USRE14507E - hutchison - Google Patents

Description

M. R. HUTCHISON. sAPLiNG.DEv|cE.` I APPLICATION FILED "51.14.1918.

Reissu'ed Aug. 20, 1918.` 14,507

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y I his @Manns g2/77g; K) v M. R. HUTCHISON. STAPLING DEVICE.

APPLICATION FILED FEB.I4. |918. Reissued Aug. 20, 1918. 14,507

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A FG W SWWMM g his aucun? j M. R. HUTCHISON.

SAPLING DEVICE.

APPLICATION msu rfa. I4. ma.

Romea Aug; 20, 191s. 14,5507.

SHEETS-suur al..y

Reissud Aug. 20, 191s.

*Flew MQ@ Monfamwm nl Humfr WIB! ORANGE, NEW JERSEY.

STLPLING PEVICE.

spuma et hinged Len-.en Patent. Ressiied Aug. 20, 1918.

annum lo. 1,1,140, mea Jury n, 1911. mi lo.

50,058., led August 84, 1908A. Believed Kirch 86,.

1.17, lah! le. 157,500. Application for rellene Med February 14, 1910. Serial lo. 217,85.

To dl'wL'omit-may concern:

Be it known that i, Munari Rasse HUrcmsom/a citizen of the United States,

and a resident` of West Oralbizge, in the county of Essex and State of ew Jersey, have invented certain newv and useful Improvements in Staplin Devices, of which the following is a speel cation. v

presentinvention relates to machinesl of t e type in which the staple is formed, driven, -andv clinched in one operation, the various instrnme'talities necessary for the purpose being preferably combined in a compact unitary device operated by an externally projecting lever.

The staple is of the type comprisin a bod portion adapted to engage one sur acc of t e article to'be stapled, a second portion `extending'f tlfrrough the article, and a third ion b'e'nn opposition to said first-mentionedfportion, preferably so as to eil'ect a clinched, approach eachother at a rentrant f clamping actioniupon the material and prefstably 'so that the free end is bent toward the material thereby clamping such material-llibre tightly at the free end of the staple than at thsibent rton thereof. Prefertha-5ale has the form of an inverted ee ends to be clinched against. the back side of the material being prefembly of! an aggregate length not eater than theJ'ength of the straight bo y port'ion which engages the front side of the material. i

vOne Vobject of the invention has been to produce e bending and -clinching mechanism whereby the free ends ofthe staple, when angle, so that 'the clamping action is. greater at said free ends than at the bends.

Another object of my invention is to drive the staple through the material and lnogressively deflect and bend the free ends ofthe staple as thev emerge at the back side of the material.

' Another object of my invention is to provide a guide for the legs of the-staple extending as nearly as possi-ble down to the surface-ol the material into which the staple is driven.

Another obiect of rnv invention is toprovide 'a groove in the driving member for engaging the portion/of the sta le to ticularly, while being forcedto final clinching position.

Another obiect'of mv invention is'to arrange the deectine grooves in the clinch- `ingr anvil parallel with said groove in the the staple forming position into coperative relation with the staple driving mechanism.

)ect of my invention is to con'iassist in maintaining alinement thereo parv Preferably said staple form-ing member is provided with lparallel ves en agin the legs ofthe staple w en formed, am

these grooves, containing the staple, are

transferred to the driving mechanism and form the staple guides of the driving mechansrn durin the driving operation-. .V Another ject of mv invention is to provide a parallelsidcd anvil formed with an open ended slot and, coperating therewith, `t bifnrcnted bendino member provided with opposite grooves adapted to engage,` bend and hold the sta le when moved transversely of the open-en ed slot Ain the anvil and to carry said staple out of the open-ended slot free of the anvil and in to the above described guiding relation to the driving mechi vanism.

Another objectl of my invention lias been to provide a reel for holding and supplying wire and automatic mechanism-for feeding the wire to the's ool formingr mechanism;l

A more speci c object of my invention has been to .combine the above instrumentalities with a single unitary ,actuating means, which is moved in one direction,

preferablv less-than a semicir'cumfemnce, tn

mpl'ete the operat'ons of--said moeheid-IAS and which' restoressaid mechanisms to ition by a simple-reversenuove-5.190 I said actnatingfmeans. The actuar-j ing-means is preferably a'shaft proviclid initial ment filrv 'tionarvposition ,at other times.

` with projections relatively arranged circumfercntially and radially so as to actuate said mechanisms successively at the desired timesand to hold them in the desiredst-- Having thus described some of the i'mportant features and obf'ets'jof myinvenf tion, I will proceed to Vdesirable embodiment of my invention,

` tions yshowing the movin parts inthe sucine c evice shown in Fig. 10;? and i l cessive positlons to whic they are moved in forming and applying the staple.

Fi s. 8 and '9` are detail views of the clinc 'ng anvil. i

F ig.A 10 is a pers ctive View ofthe reel and feed fork supp ying the wire or other material used for the staples. i

F 11, 12 and 13 are details of theffeed- 14 is a side elevation of the device with the successive positions of the actuatinglever diagrammaticall vindicated.

he case comprisesa asek.1,. sides 2, 3

2 and front 4. `The top: and rear of the case are closed lin by the over indicated at 5, Fig. 2; y lVithin this case' are contained the `wire' holding and feedin mechanism, staple forming mechanism, an Y the staple drivin `and clinclnngl mechanism, all cordlnat and arranged to perfornfl their various functions at they proper times. The various mechanisms arey actuated b suitable power applying means, such as t e hand lever 6, secured toy cam sleeve journaled on shaft 7, mountedin bearings 8, 9 and provided y with cams 10, 11 and 12. As shown, the cam 12 is formed vintegrally with-the lever 6, as

also thcuthrnst surface 13.

These various operating surfaces 10, 111,'

and 13 have suitabl A ential extent and radia pro]ect1on, so that varied circumfereach operates its proper portion of the mechanism yin its own proper time. 4

In the form shown in the drawings, the

3'. staple driving and clinching mechanism is combined with a staple-forming and feeding mechanism, and this, in turn, is provided with a blankI supplyingy or feeding mechanism. Thestaple forming, driving,

` and clinching members comprise a clinching anvil 14, driver 15, staple forming anvil 16, and stapleformer 17. lThe staple former 17 escribe in detail a relative arrangement.

cuts off and bends `the wire or other blank to form-the staple and simultaneously engages andi grips the legs of the staple. It then 'moves `forward into c erative relation with the driver 15 and c inching anvil 14, serving as a guide for the legs -of the stapledurin the `driving' operation. The parts are a apted for such combined operation by their peculiar construction and y The staple formin anvil 16` consists'of a arallel sided bloc having an open ended' s ot 18, the bottom of the slot serving as the forming surfacefor the central body `portion of the staple and the parallel sides serving as the anvil surfaces for formatiomo the legs of the staple.

The forward edge of the anvil 16, into which the slot 18 opens, is rovidedwith a guide-way 19 for the staple driver 15,.,so' that whenftheystaple is moved out of the slot 1S, it passes directly' under the driver.

The staple forming and transferring mem-4 ber whiclrcoperates with the' staple forming anvil, consists essentially of parallel sur faces 20, 20, adapted to move transversely ofthe slot 18, to bend the legs of the staple,`

and thenlongitudinally of said slot to bring the staple under the driver. The surfaces 20, 2O are provided each with a' groove 21 extending in a direct-ion transverse to the direction of the open ended slot 18`of the sta le forming anvil 16. The open, lower en of the groove 21 correspondsy accurately with the location of the blank when fed laterallyl across the anvil through the passage QQshown in dotted lines Fig. 1., Said passage is preferably formed in a bushing' 23,

formed of hardened'steel and inset or screw` threaded in the support 24.y The forward face of this bushing is ground off flat and the rear face of theA former 17 coperates with the passa in the bushingto form a shear to' vcut o the blank. l

The forming' members 17z 17, are preferably maintained vin arallehsm by forming them as substantial y rigid projections or bifurcations of a solid body or block 25. This block is mounted to ermit downward 17, by any suitable means, as, for instance,

lby a slot 26 in therearand engaging a pivot 2.7, mounted incbearingsQS, 29. A power-k ful springe, anchored lat 31, fulcrumed` at 32, and aring upon the block 25 at 33, serves to maintain 25 normally inthe upward position. In order tov insure itive timing of the downward and forwar move,- ments of 25, the surface 341er engagement with" cam 12 and the correlative` cam surfaces 35, 36 for en agement with cam 11, are all made integra with said block 25.

' The'staple `driver 15 is normally held in retracted positiony by meansl of spring.` 37.'

The driver face kthereof is provided with a` transverse groove 38l for engagement [with 'sage 22 and across the the head of the staple to assist in maintaining the latter in a vertical plane during the driving operation. The clmching anvil is rovided with a corresponding groove 39 in the same plane. This groove 39 is deepest at the ends. as shown in Fig. 8, where the legs of the sta )le first engage the clinching anvil when the driver 15. From the ends. it curves progressively, so that it is shallower toward the center, thereby operating to guide the legs of the staple from their initial vertical direction, laterally, toward each other, and

finally upward so that they approach each other at a rentrant angle. thereb forming a smooth `bend for the staple, whic 1 does notI weaken the material at the bend, but does force the free ends of the staple inward, so that when finally positioned, the staple` clamps the material more tightly at the center than at the bends. This is especially important because the free ends are thus bent toward the material and are thus less likely to catch other papers or objects when in use.

The blanks may be 'fed through the pasanvil 16, bv any desired feed mechanism, but I pre er to use automatically acting mechanism,v such as is shown in the drawing, wherein a quantity of wire 40, is stored on a spool or reel 41, mounted on a pivot securedv to the base 1.

.The reel is held in position and prevented from over-running by a friction spring 42 bearing on the top of the spool and held in spring 42 is itself held from rotation by arranging the free end thereof to project into engagement with the side of the ease 2, as at 44.V A wire or other blank 40, passes from the reelthrough the curved guide i5, secured to tht.` wall of the case 2, preferably by brazing. Thencc. the wire passes through a straightening device and an automatic gripping andlfeeding mechanism. The wire straightening device consists of a convex surface on block 46 and a roncaved surface on block 47. adapted to bend the wire beyond its limit of elasticity. The coperating surfaces of 46 and-47 arc preferably grooved so as to prevent displacement of the wire. The feeding mechanism comprises a slide 50. adapted to reciprxxrate in slot 51 in the front l of the case. The slide 50 is held in the. retracti-d position under tension of Ispring 52. and is moved against. the tension of said spring by a lever 5H, forked or slotted al the free end 54 to engage pin or projection 55 ou 5t).l The gripping device consists of a stationary clamping member :"7 and a cooperating pivoted pawl 58 tending toward said surface by reason of tension of spring 6l. As shown, the stationary clamping member is formed as a U-shaped projection from the reciprocating member 50,.

orcedA downwardly by The `screw 62 mounted in a b oss 63, which is preferably solid with base 1..

The operation of the device is as follows: The handle 6 is initially in the rearward position.' indicated 'by the dott ad line A, Fig. 14. This corresponds to the position shown in Figs. 1 and 2, and the hand lever 6 is preferably normally forced back to this position by means of a powerful coiled spring 70.

The sheets of paper or other material to be stapled are inserted in the slot 71, under the guides 72, with the particular point to be stapled located directly over the anvil 14. The various operations are successively by forward movement of the hand lever 6. The-first movement of the handle from the position indicated by dotted line A, Fig. 14, to that indicated by dotted line B, brings the parts to the position indicated in Fig. 4 of the drawings. During motion through this portioni of the arc. the face projection on cam 10 engages the lever 53, preferably through the medium ol" the antifriction roller 72. As lshown more clearly in Fig. 10, this forces the free end of said lever 5f', in the directionof the staple forming mechanism, the pawl 58 gripping the wire 40 so that the free end of the wire is fed across through the slot 18 in the staple forming anvil 16, as indicated in the various figures. equal length of Wire is thereby drawn from the reel 41 and dragged through the wire straightener 46, 47. At this time, cams l1 and l2 engage the, cam surface on block 25 with 34, causes a sharp downwardmovement of the staple forming members 17, 17. In its downward movement, the outer edge of one of the members 17, shears the wire where it. projects from the face ,of the tool Steel bushing 22. 'lhe open end of 'the grooves 21 register exactly with the wire thus cut off, and further downward movement operates .to bend the wire against the parallel sides of the anvil 16 to form rthe legs of the staple. The grooves 21 being straight and. being then performed f At the same time. an.

cam surface 36, thereby forcing the staple Y Vmoved 'o'iitlie a c of a might .tendto have some shearing `action on the staple wire were it notl that the latter is free to slide along the upper surface of the anvil, thereby accommodating itself v to and permitting whatever play isnecessary to compensate fory the difference between the .arc or curve on which the groove 2l moves and the straight line or tangent along which. it is foi-med.

A further movement of the hand lever to the position shown byther dotted line D, serves to bring the cam 11 into contact with forming member carrying the staple held in grooves 21, under the. staple driving member 15, into the position shown in Fig.l 6'. It will be noted that during this part of the with the axis, sethat4 for the remaini'ifig.v

ortion of the forward movement Aof the iandle 6, the staple is securely held in. position, the groovesl 21 serving as guides for the legs of the staple during the driving and vclinching operation; A further movement of the hand 1ever`6, to the position shown by dotted line E, causes' the prolection V13 to come in contact with the head of the driver 15, which is forced downwardly, the groove 38 engaging vthe body portion or head of the staple.v A further downward movement forces the staple downwardly along grooves 21, which serve as guides to support the 'staple against distortion during the driving and clinching operations. The rlegs are forced through thematerial and engage the respective ends of the` groove 39.` Continued downward movement of the plunger then operates to progressively bend the ends of the legs of the `staple `toward each other. At this point, the staple is securely `held and prevented from movementout of the driving plane bythe groove 38 onthe'driver,

the side grooves, 21 in the. former, and the bottom. groove 39 inthe clincliing anvil.

The groove 39 is referably formed shallower at the center t an at the ends, so that when clinched the :free ends of the staple approach each other at a rentrant an le clamping themateria-l more firmly at t er free ends than at the bends, the endsi of the grooves 39V being deep enough .so that the bends cannot `be. mede too sharp. As is seen by reference to Fig.v 9, the clinching groove 39 is preferably in the form4 of twooppositely extending grooves formed in such a. manner thatA their inner ends are out of alinem'ent and overlap; such a construction permits of increased length of the clinched spring 70.

, movement to cut and form t e staple and end 1 portions of the staple and secures s clmching effect of maximum strength and When the forward movement of the hand -lever `6 has been completed and they staple 'its foi-ined, transferred, driven, and clinched,.` asv above described, the handle is moved back to the initial position, either by the operator or` automatically by action of ,This operates to restore alll .1i parts to the initial position, ready for the next stapling operation.

While I have herein fully shown and de-` scribed, and have pointed out in the uppelxd-r ed claims certain novelfeatures of construe li i tion, arrangement and operation which: characterize my invention, it will be under#` stood by those skilled in the art thatvari-f" ous omissions, substitutions and chan es in the forms.4 proportions, sizes, and c etails 35 of the device and of its operation, Amay be made without departing from the spirit of my invention.

It will be obvious that where it is desirable to apply several staples simultaneously In or affixed distances from each other, amphi- `rality of stapling devices may be employed and that if desired, these may all be opere, ated from the same cam shaft.

Havingthus describedniy invention what Il I claim as new and desire to secure by Letters Patent of the United States,is:-

1.A In a staplin'g machine, awire vsu plying` mechanism,a staple cutting and orming mechanism having a rocking reciproca` 100" tory movement and Aa staple driving mecha.- nism having a rectilinear reciprocatin movement, in combination'with a single roc shaft provided with means for effecting complete actuation of said mechanisms by a 105 single movement inv one direction of said shaft., 2, In a stapliig machine, a wire-supplying mechanism. staple-cutting and forming reciprocatory no rectilinear reciprocatory movement to transfer the staple to driving position, and mech-l anism for driving the 'staplein said ositio'n, in combination witha single rock-S iaft 115 provided with means for effecting complete actuation yof said mechanisms by a single movement in one direction of said shaft.

3. In a stapling machine, a wire-supplying mechanism, a combined staple cutting 12D andjforin'ing mechanism, and staple guiding and driving mechanism, in combination with a single rock shaft provided with means for effecting complete actuation'of l said mechanisms by a single` movement `in 1121i one direction of said shaftpaiid cam means having eccentric portions arrangedin permechanism having a rockin nianent contact with said forming .meohanism sqthat the shaft moves the forming mechanism and at intervals-holds said mech- 180 stationary, sai .i sta-ple ri'iifiv'iug mechamsn being opeimavgly connected with slid shatonly ai iii actual operation.

g machine. a wire-supplytion of said shaft, cam means having eC- ciitriie portions arranged in permanent contact with said forming mechanism so that the shaft moves the forming mechanism and at intervals holds said mechanism stationary, said staple driving mechanism bein operatively connected with said shaft on y when in' actual operation.l and means independent of the staple forming means for returning Said staple driving mechanism to normal position after each operation of the same.

In a stapling machine, a wire supplying mechanism, staple cutting and forming mechanism, a stationary anvil or forming block coperating with said forming mechanism, a staple guiding and driving mechanism, in combination with a single rock shaft provided with means for effecting complete actuation of said mechanisms in the order named to cut, form and drive a staple by a single movement in one direction of said shaft.

6. In a stapling machine, a wire supplying mechanism, staple cutting and forming mechanism, a station'ar;Y anvil or forming block coperating with said forming mechanism, staple driving nism for shifting the staple from the forming to the driving position, in combination with a single rock shaft provided with means for effecting complete actuation of said mcchaiiismsby a single movement in one direction of'said shaft. i

7. lu a stapling machine. a wire supplying mechanism, staple cutting and forming mechanisms, staple driving mechanism, and

means for shifting the form-ing mechanismto cause the same to convey the formed staple to tliedriving mechanism, said forming mechanism having a rocking movement around a pivot in forming the sta-ple and having a shifting movement on its pivot to transfer the staple to the driving mechanism, in combination with a 'single rock shaft provided with means for effecting complete actuation of said mechanisms by a single movement in one direction of said shaft.

8.'Iii a stapling machine, a wire feed mechanism, a stationary staple forming block and a staple driver, in combination with a staple former the frame of the machine. for

and means giving said staple former a rocking recipro-- catory movement to form the staple over "staple beneath the sta mechanism and mechaslidably pivoted in said stationary forming block and a. rectlinl enr'-reciprocatory movement to place the le driver. i

9. In apparatus o the character described, 'the combination with staple forming means and staple setting means, of a. single operating member to effect the functioning of said means, a cam on said niember 'to actuate said forming means and maintain it stationary in actuated position, and an additional cam on said member for operating saidsetting means.

10. In apparatus of the character described, the combination of a wire-feeding means, staple forming means and staple eett-ing means. a shaft. a cam on said shaft for operating said wire-feeding means, a cam lever mounted upon said shaft, the cam thereof being adapted to e'ect the functioning of said staple forming means, and a projection extending from said lever for operating the staple setting means.

11. In apparatus of the character described, the combination of wire-feeding means, staple forming means and staple setting means, a shaft., a cam on said shaft, for operating said wire-feeding means, a lever mounted upon said shaft, a-cam integral with said lever and provided with an inactive surface which first becomes effective to permit said first-mentioned cam to function upon the movement of said lever, said inactive surface on said cam member being followed by an active surface for effecting the operation of said staple forming means, and said active surface being followed by a second inactive surface forfretaining said forming means in a given position during the operation of said staple setting means.

1'2. In apparatus of the class described, the combination of means for holding a section of staple forming wire, a forming head, a staple setting inem er, an operating lever, a cam forming a part of said lever for moving the forming head into position to form the staple and to maintain the head in position to hold the staple for, setting, and a cam integral with said lever for actuating the said member to sctthe staple.

13. In apparatus Aof the characterl described, a base having an upright portion, a wire containing spool, mounted on said base, a tensioning spring eiigaginr thceiid of said spool, and means on sai upright portion engaging the end of said spring'to prevent the latter from` rotating with the 'said spool.

moved independently of the operating handle, and a pocket in' the base of `said casing to`receive articles to besta. led. Y, p l

15. In apparatus'of `t e character de scribed. a casing having an end wall,- a wire-y eontaining spool mounted adjacent -said` wall, a tensioning spring engaging the `end i of said spool and having one of its ends eX tendingr beyond theedge of the spool head, and ribs formed on the end Wall adapted to accommodate .the projecting Iend ofsaid spring, whereby the latter is prevented from rotating with said spool.

1G. In a st'apling machine, a wire-supply ing mechanism, a staple cutting and forming mechanism having a rocking reciprocatorvw movement lin combination with a single', shaft provided with means for effecting complete 4actuation of said mechanisms by a single movement in one direction of said sha't.

11. In stapling mechanism, the combinai tion of wire-feeding and cuttin mechanisms, Staple formingand stap e setting mechanisms, an operating lever for actuating" said mechanisms by a continuous lmovement in one direction, and means for automatically returning the Wire1 feeding, staple forming,V and staple setting mecha nisms to initial position.

18. In stapling mechanism, the combinanisms, staple forming and stap e setting mechanisms, an operating lever for actuatmg said mechanisms by a continuous move-` u; so?

`ment in onigdirection, means for automati- "ng the wire-feeding, staple cally" reta forming and staple setting mechanisms to initial position, and means for limiting the lovement of the staple lforming mechanism into initial position. l

19,. An apparatus of the class described,

the combination with staple forming meansv and staple setting` means, of a s' le operating member to effect the functiomng of. said means, acam on said member to actuatethe said forming means and maintain it in actu;-v

ated position, and an additional cam on said member for operating said setting means. i

20. In apparatus of `the ycharacterwdescribed, the combination of a wire feeding means, staple forming means and staple settingmeans, a shaft, a cam on sai(iihafty for operating said Wire-feeding means, a cam lever mounted upon said shaft, the cam thereof being adapted to effect the functioning of sadfstaplc forming meansgahd a projection extending from said lever for operating the. staple setting means.

2.1. In apparatus of the class described, the combination of means for holding a. section of staple formin wire, a forming head, a staple setting mem er, an operating lever,

a cam forming a part of said lever for mov-` ing the forming ead into position to form the staple and to maintain the head in posi tion to hold the staple for setting', and a cam integral with said lever for actuating the i 4er, i,

said staple setting' member to set the staple.

MILLER nEEsE HUTcHIsoN.

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