US2438713A - Fastener-applying implement - Google Patents

Description

March 30, 1948.

A.l H. MAYNARD FASTENER-APPLYING IMPLEMENT Filed Feb. 26, 1946 000000, "/l/l/I/i In Uxen Por: rlfl UFE/Va, I? 0rd March 30,1948. A. H. MAYNARD 2,438,713 l FASTENER-APPLYING IMPLEMENT Filed Feb. 26, 1946 2 Sheets-Sheet 2 A *Y E ffff 6% [n den Por:

rllz ard u Patented Mar. 30, 1948 FAS TENER -APPLYI'NG IMPLEMENT Arthur H. Maynard, Warwick, R. I., assignor to Boston Wire Stitcher Company, Warwick, R. I., a corporation of Maine Application February 26, 1946, Serial No. 650,190

14 Claims. (Cl. 1-3) rihis invention relates to improvements in iastener-applying implements for attaching papers and other sheets, fastening labels and tags to articles of commerce and for use generally for stapling and stitching together various objects.

One object of the invention is to provide an implement of the type indicated which is more convenient to load with a supply of fasteners and easier to operate for the purposes specified.

Another object is to provide an implement having a, top-loading magazine for the fasteners with an operating lever forming a closure for the magazine and improved means for manually opening and closing the magazine. v

Another object is to provide an implement of the type indicated having means to prevent the driving of a fastener or staple accidentally to cause injury to the hands when the operating lever is carried down onto the magazine to close the top of the latter.

Another object s to provide an implement of the type indicated having fastener-applying means in the form of a staple-driver which may be released from the operating leverwhen the latter is withdrawn from the magazine for supplying staples thereto.

Another object is to provide an implement of the type indicated having manually-operable means for releasing the lever from the magazinearm to open the magazine for loading it with a supply of fasteners or staples and concurrently releasing the staple-driver from the lever.

Another object is to provide an implement of the type indicated with the staple-driver releasable from the operating lever to adapt it to remain in the throat at the end of the magazine to prevent staples from entering said throat and being ejected therefrom when the operating lever is closed down onto the magazine after loading the latter.

Another object is to provide an implement of the type indicated which may be manufactured at economical cost while rendering it more durable for long periods of use.

Further objects of the improvement are set forth in the following specification which describe-s a preferred form of construction of the device, by way of example, as illustrated by the accompanying drawings. In the drawings:

Fig. 1 is a general view in perspective of the present improved fastener-applying implement;

Fig. 2 is an enlarged longitudinal sectional view of the same;

Fig. 3 is a similar longitudinal sectional view of the implement showing the combined operating lever and cover raised above the magazinearm; v

Fig. 4 is a transverse sectional view of the fore part of the magazine-arm and operating lever on line 4 4 of Fig. 2;

Fig. 5 is a part-sectional front View of the device with the parts shown in the same position as inFig.2;

Fig. 6 is a, transverse sectional View of the operating lever on line l-iy of Fig. 3;

Fig. 7 is a longitudinal sectional View showing the magazine-arm depressed with Vthe operating lever or cover turned back and illustrating the method of depressing the staple-pusher to retain it in retracted position for loading the magazine with staples;

Fig. 8 is a front view of the magazine-arm and staple-driver, shown in the same position as in Fig. 7, with the front plate on the driver partly broken away;

Fig. 9 is a, composite perspective view of the slidable latch and bowed spring which cooperates therewith; and

Fig. 10 is a composite perspective view of the parts of the staple-driver.

Referring to the accompanying drawings, the present improved fastener-applying implement is similar in certain respects to that shown and described in my prior application for United States A Letters Patent, Serial No. 610,961, led August 1'7, 1945, but embodying several improvements therein as will be later set forth. In general, the improved device comprises a relatively flat base 2, a, hollow magazine-arm 3 for containing a supply of fasteners such as wire staples of inverted U-shape and an operating lever li which also constitutes acover for the magazine rin the arm.

The base 2 may be constructed of sheet-metal and provided with clinching means 5 at its forward end in the form of a protuberance struck up from the metal and indented with grooves 6 for receivingv the legs of the staple to bend them against the under side o-f the work. At the rearward end of the base 2 isa standard comprising a pair of parallel stanchions l folded upwardly from the sides of the base to provide a mounting for the pivoted magazine-arm 3. The metal plate or base 2 may be mounted in an ornamental support or sub-base constructed o-f plastic or the like, as disclosed in the pending application referred to above, but not herein shown; or the implement may be used without such a support for'its base.

The magazine-arm li may be constructed of sheet-metal in channel-shape with a bottom 8, and upstanding side walls 9, the rearward end of ,provideV 'd l zpresfedpdQWIL-liritbe, bevel-.edged opening 26. iny the bottomiof the 'arrn 3'in the manner shown the arm being positioned between the stanohions 'I and pivoted on a transverse pin I@ extending through ears at the ends thereof.

The operating lever 4 which forms a cover for the magazine in the arm 3 may also be constructed from sheet-metal in inverted channel- I shape with a top II and sides I 2 folded downwardly therefrom.. The sides I2 of the lever 4 are adapted to "straddle the sides of the arm 3 with their rearward ends pivoted on the pin IllV which hingedly connects the arm to the stanchions 'I' on the base 2.

y The forward end of the arm 3 is providedewith inwardly-foldedportions I3 Which'cooperate; with a shear-plate I'4 spaced rea'rwardlytherefrom to form a throat I5 through which the staples are driven into the work. Th stapless are fed forwardly in the magazine-arm and across the shear-plate I4 into the throat I5 by means of a staple-pusher/IG. The ,staples s may be assembled in a stick' or reiill and inserted in the magaz ine of, thearm 3 with theirlegs resting on the a Abottorng thereof-fExjtending `rearwardly from the shear-plate I4 betweenA the sides 9 of the karm 3 is a rod` II fastenedat itsjwopposite end in jan angle-*shaped supportjl which is held in place by the transverse pivot-pin Il). A helical spring .2qsurroundsl the .rod I 'I between the pusher It and the support-Ifor'slidingrthe pusher forwardly to advance the Y'staples in the magazine.

' "I'he staple-pus'ler` I G is of inverted U-shape with i parallelxfsides 2"I abut the sidesV 9 of the arm 3 andrest on its'bottom 8. lAt the rearward y end of the sides; 2-I` o'f 'the inislfiery I6 their bottom edges areV recessed lor -cutV away at '2 3`atV arelative ly long angle with'a sharper bevel at the end to etentlprojections 25 f which may be in Fig' -7- to. retain. the Pusher i' jesi retracted position f 1 The' operating lever 4 is heldin connection with the magazinefarm 3, while being movable VVwithin prescribed vlimits relatively t l 1e"re zto,4 bymeans of a manually-slidable latch- S whichY engages with Y Y thestapledriizerti.4 v"Tl'ie Ylatcli 30, shown in perspective Aviewin Fig. 9, Yin Ythe; formv of a relatively narrowA flat bar'having Ian upturned arcuate portion at its rearward endV which is knurled or Aiiuted on its surfaceto .p'ovide av finger-grip 3 I.

--Atits forward end thelatcli has a projection Voffsetbelow its upper'facefa'nd narrowed at the sidesV to form'a vlug or'prongSZ adapted to slide through a rectangular-op'ening234- adjacent the top ofthe staple-driver'35; see Fig. 2.'

7 shown in *Figlf 10,` the Vstaple-driver-I55Voornprisesahardenedrnetal blade formed with offset shouldered a'nges orfflns 36 at its sides which are slidable' in grooves at the sides ofthe throat vI5 in the arin SAdjacentitsf lower edgefthe thickerV portion 'off the driver-blade 35 is vformed with iateraiiyexteding pfortiens which provide i deert-Shoulders @adapted rfb-engag with a pair of lugs 39; seejFig.' v8,-Y bent inwardly from the sideshof thej arm 3: near'its top tolimit'the upward movement of the driver and vprevent its Yremoval from the magazine-ann. OverlyirigA` the forward face fof the driver-35 risa fiat'sheetmetal plate 40 havinglug's or` ears 4 I folded rearwardly at right-'angles "theretoto vadapt them to ,project'acrossV the shoulders atAV the 'sides' of the thicker portion Vof Vthe "driver 535' with theirY ends atraer the @agarrarse Therm 4| .adaptedtoadaslstopszeeeaeeable With-,the top ofthe lugs 39 as showninig.8"toprevent the 4 driver from dropping out through the throat I5 in the arm 3. The staple-driver 35 may be assembled in the throat I5 by springing the upper portion of the plate 4U outwardly to adapt the ears 5 4I to be passed by the lugs 39 on the upper sides of the arm 3; and the same procedure may be adopted v f or lrernoving l the driver from the imple-Y ment should repair or replacement thereof be ree quired. The upper portion of the plate 40 is out l0 r away at 42 to register with the opening 34 in the staple-driver 35 and adjacent its lowe1` edge it is perforatedwith a circular opening 43 for receiving a 4rivetY 45 inserted through a ycorresponding VholeglV at the. bpttom of the driver-blade 35 and 151 headed over tojgseoure the two parts in connectin." 'By'thi's'form of construction the stapledriver`35 islpro'vided with grooves at its sides for straddling the inwardly-folded portions I3 at the front of the arm 3 which form parallel ways VforsliclablyY mounting the driver.

, VH.-.QbSel`V ed. by. l-'Qfel'ene 50; Figi 2 .0f 'the drawingsgthe forward lug or prong- 32- of the een si engages; #muah thel @entre invr the v driverebladef-SE with a slghliolearance the Vlatch beingYslidablefbeneath `tl'ie` top wall'l l Vof the VAoperating lever V'4'Y with fitsY rearward vdinger-piece -SI vprojecting upwardly throughanfelongated slot '49 tlrierein.-l -Atjthere`arWard.side -of- -the' s lot 49 a lug or"projeet'ion'f5i)4 is bent downwardly and'V recessedalngits sides topro'videa lnarrower pro'jeetion5l", see-Fi'gr./3,Ywhich engages through anV opening=54 ina bow-shaped@ spring 55.- The relatively latf forward portion" ofi-thespring -55 underlies the latch @fand-'forms ab'e'aring there- 1 pairsfoilugs 56 pierced :frrnrthesides |21v ofthe lever? 4 Yand*bent iifiwardly`- therefrom asv-shown supported beneath the top wall `I' IV Aof the. lever twith a space therebetweenlinlwhich the -latch,

' Y atitsforward endllt'oMprventllateralldisplaoeits retracted v.position .ias ;represented. iin `Fig.Y 3.V

Rearwardlylof A.the notch-.5lithe .metal n of the spring55`is sheaifedlto provide a .longitudinallyexinendingY 'spring'rtorigue,` seeA lFig'. 9, having 55 A its vforward- -end orirnpedr-curled 'overlv to form an upstanding ldetentprotuberancelIwhich is 'adapted to engage im .aft-ransversezs-1or .or repenblade 3 5 as shownin Fig 2. VWhen thellatchS is withdrawn-r'from engagementwiththestaple driver if 35 fthe rounded-guppen surface of the 'detent-protuberance'fIbwill ride across-theedge retratar if base 2 is limited through the means of a pair of cylindrical projections or teats 65 projecting inwardly from the sides of the stanchions 'I, see Fig, 4, through 'enlarged circular openings 66 in the side walls 9 of the arm. The projections or teats 65 may be formed by indenting the metal at 61 'en the outer sides of the stanchions to force the projections 65 outwardly on the inner faces thereof. As will be noted by reference to Fig. 2, the side walls 9 of the arm 3 are out away at the top rearwardly thereof to provide a clearance for the curved legs 63 of the spring 55 whereby to provide that the lever 4 and arm 3 may be held in the relative positions shown in Fig. 2 when the driver-blade -35 is at the upper limit of its throw and the magazine-arm is raised above the base 2. The lever 4 is provided at its forward end with a hand-rest which may be constructed of sheet-metal welded or otherwise fastened thereto and formed with an overhanging marginal rounded rim overlying the sides and front of the lever.

The complete implement is operated in the manner as next explained. To fasten together sheets of paper or the like the work is laid across the top of the base 2 above the clinching means 5 and pressure applied to the hand-rest 'I0 at the forward end of the lever `4. Such pressure will cause the lever 4 and the connected arm 3 to swing downwardly as they pivot on the pin lil until the forward end of the arm bears against the Work resting on the base 2; the spring 55 yielding under this action with its legs 63 sliding rearwardly along the upper edges of the stanchions 1. As the forward end of the arm `3 contacts with the work the downward movement of the lever -4 is continued to slide the driver 35 down in the throat I5 to drive a staple s through the work and cause its legs to be clinched on the underside thereof in the grooves 6 of the clinching means I5. Pressure on the lever 4 may then be released, whereupon the spring 55 will act to raise the lever 4 to withdraw the staple-driver 35 upwardly through the throat I5 until its detent-shoulders 38 engage with the lugs 39 which project inwardly from the sides of the arm 3. Further upward movement of the staple-driver 35 in the throat I5 will thus be checked and the lever 4 will continue its upward motion to raise the arm 3 above the base 2 into the position illustrated in Fig. 2. rlhe upward rise of the arm 3 and lever `4 is limited by the engagement of the cylindrical projections or teats 65 on the stanchions I with the edges of the circular openings 66 in the sides Y of the `arm 3.

As long as a supply of staples remains in the magazine of the arm 3 the implement may be operated continuously to apply the staples to the work in the manner explained above; or if it is desired to tack labels or other articles to various objects the base 2 may be swung back out of cooperative relation with the arm 3 by causing the projections 65 to spring across the edges of the :opening 66. After thev supply of staples s in the magazine of the arm 3 has been exhausted by driving the last one in the series the machine is loaded with a fresh supply in the manner as next explained.

By pressing against the finger-grip 3| of the latch 30 the latch may be retracted rearwardly on the lever 4 to release its lug or prong 32 from the opening 34 in the staple-driver 35; the springtongue 60 yielding to release the detent-protuberance 6I from the slot 62 in the latch to permit alledrie its retraction. As the lever 4 thus is disconnected from the staple-driver 35 the arm 33 will be re-v leased to permit it to drop down onto the base 2`- and the driver 35 will slide down throughV the throat I5 in the arm. The staple-pusher I6 may' then be retracted by sliding it rearwardly in the' arm 3 to compress the spring 2D. As the staple-Y pusher I6 is withdrawn the finger of the handf may be pressed down against its top to cause its lugs 4or detent-projections 25 to engage in the opening 26 in the bottom of the arm 3 to retain it in its rearward position. A stick or refill of' staples s may be placed in the magazine of thearm 3 straddling the rod I1 and the staple-pusherA I6 thereafter released. The projections 25 on the pusher I6 will ride up across the beveled edge.- of the slot 26 to permit the pusher to be slid forward under the tension of the spring 2l) to causeit to feed the whole series of staples s forwardly and advance the foremost one into engagementy with the rearward face of the staple-driver 35.. After the magazine of the implement has been supplied with staples in the manner explained above, it is prepared for operation by swinging the lever 4 downwardly and latching it to the staple-driver 35. This may be accomplished as the arm 3 rests against the base 2 in the position illustrated in Fig. 3, the lever 4 .being pressed. downwardly to cause the spring 55 to yield untilv the lug 32 is in alinement with the opening 34- in the staple-driver 35. Then, by .sliding the latch 30 forwardly its prong 32 will engage the opening 34 in the driver 35, whereafter the: spring 55 will act to return the lever 4 intol its uppermost position as shown in Fig. 2. The upward movement of the lever 4 will cause the: staple-driver 35 to be slid upwardly in the throat'. I5 at the front of the arm 3 and when its lowerl edge is clear of the top of the shear-plate I4 the pusher I6 will be slid forwardly under the tension. of the spring 2li to feed the foremost staple s intothe throat I5. The implement may then be operated in the manner as rst explained to continu-- l ously apply staples to the work.

It is to be particularly noted that the present improved construction of the latching means forl connecting the operating lever with the stapledriver and thereby with the arm 3 insures against` premature driving of a staple, that is to say, since the staple-driver 35 remains down in the throat I5 of the arm 3 when the lever 4 is disconnected therefrom it will prevent the feeding of a staple: into position beneath the driver. Consequently. the downward movement of the lever 4 for con-- necting it with the arm 3 cannot operate to drive a staple which would be wasted or, which is more important, there is no danger that the connection. of the lever with the arm will cause a staple toJ be driven into the ngers if the latter are held. under the arm 3 while pressing the lever 4 downwardly to connect it therewith. The presentv improvement therefore provides against premature driving of a staple as a safety factor to avoidA injury to the hands and flurther makes for greater ease and convenience in loading the magazine: and preparing the implement for operation.

While the present improved device is herein. shown as embodied in a preferred form of construction, it is to be understood that various modifications may be made in the structure and. arrangement of the parts of the implement with-- out 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, an open-- loading'magazine for-containing a# uncover the mag'azine'for 'loading itl'wi'thfffas'- f zine forloading itwithfasteners.V

:top magazinefior eo'x'itaining a ,-jsiipply'fdas- 4tenersi:said" magazine vfformedv Awith a throat of'the magazine', andzinanuailyeop'erable 'meansr for-releasably connectingsa'd lever' to saidtdriver, said lmanuall'y-operable means ibeing fr'eleasable to adapt the lever to bei lifted above'the magazine to open' the latter? for *loading it With fasteners.

2. In a devicev off-the typ'elin'dicated', anff'open sided magazinefforcontaining -a-'supplyi of-"fasteners, said' magazineformedvVv with. af'tliroat driver slidaloleV in the throat. in'th/e magazine iand throat,v means for limiting Vthe'fextent l of sliding movement of the driver intl'rethroat' t'lrevent :its release from the magazine, va lever forfreciproeating theV driver, mannallyroperable'rmeans for connecting the lever totheudriver; said? means Ebeing Ymarni'allyv releasablel to adapt 'theflever to Z'oe moved independently' o'flthe driver toopen' the :magazine Vfor loading" it withifasterersand'reg silient means formaintainifng sai'd-'levef"raised :above themag'azinewith the driveilat 'the upper;

-end of its stroke.

3. In adevice ofthe; type'ind-icated, artopf-loading magazine rfor containing a fsupplylisfasteners, a lever constructed-as va over'forlthe m gazine and movableV relatively'- theretol to idr-ivthefas'i' teners thereiromfa-normally releasable'fastenerdriver reciprocable'in ath'roatatltheenclof the magazine to drive the A:fasteners theefromfmfeans for limiting the extent of movement-loi' the 'diilver in the throat to; prevent; its" 'f release rom'ffthe magazine, i and'manuallyeoperable iriean's-'f 'oon- Y nesting the operating'fleverto recip eatef the VAdriver and disconnecting it therefrom 'to-'rmit raising the leverfsnffcientlytolopentheniagazine Yfor receiving aisiiiplyfof--fastenrsg Y 4 4. In afastener-applying--implernentf a-topof fasteners, 'a levercon'strlictedasa covei'for the magazine and movable'lrelativelthereto; 2v2-'driver slidable in a throatjat-the end offthefmagazine.: formdriving' the fastenersV therefrom; fdetentmeans forlimitingthe slidingmovement of the i driver in -either direction -infthe throat in'f the latching .the 'operating'jlever jto' thendriver`-` @and thereby connecting'saidleveri -roperativefrlationship to the' magazine; saiy telling' imeans being releasalole`v to permit 'Vrais'ing the (lever to teners. 5,

5.7In a device of"thefty'pef'r-ldicated,k ani'arm constructed as a hollow open-sldedjniajgazi-h for containing ai'supplyrfof'ifasteners, alever-lofQintively verted channelshapeipivtedt s^w ng r to the magazinelarm and/forming aovei-'fori closing the open side'A of-Vsaidf--rnagazilegf aediiver reciproc'able in athroatfat'ftheeiitll o the arm,

" means to limit-the'eiitentfoifslitlingimovelnent ofthe driver in leach direction in the-'throat',fand a :manually-olfieraloleQ-latfch"for connectingrthe Vlever with the driver-ite ireibrocatelitin'the' throat toV drive thfastenersftheerom,vsaid'fl'atch being 'releasable to disconnect'thlever"fifom `the -driver to allow it to be movedtoiopenthe iin-agat S Y t 6.- jI-ri;a deviceA of the ,type indicated, an arm 'of l *channel-shape .forming a hollow magazine g for Y ycontaining,-a-Aslllpltr of staples, a' leverjof inverted channehshape pivoted to the magazinefarm to 5 adapt' it to rock'relativelytheretd a-staple-driver Y 'reciprocabletin a' throat at the' .end Yof fthe. arm, Y

"above the' vloase and formed with 'an open-:sided magazine forrontaining a supply' of4 stables, a lever' pivoted' to rock with respect'to'sai'd Varm 5 yand'the `lease andfconstructed as a" cover Yfor -closing theopen side ofthe magazine 'in the'arm; rastaple-driver slidable in a throat at fthe end of 2o' the arm, "means Vfor, limiting the extent; ofV `slid ing 'movement 'of said "staple-driver in'` 'either direction in the throat, means for releasablyeonf nectirig theY lever with the driver to 'effect reciprofcation ofthe latter, 'saidconnecting meansloe- 'ing manuallyfoperableto release the driver' from .i thelever to adapt thelatter to be nfo'ved tof open the sideo'f the magazine, `and asp'ring 'acting 'l'betvveen'thelever and thebase` for' maintaining i' said! lever raised abovethe arm with`the driver Y 'f at the'upper endof its stroke, Y ,y A-8.l2n a startling vimrfilementfthe combination of a hase, a hollow Vchanriel-shap'edl'magazinearm V-pivoted lat its' rearward 'end-'tothe Abase 'and' vDro- "vided at-lits'Y forward 'endv with a throatthrough "-which- 'the'staples may be driven,'-means"to"ad vanc'e' the'staplesin the armfto feedtheforemost "ofn into thetliroat;v a'driver reciprocalole'infthe 'throai'ltoldive the staples; a, lever constituted asA a coverforclosing theff'topofthev magazine in 40 "thefarm", means for pivoting-said lever Y'to'adapt 'i Y it' to rock withj respect to the arm,v Vmeans f for freleasably connectingfsaid lever to the driver to f 'recibrocatethelatter, 'said' connectingmeans being-A Amzarl'lially` -operable to' *release the lever ffor opening thejmaga'zine, and*` afspringiacting 'between the lever and thejlcase to normally main- Vrtainthe'lever in raisedirelation to the'arm and 1 thearm-raisedaboveth'e base,

am an implementar 'the 'timel indicated, a'

A ymagazine, a-stapledriver 'slidablein arl-,moat at Y j--theforwardend ofthe magazine andfformedwith 5 lever raised abovethe arm'and thfarm'elevatecl 5[from inedriveruk to adapt theilever to bei/raised amavis ypivoted at its rearward end to the stanchions with its sides straddling the sides of the arm to form a closure therefor, a driver-blade slidable in the throat at the end of the magazine and formed with an opening adjacent its upper end, a latch slidable on the lever to engage it with the opening in the driver, detent-means for maintaining the latch in engagement with the driver, and a spring tensioned between the lever and the base for raising the lever above the arm and elevating the arm above the base.

11. In an implement of the type indicated, a base, a channel-shaped arm pivoted at its rearward end to said base and provided with a throat at its forward end, a driver-blade slidable in said throat in the arm, means for limiting the extent of sliding movement of said driver-blade to Prevent its removal from the throat, a lever of inverted channel-shape pivoted to the base at its rearward end with its sides enclosing the arm, a latch slidable on the lever for engaging the driver-blade to connect the lever thereto and thereby to the arm, said latch formed with an opening, a spring within the sides of the lever operative to maintain the lever raised above the arm and the arm elevated above the base, said spring formed with a tongue having a detent protuberance at its end engageable in the opening in the latch to maintain the latter in engagement with the driver-blade.

12. In an implement of the type indicated, a hollow arm forming a magazine for staples, said arm having portions folded inwardly at its end and provided with a throat at the rear thereof, a driver-blade slidable in said throat, a plate fastened tothe blade on its forward side and overlying the inwardly-folded portions of the arm for slidably mounting said blade, and a lever pivoted to the arm and connected to reciprocate the driver-blade in the throat.

13. In an implement of the type indicated, a hollow arm having a bottom and sides with portions of the sides extending inwardly at rightangles at its forward end, a shear-plate in the arm spaced rearwardly from the inwardly-extending portions of its sides to provide a throat through which staples may be driven, detentlugs at the upper end of said throat, a driverblade slidable in the throat and formed with detent-shoulders at its lower end engageable with the detent-lugs in the throat to prevent the driver-blade from sliding upwardly out of the throat, a plate secured against the forward face of the driver-blade adjacent its lower end and formed with ears projecting rearwardly to adapt them to engage the lugs at the upper end of the throat to prevent said blade'from sliding down through the throat, a lever pivoted to the arm, and means for latching said lever to the driverblade for reciprocating it thereby.

14. A staple-applying device comprising a hollow open-sided magazine for containing a, supply of staples, an arm constructed as a cover for closing the open side of the magazine and adapted =for movement relatively thereto, said magazine having a throat through which the staples may be driven, a driver inserted into the throat through an end thereof for reciprocation longitudinally therein, detent-means for limiting the reciprocatory movement of the driver in the throat in the magazine to prevent its release therefrom after being assembled therewith, and manually-operable means for connecting the lever with the driver for reciprocating the latter, said connecting means being releasable to permit the lever to be moved away from the magazine to open its side while the driver is retained within the throat in the magazine.

ARTHUR H. MAYNARD.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,251,917 ,Crosby Aug. 12, 1941 2,264,322 Maynard Dec. 2, 1941 2,309,763 Goodstein Feb. 2, 1943

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