US2682053A - Plier type fastener driving device - Google Patents

Description

June 29, 1954 H. RUSKIN ET AL 2,682,053

PLIER TYPE FASTENER DRIVING DEVICE Filed Aug. 25 1951 3 Sheets-Sheet l rlllrlla 1 I. I: #22 J7 J2 4 2 ATTO R N EY June 29, 1954 H. RUSKIN ET AL PLIER TYPE FASTENER DRIVING DEVICE 3 Sheets-Sheet 2 Filed Aug. 25

HEN/FY RUSK/N BY 1545/4 ZACH/IRK/W ATTORNEY Q E E E E E i E E RE! i .w.ill m%.if iui w. Z E. a3

ii i i ME K N QR v Q m\ EMHQQQ Wmw M E E June 29, 1954 H. RUSKIN ETAL PLIER TYPE FASTENER DRIVING DEVICE 3 Sheets-Sheet 5 Filed Aug. 25, 1951 Patented June 29, 1954 PLIER TYPE FASTENER DRIVING DEVICE Henry Ruskin, Bayside, and Basil Zacharkiw, Jamaica, N. Y., assignors to Speed Products Company, Inc., Long Island City, N. Y., a corporation of New York Application August 23, 1951, Serial No. 243,242

13 Claims.

This invention is direr ted to an improved plier wherein a swingable cover is normally held removably interlocked with a companion staple receiving open top magazine and wherein full access may be had to the staple receiving channel of the open top magazine upon swinging the cover rearwardly away from the staple guideway communicating with and at the front part of the channel and wherein the cover and magazine as well as the anvil carrying base utilize common fulcrum means traversing the rear ends thereof to permit tiltable or hinged displacement of the magazine relative to the base and swingable movement of the cover to either fully open or close the magazine. One object of the invention is realized in interposing the hingedly associated cover, magazine and base, between a staple ejecting plunger in the form of a hollow cap and a spring controlled rocka'ble handle normall unlocked from the plunger arm to permit the latter to swing rearwardly and bodily carry therewith the cover to fully open the magazine to ren der the staple channel completely accessible. Another important object resides in the provision of spaced wings on the manipulatable handle, normally unlocked from spaced posts carried by the plunger arm but instantly effective to interlock therewith upon rocking of the handle towards the base for initially shifting the latter against the vertical staple ejecting guideway of the magazine and subsequently but on the same actuating stroke of the handle shifting the plunger arm downwardly relative to the magazine and base for expelling the foremost staple of the staple strip in the magazine out of the latter and against the anvil for securing suitable sheets of material previously positioned on the anvil. Other important functional and structural featues of the invention will apear from the following detailed specification taken with the accompanying drawings wherein:

Fig. 1 is a side view of the plier according to my invention illustrating the manipulatable or rockable handle unlocked from the staple plunger arm to permit the latter to be grasped, swung rearwardly, and carry with it the cover for the magazine to provide full access to the staple channel of the latter.

Fig. 2 is a side view of Fig. 1, shown partly broken away and in section, and further illustrating the plunger arm together with the cover swung rearwardly to fully open the magazine.

Fig. 2A is a plan view of the opened plier taken on the line 2A2A of Fig. 2.

Fig. 2B is an enlarged side View taken on the line 2B-2B of Fig. 2A.

Fig. 3 is a view similar to Fig. 1 but showing the manipulatable handle rocked to interlock with the plunger arm prior to depressing the latter.

Fig. 4 is a View similar to Fig. 3 however showing the pivoted base lifted against the magazine after the handle has been further actuated.

Fig. 5 is a view along the lines of Fig. 4 but exhibiting the plunger arm depressed relative to the cover, magazine and base at the completion of the actuating stroke by the operator on the tiltable or rockable handle.

Fig. 6 is a transverse sectional view on the line 65 of Fig. 2.

Figs. 7, 8, '9 and 10 are transverse sectional views of Fig. 1 taken on the lines ll, 28, -B, and l lll 0 respectively.

Fig. 11 is a perspective view of the plier.

Fig. 12 is a rear perspective View of Fig. 11, illustrating the plunger arm broken away.

Fig. 13 is a fragmentary plan view of Fig. 12, showing the cantilever leaf spring anchored to the rear end of the cover.

Fig. 14 is an elevational View taken on the line M-Hi of Fig.5.

Fig. 15 is an enlarged sectional view on the line |5l5 of Fig. 5.

Fig. 16 is a perspective View of the ribbed cantilever leaf spring which normally holds the plunger arm elevated.

Fig. 17 is a sectional view on the line l'l|l of Fig. 16.

Fig. 18 is a sectional view on the line l8-l8 of Fig. 3.

Fig. 19 is a fragmentary perspective view of the plier, specifically illustrating one of the shiftable fulcrum pins of the rockabl-e handle at the lowest part of its relief slot of an associated side wall of the swingable base in the normal fully diverged relation of the handle and depressible plunger arm, and

Fig. 20 is a sectional view on the line zit-20 of Fig. 2.

In the drawings, the plier is generally designated P, and comprises, the open top staple receiving magazine M, the cover C, plunger arm PG, base B, and the loosely mounted rockable handle H.

Magazine or staple receiving arm M appropriately carries the fixed rail R (Fig. 2A) on which the staple strip S is slidably guided towards the staple guideway l0 (Fig. 2). A slida'bly guided follower F is mounted on the rail to shift the staple strip S towards the guideway [0.

Cover C embodies spaced sides ll (Figs. 2A and 12) having at its rear ends spaced ears l2 piv- 3 otally retained on fulcrum pin F. Ears I3 of spaced sides It of magazine M are also pivotally mounted on fulcrum pin F and movably and closel straddle spaced ears I2 of cover C.

Upstanding sides it at the rear part of the base B straddle ears iii of the magazine and are also pivotally mounted on fulcrum pin F.

Rear portions l6 of spaced sides ll of the depressible plunger arm PG are likewise pivotally' mounted on fulcrum pin F and. swingably but closely straddle the upstanding sides lof base B.

Disposed transversely of cover C is a shiftable pin 3!! having reduced portions 2| (Figs. 2A and 2B), loosely positioned in the spaced enlarged openings 22 in the spaced sides I l of the cover.

Trained over and looped about pin is'the helicoidal spring LS having the end of its lower leg 23 appropriately retained by lug 24 0f thev slidably retained follower FW while the end upper leg 25 is suitably anchored to a projection 26 extending downwardly from the rear end of the cantilever spring L hereafter more particularly described.

By the arrangement disclosed the slidably retained follower FW moves rearwardly when the cover is swung rearwardly (Figs. 2 and 2A), thusfully exposing the inside guide channel SC defined by the walls of magazine M and rail R, permitting convenient insertion of an entire staple strip S through the open top of the magazine and into the staple guide channel. This channel SC of course communicates with the front staple guideway Iii as is well understood.

Plunger arm PG is a one piece sheet metal cap embodying top wall (SB-from which depends the front wall 3i merged with depending sides I! having their rear inwardly offset portions l6 pivoted on fulcrum pin F.

Anchored by spaced rivets 33 (Fig. 1 to the inside surface of top wall 301s the branch 34 which is substantially normal to. and integral with the staple driving blade 35 provided with the vertical slot 36, the spaced vertical sides of which are guided by the reduced portion 3'! of the T-shaped lug 38 projecting from the bent spacer 39 (Fig. 2B) efiectively interposed between and anchored to the spaced sides ii of the swin able cover C, sides i i being normally spacedfrom the top wall'EG of plunger arm PG (Figs. 1, 2 and 3) to allow pivotal displacement of the plunger arm relative to the cover and magazine when both of the latter are locked in a manner hereinafter more particularly pointed out.

Leaf. springL has its front free end id-sloping upwardly and forwardly to cooperate with the underface of top wall 3% ofthe plunger arm PG (Fig. 12) to normally hold the latter raised and the staple driving blade 35 above the staple guideway ill receiving the foremost staple of. a staple strip S.

The intermediate portion 41 (Fig. 2) of spring L abuts top Wall 42 of cover C and part of this spring to the rear of the interconnecting top wall or stop 52 is arched over and seated against the inwardly overhanging-flanges :33 extending. from the spaced sides ll of the cover which also embodies at the rear end thereof the inwardly turned flanges 44 including detents 45 projecting into andinterlockingwith notch-es 46 interrupting the rear end portionof spring L to hold the latter in place against longitudinal displacement. For stiffening purposes,- spring L is provided with rib 48 along its central portion.

Interrupting the forward parts '50 of the spaced sides M oi'themagazine' orstaple containing M are the alined notches 5| having posterior u per parts provided with overhanging cams 52 which act on closing of the cover to shift projections 2| of the floating or loose pin 26 forwardly against the resistance of the looped spring LS. However on completion of the closing action, projections 2! are at the bottom of notches 5| but under cams 52 due to the recoil of spring LS, thereby holding the cover and magazine interlocked and of course closed at which time sides IQ of the magazine closely straddle sides H of the cover and the T-shaped lug 38 (Fig. 18) is seated against the lower stop wall 53 (Figs. 2 and 14) of dovetail'shapedrecess 54 interrupting the spaced inwardly turned flanges 55 constituting the front wall of the magazine. Inclined lips 56 (Figs, 2 and 18) cam blade 35 into staple guideway I0 when the plunger arm is depressed relative to the cover and magazine.

Spaced upstanding wings W of the rockable or pivoted handle I-I closely but movably straddle the upstanding spaced sides iii of base B (Fig. 9) and depending sides ll of the plunge arm or cap PG closely but movably straddle the spaced wings W but widel straddle the spaced sides I l of cover C.

Spaced sides 15 of base B are provided with transversely alined relief slots 66. Cylindrical posts GI are anchored to and inwardly overhang the spaced wings W of the handle H. Postsiil ride in relief slots iii) to-constitute a loose connection.

A compressible helicoidal spring 62 (Fig. 1) is housed within hollow handle H and has its ends 63 and 8 3 retained by appropriate hooks and 63 extending from the lower Wall 61 of base B and lower wall 68 of the handle respectively. Spring 62 in the most widely diverged relation of the handle and-base is expanded, thus holding anterior lip 7i] against base B at which time it is important to observe that the spaced wings W (Fig. 1) are'iree and clear of the transversely alined and spaced-pins or posts ll of the plunger arm PG. More specifically these posts are appropriately anchored to the inside faces of the spaced depending sides H of the plunger arm.

Spaced and upstanding wings W of the rotatable or roclrahle handle H are provided with alined and reentrant notches 12 adapted to receive and interlock with the spaced and fixed pins or posts "ii of the plunger arm to pivotally depress the latter at a time when the cams or nose portionslii are bearing down and driving postsll. Normally, however, helicoidal spring E32 acts to maintain wings W of handle H unlocked from pins H of the plunger arm, and' the handle is widely separated fromthe plunger arm (Fig. 1). Sides ll of the plunger arm may be manually grasped and swung: rearwardly (Fig. 2A). Consequently, cover C. is also swung rearwardly since it is bodily carried by the plunger arm. It follows thatiull accessmay now be had to the staple receiving channelSC of the mag.- azineto permit dropping into andload the latter with a. staple strip- S. Thereafter the plunger arm is swung towards'the'magazine and sides H of the cover becomenested between sides' M of the magazine and eventuallyprojectiona 2| of: the shiftable pin 20 strike: thev spacedcams 52-to bemoved forwardly and on completion of theclosing' action; projections 21- due tothe re lease of spring LS fall under to-interlock with these cams. The cover is now locked againstam cidental opening; However towards the completion of the closing action" of thecover, spaced posts ll of the plunger arm clear cams '13 and are disposed contiguous to the lower faces M of the alined notches 12 at which time lip 10 of handle H due to the action of spring 62 bears against base B, thus the latter serves as a stop to limit divergence of the handle away from the base.

Briefly recapitulating, normally spring 62 pivotally retracts handle H until lip It! strikes base B at which time as previously stated the spaced cams or noses 13 are free of, that is, unlocked from the driven and spaced posts H of the plunger arm (Fig. 1). Also the shiftable and spaced pins 6| carried by wings W of the handle are now at the lowest parts of the alined relief slots til in the spaced side walls l of the base. Spring 52 also automatically retracts the pivoted base to provide maximum divergence between anvil A and the magazine. This relationship is also shown in Fig. 1 wherein the plunger arm is unlocked from the pivoted handle H although the reduced portions 2| of pin 20 of cover C are interlocked with spaced sides 50 of the magazine M. Now by grasping sides I! of the plunger arm and lifting upwardly, both the plunger arm and cover C can be bodily swung rearwardly relative to the magazine M (Fig. 2A) for loading the latter with a strip of staples or to remove a clogged staple. Subsequently plunger arm PG and cover C are swung towards the magazine or staple containing arm M. Projections 2i strike cams 52 to tension loop spring LS and on complete closing of the cover these projections are held under these cams due to the recoil of spring LS.

Manual pressure on the handle in a direction towards base B causes the handle to pivot or rock and instantly pins 6! ride upwardly in the alined relief slots 60 of the base to be against the upper ends of these slots which constitute fulcrum means for these pins. By such action wings W of the handle have shifted from their positions shown in Fig. 1 to their positions illustrated in Fig. 3, namely, with the alined slots 72 thereof receiving the spaced posts H of the plunger. Further actuation of the handle in this same direction causes base B to be pivotally shifted towards the magazine to position the anvil A thereof against the magazine M (see Fig. 4). It should be realized that up to this time plunger arm PG has been idle, that is, it has not been pivoted downwardly relative to the magazine, cover and base but such action takes place only after the anvil has reached the magazine. This is accomplished on the completion of the operating stroke on the part of the operator and almost instantly as the spaced cams or lips '13 of wings W drive the spaced posts H downwardly, thereby causing the plunger arm to likewise pivot downwardly but only after the anvil contacts the base (Fig. 5). It is therefore apparent that the driving blade 35 meets the foremost staple of the strip and drives this staple against the anvil to clinch suitable material (not shown) previously mounted on the base. Hence the operating stroke of the pivoted handle has two important phases. In the first phase, the base is moved automatically to place the anvil against the magazine. In the second phase, the plunger arm is subsequently and automatically actuated relative to both base B and the pivoted intervening arm constituted by magazine M and its companion cover C. This operation, that is, these successive stages take place almost instantly when the operator manually squeezes the 6. pivoted handle towards the base and at the same time grasping the depressible plunger arm. Upon release of manual pressure on the handle and plunger arm, helicoidal spring 52 and leaf spring L release their energy. Therefore spring 52 r tracts the handle H and base B while the biased portion 40 of spring L causes the plunger arm to be automatically elevated. The plier is now fully open and again the spaced pins 6! are at the lowest parts of the relief slots Gil in the spaced sides [5 of the base.

Inwardly overhanging spaced detents 30 (Figs. 1, 2, 12 and 19) are struck out of the upstanding spaced sides 55 of base B and cooperate with the lower walls of alined recesses 8| interrupting sides is of the magazine to prevent accidental upward pivotal displacement of the magazine out of the base but this may be accomplished by deliberately forcing the magazine M by these detents.

Various changes may be made in details of construction and arrangement of parts without departing from the spirit of the invention or sacrificing any of the advantages thereof inherent therein.

We claim:

1. In a plier, a manipulatable handle embodying at its forward end a lip and having upstanding and spaced wings including upper portions provided with aligned cam means and aligned notches disposed below said cam means, an anvil, a base carrying said anvil and interposed between said wings and seated on said lip, said base having upwardly extending spaced sides including aligned relief slots, pins anchored to said wings and movably arranged in said slots, a staple receiving magazine interposed between said upwardly extending sides, a depressible plunger arm carrying a blade for expelling a staple out of said magazine and having depending sides removably straddling said wings and upstanding sides, aligned and spaced posts carried by said depending sides and normally out of said notches and free of said cam means when said depending sides straddle said wings in the superimposed and closed relation of said plunger arm over said magazine, a cover bodily carried by said plunger arm and removably receivable within said magazine, a staple driving blade carried by said plunger arm, means removably locking said cover and magazine; means common to said base, magazine, cover, and plunger arm and traversing the rear ends thereof for pivotally retaining said cover, magazine and plunger arm relative to said base, and spring means interposed between said handle and base to hold the latter normally retracted and against said lip and concomitantly arrange said cam means out of the path of movement of said posts to permit bodily pivotal displacement of said plunger arm and cover away from said magazine.

2. The plier according to claim 1 wherein said spring means normally urges said handle away from said base and against said lip at which time said pins are disposed at the lower parts of said slots.

3. The plier according to claim 2 wherein upon manipulation of said handle in a direction towards said base, said pins are moved to the upper ends of said slots concomitantly interlocking the sides of said notches with said posts preparatory to shifting said base towards said magazine and said anvil against said magazine.

4. The plier according to claim 3 in that said posts after interlocking with the walls of said notches pivotally depress said plunger arm to wards said cover, magazine and base and upon further manipulation'of said handle towards said: base butonly after engagement of said anvil with said magazineshifting said blade downwardly in said magazine to. expel the foremost staple: in the latter.

The plier. according to claim 1 further char.- acterized in that said pins. and slots constitute loose connections between said base and handle.

6. The plier according to claim-'1 characterized: further that stop means is provided on. the upstanding sides of the base to cooperate with the sides of the magazine to prevent accidental removal of the magazine out of the base.

7. In a plier, a. base, a plunger arm, a staple containing arm interposed between said plunger armand base, means pivotally. connecting the rear'ends of said base, plunger arm and staple containing arm; a handle having loose connections with saidbase, posts carried by said plunger arm, cam means on said handle and spring. means interposed between said handle and base to normally hold said cam means out of. path of movement of said posts in the closed position of said plunger arm over said magazine andifor holding said base diverged from said staple containing arm and against said handle;

8'. The plierv according to claim '7 wherein on each manipulating. stroke of said handle towards said base the latter tilts towards and against said staple containing arm and thereafter said plunger arm tilts downwardly towards said staple containing arm and base for expelling the foremoststaple' in said staple containing arm.

9. The plier according claim '7 wherein the handle closely straddles'the'base,.widely straddles said. staple containing arm, and the plunger arm widely straddles the staple containing arm and closely straddles the handle.

10. In a plier, a base, a plunger arm having a staple driving blade, a staple containing arm removably guiding said blade and interposed betweensaid-plunger arm and base, a cover bodily carried by and within said plunger arm for closing or opening said staple containing arm, means pivotally holding the rear ends of said base, staple containing arm, cover and plunger arm; a U- shaped' handle having upstanding and spac d wings embodying loose connections with said base, spaced posts carried by said plunger arm, said upstanding and spaced wings having cam means and notches below said-cam means, andihelicoldalspring; means interposedbetweensaid handle and base to normally hold said base diverged from said staple containing arm and against said handle concomitantly positioning said notches substantially clear of said posts and said cam-means out of path of movement of said posts prior to, swinging said plunger arm from its closed position over said magazine to anopen position rearwardly away from said magazine.

11. In a plier, abase having upstanding and. transversely spaced sides including, aligned relief: slots,.aplungerarm having a stapledriving blade, a staple containing arm removably' guiding, said blade and interposed between said plunger arm andbase and straddled by said sides, a cover bodily'carried by and within said plunger armfor. closing. or opening said staple containing arm, means pivotally holding the rear ends of said base, staple containing arm, cover and plunger arm;v a U-shaped, handle having upstanding and spaced wings straddling said base and staple containing arm, spaced pins carried by said wings. andmovably guided by the walls of said slots, spacedposts carriedby said lunger arm, said upstanding and spaced Wings having cam means and notches below said cam means, and helicoidal spring means interposed between said handle andbase to-normally hold said base-diverged from said staple containing arm and against said handle concomitantly positioning said notches substantially clear of said posts and said cam. means out of path of movement of said posts on swingingv said plunger'arrn from its closed'position over said magazine to an open position rearwardly away from said magazine.

12. The plier according to claim 11 wherein the staple containing arm has a fully open channel for reception of a complete staple strip upon dropping thereof downwardly through the open top' of said arm after swinging the plunger arm rearwardly and away from said wings.

13; The plier according to claim 12- characterized further in that the plunger arm widely telescopes over the staple containing arm and closely but removably straddles said wings.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,165,572 Pankonin July 11, 1939 2,354,760 Lindstrom Aug. 1, 1944

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