US3075201A

US3075201A - Headband assembly for welder's helmet

Info

Publication number: US3075201A
Application number: US74936A
Authority: US
Inventors: Frank W Lindblom
Original assignee: Welsh Manufacturing Co
Current assignee: Welsh Manufacturing Co
Priority date: 1960-12-09
Filing date: 1960-12-09
Publication date: 1963-01-29
Anticipated expiration: 1980-01-29

Description

Jan. 29, 1963 Filed Dec. 9, 1960 F. W. LINDBLOM HEADBAND ASSEMBLY FOR WELDERS HELMET 2 Sheets-Sheet 1 INVENTOR. FRANK W. Ll NDBLOM [i 24w i-fi dw ATTORNEYS Jan. 29, 1963 F. w. LINDBLOM HEADBAND ASSEMBLY FOR WELDERS HELMET 2 Sheets-Sheet 2 Filed Dec. 9, 1960 JNVENTOR. FRANK W. LINDBLOM BY 6 ZIQZNEYS ilnited States Fate:

3,075,201 HEADBAND ASSERlBLY FOR WELDERS HELMET Frank W. Lindhlom, Warwick, RJL, assignor to Welsh Manufacturing Company, a corporation of Rhode Island Filed Dec. 9, 1966 Ser. No. 74,936

Claims. (Cl. 2-8) This invention ticularly to the to the shield.

A welders helmet usually consists essentially of a band to extend about the head and over the top of the head and a shield which is so mounted on this band that it may be raised from a position in front of the face to relates to a welders helmet more parheadband assembly and its connection contact with the head than metal parts and are also of a lighter weight when worn.

'In the accompanying drawings:

FIG. 1 is a perspective view showing the headband assembly and the shield of a weldcrs helmet indicated in dot-dash lines as it would be associated with the headband;

FIG. 2 is a sectional view through one side of the headband showing its shield;

FIG. 3 is a side elevation of a fragmental portion of the headband with the shield removed and showing the part which connects to the shield in full lines when in its lower position but in dotted lines in the position which it assumes when the shield is raised;

FIG. 4 is an exploded view of parts of the pivotal mounting between the headband and the shield showing the relation of the parts;

FIG. 5 is a perspective view of the two overlapping end portions of the encircling part of the headband;

FIG. 6 is a top plan view of the headband with the shield omitted illustrating the adjustment for the encircling size of the head;

FI showing the gear of the headband;

FIG. 8 is a section on line 8-8 of FIG. 7; and

FIG. 9 is a perspective exploded view of the parts of the headband adjusting means.

In proceeding with this invention, I have provided a headband consisting of a head encircling portion and a the connection at connection to the and rack arrangement for expansion G. 7 is a sectional view through the arcuate sleeve.

Patented Jan. 29, 1963 circling size of the headband.

With reference to the drawings 10 designates generally the headband assembly as shown in FIG. 1 which conthe part 12 encircling slides there through so as to'provide a guide. The rear portion of the encircling band is designated generally 17 and comprises two

parts

18 and 19 which are adjustably held in a sleeve 20 which will be more fully explained. The rear portion 17 is pivoted to the front portion 11 as will be further referred to. The end portions of the two

parts

18 and 19 are provided with a series of openings pin connection 21 and The boss 22. 24 has an integral square projection 26 (see 4) extending outwardly therefrom and also engage the rear portion of the to provide some friction upon to be pivotal about this boss.

encircling band 19 so as it although permitting it a radially outwardly projecting be seen inFIG. 4. There is a bracket bearing opening 34 which is rotatably received upon the trunnion 27 and this bracket is provided with a finger '35 which in its swinging movement will engage the abutment 32 and thus limit the movement of the bracket about its pivotal mounting on the trunnion 27. This bracket is also provided with a plurality of openings 36 to receive in any one ofthese openings a pin 37 which projects inwardly from of the shield 23. See FIG. 4.

A mounting 'loop designated generally 40 consists of a closed plastic The washer 29 carries stop 32 as may 33 which has a band-like member'having a bearing opening 41 in the middle part of the inner portion 42 thereof which bearing'opening 41 is rotatably mounted on the trunnion 27 so as to rotate freely thereabout, and in order to secure this inner portion in position a nut 43 is provided to engage one surface of this portion 42, the nut being prevented from rotation by having flats thereon to engage the flattened surfaces 28 of the trunnion 27. This nut is threaded so as to receive the screw 44 having head 45 fitting into the recess of the boss 24 so that it will be removed from the inner surface of the band which engages and embraces the head. This loop 4i) has an outer portion 46 fromwhich there projects outwardly a squared boss 47 which is located eccentric to the pivotal mounting of the portion 42 of this loop and as shown in FIG. 2 this boss '47 is above the center line of the screw and pivotal mounting of the portion 42. The shield 23 is provided with an opening 48 also of square shape and of a size to closely fit the squared boss 47 and is shown in FIG. 2 as being received on this boss when this boss is in its upper position such as shown in FIG. 1. However, if it is desired that the shield be mounted in a lower position, the loop 40 may be rotated through 180 about its pivot on trunnion 27 so that the squared boss 47 will then be below the pivotal axis and will be as shown in do't-dash'lines for the loop 4% and the boss 47 in FIG. 2. It will also be apparent that if this loop is rotated through 90, then the boss 47 will be on the horizontal center line of thepivot so as to provide an intermediate mounting as to relative height of the shield and headband. A cotter pin 49 passing through an opening in the boss 47 secures the shield in assembled position. The loop 46 is made of plastic material and is resilient or compressible so that its

opposite portions

42 and 46 may be resiliently moved toward each other. This provides a shock absorbing medium for the shield when so mounted so that should a blow be received on the shield, it will be transmitted to the head only through this resilient mounting which will absorb some of the shock.

The shield zontal plane and is of a 23 is of a generally arcuate shape in a horihard plastic material and though it is relatively rigid, there is an opportunity for some expansion of the wings 23 of this shield so thatthey may spread away from each other and will then return backto normal position under-the inherent tendency of this shield to again contract. Advantage is taken of this fact inthe connectionbetw'een theshield and the headband assembly. 'Thus, the shield may have its wings 23' sprung apart so that its openings 48 may snap into position over the squared boss 47 and at the same time the shield may be adjusted as to its relative position on the bracket 33 by having its pins 37 snap into the selected openings 36 in this bracket. Thus the bracket and resilient loop 40 are so mounted that the-shield may be lifted from the position shown in FIG. 1 to a position above the head by merely engaging the lower portion of the shield and swing it upwardly. This causes the bracket 33 and the resilient mounting loop 45 to swing upwardly from the position shown in full lines in FIG. 3 to'the position shown in dotted lines. It is usual for the welder, when he desires to lower the shield-to merely shake his head forward coming to a sudden stop so that the momentum of the shield will cause the shield to the inner surface V hers, said mounting means swing downwardly from the raised position into a vertical position before the face, and in order that the shield will stop at the desired position in front of the face and in a vertical position, the abutment 32 on the washer 29 is so arranged on the headband that when the arm 35 of the bracket 33 engages this abutment, the shield will be in the correct position which position is shown in full lines in FIG. 3. Thus it will be apparent that the bracket moves from the dotted line position in FlG. 3 to the full line position in FIG. 3 and there comes to rest by engagement between the stops.

T he encircling size of the headband which essentially consists of an adjustment between the

parts

18 and 19 of the rear portion is shown in greater detail in FIGS. 6 to 9. Here we see an arcuate sleeve 20 which, as shown in PEG. 8, has an outer wall 59 and an inner wall 51. These walls have registering openings comprising a bearinlg opening 52 in wall 56 and an access opening 53 in wall 51. The sleeve is open-ended and receives the parts it; and 13 therein. The part 18 is slotted as at 54 and has a plurality of teeth 55 extending downwardly from the upper side of the slot while the part 19 is slotted as at 56 and has a plurality of teeth 57 extending upwardly from the lower edge of the slot. These two strips are in slidable relation and are guided in end to end sliding arrangement by the upper edge walls of the sleeve 20. The openings 52 and 53 are of such a size that the

teeth

55 and 57 project into the openings. A gear 58 extends through'and has a bearing in opening 52 and engages the

teeth

55 and 57 of these racks as may be seen in FIG. 7. This gear Sfi'is a part of a larger unit designated generally 59 (FIG. 9) which includes a handle 60 on the inner surface of which there are a plurality of radial ribs 61. On the outer surface of this sleeve 29 there is mounted a metal washer 62 which has arms 63 extending into recesses in the outer surface of the sleeve 20 so as to hold it against rotation while it has bosses 64 to engage between the ribs 61 and thus hold the unit 59 in the position to which it has been rotated. A washer 65 within the sleeve and registering with the access opening 53 although larger than this opening and of a size substantially the width of the sleevev serves as a centralizing mount fora screw 66 having head 67 in and accessible through the opening 53 and which engages threads of the bore 67' so as to hold the unit 59 in position in the sleeve but with its gear in engagement with the racks of the

parts

18 and 19 so as to provide a size encircling adjustment for the headband assembly. It will thus be apparent that turning the handle 60 in one direction will expand the encircling headband size while turning the unit or handle 6% in the opposite direction will contract the encircling size. A more contracted size is shown in dotted lines in the plan view shown in FIG. 6. The above provides for a much simpler assembly than heretofore.

1 claim:

1. In a welder-s helmet, a headband member, a shield member and a mounting means independent of said membeing pivotally secured to one of said members to swing about a pivotal axis and secured to the other member to move therewith as relative movement between the two members is had, said means being resilient in the direction of the pivot axis and said mounting means beinga closed loop having its opposite sides resiliently movable toward each other.

2. in a welders helmet as in claim 1 wherein said mounting means is pivoted on said headband centrally of said loop on one side thereof and is attached to said shield member by means adapting the loop to be reversed With respect to the. shield to change the relative position of die shield with respect to its pivot.

head supporting assembly comprisinga head encircling band having two overlapping parts with elongated registering slots, a sleeve generally rectangular in cross section embracing said slotted parts and having a bearing opening in the outer wall and an access opening in the inner'wall registering with the bearing opening, rack teeth on the edge of one slot teeth are of a size to bear in the bearing opening of the looking toward rack teeth on the epposite edge of the sleeve.

in said bearing opening and having a threaded bore come e ces Cited in the file Of this patent prising a gear meshing with said opposite rack teeth and 5 UNITED STATES PATENTS a handle to turn the gear for ad usting the enclrcling size of the band, a washer within the sleeve of a size 1'777454 Shlrmer 1930 larger than the width of the slots and a screw in said 2,135,397 Jackson 1938 bore having a head engaging said washer and said head 2349'218 Welsh May 1944 being accessible thru said access opening. 10 21390306 Severy 271 1945 a welders helmet as in claim 3 where n the 2'511234 Anderson 111113131 1950 Washer is of a size to engage the opposite edge wall of 21658200 Bowers 1953 the sleeve and serves to centralize the unit, 2,747,191 Hofimas'ter May 1956

Claims

1. IN A WELDER''S HELMET, A HEADBAND MEMBER, A SHIELD MEMBER AND A MOUNTING MEANS INDEPENDENT OF SAID MEMBERS, SAID MOUNTING MEANS BEING PIVOTALLY SECURED TO ONE OF SAID MEMBERS TO SWING ABOUT A PIVOTAL AXIS AND SECURED TO THE OTHER MEMBER TO MOVE THEREWITH AS RELATIVE MOVEMENT BETWEEN THE TWO MEMBERS IS HAD, SAID MEANS BEING RESILIENT IN THE DIRECTION OF THE PIVOT AXIS AND SAID MOUNTING MEANS BEING A CLOSED LOOP HAVING ITS OPPOSITE SIDES RESILIENTLY MOVABLE TOWARD EACH OTHER.