecting said shifting shaft with said shifting means; a pair of control key means including levers turnably mounted on said shifting shaft and cooperating with said transfer levers, respectively; a control shaft connected to said locking means for turning movement between said positions; a spring-loaded locking lever fixed on said control shaft and tending to turn said locking means from said inoperative position to said locking positions, said locking lever abutting against one of said transfer levers when said locking means is in said first locking position and being released by said one transfer lever when the associated control key means is actuated and turns said one transfer lever, said locking lever locking said one transfer lever when said locking bar means is in the second locking position; a control member connected to said control shaft for turning movement therewith and cooperating with the other transfer lever so that upon actuation of the other control key means said locking means is returned from said second locking position to said first locking position; a holding arm connected to said control shaft for turning movement therewith; a manually operated means movable between an inoperative position and an operative position and engaging in said inoperative position said holding arm to hold said control shaft in a position in which said locking means is in inoperative position, said manually operated means releasing said holding arm in said operative position, so that said control shaft turns into said first locking position, said manually operated means being connected to said perforator for rendering the same operative only when said manually operated means is in said operative position whereby said control key means operate said shifting means in inoperative position of said manually operated means, and selectively lock and unlock said first and second sets of key members and printing members in operative position of said manually operated means.

6. A mechanism as set forth in claim and including linkage means connecting said manually operated means to said shifting means, and other locking means for locking said printing means in one of said positions of said printing means and controlled by said manually operated means so that said shifting means are actuated and said other locking means lock said printing means when said manually operated means is in said operative position and lost-motion means connecting said shifting means with said linkage means so that said shifting means can be independently actuated either by said control key means or by said manually operated member.

7. A mechanism as set forth in claim 5 and including a back spacing key means cooperating with said control member for turning said control shaft to a position in which said locking means is in said inoperative position.

8. A mechanism as set forth in claim 5 wherein said locking means in said first locking position locks said first set of key members so that upon shifting of said manually operated means to said operative position the key levers associated with said second set of printing members can be operated for printing letters.

9. A mechanism as set forth in claim 5 and including locking key means operatively connected to one of said transfer levers for turning said shifting shaft and operat ing said shifting means; a locking lever means for locking said locking key means in actuated position, and being controlled by the control key means associated with said one of said transfer levers to release said locking key means upon actuation of the respective control key means; and

a locking projection connected to said manually operated means and moving to a locking position preventing actuation of said locking key means when said manually operated means is moved to said operative position.

10. A mechanism as set forth in claim 5 and including a turnable blocking member having a row of rollers, said blocking member being turnable between an inoperative position and an operative position, said rollers of said blocking member being located underneath said levers of said control key means and underneath said key members of said keyboard and permitting depression of only a single key member or control key means when said blocking member is in said operative position, said blocking member being connected to said manually operated means and being shifted to said operative position when said manually operated means is shifted to said operative position.

References Cited in the file of this patent UNITED STATES PATENTS 1,780,610 Weinlich Nov. 4, 1930 1,800,596 Bryce Apr. 14, 1931 2,064,340 Davis Dec. 15, 1936 2,320,637 Modigliani June 1, 1943 2,377,801 Mills et al June 5, 1945 2,390,486 Doty Dec. 4, 1945 2,431,714 Sundstrand Dec. 2, 1947 2,980,228 Wlodarczak Apr. 18, 1961 FOREIGN PATENTS 1,131,702 France Oct. 22, 1956

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