US2603781A - Stapling machine - Google Patents

Description

July 22, 1952 H. RUSKIN STAPLING MACHINE Filed April 25, 1949 sq (Ill! m 2 SHEETSSHEET l magazine.

Patented July 22, 1952 fat-03,7 1 U I fs'rAPL N'G MACHINE j ."HenryRuskim-Bayside, N. Y.:, assignor to Speed The present invention is directed to mean; or fastening in utilizing a stapling machine for driving wire staples. specifically th'e invention pertains to improvements in "a'st'apling machine permitting full accessto the staple "strip within a staple guide'channel in the nia gazine. when Products. Company; Inc., New York, N. .Y.,. a, v-ccrporation of New York I engageabl'y cooperating with the to limit ,upward displacement and .concornitantly prevent accidental-unlocking ofthe magazine.

I Othenimportant objects. and. functional. and

the coverthreo f i's fully opened 'for'quickly loading the -m'aeh'ine and for aquickly closingi the latter upon movement of the "cover over 'the Broadly the invention includes'th'e provision ofv a simplified cove'1"--'for the magazine wherein a relativelyelongated' cantileverspring is effectively seated-and anc'hor'e'd at the rear Dart'ofthe cover azid' constitutes'means atthe front part therein forsupporting the "manipulatable cap carrying 'adriving blade for expelling the'fore'moststaple oi the strip out of "the magastraddle and telescope over the upper end Softhe magaZi-nein the -matter of effecting a complete staple driving-stroke-jof the staple ejecting blade. Another object is "concerned withithe provision of forwardly overhanging and biased lips at theffront WalI- bfthe' magaZine 'to guide the lower end bf the staple driving blade into the stapleraceway oif'closing of the =magazine by" the cover. -A' further object resides inaemploying the manipulator CaLD-TOf'the stapl'edriving means as an intervener or" interconnecting means for the rear end of the driving blade and the forward .=end 0f the "cantilever spring. .Another object is concerned with-the provision the magazine to effectively guide the spaced-sides of the cover between th'e sidesof the magazine on closing of "the latterby the *cover. Another object is realizedin 'forming'i the rear part "of the cover with inwardly tur ned fianges' constituting :julcrum-means for seating the cantilever spring. Another'object comprehends in anchoring the rear end of:the-"'cantilever spring by inwardly turned lips at "the rear'part of the cover and having inwar'dly' struck lugs interlocking with alined notches interrupting the rear'endof the cantilever spring. .Another 'object resides in the provision of appropriate a detent means struck outof :the magazine :supporting saddle and disof outwardly- 'fiared lips on the spaced sidesof. I

- driving spring-blade.- v I part of thejmagazine.

structural. features will appear from the following detailed specificationtakenwith the accorn panying drawings wherein: I Fig. 1, is [:fiwPBI'SPBCtiVQ-ViEW of. :the stapling machineaccording to my invention illustrating :the-pivoted .cover closed; 1

Fig. 2 .is a longitudinal and 'vemaixsasaa' View of Fig.

* Fig.3 is anenlargedtransversesectiona view on theline 33 of Fig.2. Fig. 4 is a perspectiveview one-reduced Scale of a staple drivensuppor-ting spring.

-5Fig. 4A isia' transverse sectional viewyfonihe line 4A of Fig.. -4 I g f Fig.- 5 .isa tside elevational viewof {Fig.1

showing in full lines the pivoted covercpartly 0pened.-"..

Fig. 5A is a sectional; view on thBzliD-Q: Bi l-15A Of'Fig. 5. a 1

Fig-:6, is aplanviewof;

showing the cover fully opened.

- Fig. 7 is an enlarged fragmentary view.' of

Fig.2."

. Fig; 8 is a transverse sectional. view-onthe 1ine-8-8.of Fig; 7. 7 v Fig. 9v is. a horizontal-sectional view on .the

line 8-0 of'Fig.- "7. I i I Fig. 10 is a fraginentarv front.view-oi? .2

however with thecap removed. 1;

Fig. 11 is 5a perspective: view of "'th Q 1Stap18 Fig. 121815 vertical "sectionahview line;l2l2 ofFig. 1 w I Fig, 13 is a side elevational view. of the stapling i machine. partly: shown ;in-.section and with.t he' -magazine and driver depressed relative to the base. a '1 Fig; 14;. is an underneathview oi thefront Figs- :15. isa, sectional of Fig. 13. A Th s a h ma neee em view "onethe 1 -11815: 5-45 Z'sasiniiet is char'acterized byJthebasei-BS and thepivoted magazine M, the-pivotedqover C, thzslidably guided staple follower. or; pushen-FFR, theast aple cantilever-leaf spring CL. 1

" driver -D and the anchored sdriv'er; supporting Fixedly mounted .within. the.magaz ine is, the inverted U- shaped rail R. w, ch-slidably guidesthe staple strip "S;towarigls.the, rtical stapleguidewayG defined by thei' ront face otthe rail and the inwardly turned.

front wall of the magazine having at their upper ends outwardly biased or inclined lips L coopcrating with the lower end of the blade B of the driver D to direct the latter on closing of the pivoted cover C directly in back of the flanges Fae desired. r V

The staple follower {or pusher is'provided at its lower ends with the inwardly turned flanges H coacting with the bottom faces of the sides of the rail R to prevent upward displacementof slidable pusher FR as it is reciprocatecl back; and forth during opening and closing of the pivoted cover.

More specifically, base thereto the U-shaped bracket BT having upstanding side walls l2 appropriately carrying fulcrum pin I3 pivotally sustaining spaced ears E constituting the rear parts of side walls W of the magazine M. It will be observed that the rear part 'ofcover C is' provided with the spaced ears [4. 'pivotally sustained on fulcrum pin l3.

By this arrangement the cover may be swung to the full oped'position illustrated in Fig. 6 to assume an angle of approximately one hundred and eighty degrees with the magazine M.

BS fixedly attached extending downward from the rear part of cantilever spring broadly designated CL. The lower reach LR of spring I8 is effectively'secured to lug projecting from the slidably guided staple follower or pusher FR. Spring I8 thus has three functions, namely; one, to urge the locking pin P rearwardly; two, to shift the pusher F'automatically rearwardly when the cover is opened, and three, to urge the pusher always forwardly towards the raceway or guideway G in the closed position of the cover.

Appropriately anchored between the side walls I! of the case or cover C (Figs. 6, 7 and 9) isithe stop ST for limiting vertical displacement of blade B and provided with the rearward inclined portion 2| including the lateraly extending lugs 22 fixed in the spaced openings 23 in the aforementioned sides I! which also include lower openings24 for fixedly staking lugs 25 extending laterally from the forwardly projecting part '26 of stop ST embodying the'attenuated neck 21 integral with the head H receivable in notch or opening N defined by the biased lips L and-upper faces UF of fiangesF and adapted to be seated on the upper faces on closing of the cover. Stated in another way when head H meets the stop walls UF the magazine M is fully closed by the cover at which time the lower margins LMof'the spaced depending sides ll are just slightly above the staple strip S to prevent upward displacementof thelatter.

Driver D embodies blade B which is' of effective relatively thin steel and has the rectangular opening through which neck 21 of stop ST projects andthis neckcooperates with the upper and lower walls of opening 30to'limit upward and downward displacement of this reciprocably guided blade B integral with the upper offset portion 3| fastened by rivets 32'to the underface of the top wall '33 of the 'manipulatable cap MC.

Forfmaintaining the driving blade B'normally elevatedwhereby the lower wall of opening 30 abuts neck 21 of stop ST, the cantilever leaf ,4! in the sides l'l. leaves these forward parts the sides I! uncovered 4 spring CL heretofore referred to has its upper inclined or biased portion 35 secured tothe downwardly and rearwardly sloping intermediate depressed portion 36 ofthe manipulating cap MC by the rivets 31. r The top wall 40 of the connects thedepending ides IT has its front part removed to provide'the spaced relief recess Such construction therefore but retained in place by the stop ST. The transversely spaced relief recesses 4| therefore slope downwardly and rearwardly and are disposed belowthe elevation of the top faces 42 of the forward parts of these sides B.

' Ofinterest to observe is that the rear end of the intermediate depressed portion 35 of cap MC constitutes a tongue or tail portion formed in;

part by the reentrant notches 44. Cap MC is further characterized by the beaded margins 45 constituting strengthening means from which: depend spaced'and arcuate sides 45 straddling in the fully closed relation" of the cover, the upper margins UM of the sidewalls W of themagazine M and the latter includes'the' outwardlyflared or overhanging'wings to facilitate guiding of the spaced sidewalls "of the cover between the side walls W'on closing of the magazine; by the cover. Offset downwardly and rearwardly relative to the biased forward part --35"- of the cantilever spring CL isthe intermediateand-sloping part 48 merging with the rearwardly disposed slightly arched portion AP terminating ina rectilinear T-shaped end49 defined'by notches 50 and web or neck 5| For reinforcing purposes spring CL is provided with downwardly facing bead 53.

Referrin backto the cover C, it will be observed that the rear upper part thereof'is interrupted by the opening 54 and in alinement therewith are the spaced inwardly turned and arcuate flanges 55 whichare below the elevation of bridge or top wall 40 andbelow-the rearwardly arranged inwardly turned retaining and spaced lips 56. Flanges55 constitute fulcrum means in the form of a seat or abutment for the arcuate portion AP of leaf spring CL which is held between the side walls I! of the cover against longitudinal displacement by the lugs or detents '51jstruck out of lips 56 and disposed in notches 50 to interlock with the walls thereof. a V: 1 3

'On downward displacement of driver.D,-the

intermediate portion 48 0f thecantilever spring 7 matically elevates 'thepivotedmagazine to the position shown in Fig. 2'. I

For loading .the maga'zine the operator merely grasps and then applies alifting thrust on the cap. This action causes the-reducedeends ,l5 of the roller P to leave the bottom parts of the notches 62, in 'theside walls W of the magazine. Thereafter the roller P is'urged bodily forwardly as the reduced iends l5' strike the overhanging cams or lobes 63.1 When ends l5 clear earns 63, loop spring l8 automatically'retracts the roller. Now cover C may be swung to assume an angle cover C which interclone-hundredand eighty degrees with the magazine. I I Upward displacement ofi'thej tiltable magazine M islimited by the" detents=or jproiections l which are struck out of 'thejsides-ofthebracket BT and overhang upper facesl of the' interr'nediate reduced parts 12 of thesidew'alls- W 06i the ing stopmeans for the magazinealsopermit the 'forward'parts of the flanges l2o f the'bracket or'saddle' BT to be swung rearwardly to permit magazine. f'lfhese projections whileconstitut- I I5 'abut the icams '53, thereby bodily shifting roller P forwardly and spring'l8 is te'nsioned until the reduced ends snap by cams 6.3 after which spring l3 slightly recoils causingends l5- to be effectively interlocked under and with these cams.

By the, present invention" the manipulatable cap MC serves as aninterveneror bridge for the cantilever spring CL and for the staple driving blade 13 and by reason of theanchored.can-' tilever leaf spring, cap MC is yieldingly'maintained elevated and conveniently adapted to be displaced downwardly for appropriate action to expel a staple from the magazine into suitable material to vbe fastened either with or without the aid of the anvil.

"*The alined openings or slotsiB allow, adequate play of the reduced portions ldof the roller P and on downward displacement of the cap MC the latter also flexed theintermediate part 48 of the cantilever spring CL away fromthebridge or top wall!!! '(Fig. 13X of r t he. COVS I C, 'Ihis intermediate part 48 thus inoves downwardly relative to-the fulcrum means or seat defined by theinwardly overhangingv lugs- 55. Ultimately however, the reduced portions 15 of the roller P strike the bottom walls of the alined slots l6, thereby pivoting the spaced sides I! of the cover downwardly to permit the front parts of the lower margins LM (Fig. 2) 0f the sides to bear against the staple strip at a time when blade B is about to expel the foremost staple out of the raceway, thus precluding buckling of'thisstrip during the staple ejection operation of the driver, namely, in a direction away from the driver blade. braked against rearward displacement and upon removel of hand pressure from cap MC, the latter is automatically elevated until the intermediate part 48 of spring CL strikes the top wall or stop of the cover C, the stop being disposed between the alined relief recessses 4| at the front part of the spaced sides i1 and the gap or opening 54 at the rear part of the cover C.

Rail R. is appropriately anchored within the magazine and in spaced relation to the front and side walls thereof and is further operatively retained in place, that is, spaced from the front and side walls of the magazine by the biased lug 80 struck out of the bottom wall of the maga- Consequently the staple strip is cover to said magazine. V

to thg front face's'of thes'paced sides: n of the cover, that -is, prevents outward spreading "Various" changes may be made in details of construction and arrangement of- -parts without departing from the spirit of the invention-or saccrificing any of the advantages thereof' inner-J enttherein. I I

Iclaim: I i 1. In a staplingmachine'a' magazine for supportinga strip of staples'and including a raceway, a cover having spaced sides, a cap, a blade secured to said cap and slidably' guided in said raceway, means extending fromfand inwardly overhanging said sides and constituting jfulcrum means, acantilev'er spring embodying anintermediate portion mounted on said fulcrum means and having a front portion secured to said cap, means at the rear of saidfcover for'anchor'ing said I spring. against displacement longitudinally ofsald cover, and-means movably holding said 2.71m a stapling machine, a I porting. a strip of staples and including a race- .way a cover having, spacedsides a caphaving a rear reducedportiom-a staple fdriving' blade slidablywguid'ed in. saidraceway-and ,in'cluding an offset..portionsecured toIsaidIcaip, means in- I wardly overhanging said? sides and, constituting fulcrum means, a can-tilevernspringembodying ail-intermediate portion bearingagainst said rulcruni. means and'havingla front upwardly and iorwardlysloping portion securedto said. cap, means. atthe: rear of said cover for. anchoring :said spring against displacement longitudinally of said cover, and meansmovably holding said cover to'said-magazine. 1

3. In. a stapling machine; a, magazinefor supportinga strip of ,staples; and including a raceway-,a'cover having spaced sides,.a cap, a blade slidably guided-in said racewayand havingv an zine and having its offset terminal 8| welded to offsets portion-secured 'tosaid eap means intogral with andfriearthe rear-of said cover and interposed between said. sides and constituting I fulcrum means, a cantilever spring disposed in *partwithin and longitudinally of said cover and embodying an intermediate portion mounted on said fulcrum means and havin a front upwardly and forwardly sloping portion secured to said cap, means at the rear of said cover for anchoring said spring against displacement longitudinally of said cover, and means movably holding said cover to said magazine. I

4. In a stapling machine, a magazine for supporting a strip of staples and including a race way, a cover having spaced sides, a cap, a blade slidably guided in said raceway and having an offset portion secured to said cap, spaced flanges integral with and interposed :between said sides and constituting fulcrum means, a cantilever of said cover and embodying an intermediate portion mounted on said fulcrum means and having a front upwardly and forwardly sloping portion secured to said cap, means at the rear of said cover for anchoring said spring against displacement longitudinally of said cover, and means movably holding said cover to said magazine.

, 5. In a stapling machine, a magazine for supporting a strip of staples and including a raceway, a coverhaving spaced sides, a cap, a blade slidably guided in said raceway and having an offset portion secured to said cap, means near the rear of said sides and interposed therebetween magazine for sup and "constituting. fulcrum means, a cantilever spring disposedin part within and longitudinally secured to said cap, lips turned inwardly of said sides at the rear of said cover and'including means for anchoring said spring against displacement longitudinally of-said cover, and means movably holding said cover to said magazine.

6. In a staplingmachine, a magazine for supporting a strip of staplesand including a raceway, a cover having spaced sides, a cap, a blade slidably guided. in said raceway and having an offset portion secured to said cap, flanges inwardly overhangingsaid sides, a cantilever spring disposed in part within andlongitudinally of said cover and embodying an intermediate portion mounted on'said flanges and having a front upwardly andforwardly sloping portion secured to said cap and a downwardly extending rear portion including notch means, lips turned inwardly of said sides at the rear part of:said cover and including means extending into said notch means for anchoring said spring against displacement longitudinally of said cover, and means movably holding said cover to said magazine.

7. In a staplingmachine, a magazine for supporting a stripof staples and including a raceway, a 'cover having spaced sides and providedv with an intermediately disposed top wall and having recess meansand an opening at the opposite ends of said wall, a cap movablerelative to said recess means, a blade slidably guided in said race- V way and having a vertical slot and having an offset portion secured tosaid cap, flanges integral with and interposed between said sides and below said wall, a cantilever spring disposed in part within and longitudinally of said cover and embodying an intermediate portion mounted on said flanges and having a front upwardly and forwardly sloping portion secured to said cap,

means at the rear of saidcover for anchoring said spring againstdisplacement longitudinally of said cover, stop means secured between said sides and having a neck portion extending into porting a strip of staples, and including a race- .way, a-cover having spaced sides and, providedv with an intermediatelyzdisposed wall and having recess means and an opening at the opposite ends of said wall, a cap movable relative tosaidrecess means, a blade slidably guided in said raceway and having an offset portion secured to said cap, flanges near the rear of and interposed between said sides below saidwall, a cantilever spring disposed in part within and longitudinally of said cover and embodying an v intermediate portion mounted on said flanges and having a front upwardly and forwardly sloping portion secured to said cap, means at the. rear of said cover for anchoring said spring against displacement longitudinally of said cover, a base, a saddle secured to said base, means pivotally sustaining said magazine andcover on said saddle, and detent means struck out of said saddle and coopcrating with a wall of said magazine to limit and prevent displacement of the'latteir in a direction away from said base; 7

9. The stapling machine according to claim 2 wherein said sides are held staked by stop means intervening said sides also cooperating'with said blade to hold the latteradjacent thereto, and

said stop havingmeans for guiding and limiting sliding movement of said blade.

V HENRY RUsKiN. REFERENCES CIV'IEDII I The following references are of record in the.

file of this patent:: I

UNITED STATES PATENTS

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