US2633571A - Plier type stapler - Google Patents

Description

April 7, 1953 F. s. BoRouGHs 2,633,571

' PLIER TYPE sTAPLER l Filed April 19, 195o 2 SHEETS- SHEET 1 FIG] F' y 8' ATTORNEY April 7, 1953 F. s. BoRoUGHs 2,633,571

' PLIER TYPE STAPLER FRANK S. BOROUGHS Afrox/Vix Patented Apr. 7,

PATENT' omet;

stapler@ Y staple' guid` Within" attached pte" sad stpemag'az body hai/,ineen i tedirig upwaidlyL thy efroin and having integrer do formed-winnen@ V pin pas'ses for ply magazine to the 'fregi 3 being flattened, the foremost ear having an opening large enough to permit the attened portion of the rod to pass rearwardly therethrough to engage the next ear on said pusher member, and said forwardmost ear on the pusher member being adapted to engage the rear surface of the driver to limit forward movement of the pusher member after the last staple on the magazine has entered said passage, and to prevent the pusher member from moving to a position beneath the driver.

Yet another object of this invention is to provide in a stapler of the character described a staple magazine comprising a magazine body having a bottom wall and side walls and inwardly extending flanges at the upper ends of the side walls, a staple guide fixed within the magazine body, a staple pusher comprising a pusher rod, a pusher member slidable on the rod, a member xed to the rear end of the rod and having a U-shaped or bent back portion insertable between the staple guide and the bottom wall of the staple body, the bottom wall of the staple body being formed with an opening and a projection on said U-shaped portion adapted to engage within said opening to releasably latch the rear end of the pusher rod relative to the staple magazine, and a finger extending downwardly from said U-shaped portion to permit the operator to press upwardly on the nger to release said projection from said opening, whereby to permit the staple pusher to be removed rearwardly from the magazine.

Yet a further object of this invention is to provide a strong, rugged and durable plier type stapler of the character described, which shall be relatively inexpensive to manufacture, which shall be easy to manipulate, and which shall yet be practical and efficient to a high degree in use.

Other objects of this invention will in part be obvious and in part hereinafter pointed out.

The invention accordingly consists in the features of construction, combination of elements, and arrangement of parts, which will be exemplified in the'construction hereinafter described, and of which the scope of invention will be indicated in the following claims.

In the accompanying drawings in which is shown various illustrative embodiments of this invention,

Fig. 1 is a top plan view of a plier type stapler embodying the invention;

Fig. 2 is a cross-sectional view taken on line 2-2 of Fig. l;

Fig. 3 is a View substantially similar to Fig. 2 but showing the handles squeezed together to a degree;

Fig. 4 is an enlarged rear end view of the staple pusher device;

Fig. 5 is a partial view taken on line 5-5 of Fig. 2;

Fig. 6 is an enlarged cross-section View taken on line 6--6 of Fig. 3;

Fig. 7 is a cross-sectional view taken on line 'I-I of Fig. 3;

Fig. 8 is a front end view of the staple magazine;

Fig. 9 is a side elevational view of the staple magazine in its full elevated position;

Fig. 10 is a bottom plan view of the staple magazine;

Fig. 11 is a side elevational view of the staple pusher device;

Fig. 12 is a bottom plan view of the staple magazine;

Fig. 13 is a transverse cross-sectional view of the anvil taken on line I3-I3 of Fig. 5; and

Fig. 14 is a cross-sectional view taken on line I4-I4 of Fig. 11.

Referring now in detail to the drawing, IIJ designates a stapler embodying the invention. The same comprises generally an anvil frame body member II interpivoted to a driver frame body member I2 on a pivot pin I3 to which there is also pivoted a staple magazine I4.

The anvil frame body member II (Fig. 2) may be made of sheet metal and comprises a top transversely and longitudinally curved wall I6 having a forward edge I1 (Fig. 3). The wall I6 is formed with an inwardly curved portion i3 at its outer end. Extending from the top wall i6 are integral parallel side walls I9 having lower edges 2d extending upwardly to the rear edge 2l of the portion i8. Extending from the side walls i9 and disposed in the plane thereof and extending forwardly and downwardly are portions 23. The portions 23 have curved forward front edges 24 extending upwardly to the front edge i'I of the top Wall I3. Said side wall portions 23 have downwardly and forwardly inclined rear edges 25 curved forwardly at their lower ends as at 26. Extending forwardly from the side wall portions 23 are parallel side or jaw portions 2l having upper edges 28 extending rearwardly to the lower ends of the edges 24. Extending inwardly from the lower ends of the side walls 2l are coplanar bottom flanges 29 inclined forwardly and upwardly relative to the edges 28. Extending upwardly from the bottom flanges 29 are front anges 3|) having upper edges 3I in the plane of the edges 28. Extending upwardly from the rear ends of the bottom anges 29 are shoulders 32 from which extend upwardly and rearwardly, curved tongues 33 for the purpose hereinafter appearing. The center of curvature of tongues 33 is the axis of pivot pin I3.

The side walls 23 are formed with through openings 34 through which the pivot pin I3 passes, the outer ends of said pivot pin being riveted over, as at 35, against the outer surfaces of the side walls 23. It will be noted that the through openings 34 and the pivot pin I3 are located just above the level of the edges V28 as shown in the drawing and are also located between the edges 24 and 25 of member II. It will now be understood that portions I5, I8 and I9 of member iI constitute a top handle H, whereas the portions 2l, 29 and 30 constitute a bottom jar J for supporting an anvil 35, as will appear hereinafter. It will be noted that member l I is made of a single piece of stamped sheet metal.

The frame body member I2 is also made of a single piece of stamped sheet metal. The same comprises a top wall 40 at the rear end of which is a downwardly extending shoulder 4I contacted by the front edge I'I of wall I6. Extending rearwardly from the shoulder 4I is a curved portion 42 having a curvature the center of which is the axis of the rivet i3. Extending from the top wall 4! are front parallel side walls 43, and extending downwardly from the forward end of top wall 45 is a wall 44 the edges of which contact the inner surface of the side walls 43. The walls 40, 43 and 44 constitute an upper jaw J of the stapler as will appear hereinafter.

Extending downwardly and rearwardly from the side walls 43 are wall portions 45 in the same plane with the walls 43 and contacting the inner surfaces of walls 2-3 of member Walls have upper edges 46 curved ldownwarfllly and rearwardly, and lower edges 41 curved downwardly and re'arwardlsr substantially to the location of the Shoulder 32 of member l l, when the 'stapler in normal position.

Extending downwardly and rearwardly from the side wall portions i5 are side wall portions 4 8, Said side wall portions '48 have upper 'edges 219 `merging at their f ronft ends with A"the edges i6. Extending downwardly and rearwardly from the .rear end s of edges 49 are :inclined edges `5|) .from which there extends 'downwardly rear vertical edges 5|. vEntending Yinwardly from the lower ends of the side walls 4B are *flanges 52 having meeting edges. At the front ends of the .flanges 's2 'are `edges e3 'eentactingenesnou1ders 31 when the .stapler isis 'normal pennen. .at v'the rear ends of thev iflanges l-52 iare Aupwardly curved flange portions '55..

iIt 'will 'now be understood that 'the 'portions 48, 152, 55 .o frame member 12 'constitute a lower handle In. It will also be understood that when 'the handles H, I-I are squeezed together the flaws J, J' will move together .and that when the handles' H' movie apart, the Ajaws 2T. J Lwill separate. Whenthe handles are squeezed toesther, .edges i1 .and '53 move 'away from the shoulders "4| 4and 32 respectively but 'the 4.spaces therebetween will in suon event 'be covered by 'the curved portions 42 .and 33 respectively..

'The danses 29 are each formed with an upwardlir 'pressed boss bump 6.1.1 having 'a .flat top surface 6| parallel to the edges 28, The bumps 60- a're Ain alignment with each other.. The 'anvil 36 comprises a plate 62 which fits in 'between the side walls 21 and contacts the inner surfaces of portions 30 with the top surface of platei62 in the plane of the edges 28, 3|. It will be noted that the side walls 2-1 have notches .21a at their forward ends to receive wings 62a .of vthe plate'GZ. Also, the upwardly extending tongues 30 are notched at their outer sides to .receive Asaid wings, thereby vpreventing side or .end shift.-

ing .0f the plate. The plate `62 is formed with 'a 4pair of downwardly depressed bumps 6d restins upon the bumps. 60.. The lbumps 6u., t4 are -iormed with registering through openings re- -eeivine rivets 65 for riveting the anvil plate 62 to the flanges 2.9 and. thereby interconnecting said `*flanges and preventing the handle member H from opening lup at the split formed by the meetingedges of the flanges 29. It will be noted that while the flanges 29 are inclined upwardly and forwardly the meeting surfaces of thebum-ps '64 and 6U are ina plane parallel to `.the plane of the edges 28, 3|,.so as to retain the anvil plate V62 in the plane offsaid edges.

The upper surface of the V-anvil plate 62 iis formed adjacent its front end .with the -usualian vil slot 66 for clinching the lleg'slof the :staples `-inwardl-y 'when the stapleris used. The bumps 60, 64 provide spaces in'the'h'ead's of 'the rivets Y65 as shown more particularly in Fig.-2if 'the through .opening 66, and-.extending therethrough is a rivet 16 which serves to tix .one end 1| of a drive-r member 12 .to the `underside of said wall. Said end portion 1| eontacts the under.- side of wall 40 vand .is formed with -an .apertured or hole registering `with .the hole y'69. Member l2 may be made lol? spring steel and it has a portion 14 inclined downwardly and forwardly and being longitudinally curved. The radius of curvature of said v'portion T4 is -the axis yof the .rivet '|3. The flowerend fof said portion 'M is somewhat below the .flower edge Matj yof tongue 4d and is spaced rearwardly fromfsaid tongue. The purpose of the driver blade 14 will 'be apparent as the description of' Ythe stapler proceeds.

The staple magazine I4 is vpivoted to the pivot *pin |3 as `shown in ythe drawing. Said staple magazine |4 com-prises a-magazlne body or nous, ing "15 'having a nat bottom Awall I6 from which extend upwardly side walls 17. Extend-ingr inwardly from the upper ends of the side walls TH 'are top flanges T8., the 'inner edges -of which are spaced 'from one `another forming fa slot 1'9 therebetween. The 'bottom wal-l `16 vlli-as a Vrear Iedge 80. The rear corners of tthe butlient `A`wall '16 are cut away 'to form a vrear central gtongue 8| having side .edgesiSZ extending to apair of .alignedfshoulders or side end edges f8.3., 4Said bottom wall is 'furthermore formed with'reetangular'central opening B4, the major portion of which Vis ldisposedwithin the tongue 81|. Said bottom wall '76 'isfurtherm'ore vformed with an intermediate cutaway portion 85 forming parallel transverse edges 86 'and 81, .The ,metalbetween the 'edges '86 and .81 is split alone the 'longitudinal midseetion and pressed downwardly vinto the plaire 'of .the side walls 'iltand .rounded ofi to form ears s3.. 'apertured as fat "8.9 and through which the pivot Vpin .t3 passes.. *the "axis of the vope.r1.i..n.g.s 8.9 'in fthe Aears is somewhat .below the plane of the underside ofthe bottom Wall '16,.

The bottoni wall "Si is furthermore-formed for the 'purpose hereinafter appearing. adjacent lthe .edge ttt '.(Fie. lf2?v 'with athroueh opening 90 located on the .longitudinal "midseetion of the housing "1.5- Aet "the `A.forward vend of the bottom wall it 'is afront edge 3l. `front vcorners of .the bottoni 'wall T6 are ed Wai' 'to form 'a .central tongue 9.'.2 at'the iront end .having side edges.' 93 extending to front 'sideedees'or shoulders 94. The side'walls'li oithestaplehousins'have rear edges V in the Aplane Vof the rear edges 183. Said .side walls .1l furthermore 'have upwardly and iorwardlviuelined .edges ..95 .extending .from the-rearedges 95 tothetopfflanees 18. .et the frontend A.of .the housing .the side walls extend forwardly .of .the shoulders ,9.4, .as at '96.. .The llower Vedges of. .portion |16 entend down .tothe plane of theundersideof. "bottom wall 1s. Be.- -tween the Vportions. 96 -andedees .94... however.

Extending fromuthe iront-ends-of said wall .portions n9,6 A.are firent wall. portions .98 .disposed .in one plarleend having meeting edges f9.9. The 1loweredges of the frontfwalls starai-n .thetplane of the .1.loweredses ofside walls 96 `.and hence likewise in vthe .plane 'of `the undersurface of `the .bottom 'wall 16 of the magazine housing. The

:upper Vends effi/Valls S918 4'are Ijust.rear. of ithe lower 'end .of :tongue A4.

.Disposed iwi-thin -themagazine .housing '115 'is a staplefguide orfeorelI-M'providcdfwith aftop ing downwardly from .saldi-top 'wall'flll earefside walls |02 spaced inwardly from the side walls 11 of the housing. The lower edges of member contact the upper surface of the bottom wall 10. A staple strip may ride on member |00 with the crowns of the staple resting on the top wall |0| and beneath flanges 10 and with the legs of the staple strip in the space between the walls |02 and 11. The top wall |0| is formed with a downwardly depressed boss |03 having a central opening through which extends a rivet mi! which passes likewise through the opening 90 for attaching the core or guide |00 to the housing 15. The upper head of the rivet is received within the recess bump `|03 so that the staple strip may ride over the rivet.

The rear ends of the top of side walls of the guide |00 are in a vertical plane passing through the edge 80 of the bottom wall 16. Said side walls |02 are formed with downwardly extending tongues |05 contacting the side edges 82 of the tongue 8|, with the inner ends of the tongues |05 contacting the shoulders 83. The lower end edges of the tongues |05 are in a plane of the undersurface of the bottom wall 10.

At the forward edges of the side walls |02 are likewise a pair of tongues |06 contacting the side edges 93 of vthe tongue 92. VThe rear ends of the tongues |05 contact the shoulders 90. The lower edges of the tongues |08 are in the plane of the undersurface of the bottom wall 16. The front ends of the side walls |02 and the front end of the top wall |0| arein a common plane spaced somewhat rearwardly from the inner surfaces of the iront wall portions 08, forming therewith a passage of a width sufficient for a staple to be `driven downwardly therethrough against the anvil'. It will now be understood that side movement or end movement of the guide |00 relative to the staple housing is prevented due to the engagement of tongues |05 and |06 with the tongues 00 and 02 and with the shoulders 83 and 01| respectively. Y.

It will be observed that the front walls 98 extend above the flanges 18. It will also be observed that the lower end of the driver blade is contacts the inner surfaces of the upper ends of said front walls 08. When the handles are squeezed the jaws J and .l move closer to each other and the blade enters the passage P between the front end of the staple guide and the front walls 98 to expel or depress a staple through said passage against the anvil for a stapling operation.

It will be noted that the rivet |04 is spaced rearwardly of the pivot pin I3 and that the staple magazine i4 may be rotated in a clockwise direction relative to the frame body member I2. Normally the major portion of the rear end of the staple magazine projects above the edges 49 of the frame body l2 and the forward end of the staple magazine projects below the upper jaw J" of said frame body i2.

Spring means is provided to return frame body members and |2 and the magazine body to the normal inoperative position, shown in Figs. 2 and 9. To this end there is attached to the underside of the staple magazine body by means of said rivet |04 a spring S. The spring S has an intermediate portion ||0 contacting the portion of the bottom wall 'ljust rearwardly of the edge 80. It is formed with a through opening through which the rivet |04 passes, said rivet having a head at its underside contacting the underside of said portion H0. Thus the single rivet |04 ,serves to attachthe spring S to the 8 staple magazine as well as serving to attach the staple guide to the staple housing.

Extending rearwardly from the intermediate portion ||0 is a rearwardly and downwardly inclined spring tongue having an upwardly bent end ||2 contacting the upper side of the connecting pin 68. Extending forwardly from the intermediate portion ||0 is a downwardly inclined spring portion ||3 having an upwardly turned end portion ||4 contacting the upper surfaces of the bottom flanges 29. When the handles H, H are rst squeezed from the position shown in Figs. 2 and 9, the bottom jaw J moves upwardly toward the front end of the staple magazine. During this operation the staple magazine turns slightly in a counterclockwise direction relative to the upper jaw J. Continued squeezing action of the handles after the lower jaw J, with the work to be stapled thereon, contacts the forward end of the staple magazine, will cause the lower jaw, together with the staple magazine, to move in a clockwise direction relative to the upper jaw, to cause a staple to be ejected for stapling the work. Upon release of pressure from the handles H, H', the handles and the staple magazine are moved back to normal position by the spring S. Thus, during the first part of the squeezing operation of the handles the forward end H3 of the spring is tensioned by movement of the lower jaw J upwardly towards the upper jaw J. During the remainder of the squeezing operation the rear end of the spring is tensioned since the rear end of the staple magazine moves in a clockwise directon relative to the lower handle H.

p Mounted on the staple magazine is a pusher mechanism |20 for advancing a staple strip within the magazine. Said mechanism |20 comprises a pusher rod |2| having at its front end a flattened and widened part |22. Riveted or other-A wise attached to the rear end of the pusher rod |2| is a latching member |23. Said latching member |23 comprises a vertical wall |24 formed with an opening to receive the rear end of the rod, said rear end being riveted to the wall |215 at |25. The wall |25 extends below the pusher rod |2|, and extending from the lower end or" said wall is a wall |210 parallel to and disposed below the rod. Extending from wall |20 is a bent back portion |21 from which there extends a portion |28 disposed parallel to and below the wall |26. Extending downwardly from the rear end of wall |28 is a vertical wall |29 in the plane of wall |2d. Pressed downwardly from the rear end of wall |26 is a lug |30. Cut from wall |20 is a downwardly and rearwardlyinclined tongue |3|.

Slidably mounted on the rod |2| is a pusher member |32 which may be made from a single piece of die cut and stamped sheet metal. The pusher member |32 has a top wall |33 which contacts the top wall i0| of the guide |00. Extending downwardly from the sides of the top wall |33 are side walls |35 which Contact the outer surfaces of side walls |02.

Extendingupwardly from the front end of top wall |33 is an ear |35 formed with a central opening |30 of sufficient diameter that the iiattened part or tongue |22 may readily pass therethrough. Cut from the top wall |33 and extending upwardly therefrom is an ear |31 parallel to ear |35 and formed with an opening |38 suiciently large to permit the push rod |2| to be slidably moved therethrough, but of smaller diameter than the width of the attened Atongue |22, so

that-.the ear`|31 will limit rearward movement of 9 the push rod tzt, dueto. contact or the. flattened tongue I22; with. said ear..

Also out from the top wall. [331, and extending upwardly therefrom is4 an ear t4!)V similar to ear tail and formed with anopening loi of the same size: as opening the and likewise permittingh the push rod I2! to beslidably moved therethrough. Qn push rod idk and between ear Ido and wall $.24 is. a coil compression spring M2. It will now `be. understood that in. use the push member` i32 is slidably mounted on thel guide Hill. The push rod' I2 i is disposed above and. in parallel relation,- ship tothe staple magazine housing. The U- shaped portion L26, |21 and t28, is ofv such size that it; can be inserted into the staple guide lilo so as to be. disposed between the guide and the bottom wall of the housing. The tongue I3l will snapl into the,` opening'd` so as to engage the, rear edge 84a; of said opening to releasably latch the pusher mechanism to the magazine.

The spring I42 urges the. pusher` member #3.2 forwardly to advance the staple. strip within the magazine. When the last. staple of a staple strip has been ejected, the upper end of the ear 35 wil-l contact the rear surface of the lower end of the driver blade T4' to stop further forward moyement of the pusher member i312. With such con,- struction it is not possible for the pusher member to move beneath the driver blade. When it is desired to place a new staple stripfin the magazine, member IIB. is pushed upwardly to release the. tongue'l3l from the opening 8f3. The entire pusher mechanism I2!) may then be. moved rearwardly from the magazine. A staple strip may then be inserted through the rear end of the magazine. The pusher mechanism may then be reinsertedand pushed forwardly until the tongue 31 again latches against the edge 84a. The bump E38 limits upwardly movement. of wall I2.8 toward wall IZB.

`It will be observed that the pivot pin I3 is located above the portion I`I3 of the spring. If it were attempted to rotate the staple magazine in a counterclockwise direction relative to the frame body member i I, the pivot pin I3 pressing on the spring portion H3 between the outer end IM thereof, and the intermediate attached portion I I'Il", would prevent such movement so as to make sure that the front walls 9S of the magazine did not move below the lower end 46a of the front wall 44, and also to make .sure that contact is not lost between the driver blade 'i4 and the innerA surface of the upper end of said front walls 98.

It will thus be seen that there is provided a device in which the several objects of this invention are achieved and which is well adapted to meet the conditions of practical use.

As various possible embodiments might be made of the above invention, and as various changes might be made in the embodiment above setforth, it is to be understood that al1 matter herein set forth or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.

Having thus described my invention I claim as new and desire to secure by Letters Patent:-

1. A plier type hand stapler comprising a pair of interpivoted and intertted frame body members having forward jaw portions, intermediate crossing portions, and `rearwardly extending handle portions, and a staple magazine between said frame body members and pivoted thereto on a. common pivot, and a spring attached to the magazine at a point spaced from the common 10 pivot. and having one end engaging the j .aw of one body member and the.v handleoi the other vbody member..

2.-.. A plier type,A handv stapler comprising a. pair ot interpivoted and interitted trarne body inem: bers having iorward iaw portions.. intermediate crossing portions,l andrearwardly extending handle portions, and a staple magazine between said frame body membersv and. pivoted thereto on a commonpivot, and esprit-1g attached to. the magazine at a point spaced from the common piyot and havingl one end engaging the. jaw of one body member and the handle of theA other body member, said staple magazine comprising a staple body, a staple guide within Said body, and the. means. for attaching the spring to. the

magazine serving also. to` attach the magazine body to. thefmagazine guide.

3. plier type handstapler comprising apair of frame. body members interpivoted scissors fashion by a pivot pin. one frame. member having an upper.- forwardly extending jaw and a lower rearwardly extending handle and an interconnecting crossing portionJ and the other frame body member having a lower iorwardly extending .law and all upper rearwardly oXtoIldng handle and a crossing interconnecting portion, and a staple magazine pivoted to. said frame body mem.- bers onv their common pivot, and aA spring at.- tached to the underside of the magazine and having a forwardly extending free end, portion engaging said lower jaw, and a. rearwardly extending free end portion engaging the lower handle.

4. An plier type hand stapler Comprising anali' oi frame body members. internivoted scissors fashion by a pivot pin, one frame member having an upper forwardly extending jaw and a. lower rearwardly extending handle and an interconnecting crossing portion, and the other frame body memberv having a lower forwardly extending jaw and an upper rearwardly extending handle and a` crossing interconnection portion, anda staple magazine pivoted to said frame body mem.- bers on their common pivot, and a spring attached tov the-underside of the magazine and having a forwardly extending free end portion engaging said lower jaw, and a rearwardly extend.- ing free end portion engaging the lower .handleJ the point of attachment of the spring to the staple magazine being disposed rearwardly of. the common pivot of the trame body members.. and the staple magazine.

5. n plier type hand Stapler comprising a pair o f interpivoted frame. body members, one member comprising a lower `forwardly extending jaw and upper rearwardly extending handle and an interconnecting crossing portion, the other iraniebody member comprising an upper forwardly eX.1 tending jaw and a lower rearwardly extending .handle and an interconnecting crossing portionl a pivot pin passing through openings in said crossing portions to interpivot Said frame body members scissors fashion, a staple magazine Within and between said frame body members and comprising a magazine body having openings through which said pivot pin passes for pivotally connecting the staple magazine to said body traine members a staple guide within said mage azinebody. means for attaching the guide to the magazine body, and a Spring having an intermediate portion attached to the underside' of the magazine body by the means which attaches the body .to the .staple guide, and said spring having .a forwardly extending free end portion engage 4ing the lower jaw, and a rearwardly extending free end portion engaging the lower handle.

6. A plier type hand stapler comprising a pair of interpivoted frame body members, one member comprising a lower forwardly extending jaw and an upper rearwardly extending handle and an interconnecting crossing portion, the other frame body member comprising an upper forwardly extending jaw and a lower rearwardly extending handle and an interconnecting crossing portion, a pivot pin passing through openings in said crossing portions to interpivot said frame body members scissors fashion, a staple magazine within and between said frame body members and comprising a magazine body having openings through which said pivot pin passes for pivotally connecting the staple magazine to said body frame members, a staple guide within said magazine body, means for attaching the guide to the magazine body, and a spring having an intermediate portion attached to the underside of the magazine body by the means which attaches the body to the staple guide, and said spring having a forwardly extending free end portion engaging the lower jaw, and a rearwardly extending free end portion engaging the lower handle, the means which attaches the staple guide and the spring to the staple magazine body being disposed rearwardly of said pivot pin.

7. A plier type hand stapler comprising a pair of interpivoted frame body members. one member comprising a lower forwardly extending jaw and an upper rearwardly extending handle and an interconnecting crossing portion, the other frame body member comprising an upper forwardly extending jaw and a lower rearwardly extending handle and an interconnecting crossing portion, a pivot pin passing through openings in said crossing portions to interpivot said frame body members scissors fashion, a staple magazine within and between said frame body members and comprising a magazine body having openings through which said pivot pin passes for pivotally connecting the staple magazine to said body frame members, a staple guide within said magazine body, means for attaching the guide to the magazine body, and a spring having an intermediate portion attached to the underside of the magazine body by the means which attaches the body to the staple guide, and said spring having a forwardly extending free end portion engaging the lower jaw, and a rearwardly extending free end portion engaging the lower handle, the means which attaches the staple guide and the spring to the staple magazine body being disposed rearwardly of said pivot pin, said pivot pin being disposed above and closely adjacent to the forwardly extending portion of said spring.

8. A plier type hand stapler comprising a pair of frame body members interpivoted scissors fashion by a pivot pin, one frame member having an upper forwardly extending jaw and a lower rearwardly extending handle, and the other frame body member having a lower forwardly extending jaw and an upper rearwardly extending handle, and a staple magazine pivoted to said frame body members on their common pivot, said upper jaw comprising a top wall and side walls and a front wall extending downwardly from the top wall, and said staple magazine having a front wall extending upwardly above the lower edge of the front wall of the upper jaw and being disposed just rearwardly of said lower end, said staple magazine having a passage in back of the front wall thereof through which a staple may beA ejected from the magazine, and a driver attached tothe underside of the top wall of the Aupper jaw and having a blade contacting the rear surface of the upper end of the front wall of said magazine, and adapted to enter vsaid passage to eject staples from the magazine.

9. A plier type hand stapler comprising a pair of frame body members interpivoted scissors fashion by a pivot pin, one frame member having an upper forwardly extending jaw and a lower rearwardly extending handle, and the other frame body member having a lower forwardly extending jaw and an upper rearwardly extending handle, and a staple magazine pivoted to said frame body members on their common pivot, said upper jaw comprising a top wall and sidewalls and a front wall extending downwardly from the top wall, and said staple magazine having a front wall extending upwardly above the lower edge of the front wall of the upper jaw and being disposed just rearwardly of said Alower end, said staple magazine having a passage in back of the front wall thereof through which a staple may be ejected from the magazine, and a driver attached to the underside of the top wall of the upper jaw and having a blade contacting the rear surface of the upper end of the front wall of said magazine, and adapted to enter said passage to eject staples from the magazine, said blade being curved longitudinally, and the center of curvature thereof being the axis of the conimon pivot for said frame body members and magazine.

10. A plier type hand stapler comprising a frame body member having a top wall, parallel side walls extending downwardly therefrom and forming an upper handle therewith, forward and downward extensions from said side walls forniing an intermediate crossing portion, portions extending forwardly from said crossing portions, and bottom flanges extending inwardly from the lower ends of said forwardly extending portions and forming a lower jaw therewith, a second frame body member comprising an upper jaw having a top wall and side walls extending downwardly from said top wall, and rearwardly and downwardly inclined extensions on said side walls forming intermediate crossing portions which cross the rst mentioned crossing portions, rearward extensions extending from the crossing portions of the second frame body member having at their lower ends inwardly extending bottom flanges having meeting edges and forming with said rearward extensions a lower handle, a pivot pin passing through openings in the crossing portions of said body members and interpivoting the same scissors fashion, a staple magazine member disposed within and between said two frame body members and pivoted to said pivot pin, one end of said magazine member being in proximity to the end of said upper jaw, and unitary spring means carried by one of said three members rearwardly of said pivot pin and engaging the other two members, said spring means simultaneously urging said handle members apart and one end of said magazine member away from said upper jaw.

11. A plier type hand stapler comprising a frame body member having a top walLparallel sidewalls extending downwardly therefrom and forming an upper handle therewith, forward and downward extensions from said side walls forming an intermediate crossing portion, portions extending forwardly from said crossing portions,

essaim and bottom ilanges Iextending' inwardly from the lower ends of said :forwardly extending ,portions and forming a lower jaw therewith, Aa second frame body member comprising an upper jaw having a top wall and side walls extending downwardly 'from said top wall, and rearwardly and downwardly inclined extensions on said side walls forming intermediate crossing portions which cross the Erst mentioned crossing portions, 'rearward extensions extending from the crossing portions of the second .frame body member having at their lower ends inwardly extending bottom flanges having meeting edges and forming with said rearward extensions a lower handle, 'a pivot pin passing through openings in the crossing portions of said body members and interpivoting the same scissors fashion, a staple magazine disposed within and between said frame body members and pivoted to said pivot pin, a spring attached to said magazine rearwardly of the pivot and having end portions one of which engages the lower jaw and the other which engages the lower handle, said staple magazine comprising a staple body and a staple guide within said body, and the means which attaches the spring'to the magazine serving to interconnect the staple body, staple guide and said spring.

l2. A plier type hand stapler comprising a frame body member having an upper forwardly extending jaw, said jaw comprising a front wall, crossing portions extending from said jaw, and a lower handle extending rearwardly from said crossing portions, said crossing portions being formed with aligned openings, a second frame body member comprising a rearwardly extending I upper handle, crossing portions extending downwardly from said upper handle and crossing the crossing portions of the rst frame body member, and a lower jaw extending forwardly from said crossing portions of the second frame body member, the crossing portions of the second frame body member being formed with openings registering with the rst mentioned openings, a pivot pin passing through said registering openings to interpivot said frame body members, an anvil plate attached to the lower jaw, a staple magazine formed with openings through which said pivot pin passes, said staple magazine being disposed within said crossing portions and between said frame body members, and said staple magazine comprising a front wall extending above and at the rear of the lower end of the front wall of the upper jaw.

1S. A plier type hand stapler comprising a frame body member having an upper forwardly extending jaw, said jaw comprising a front wall, crossing portions extending from said jaw, and a lower handle extending rearwardly from said crossing portions, said crossing portions being formed with aligned openings, a second frame body member comprising a rearwardly extending upper handle, crossing portions extending downwardly from said upper handle and crossing the crossing portions of the first frame body member, and a lower jaw extending forwardly from said crossing portions of the second frame body member, the crossing portions of the second frame body member being formed with openings registering with the iirst mentioned openings, a pivot pin passing through said registering openings to interpivot said frame body members, an anvil plate attached to the lower jaw, a staple magazine having openings through which said pivot pin passes, said staple magazine being disposed within said crossing portions and 34 between said frame body members, and said staple magazine `coimsrising a iront wall extending above and at the rear of the lower end of the front wall of the upper iaw, said staple magazine being formed with a passage in back of 'the :iront lwall thereof and a driver attached to the underside of the top wall or the upper .jaw and having a driver blade portion contacting the inner surface of the upper end vof the :front wall of the staple magazine.

14. A plier type hand stapler `comprising a body member 'having an upper 'forwardly extending jaw, .said jaw comprising a 'front wall, crossing portions extending `iro-m `said jaw, and a lower handle extending rearwardly from said crossing portions, said crossing portions being formed with aligned openings, a second frame body member comprising a rearwardly extending upper handle, crossing portions extending downwardly from said upper handle and crossing the crossing portions of the rst frame body member, and a lower jaw extending forwardly from said crossing portions of the second frame body member, the crossing portions of the second frame body member being formed with openings registering with the first mentioned openings, a pivot pin passing through said registering openings to interpivot said frame body members, an anvil plate attached to the lower jaw, a staple magazine formed with openings through which said pivot pin passes, said staple magazine being disposed within said crossing portions and between said frame body members, and said staple magazine comprising a front wall extending above and at the rear of the lower end of the front wall oi the upper jaw, said staple magazine being formed with a passage in back of the front wall thereof and a driver attached to the underside of the top wall of the upper jaw and having a driver blade portion contacting the inner surface of the upper end of the front wall of the staple magazine, and said driver blade portion being curved longitudinally and the center of curvature of said blade being at the axis of the pivot pin.

l5. A plier type hand stapler comprising a body member having an upper forwardly extending jaw, crossing portions extending from said jaw, and a lower handle extending rearwardly from said crossing portions, said crossing portions being formed with aligned openings, a second frame body member comprising a rearwardly extending upper handle, crossing portions extending downwardly from said upper handle and crossing the crossing portions of the rst frame body member, and a lower jaw extending forwardly from said crossing portions of the second frame body member and comprising side walls and bottom inwardly extending ilanges, the crossing portions of the second frame body member being formed with openings registering with the first mentioned openings, a pivot pin passing through said registering openings to interpivot said frame body members, an anvil plate attached to the ilanges of said lower jaw, a staple magazine formed with openings through which said pivot pin passes, said staple magazine being disposed within said crossing portions and between said frame body members, and a longitudinal staple guide within the staple body, the staple guide and staple magazine being formed with aligned openings, and a spring having an intermediate portion contacting the underside of the staple magazine and being formed with an opening registering with the opening therein, and a rivet passing through the openings in the staple guide and staple magazine, and in the intermediate portion of said spring, and serving to attach said magazine to the guide and spring, and said spring having;r a forwardly extending portion enw gaging the upper surfaces of the bottom flanges of the lower jaw and a rearwardly extending portion pressing down on the rearwardly extending lower handle.

16. A stapler according to claim 10, further comprising an anvil carried by said lower jaw, said anvil being secured to both of said inwardly extending bottom flanges for holding said anges xedly positioned with respect to each other.

` FRANK S. BOROUGHS.

16 REFERENCES CITED UNITED STATES PATENTS Number Name Date 389,922 Delagneau Sept. 25, 1888 728,898 Gastaldi May 26, 1903 1,836,944 Vogel Dec. 15, 1931 2,006,054 Maynard June 25, 1935 2,028,350 Polzer Jan. 21, 1936 2,031,320 Kuch Feb. 18, 1936 2,354,760 Lindstrom Aug. 1, 1944 2,499,843 Berger Mar. 7, 1950

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