US2264322A - Fastener applying implement - Google Patents

Description

Dec. 2, 1941-.

A. H. MAYNARD FASTENER APPLYIQG IMPLEMENT 3 Sheets-Shet l Filed Dec. 12, 1938 Dec. 2, 1941. A. H. MAYNARD 2,264,322

FASTENER APPLYING IMPLEMENT Filed Dec. 12; 1938 5 Sheets-Sheet 2 Dec. 2, 1941. A. H. MAYNARD 2,264,322

FASTENER APPLYING IMPLEMENT Filed Dec. 12', 1938 Sheets-Sheet 5 Patented Dec. 2,1941

UNITED STATES PATENT OFFICE FASTENER. APPLYING IMPLEMENT Arthur H. Maynard, Warwick, R. I., assignor to Boston Wire Stitcher Company, Warwick, R. L, a corporation of Maine Application December 12, 1938, Serial No. 245,105

31 Claims. (01. 1-3) This invention relates to improvements in fastener-applying implements for attaching papers and other sheets, securing tags and labels to articles of commerce and for use generally for fastening and stitching together various objects andarticles. p

One of the objects of the present invention is to provide an implement of the type indicated of light weight and compact construction to adapt it to be carried in the pocket or in a lady's purse or hand-bag for general use.

Another object of the present invention is to provide an implement of the type indicated having a coreless magazine with an open side through which fasteners are supplied and a fastener-applying lever constituting a closure for the open side of the magazine and movable relatively thereto for applying fasteners fed therefrom.

Another object of the invention is to provide an implement of the type indicated having means for latching or looking the parts in compact folded relationship, with the magazine and fastener-applying lever locked together to limit the relative movement therebetween, and with the lever releasable for movement away from the magazine to open the latter.

Another object of the present invention is to provide an implement of the type indicated so constructed and arranged that a single spring is operative to hold the magazine elevated with respect to the base and the fastener-applying armraised with respect to the magazine.

Still another object of the present invention is to provide an implement of the type indicated having feeding means for the fasteners adapted to be automatically latched in retracted position and automatically released when the fastenerapplying lever is moved to close the open side of the magazine.

Another object of the present invention is to provide an implement of the type indicated hav-' by way of example only, as illustrated by the accompanying drawings. In the drawings:

Fig. 1 is a perspective view of a fastener applying implement incorporating certain novel features of the present invention;

Fig. 2 is a perspective view of the implement illustrated with its base swung back through an arc of 180" with respect to the fastener-applying arm to adapt the implement to be used as a tacker; i

Fig. 3 is a perspective view of the implement illustrated with the operating lever swung back through an arc of 180 with respect to the magazine to open the latter for the insertion of the fasteners;

Fig. 4 is a perspective view of the implement illustrated with its parts latched together in compact, folded relationship;

Fig. 5 is a longitudinal sectional view through the-implement showing-the spring for yieldingly holding the operating lever raised with respect to the magazine and the magazine raised with respect to the base and also illustrating the v latching means on the lever and magazine for Still another object of the present invention is to provide an implement of the type indicated which is of extremely simple and compact construction and comprised of a minimum number of parts to adapt it for economical manufacture. Further objects of the invention are set forth in the following specification, which describes a preferred form of construction of the invention,

limiting the relative movement therebetween;

Fig. 6 is a part-sectional view of the implement showing the relationship of the parts at the completion of a fastener-applying operation;

Fig. 7 is a top plan view of the magazine showing the pusher mounted therein and the strut for guiding the pusher and bracing the shear-plate; Fig. 8 is a part-sectional view of the magazine and base of the implement in side elevation showing the pusher latched in retracted position in the magazine and indicating the fastener-applying lever as beingswung toward the magazine;

Fig. 9 is a part-sectional view of the implement showing the latch on the operating lever as being moved forwardly by its sliding engagement with the cam-faceon the base;

Fig. 10 is a view similar to Fig. 9 showing th operatinglever moved to closed position on the magazine and the latch moved forwardly and underlying the latching shoulder on the magato hold the several parts in compact folded relationship;

Fig. 13 is a transverse sectional view taken on line I3-I3 of Fig. showing the relationship of the driver and staples and the hold-down lugs at the rear of the driver;

Fig. 14 is a transverse sectional view taken on line ifiil i of Fig. showing the depending latching lug on the pusher engaged in the open-- ing in the base to hold the pusher in retracted position; and

Fig. is a transverse sectional view taken on line Id-Ifi of Fig. 6 showing the pusher in operative position in the magazine with its depending lug resting on the bottom wall thereof.

In the accompanying drawings the invention is illustrated as applied to a device for driving and clinching U-shaped staples, but it is to be understood that the implement may be used to apply other forms of fasteners. As herein illustrated the implement comprises a rectangular base 2 having a raised boss 3 at its forward end with clincher-grooves l formed therein and upwardly-projecting spaced stanchions 5 adjacent its rearward end having rearwardly-projecting ears 6. The forward edge of one of the stanchions 5 is provided with a rearwardly-inclined cam-face i and below the cam-face the stanchion is recessed to provide a latching shoulder 8. The base 2 projects rearwardly beyond the stanchions E to provide a stop 9 for a purposeas will appear later. Preferably, the base 2 is constructed in one piece blanked from sheet-metal stock with the boss 3 struck up therefrom and the clinchergrooves 4 stamped therein, while the stanchions ii are folded upwardly at the sides of the base. The ears 6 projecting rearwardly from the stanchions 5 are drilled or otherwise pierced to provide alined holes Iii for mounting a-pivot-pin II having an annular recess I2 intermediate its ends.

Th stapling arm I5 comprises a magazine l6 and an operating lever I7 constituted as a cover in which themagazlne is adapted to be nested. The separable parts It and I7 of the arm I5 are both rockably mounted on the pivot-pin II for movement relatively to each other or together as a unit. The magazine I8 is of channel-shape in cross-section having a bottom wall I8 and upwardly-extending side walls l9 adapted to closely fit between the spacedstanchions 5 on the base 2. The side walls I9 of the magazine It are pierced adjacent their rearward ends with alined holes adapted to receive the pivot-pin II.

A shear-plate 2i) projectsupwardly from the bottom wall I8 of the magazine I8 at its forward end and flanges 2! project inwardly from the side walls I9 in spaced relation to the shear-plate to provide a throat or guideway 22 for the staples between the plate and the flanges. As herein illustrated the upper edge 23 of the shear-plate 20 is arched as shown in Fig. 13 of the drawings to accommodate arched crown staples s of the type illustrated and described in United States Letters Patent No. 2,052,553 to Cavanagh, dated September 1, 1936, the arch 28 being beveled rearwardly, see Fig. 5. Preferably, the bottom wall I8 of the magazine It is slitted rearwardly at its forward end adjacent the opposite side walls 69 and the portion between the slits is folded upwardly to form the shear-plate 20, while the projecting ends of the side walls are folded inwardly to form the flanges 2|. As illustrated most clearly in Fig. 7, the slits extend rearwardly from the shear-plate it to provide clearance openings 2d at the rear of the throat 22. Holdpivot-pin I i.

aaoaeas down lugs 25 are provided at the rear of the throat 22, being in the form of tabs folded inwardly from the top of the opposite side walls I9 to overlie the staples at the forward end of the magazine. Intermediate the ends of the magazine It the side walls I9 are slitted and the slitted portions forced outwardly to provide guidsing bosses 26 for the lever l1. Rearwardiy of the bosses 26 a lug or projection is struck outwardly from one of the side walls I9 to provide a latching shoulder 21. Preferably, the upper edges of the side walls 59 of the magazine I8 adjacent the stanchions 6 are recessed or cut away on an are as illustrated at 38, in Fig. 5, for a purpose that will appear later. The bottom wall I8 of the magazine It is provided with a latching shoulder 28 and, as illustrated in the present drawings, the shoulder 28 is formed by I the front edge of an opening 29.

Extending longitudinally of the channel-shaped magazine I6 is a strut which may take the form of a rod having a reduced end 3| adapted to engage in a hole in the shear-plate 20 with its annular shoulder 32 bearing against the rearward face of the plate. The opposite rearward end of the rod 30 projects through a hole 33 in the upright portion of a right-angular bracket 34 and seats in th annular recess I2 in the The horizontal portion 35 of the bracket 34 underlies the pivot-pin I I to hold the end of the rod 30 against upward displacement. Thus, the strut or rod 30 extends between the pivot-pin II and shear-plate 20 tobrace the latter against displacement rearwardly and the rearward end of the rod seats in the annular recess 12 in the pivot-pin I I to retain th latter in place. The rod 30 is assembled in the magazine by sliding the bracket 34 forwardly thereon, inserting the reduced forward end 3| of the rod into the hole in the shear-plate 20 and then seating its rearward end in the annular recess I2 in the pivoiwpin II. A coiled spring II, to be described later, acting between a pusher Ell on the rod and the bracket 34 yieldingly holds th vertical and horizontal portions of the bracket in position against one side and the bottom of the pivotpin I I.

The lever or cover I! is of channel shape arranged in inverted relation to themagazine I 8 andhaving a top wall 42 and depending side walls 43. The lever or cover I! is slightly wider and longer than the magazine I6 so that the top wail 42 projects beyond the forward end of the magazine and its side walls 43 overlie the sides of the magazine and the sides of the stanchions 5 on the base 2. The side walls 43 of the lever I1 are pierced adjacent their rearward ends with alined holes adapted to receive the laterally-projecting ends of the pivot-pin I I.

- A staple-driver 44 is attached to the top wall it of the lever I! to adapt it to reciprocate in the throat 22 of the magazine It as the lever is rocked toward and away from the latter. As

herein illustrated, the driver- 44 is formed by the I by the rivet 48 r other suitable means. The leaf-spring 41 is of a width substantially equal to the distance between the side walls 48 of the lever l1 and extends throughout a substantial portion. of the length of the lever being generally curved in an arc from its point of attachment to its free end as illustrated in Fig. 3.

A latch 50 is mounted to slide on the side wall 43 V of the lever l1 adjacent the side wall l8 of the magazine It having the latching shoulder 21. The latch 50, as illustrated in Figs. 12 and 14,

-is in thei'orm of a sliding plate adapted to bear against the inside face of theside wall 48 and having ears i and 52 forming shoulders projecting from its opposite edges. The latch 50 is held in position on the lever I! by means of a laterally-projecting shank 53 extending outwardly through an opening 54 in the side wall 43 with a finger-piece 55 at its outerend which overlies the outside face of the lever at the ends of the opening 5d. The opening 54 in the side wall 43 of the lever I1 is of greater length than that of the shank 53 so that the latching plate 50 may he slid from the position shown in Fig. 9 to that shown in Fig. 10, or vice versa. Preferably a friction element 51 is provided between the latch 50 and the side wall 48 of the lever II to yieldingly hold the latch in one or the other of its two, positions on the lever. As illustrated in Figs. 6 and 14 the friction element 51 comprises an arched leaf-spring'of rectangular form mounted on the shank 53 of the latch 58 with its central portion beaming against the latch and its ends bearing against the inside face of the side wall 43 of the lever. As illustrated in Fig. 9, the rearward edge 58 of the latch 50 adjacent the ear 52 is inclined upwardly for cooperation with the cam-face I on the stanchion 5 of the base 2 to automatically slide the latch forwardly during the movement of the lever i1 to close the open side of the magazine 18. The

ear 5| at'the forward edge of the latch normally underlies the latching shoulder 21 on the side wall i 9 of the magazine l6 as illustrated in Figs. 5 and 6, but the latch may be slid rearwardly to release it from the shoulder 21 as illustrated in Fig. 9, or to engage the rearward ear 52 with the latching shoulder 8 on the stanchion 5 of the base as illustrated in Fig. 12. In accordance with the present invention a supply of the arched crown staples s may be inserted into the channel-shaped magazine l6 through its open top to be wholly supported therein by the ends of their legsresting upon the bottom wall i8. The crowns of the staples s extend laterally across the interior of the magazine l6 which is so constructed that the opposite legs of the staples lie closely adjacent the inner faces of its spaced walls 19. Thus, the magazine has no core as a support for the staples which simplifies its construction and reduces the number of parts.

The staples s are advanced in the magazine by a pusher slidably mounted therein at the rear of the staples s. The pusher 88 has a top wall 6| with depending front and rear walls 82 and 63 and opposite side walls 64 which project beyond the front and rear walls to provide forward of the stanchions.

closely against the inside faces of the side walls IQ of the magazine It which, together with the rod 80, guide the pusher in its sliding movement. As illustrated in Figs. 6 and 7, the ends of the forwardly-projecting rails 65 are adapted to engage the opposite legs of the rearmost staple in the magazine, the forward upper edges of the rails being beveled as indicated by the reference character 69 in Fig. 11 to adapt the pusher to be cammed rearwardly by the driver 44. Forwardly of the rear wall.63 the side walls 64 of the pusher 60 are cut away at the bottom as illustrated in Fig. 11 to adapt the pusher to rock about the bottom edge of its rear wall as a pivot from the position illustrated in Fig. 6 to that illustrated in' Fig. 8. The lower edge of the front wall 62 which depends below the side walls- 64 and the bottom edges of the forwardly-projecting rails 65 constitutes 2. lug or latch II! adapted to enter the opening 29 in the bottom wall I 8 of the magazine l8 and engage the latching shoulder 28 when the pusher is retracted, as shown in Fig. 8. As illustrated in Fig. 14 the depending lug 10 is of reduced width to facilitate its entrance into the opening 29. When, the pusher is rocked to engage its depending lug Ill with the latching shoulder 28 in the bottom wall l8- of the magazine It the rearwardly-extending rails 66 project upwardly above the arcuatelyrecessed portions 88 of the side walls l9 as illustrated in Fig. 8. The pusher 60 is advanced in the magazine by means of a compression spring H coiled about the rod ill and acting between the angular bracket 34 and the rearward wall 68 of the pusher. One preferred form of construction of the invention having been described in detail its mode of operation is' explained as follows,

To open the magazine IE to adapt it to receive a supply of staples s the latch 50 is manually operated to slide it rearwardly to the position illustrated in Fig. 9 whereby to release its ear 5! from the shoulder 21. The lever I1 is then swung on the pivot-pin il outwardly away from the magazine i6 to the position illustrated in Figs. 3 and '7. The pusher 88 is next retracted by manual pressure applied to slide it rearwardl y. and rock its front wall 62 downwardly when the depending lug Ill overlies the opening 29 in the bottom wall i8 of the magazine It. The pusher 60 will thus rock about the bottom edge of its rear wall 68 to cause the lug 10 to enter the open 'ing 28 and engagethe shoulder 28 to hold the pusher retracted against the action of the spring I I. A supply of U-shaped sta'ples s having arched crowns as illustrated in Figs. 3 and '13, and preferably in the form of a self-contained stick, is inserted in the magazine l8 between its spaced side walls IS with the ends of their legs resting against the bottom wall l8. The staples s are thus wholly supported on the bottom wall l8 of the magazine l8.

After the magazine I6 has been loaded with a supply of staples s the lever I1 is swung back toward the magazine It in the manner indicated by dash lines in Fig. 8. 'During this movement r of the lover I! the free end of the spring 41 en: gages with and slides along the upper edgesof the spaced stanchions 5 as shown in Fig. 9 and the inclined edge 56 of the latch 50 engages the inclined cam-face I on the forward end of one Upon further continued movement of the lever H from the position shown in Fig. 9-to that shown in Fig. 10 the spring 41 is tensioned and the latch 50 is moved forwardly by the cam-face 1 until its forwardlyprojecting ear underlies the latching shoulder 2'! on the side IQ of the magazine l6. During this swinging movement of the lever H with respect to the magazine IS the driver 44 enters the throat 22. When manual pressure on the lever I1 is released the tensioned spring All acting against the stanchions 5 causes the lever to move upwardly away from the magazine l6 and base 2 until the forwardly-projecting ear 5! on the latch 50 engages the latching shoulder 21 on the side of the magazine. Thereafter the magazine l6 moves upwardly with the lever ll until the end of the spring 17 engages the top edges of the side walls 89 of the magazine It as shown in Fig. 11.. The stapling arm i5 comprising both the lever fl and magazine It are then yieldingly held in raised position above the base 2 by the engagement of the end of the spring ll with the top edges of the stanchions 5 on the base, see Fig. 5. During this movement of the magazine it away from the base 2 the rearwardlyextending rails 56 on the pusher 60 are engaged by the end of the spring 41 to thereby rock the pusher about the bottom edge of its rear wall 63 in a clockwise direction as illustrated in Fig. 11, the arcuate recesses 38 in the side walls IQ of the magazine providing for this action. The rocking movement of the pusher 6B automatically releases its depending lug from its engagement with the shoulder 28 at the forward end of the opening 29 in the magazine H3 and the spring N then acts to advance the pusher 50 in the magazine IE to feed the staples 3 toward the throat 22. The implement is then ready for a staple-driving operation.

When the implement is to be used to apply clinched fasteners it may be supported on a desk or the like or held in the hand. The work 10 to be stapled is placed on the boss 3 at the forward end of the base .2 and the lever ll is depressed against the action of the spring 7, thereby causing the lever and magazine It to rock as a unit about the pivot-pin II until the forward end of the magazine engages with and clamps the work 10 against the boss 3. Continued pressure on the lever ll causes it to move relatively to the magazine IE to the position illustrated in Fig. 6 and the driver 64 to descend through the throat 22 in the magazine. Thus, the foremost staple s is sheared from the remainder of the stick and driven through the throat 22 to cause its legs to penetrate the work and to be clinched by the grooves 4 in the boss 3 on the base 2. During the driving of the foremost staple s the next adjacent staple straddles the shearplate 20 and is supported thereon to provide a reaction to the shearing force of the driver 44 in severing the foremost staple, the rearwardlyinclined edge 28 on the shear-plate serving to guide the staples thereover as they are advanced by the pusher 60. Upon release of the lever I! the spring 41, acting against the top edges of the stanchions 5, rocks the lever upwardly away from'the base 2.until the forwardly-projecting ear 5| on the latch 60 engages the shoulder 21 on the magazine 18, after which the spring acts to raise the magazine Ii away from the base 2. The single spring 41 thus serves a dual purpose to the end of the stick from rising with the driver. As the driver 44 is withdrawn from the throat 22 the whole supply of staples s is advanced by the pusher 60 to position the next foremost staple in the throat. The device may be operated continuously by depressing the lever I1 until the supply of staples s is exhausted.

When the implement is to be used as a tacker the base 2 is swung back through an arc of 180 with respect to the arm 15 to the position shown in Fig. 2. During this movement the rearward edge of the top wall 42 of the lever i1 enters between the rearwardly-extending ears 6 beneath the rearwardly-extending stop 9 on the base 2, the movement of the lever thus being limited by the engagement of the rearward end of the top wall 42 with the stop SI. The lever H may then be depressed with respect to the magazine It, as explained above, to drive the staples s into the work to tack one article to another.

The implement may be folded into small compass with its parts latched together to adapt it to be carried in the pocket as a portable device, the parts being pressed together to the position illustrated in Figs. 4 and 10 and the latch 50 then slid rearwardly to engage its car 52 with the latching shoulder 8 on the stanchion 5 of the base 2, see Fig. 12. When it is desired to use the implement again the latch 50 is slid forwardly and the parts are moved automatically by the spring 4? to return them to operative position as illustrated in Fig. 5.

It will be observed from the foregoing that the present invention provides an extremely simple and compact fastener-applying device adapted for use as an ordinary desk stapler or to be carried in the pocket, purse or hand-bag as a portable implement. It will be observed further that the implement has' a minimum number of parts so constructed and arranged as to adapt it for economical manufacture and assembly. It will also be observed that the implement is of rugged construction to adapt it for continuous use over long periods of time without requiring replacement or repair of its parts.

While there is herein illustrated and described a preferred embodiment of the invention, it is to be understood that various modifications may be made in the structure and arrangement of the parts of the device without departing from the spirit or scope of the invention. Therefore, without limiting myself in this respect, I claim:

1. In a device of the type indicated, a base carrying clinching means, latching means on the base, a magazine mounted for movement toward and away from said base, said magazine being adapted to hold a supply of fasteners, fastener-applying means movable relatively of said magazine to apply fasteners fed therefrom, and means on the fastener-applying means engageable with the latching means on the. base for normally hold the lever I I raised with respect .7Q

to the magazine I 5 and the magazine raised with respect to the base 2. It will be noted that several of the staples s of the stick at the rear of the driver M underlie the hold-down lugs 25 at latching the, magazine and fastener-applying means in position closely adjacent said base.

" 2. In a device of the type indicated, a megazine having an open side extending longitudinally thereof, a lever movable relatively of the magazine for closing the open side thereof, a driver operative by the lever, said lever being movable toward the magazine to drive fasteners fed therefrom and away from the magazine to open the latter to receive a supply of fasteners through its open side, and means for retaining the forward end of the magazine I8 to prevent 75. the lever in closed positio ;t e m ine 'on the base to hold the lever raised with rewhile' permitting relative movement therebetween to apply the fasteners to the work.

3. In a device of the type indicated, a magazine having an open side extending longitudinally thereof, a lever for closing the open side of the magazine, a driver carried by the lever, said lever being movable toward the magazine to drive fasteners fed therefrom and away from the magazine to open the latter to receive a supply of fasteners through its open side, cooperating latching means on the magazine and lever magazine while permitting relative movement therebetween to apply the fasteners to the work, and means for operating the cooperating latching means during the closing movement of the lever to latch the magazine and lever together.

4. In a device of the type indicated, a base having clinching means thereon, a magazine pivotally mounted on the base for movement toward and away from the latter, said magazine spect to the magazine and the magazine raised v with respect to the base.

to retain the latter closed with respect to the having an open side' through which the fasteners are supplied thereto, latching means on the magazine, a lever for closing the open side of the magazine, a slidable latch on the lever, and means on the base for moving the latch into engagement with the latching means on the magazine when the lever is swung to closed position thereon. V

5. In a device of the type indicated, a base having clinching means thereon, a magazine for fasteners mounted for movement toward and,

I to the magazine and the fastener-applying means and magazine to the base. v

6. In a device of the type indicated, a base having clinching means thereon, a latching shoulder on the base, a magazine mounted on the base for movement toward and away from the latter and having a latching shoulder, fastenerapplying means movable relatively of the magazine for driving fasteners fed therefrom, and a latch on the fastener-applying means movable into engagement'with the latching shoulder on the magazine or the latching shoulder on the base.

.7. In a device of the type indicated, a base having clinching means thereon, latching means on the base, a magazine mounted on the base for movement toward and away from the latter and-having a throat through which the fasteners are driven, said magazine having an open side through which the fastenersare supplied and latching means, a lever adapted to close the open side of the magazine, a driver carried by the lever for reciprocation in the throat in the magazine, "resilient means for holding the magazine .raised with respect to the base and the lever raised with' respect to the magazine, and a means on the lever engageable with the latch- 9. In a deviceof the type indicated, abase 1 having clinching means thereon, a magazine mounted fprjm'ovement toward and away from the base, fastener applying means movable relatively of the magazine for driving fasteners fed therefrom, and a spring carried by thefastenerapplying means and directly engageable with both the magazine and the base to hold the fastenerapplying means raised with respect to the magazine and the magazine raised with respect to the base.

10. In a device of the type indicated, a channel-shaped magazine having a bottom wall, side walls projecting upwardly from the bottom wall and an open top,.said bottom wall of the magazine forming a rest for directly supporting a supply of fasteners and having latching means intermediate its ends, a pusher in the magazine having latching means for cooperation with the latching means on the bottom wall of the magazine, a spring for advancing the pusher in the a magazine, said latching means on the pusher bemg engageable with the latching means on the bottom wall of the magazine when the pusher is 'movable relatively of the magazine for driving fasteners therefrom.

11. In a device of thetype indicated, a magazine having an opening therein through which fasteners are supplied, a closure for closing the opening in the magazine, a pusher in the magazine, means for advancing the pusher in the magazine, and means adjacent the rearward end of the magazine for holding the pusher retracted therein, said closure being so constructed and arranged as to actuate the holding means to release the pusher.

12. In a device of the type indicated, a maga- I zine having an open side and latching means intermediate its ends, a lever for closing the open side of the magazine, said lever being movable with respect to the magazineto open the latter to receive a supply of fasteners, a pusher in the magazine, and resilient means for advancing the pusher, said pusher being manually rockable. to engage it with the latching means on the magazine to hold it retracted against the action of the resilient means and adapted to be automatically rocked by the lever to release it from engagement with the latching means on the magazine.

13. In a device of the type indicated, a base, a magazine mounted for movement toward and away from the base, said magazine having an open side and latching means intermediate its ends, a lever for closing the open side of the magazine, said lever being movable with respect to the magazine to open the latter to receive a supply of fasteners, a pusher in the magazine for advancing the fasteners and rockable into ing means on the magazine or the latching means on the base.

8. In a device of the type indicated, a base having clinching means'thereon, stanchions on said base projecting upwardly from the sides thereof, a magazine pivoted on the stanchions' for movement toward and away from the base, a

lever movable relatively of the magazine and having a driver for driving fasteners fed therefrom, and a single leaf-spring having one end attached to the lever and its opposite end engageable with the magazine and the stanchions engagement with the latching means on the magazine, means on the lever engageable with the pusher to rock the latter to release it from engagement with the latching means on the magazine, anda driver operative by the lever for driving fasteners from the magazine.

14. In a device of the type indicated, a magazine having an open side through which fasteners are supplied, a lever for closing the open side of the magazine, a driver operative by the lever, resilient means carried by the lever and engageable with the magazine to yieldingly hold the lever raised with respect to the magazine, a pusher in the magazine, means for advancing the pusher. and interlocking means on the magazine and pusher for holding the latter retracted, said pusher being manually rocked to engage the interlocking means and automatically rocked by the resilient means on the lever to release the interlocking means.

15. In a device of the type indicated, a channel-shaped magazine having a throat at one end through which the fasteners are driven and a bottom wall adapted to directly support a supply of fasteners thereon, a shear-plate at the rear of the throat havin its upper edge inclined rearwardly, and fastener-applying means movable tom wall to brace the latter against displacement rearwardly, and fastener-applying means movable relatively of the magazine for driving fasteners therefrom.

21. In a device of the type indicated, a hollow magazine having a throat through which the fasteners are driven and a bottom wall adapted to directly support a supply of fasteners, a shearplate at the rear of the throat, an abutment at the end of the magazine opposite the throat, a

strut extending between the abutment and the relatively of the magazine for driving fasteners therefrom.

16. In a device of the type indicated, a channel-shaped magazine having a throat through which the fasteners are driven and a bottom well adapted to directly support a supply of fasteners having arched crowns, a shear-plate at the rear of the throat having its upper edge arched to correspond to the arched crowns of the fasteners, and fastener-applying means movable relatively of the magazine for driving fasteners therefrom.

17. In a device of the type indicated, a megazine having a throat through which the fasteners are driven, said magazine being channel-shaped and having side walls and a bottom wall adapted to directly support a supply of fasteners mounted therein between the side walls with the ends of the legs directly engaging the bottom wall, a shear-plate at the rear of the throat, hold-down lugs projecting inwardly from the side walls of the magazine at the opposite sides of the shearplate, and fastener-applying means movable relatively of the magazine for driving fasteners therefrom.

18. In a device of the type indicated, a hollow channel-shaped magazine having a throat through which the fasteners are driven and a bottom wall adapted to directly support a supply of fasteners, a shear-plate at the rear of the throat and spaced from the sides of the magazine to adapt the legs of the fasteners to pass therebetween, means for bracing the shear-plate against displacement rearwardly, and fastenerapplying means movable relatively of the magazine for driving fasteners therefrom.

19. In a device of the type indicated, a channelshaped magazine having a throat at one end through which the fasteners are driven and a bottom well adapted to directly support a supply of fasteners, a shear-plate at the rear of the throat, a strut extending longitudinally of the magazine with one end rigidly connected thereto and its opposite end engaging the shear-plate to brace the latter against displacement rearwardly, and fastener-applying means movable relatively of the magazine for driving fasteners therefrom.

20. In a device of the type indicated, a magezine having a bottom wall with one end folded upwardly and side walls with their ends folded inwardly in spaced relation to the folded end of the bottom wall to form a throat therebetween, said magazine being adapted to hold a supply of fasteners extending thereacross and supported therein by the engagement of the ends of their legs with the bottom wall of the magazine, an abutment at the end of the magazine opposite the throat, a strut extending between the abutment and the upwardly-folded and of the hot shear-plate, a pusher in the magazine having depending flanges embracing the strut, a spring acting between the abutment and pusher for advancing the latter in the magazine, and fastenerapplying means movable relatively of the magazine for driving fasteners therefrom, said strut acting to brace the shear-plate against displacement rearwardly and providing a guide for the pusher.

22. In a device of the type indicated, a megazine having a throat through which the fasteners are driven and. a bottom wall adapted to directly support a supply of fasteners and spaced side walls, a shear-plate in the magazine at the rear of the throat, an abutment adjacent the end of the magazine opposite the shear-plate, a pusher in the magazine having depending end flanges with openings therein and rails at its sides projecting forwardly and rearwardly therefrom, a strut extending between the abutment and shearplate and through the openings in the depending flanges of the pusher, a coil-spring surrounding the strut and acting between the abutment and pusher for advancing the latter, and fastenerapplying means movable relatively of the magazine for driving fasteners therefrom, said shearplate being supported by the strut against displacement rearwardly and said pusher being guided by the strut and the rails at its sides.

23. In a device of the type indicated, a base having clinching means thereon, stanchions on said base projecting upwardly from the sides thereof, a magazine pivotally mounted on the the base and having an open side through which the fasteners are supplied, a lever pivotaliy mounted for movement relatively of the magszine to open or close the open side of the latter, a driver carried by the lever for driving fasteners from the magazine, and a single resilient element engageable with the lever, magazine and base to hold the lever raised with respect to the magazine and the magazine raised with respect to the base. I

24. In a device of the type indicated, a chaps nel-shaped magazine having a bottom wall for directly supporting fasteners and an open top through which the fasteners are supplied, the bottom wall of said magazine having a transverse latching shoulder, a pivoted lever for closing the open side of the magazine and carrying a driver for driving the fasteners from the magazine, a pusher in the magazine, and resilient means for advancing the pusher, said pusher having a depending lug engageable with the transverse shoulder on the bottom wall of the magazine to hold the pusher retracted against the action of the resilient means to adapt fasteners to be supplied to the magazine through its open top.

25. In a device of the type indicated, a base, a magazine mounted for movement toward and away from the base, fastener-applying means mounted for movement relative to the magazine.

29. In a device of the type indicated, a magathe device being operated to drive a, fastener by moving the magazine toward the base to a position closely adjacent thereto and moving the fastener-applying means relative to the mega-- tending longitudinally of the magazine with one structed and arranged as to adapt the lever to be moved to a position closely adjacent the magazine and the latter be moved closely adjacent the' base to drive a fastener, and cooperating means on thelever and base comprising a manuallyoperable member for releasably latching the parts intheir closely compacted relationship. a

' 27. In a device of the type indicated, a base, a magazine for jfasteners, a manually-operable lever overlying the magazine, fastener-applying means operable from the lever, resilient means for holding the magazine raised from the base and the lever raised from the magazine, said magazine, lever and base being so constructed and arranged as to adapt the lever to bemoved to a position closely adjacent the magazine and the latter to be moved to a position closely adjazine having a throat at one end through which the fasteners are driven and a shear-plate at the rear of the throat, a pivot-pin extending through the magazine at the end opposite the throat and having a recess intermediate its ends, a strut ex end bearing against the shear-plate and its-opposite end seated in the recess in the pivot-pin to brace the shear-plate and hold the pivot-pin against movement laterally of the magazine, and means forholding the end of the'strut seated in the recess in the pivot-pin.

30. In a device of the type indicated, a magazine having a throat atone end through which the fasteners are driven and a shear-plate at the rear of the throat, a pivot-pin extending through V the magazine at the end opposite the throat and having a recess intermediate its ends, a strut ex tending longitudinally of the magazine with one end bearing against the shear-plate and the opposite end seated in the recess in the pivot-pin, and a right-angular bracket having an upright cent the base against the action of the resilient.

means to drive a fastener, and cooperating means 'on the lever and base comprising a manually-operable member for releasably latching the parts in their closely compacted inoperative relationship.

28. In a device of the type indicated, a base,

a channel-shaped magazine for fasteners, an inverted channel-shaped lever adapted to telescope over the magazine, a driver mounted on said lever, means for pivotally connecting the base, magazine and lever, resilient means for holding the magazine raised from the base and the lever raised from the magazine, said device being'oper- I ated to drive a fastener by moving the lever to cause it to telescope over the magazine and to move the latter toward the base, and manuallyoperable means for releasably latching the parts in their closely compacted relationship to prevent operation of the device to apply thefasteners.

portion through which the strut extends and a base-portion positioned between the pivot-pin and the bottom of the magazine to hold the end of the strut seated in the recess in the pivot-pin.

-31.' In a device of the type indicated, a mega.-

zine having a throat at one end through which the fasteners are driven and a shear-plate at the rear of the throat, a pivot-pin extending through i the magazine at the end opposite the throat and having a recess intermediate its ends, a strut extending longitudinally of the magazine with one end bearing against the shear-plate and the op- ,posite end seated in the recess in the pivot-pin,

a right-angular bracket having an upright por-.

tion through which the strut extends and a baseportion positioned between the pivot-pin and the- I bottom of the magazine, a pusher slidable on the strut, and a coil spring on the strut between the pusher and upright portion of the bracket whereby the spring yieldingly retains the bracket against the pivot-pin, the pivot-pin retains the bracket against vertical displacement and the bracket retains the end of the strut seated in the recess in the pivot-pin.

ARTHUR H. MAYNARD.

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