US634144A - Machinery for printing in several colors. - Google Patents

Description

Patented Oct; 3, I899. E. LAMBERT.

MACHINERY FOB PRINTING IN SEVERAL COLORS.

(Application filed Dec. 29, 1897.)

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(No Model.)

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N0. 634,I44. Patented U01. 3, I899. E. LAMBERT. MACHINERY FOB PRINTING IN SEVERAL COLDRS.

(Application filed Dec. 29, 1897.)

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No. 634,|44. I, Patented Oct. 3, I899. E. LAMBERT. MACHINERY FOR PRINTING IN SEVERAL COLORS.

(Application filed Dec. 29, 1897.)

3 Sheets-Sheet 3,

(No Model.)

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EDOUARD LAMBERT, OF PARIS, FRANCE.

MACHINERY FOR PRINTING IN SEVERAL COLORS.

SPECIFICATION forming part of Letters Patent No. 634,144, dated October 3, 1899.

Application filed December 29, 1897. Serial No. 664,348. (No model.)

To aZZ whom it may concern:

Be it known that I, EDOUARD LAMBERT, a

citizen of the Republic of France, and a resi-' dent of Paris, France, have invented certain new and useful Improvements in Machines fonPrinting in a Plurality of Colors, of which the following is a specification, this invention having been patented in France under date of April 11, 1888, No. 189,887, and December 5, 18 91, No. 217,860; in Englandunder date of September 26, 1888, No. 13,888, and April 7, 1892, No. 6,702; in Germany under date of May 6, 1892, No. 66,260, and in Belgium under date of September 27, 1888, No. 83,392.

My invention relates to an improved construction of machinery for printing in several colors, which is characterized by the combination, with two orlnore machines which are single-platen machines placed side by side, of a system of mechanism which effects the transport of the sheets from one printingform to another, the uniform travel of which is determined by a rod of definite length that moves between two fixed stops.

The principal characteristics of the invention are asfollows:

First, the machines are so placed relatively to each other that the cylinders carrying the paper sheets are in line with each otherthat is to say, have the same axis of rotation and a frame common which carry the cylinders; second, during the return motion of the table of the machines-that is to say, while the cylinder is stationarythe sheet of paper is conveyed parallel to the axis of the cylinder and in the direction of the .=generatrices thereof and is stopped in a determined position, and, third, the guiding and register of the sheets during such motion are insured .(a) As regards the travel of the sheets:

being fixed relatively to the before-mentionedpins and facilitating the transporting movement of the tail end of the sheet.

(1)) As regards the uniform extent of motion of the sheet notwithstanding any variation in the motion of the mechanical devices that effect the movement of the sheet: by means of a rod which carries the pins and the small blades and which is carried along by friction by a combination of mechanical devices called the transporter. The rod,which is of definite length, can move between two fixed stops, and the total travel effected by the transporter is greater than the difference of the distance between the fixed stops and the length of the rod. Itfollows that the rod carried along by the transporter bears against each stop before the end of each travel of the transporter and remains stationary while the transporter is finishing its travel. The rod,and consequently the pins,the blades, and the sheet thus have an absolutely constant travel.

The accompanying drawings show by way of example a machine for printing in four colors inwhich the bed carries four printingforms, one for each color to be printed, the ink tables and rollers being also distinct for each color.

Figure 1 shows a part side view of the machine. Fig. 2 is a cross-section. Fig. 3 is a plan of the cylinder and of the transporter. Fig. 4 shows a section of the cylinder and of the transporter to a larger scale. Fig. 4 is a detail View. Fig. 5 shows a front view of the carrier of the pins.

The travel of the sheets of paper is as follows: A sheet is margined at the end of the cylinder in the ordinary manner of single machines during the stoppage of the cylinder. The maximum width of the sheet is equal to the quarter of the width of the cylinder. The nippers of the cylinder are closed and the sheetis carried around by the rotation of the cylinder, which is made to revolve for printing from the first form.- The cylinder then stops, the nippers being still closed. The pins of the transporter then descend, and the nippers being now opened the sheet begins to travel and carries thesheet along the cylinder while this is stationary until the sheet is brought in front of the second form. During this time a fresh sheet is margined on the margin-table and, being brought on the cylinder in the position where the first one was originally situated, the nippers are closed upon it and the pins of the transporter rise. On the cylinder now rotating both sheets are printed upon by two forms of different color, after which the cylinder stops again. During the rotation of the cylinder the transporter has returned to its original position and seizes the margined sheets by its pins. The sheets then pass-the first one from the second form to the third form and the second sheet from the first form to the second one. A third sheet is then margined and secured on the cylinder. The cylinder then rotates, so as to print upon such sheet with the first form, upon the second sheet with the second form, and upon the first sheet with the third form. On the cylinders again stopping the transporter seizes the sheets and conveys the first one to the fourth form, the second one to the third form, and the third sheet to the second form. A fourth sheet is then marginedand attached to the cylinder, which then rotates and prints all four sheets,respectively, with the fourth, third, second, and first forms. The first sheet having thus traveled along the entire length of the machine and being now printed upon with the four colors is removed, and the three other sheets having been shifted by the transporter and a fresh sheet having been placed upon the cylinder opposite the first form all four sheets are again simultaneouslyprinted upon, and so on continuously, there being after each impression a sheet removed at one end that has been printed upon in four colors, while at the other end a fresh sheet is introd need.

The above-described transporting of the sheets is effected by the following mechanisms: A, Fig. 5, represents a carriage having a to-and-fro motion imparted to it by any suitable mechanism, the extent of such motion being equal to d. B is a bar of determined length c, which slides with friction in the supports E and F, carried by carriage A. O and D are two fixed stops at a distance a from each other. Assuming that d is greater than a c that is, Z)and assuming that the carriage A is at the one end of its travel, that one end of the rod 13 is in contact with the stop D, and that the motion of the carriage is toward C, then at a given moment the bar B, carried along by the supports E and F, will butt against the stop 0, and as dis greater than 1) bar B, being stopped, will slide with friction in the supports E and F to the extent (1 Z). 011 the carriage A traveling in the contrary direction it will carry rod B with it again in the same position which it; had relatively to A at the end of the first travel. It follows that when carriage A travels toward stop D the bar B will butt against the latter before A arrives at the end of its travel, so that B will then again remain stationary while A completes its motion, keeping B pressed against D by reason of the frictional contact of B with its support, the extent of the relative motion between A and B being again equal to (Z b, as before. Thus it will be seen that whatever may be the travel of carriage A the motion of B will always be constant.

Assuming 2 7" to represent the sum of the play movements of all the mechanical devicesactuating A, it will be seen that to insure a constant travel of'B it suflices that (l b be greater than 2 Thus if the bar is made to carry a sheet of paper along with it either by means of pins or by nippers it will always impart to such sheet a perfectly exact extent of motion. In practice the distance d b is made sufficiently greater than 2 for allowing a length of time for the stoppage of B suflicient for the pins thereof to descend on the sheet of paper and for the nippers of the cylinder to open at one end of the earriages travel and for the nippers to close and the pins to rise again at the other end of the travel. The arrangement of mechanism for carrying out this action is as follows: A casting G, Fig. 2, formed with guides, is carried by the uprights Y and Z of the machine. On this casting slides the carriage A, receiving a to-and-fro motion, as follows: At the one end of the machine, Fig. 1, is a wheel 0, receiving rotary motion and having a crank-pin P, that slides in the slotted rod Q, which can oscillate, being secured to the rock-shaft R, so that by the rotation of the crank-pin a to-andfro motion is imparted to Q of the kind known as a rapid'retnrn motion. On the shaft R is fixed a lever L, which is connected to the carriage A by the rod M. Thus it will be seen that by the uniform rotation of the wheel 0 a to-and-fro motion with quick return will be imparted to the carriage A. On the carriage A are fixed the supports E F, that carry the bar B, sliding therein with friction.

The bar B is carried by bearings m m, adjustable in the supports E F, the friction being regulated by screws 11., which act on the upper check m of the bearing. The carriage A consequently carries the bar 13 with it in its to-and-fro motion on the casting G, at the ends of which are the screw-stops C D, situated in line with the bar B.

On the bar B are secured the pieces Z and the rods L, on which are the pins h. The bar B consequently carries the pins h. On the bar B is fixed a finger P. This finger penetrates into the slotted piece q, fixed on the shaft 1*, and with a cam gives a suitable oscillation by means of the levers s s. Fig. 4.- is a section of these different devices. At the moment when the cylinder S stops the pieces Z fall on a bar f carried by the cylinders. The pins h then penetrate into a longitudinal groove g in the barf, and are thus made to pierce the margined sheet between the nippers of the cylinders and the bar f. The nippers of 'the cylinder then rise and leave the course free for the pins h. At this moment the carriage A begins to travel-and carries the bar B and pins h,and consequently also the sheet of paper, with it; but before the end of the travel of A, the bar B butts against 0, so that the motion of the pins and IIO paper sheet is stopped and the nippers are again close down upon the latter by suitable known devices. The pins are then raised by the pieces 19 q r s s and the cam, leaving the sheet in the nippers. The cylinder begins then to rotate for printing the sheet and during this time the carriage A brings the pieces Z and the pins it back to their original position. When the cylinder has terminated its rotation and has stopped, the bar B bears against the stop D. The pins are still motionless in the transverse direction by means of the cam and pieces 3 s r q p, they fall on the bar f and in the groove 2, pierce 'the sheets,

and convey them like during the latter stoppage of the cylinder. The sheet being only held at the head ofthe margin by the pins h, the travel of the sheet upon the cylinder is facilitated by small spring-blades Z, Fig. 45, fixed on the pieces Z. These springs fall with the pins and bear upon the sheet.

Having now particularly described and ascertained the nature of my said invention, what I claim is 1. In combination, the cylinder a bed having a plurality of printing-forms, a carriage reciprocating parallel with the axis of the cylinder with means for operating it, a rod supported from said carriage and capable of longitudinal movement thereon,but normally held against movement by the friction of its supports, arms carried by said bar, pins carried at the extremity of said arms, means for lowering and raising said arms to cause the pins to pierce the paper at the head thereof Where it is held by the cylinder-nippers and before these are opened, and to release the same after the nippers have closed again when the travel of the paper is completed, and auxiliary'transporting devices consisting of spring-arms made to bear upon the surface of the paper and having the same motion as the pins, substantially as described.

2. In combination, the cylinder and cylinder-nippers a bed having a plurality of printing-forms a carriage reciprocating parallel with the axis of the cylinder with means for operating it, a rod supported from said carriage and capable of longitudinal movement thereon, but normally held against movement by the friction of its supports, arms carried by said bar, pins carried at the extremity of said arms, means for lowering and raising said arms to cause the pins to pierce the paper at the head thereof where it is held by the cylinder-nippers and before these are opened and to release the same after the nippers have closed again when the travel of. the paper is completed, auxiliary transporting devices -consisting of spring-arms made to bear upon the surface of the paper and having the same motion as the pins, and stops arranged to limit the movement of the frictionally-sup= ported rod, the length of travel of the said rod being greater than the length between the said stops, so that when the transporting devices are arrested by the stops, having their exact motion so determined, the carriage con= tinues to travel to a certain extent, substan= tially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses.

EDOUARD LAMBERT. Witnesses:

EDWARD P. MACLEAN, J ULES FAYOLLET.

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