US1959888A - Stapling pliers - Google Patents

Description

May 22,1934. f. A. WILKINS 1,988,888

STAPLING. PLIERS Filed Aug. 2f?, 1 952 Patentes May 22, 1934Y 'een STATES PATENT OFFICE 'f STPLING PLIERS Fletcher A. Wilkins, Indianapolis, Ind.

Application August 27, v1932, Serial No. 630,630 v c claims; (ci. 1-49) This invention relates to the art'of stapling machines and particularly to a type operated in the manner of -a pair`of pliers. A primary object of the invention is to provide avery simple and positive acting mechanism wherein a staple is sheared off from the end of a strip and forced through the papers to be stapled and clinched by merely bringing the handles of the machine 4together with the grip of the single hand of the Fig. 1 is a side elevation of a structure embodying my invention;

Fig.' 2, a fragmentary top plan view; Fig. 3,- acentral vertical longitudinal section K through the structure on the line 3-3 in Fig. 2;

Fig. 4, a fragmentary front end elevation; Fig. 5, a transverse vertical section on the line "5--5 in Fig.. 2;

Fig. 6.a transverse-vertical section on the line 6-6inFig.2;

Fig. 7, a horizontal transverse section on the line77 in Fig.' 1, and, y

Fig. 8, a detail in rear end elevation staple securing means.

. Like characters of reference indicate like parts throughout the several views in the drawing.A I form a relatively 4stationary member having a' forward hollow body 10 vsubstantially rectangullar in vcross section and having an internal bore ,such that a strip of'staples 11 may be slidably inserted therewithin. 'I'he strip 11 is of the usual and well kno'wn form wherein a plurality of individual staples'are formed to be U-shaped and either stuck pne 'against tlieother by solder or in the form of a continuous metal strip, in either case the staples so being temporarily attached together to form the strip vwhereby the staples may be separatedone by`one from the strip by shearingoi the-attaching metal therebetween. The rear end of the stationary body is enlarged and` formed to make a handle 12 open from the under side. l

A guide 13 is formed across the front end of the body 10 to leave a 4verticalipassageway therethrough across the body end. A head 14 is slidably carried by the guide`- 13 so as to be free to reciprocate vertically through the slide across the open end of the body 10. This head 14 is substantially rectangular in shape and has its sideI Vedges folded around toward the top to come around behind the head in spaced relation there- 'from to form guides under which a driver 15 may slide vertically against the back face of the head. The edges 16 and 17 respectively, Fig. 6, which are folded around from the side edges of the head terminate to form upturned hooks 18 and 65 19 respectively at substantially midway down the l -back side of the head.` The opening in-the guide 13 betweenthe forward end of the body 10 and the inner face of the guide is sufficient to receive both the head 14 and the driver 15 slidably there- 70 through with a relatively close it so that thetwo members will be maintained vertically. 'I'he lowerpend of the head 14 has stop members 20 and 21 turned around from the side. edges across the back of the head in spaced relation therefrom to permit clearance between these members and' the head sufficient to allow'the driver 15 to slid- .ably pass downwardly along the head -in front of the members 20 and 21. The stop members 20,

21 project rearwardly suiciently 'to strike the so under side of the body 10` so that the head 14 is limited thereby in its upward travel.

A post 22 is riveted to the hammer 15 near-'its upper end and extends rearwardly between the guides 16 and 17 to carry a ball 23 on its rear end. g5

- 'Ihe head 14 is slotted to provide clearance for of the the head of the forward end of the post.

A lower jaw 24 is formed to be channel-shaped and is carried in parallel' relation to and below the body l0 by means of `van' integral attaching bracket 25 which has transverse bars 26 and 27 coming in contact with the under side of the body 10 and legs 28, andv 29 coming around over the top side of the body 10 and tied together by means of rivets 30 through upturned ears. The bracket 25 grips the body 10 so -as to be held stationary. Ears 31 and 32 extend vertically' upward from the respective sides of Vthe bracket 25 to carry a pivot bolt 33 which extends transversely therebetween and therethrough to rockably support the shiftable jaw 34. This jaw 34 is made to haa/e two parallel side plates which pass respectively alongthe sides of the bracket 25 and through which the bolt 33 passes. A bar 35 extends across to the under sides of the two plates of the jaw 34.towa'rd its front end while inturned legs 36 and 37 from the top edges of the two plates form a top bar; Ihis top bar andthe under bar 35 are -spaced apart and so located as to receive the ball -23 roekably therebetween, Fig. 3. A leaf spring 38 is secured to the plate 35 and carried around forwardly to compressively engage against the hooks 18 and 19 from their top sides so as to tend to move the head 14 downwardly in relation to the hammer 15 which is normally held in the upper position by reason of the ball 23 engaging between the plates on the jaw 34. The jaw 34 is normally held upwardly by means of a compression springv39 which has its upper end secured to a transverse bar 40 extending across the top sides of the two plates forming the jaw 34 and has its lower end positioned over the forward upturned ears extending from the legs 28 and 29 of the bracket 25. The side plates of the jaw 34 extend downwardly and are united by an under web to form the lower handle 41 as a means of shifting the jaw 34 about its pivot o'n the bolt 33.

Within the channel of the jaw 24 is carried an anvil 42 which has ears 43 and 44 extending laterally from its respective sides to drop vwithin notches 45 cut in the sides of the jaw 24. A compression spring 46 forces the anvil 42 compressively against the jaw 24 so as to retain it in position. The rear end of the anvil 42 slides closely under the lower edge of the transverse bar 27. On the top side of the anvil 42 are two sets of depressions 47 and 48. The depressions 47 are here shown as being directly under the lower opening in the head 14 with the ears 43 land 44 within the rear slots 45. By lifting the ears 43 and 44 upwardly against the push of the spring 46, the anvil 42 may be pulled forwardly to have the ears drop down to within the forward notches 45 so as to bring the other depression 48 to under the head 14.

In order to feed the strip of staples 11 forwardly, I provide a carriage 49 strung on a rod 50 which has a long spring 5l coiled therearound between the carriage 49 and a rear stop 52 so that the carriage 49 is normally urged by the spring 5l to the extreme front end of the rod 50, the rod having a length approximately that of the combined lengths of the body 10 and the handle 12. 'I'he stop 52 has a finger grip 63 extending out between the handle 12 and has lateral arms 53 and 54 adapted to be inserted within longitudinal f slots 55 and 56 entering from the rear end of the handle 12 and then urged downwardly to within notches formed at the forward ends of these slots in the manner of a bayonet type connection. Thus by first inserting a strip 11 of staples to within the body 10 from under the handle l2 and then inserting the end of the rod A50 to within the staples in the body 10 and pushing the rod 50 therein to have the carriage 49 abut the rearend of the strip, the spring 51 may be compressed so as to permit the arms 53 and 54 to be engaged within the notches in the rear end of the handle 12 as above explained whereby the spring 51 thus maintains a pressure urging the strip 11 forwardly to have the front staple thereof c-ompressively bear against the back face of the head 14. By reason of the spring 39, the handle 41 is rocked downwardly and the jaw 34 upwardly so as to carry the driver 15 to its extreme upper position as limited by the post 22 bearing against the upper end of the head 14, the head 14 being limited in its upward travel by the stops 20 and 21. j

The anvil 42 is shifted forwardly or backwardly to bring it to the desired position whereby the staple will be either temporarily setas in the case of the use of the notches 47 or permanently set by the use of the longer groove 48. The papers (not against the anvil 42.

shown) are inserted to between the lower end of the head 14 and above the anvil 42 and the handles 12 and 41 are drawn together so as to cause the jaw 34 to lower the driver 15 thereby permitting the spring 38 to carry the head 14 downwardly and against the paper to press the paper Continued drawing of the two handles together will cause the driver 15 to be carried on down after the head 14 has come to rest. As both the driver 15 and head 14 are initially lowered, the lower end of the driver 15 bears against the top of the foremost staple of the strip 11 and carries it on down along the back of the head 14 to within the space between the stops 20 and 21 and the back face ofthe head so that after the head 14 has come to rest against the paper on the anvil, the driver 15 will then move on down to force the staple thereunder on through the paper and cause the ends to be turned under the paper as may be directed by the grooves in the anvil pressed thereunder. It is thus to be seen that the paper is initially gripped and held in place by the head 14 following which the hammer 15 continues on downwardly to set the staple. Release -of the handles allows the spring 39 to return the parts to their normal postions. A cover 64 is mounted over the body 10 to enclose the mechanism thereabove.

While I have herein shown and described my invention in the form as now best known to me, it is obvious that structural changes may be made without departing from the spirit of the invention and I therefore do not desire to be limited to that precise form beyond the limitations as may be imposed by the following claims.

I claim: 1. In a stapling machine, a pair of handles, a hollow body continuing from one of the handles shapedto receive staples in the strip form, a guide across the end of the body, a head slidably carried by the guide, a driver slidably guided by the head, a jaw extending from the other of said handles pivotally interconnected with said driver, means interconnecting said head and said jaw whereby lowering of the driver will simultaneously tend to lower the head, and an anvil xed below and in relation to said body, said means comprising a spring attached to the jaw and pressing the head toward the anvil.

2. In a stapling machine, a pair of handles, a hollow body continuing from one of the handles shaped to receive staples in strip form, a guide across the end of the body, a head slidablycarried by the guide, a driver slidably guided by the head, a jaw extending from the other of said handles pivotally interconnected with said driver, means interconnecting said head and said jaw whereby lowering of the driver will simultaneously tend to lower the head, and an anvil fixed below and in relation to said body, said means comprising a spring attached to the jaw and pressing the'head toward the anvil, said driver being shorter than said head whereby rocking of said other handle toward said one handle will advance the head toward the anvil ahead of the driver.

3. In a stapling machine, a pair of handles, a hollow'body continuing from one of the handles`shaped to receive staples in strip form, a

guide across the end of the body, a head slidably carried by the guide, a driver slidably guided by the head, a jaw extending from the other of said handles pivotally interconnected with4 said driver, means interconnecting said head and said remesa y jaw whereby lowering of the driver will simultaneously tend to lower the head, and an anvil fixed below and in relation to said body, said driver being shorter than said head, said means comprising a spring connecting the last mentioned handle and the head to form a yielding connection to permit said driver to be carried on down toward said anvil after travel of said head is arrested by the anvil.

4. In a stapling machine, a pair of handles, a hollow body continuing from one of the handles shaped to receive staples in strip form, a guide across the end of the body, a head slidably carried by the guide, a driver slidably guided by the head, a jaw extending from the other of said handles pivotally interconnected with said 'driver, means interconnecting said head and said jaw whereby lowering of the driver will simultaneously tend to lower the head, and an anvil xed below and in relation to said body, Said driver being shorter than said head, vsaid means comprising a spring connecting the last mentioned handle and the head to form a yielding connection to permit said driver to be carried on down toward said anvil after travel of said head is arrested by the anvil, said head having a stop at its upper end, and said connection between said driver and said jaw comprising a post extending from the driver, said post being urged against said stop by said spring.

5. In a stapling machine, a staple holding body, a handle extended from the body, said body being open at its front end, means normally urging staples to slide through the body to extrude from the front end, a head slidably guided across the front end of the body spaced therefrom the width of one of said staples, a driverslidably guided between the head and the body end, a second handle pivotally supported from the body, a jaw extending from the second handle, means interconnecting the jaw and said driver, and spring means interconnecting said jaw and said head, and an anvil jaw carried by the body in fixed relation thereto.

6. In astapling machine, a staple holding body, a handle extended from the body, said body being open at its front end, means normally urging staples to slide through the body to extrude from thefront end, a head slidably guided across the front end of the body spaced therefrom the width of one of said staples, a driver slidably guided between the head and the body end, a second handle pivotally supported from the body, a jaw extending from the second handle, means interconnecting the jaw and said driver, and spring means interconnecting said jaw and said head, and an anvil jaw carried by the body in fixed relation thereto, an anvil block carried by the anvil jaw, an ear extending from the side of the block adapted to t selectively within notches formed in the jaw, and a spring yieldingly resisting lifting of the block from the Jaw.

FLETCHER A. WILKINS.

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