US838008A

US838008A - Pliers for cutting, forming, and clenching staples.

Info

Publication number: US838008A
Application number: US29308505A
Authority: US
Inventors: Edward Farrington Chandler
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-12-23
Filing date: 1905-12-23
Publication date: 1906-12-11
Anticipated expiration: 1923-12-11

Description

No. 838,008. PATENTED DBO. 11, 1906. E. P. CHANDLER L W. N. RICHARDSON.

PLIERS FOR CUTTING, FORMING, AND CLENGHING STAPLES.

APPLICATION FILED 1130.23.1905.

2 SHEETS-SHEET 1` .fc/@dlg No. 888,008. PATENTED DEC.11, 1906. E. F. CHANDLER & W. N. RICHARDSON.

PLIBRS POR CUTTING, FORMING, AND CLENCHING STAPLES.

APPLIOATION FILED DB0. 23. 1905.

2 SHEETS-SHEET 2.

vin., "lrurppn llllill Nvi- IIII l a UNITED STATES PATENT OEEIOE.

EDWARD EARRINGTON CHANDLER, OF BROOKLYN, AND 4WILLIAM NEWTON RICHARDSON, OE NEW YORK, N. Y.; SAID CHANDLER ASsIoNOR To SAID RIOHARDSON.

PLIEns' Fon CUTTING. FORMING. AND cLENcHlNG STAPLES.

To all whom it may concern.- Be it known that we, EDWARD FARRING- TON CHANDLER, residindg at Brooklyn, in the county of Kings, an WILLIAM NEWTON RICHARDSON, residing at N ew York, in the countyof New York, State of New York, citizens of the United States, have inventedl a new and usefu'llmprovement in Pliers for Cutting, Forming, and Clenching Staples, of which the following is a specification. f This invention relates to an improvement in stapling'pliers, and particularly to a device for cutting, forming, and clenching staples around cross-Wires at the point of Intersection tosecurely and permanently lock them to ether. l

The o ject of the invention is to provide a strong, and durable tool that will out a t strip orbar from .the end of a piece of metal, form it into a staple, and clench the staple'around twov or more wires.

Further objects of the invention are to (pirlp-- i g vide an automatic feeding device for fee the piece of metal into position to be operated upon by the' cutter, to hold the metal against accidental displacement, and to limit its movement, so that the same breadth or thickness of allthe loops is assured.

Still a further object is to rovide an arrangement in"-which any one o the parts may be readily re laced should it become worn or-broken an without the necessity of dis-` turbing the remaining parts or causing the complete loss of'theentire tool;

With these objects in view the invention also possesses certain novel features of construction and'peculiarcombination and arrangement of parts,` as will be fullyset forth in the following specification and pointed out in the claims, reference being drawings, in which- Figure 41 is a perspective view of a tool conad to the structed in accordance with our invention.

Fig. 2 is a'plan viewof the same with one of the Y plates of the head removed. In this view the clenching-arms are shown open and the cutting-blade withdrawn into the head.

Fig. 3 is a similar view to Fig, 2, showing the clenching-arms and the cutting-blade moved to its extreme forward position.v 1 Fig. 4 isa longitudinal Section drawn on the line 4 4 of Fig. 3. Figs. 5, 6, and 7 are detail diagram;

specification e'f Letter. Patent.

' innemen mea members, mos. Serin No. 293.085.

is a detail perspective view of the feeding A metal from which the stap resented Dee. 11, 190e.

matic views illustrating the varioussteps in cutting a piece j of `-metal and showing the manner in which the severed piece is clenched. Fig. 8 is a detail view of a portion of the piece of metal illustrating the sta le befor'it has been entirely severed from t ebody portion of the metal. l Fig. 9 'shows details of various methods of clam two wires together. Fig. 10 is a' plan view of the head and of the opposite Side to that shown in Fig. 1, illustrating the feed device. Figs. 11 and 12jare Sectional side views drawn on the irregular -line 11 `12 of Fig.- 10 of the drawings. Fig.

13 is a detail perspective view of the forward end ofone ofthe plates of the head. Fig. 14

vice. Figs. 15 and 16 are detail views o clenchjng-arms, and Fig. 17 is a detail perspective view of the cutting-blade.

In constructing a pair of pliers in accordance with our invention we provide a head A, which is formed of two elon ated plates A and A", between which are he d the various parts Of the devicefor cutting, forming, and clenching the staples.. The plates are held some distance apart by sets of stud posts or bolts'al a a2, which are preferably formed upon the late AZ and have their ends reduced to provi e shoulders over andup'on which rests the plate A', and the latter is securely held in position by screws a3, threaded into theposts.

Operating-lever handles B B are j ournaled intermediate their ends u on the posts a2 at the rear end of the hea ,and to their eX- treme forward ends is connected one end of links C C, whose opposite ends are held upon a stud-bolt Cf, carried bya cutting-blade D. The blade D is of a greater width at its rear end than at its forward end lto provide shoul ders D upon each side thereof, said shoulders acting as cams to operate clenching-arms, to be explained later on.. The extreme forward end of the blade is'blfurcated, as at D2, to provide two cutting-ngers D3 D3, the ends of which vare slightly beveled lto produce a sheering cut when first engaging a piece of es are formed. Pivotally held lupon the posts a atthe fordethei ward end of the head are clenching-arms E E,

whose rear ends are apertured to receive the which are normally held in engagement with tllesides of the cutting-blade tby a spring F, held between the arms and engaging them at points directly forward of the center of their pivots. The forward ends E2of the arms are reduced in thickness to provide nose portions, and each nose portion is tapered upon its outer edge and recessed upon its inner edge, as at E5, the said recesses providing a space for the wires to be clamped when the nose portions are brought together. Upon one side and at the extreme ends the nose portions are increased in thickness, as at E, and each thickness is slotted to provide a throat or passage-way E5 for the fingers Da of the blade when the latter is projected forwardly and after the fingers have severed the end of the iece of metal and when clenching the stap es. The abutting ends of the nose portion provide an abutment for the end of the staple, and each is slightly recessed, as at E7, to provide a guide to prevent the ends of the staples buckling or being twisted out of alinement when being clenched.

The head-plate A2 extends slightly beyond the plate A at its forward end and is rein- -forced upon its inner face and upon each side edge of the plate, as at A3, and the spacebetween the reinforcements forms a guide A4 for the forward end of the cutting-blade. The said end is also reinforced upon its outer face, and the front edge is recessed at A5, and communicating therewith are non-circular bores A5, formed in the extreme ends of the reinforcements. Fitting in the bores is a noncircular die-bar G, which with the end of the head-plate forms a guide-slot G for the piece of metal H. In practice we propose to make the bore and the die-bar perfectly square in cross-section, so that the bar may be removed and turned whenone edgebecomes dull, and thereby utilizing all four edges of the bar.

To automatically feed the piece of metal HV through the slot and into position to be operated-upon by the cutting-blade, We employ a lfeeding device, (best illustrated in Figs. .10,

1112, and 14 ofthe-drawings and from which' it will be seen it comprises a springplate I, that is securely connected at one end to the plate A2, preferably by a screw i, and at its forward end the plate is slotted at I I to produce a central gripping-tongue I2 and two guide-fingers I3 I5, the latter extending beyond the end of the tongue and having their inner edges recessed, as at I, into which fits the piece of metal H, so that the tongue will engage the broad surface thereof.

The late I carries a pinI5, which extends througff a slot I5 in the head-plate AZ and normally rests in a slot D5 in the cuttingblade when the latter is in its rearmost position. The purpose of this peculiar arran ement and the general operation of the devlce will be best understood from the following general description.

' engage the A piece of metal H of even dimensions throu hout its len th is inserted in the end of the p ate I and t .ough the slot G and is.

pushed therethrough until .the end engages the clenching-arms. The tool is then ready for operation, and by grasping the handles B and mserting the nose portions of the clenching-arms over the wires to be fastened and ressing the handles together the cuttingblade is first brought into engagement with the sides of the end of the strip of metal H, which cuts and bends the ends forwardly. At the moment the cutting-blade is moved forwardly the shoulders will engage the antifriction rollers or disks of the clenehing-arms and throw the inner ends outwardly and the nose portions into engagement with one another and are held in this position against the tension of the spring F by the rollers engaging the broad end of the cutting-blade. As the blade continues to move frowardly the sides of the strip of metal are completely severed and the ends of the strip are bent forwardly into U-shape staples and remain in this position with the parallel portions restin against the inner edges of the fingers D. T en upon a continued movement of the blade the edge at the end of the bifurcation will engage the central portion of the metal and gradually shear it from the body portion. This 4action also bends the outer ends of the staple toward each other and throws them into position to engage the abutting ends of the nose portions. Now upon a continued movement of the blade the central portion will be completely cut off, and as the fingers project into the guideways or throats the staple will beformed into a complete loop, as shown in Fig. 7, and thus tightly clenched around the wires and securely clamping them together.

At the moment the edges of the metal are firstV cut and bent over the die-bar Gr the rear end of the slot D5 in the cuttin -blade will which will t ow the latter outwardly and move the tongue I5 along the side of the-body of the strip H, andthe'moment pressure is relieved upon the operating-handles the s ring B will throw them apart, which withaws the cutting-blade into the head, and the spring F will throw the clenching-arms to open their outer ends, and when the slot D5 comes opposite the pin I5 the plate I will spring to its normal position and move the piece of metal H through the slot and into position, so that its extreme end may be again severed by the cutting-blade. From this it will be seen that the moment the end of the piece of metal is cut and the ends extended over the die-bar it is securely locked in position and will not be moved through the friction of the tongue when the latter is moved alon its surface and into position to again feed t e strip through the slot'.

in I5, carried by t e plate I, Y

IIS

IZO

- i sss,ooe

' In we show the end ofthe piece of metal the ends have been cut and bent and desire lto secure by a cut -blade, clenc arms operated by the blade, and lever-han es operatively connected with the blade. 3 2. A tool ofthe kind described com .-a movable cutting-blade, clenching-arms operated by and with the blade, lever-handles for operating the blade, and a feedingd device operated substantially as s 3. A tool of the kind described comprising` va movable cutting-blade, clenching-arms operated by the blade, lever-handles for operating the blade, and a feeding device operated by the blade and adapted for moving a piece of metalinto the path of the cuttingblade.

4. A tool of the kind described, comprising a cutting-blade, arms coacting with the blade to clench astaple after it has been cut and formed by. the cutter, lever-handles for operating the blade, and a feeding device operated by the blade.

5. A tool of the kind described comprising ver-handles pivotally supgortedby the head and operatively connecte with the cuttingblade, andclenching-arms operated by and coacting with the blade. g

6. A tool of thekind described comprising a head, a cutting-blade operating therein, le-

ver-handles pivotally su ported by the head andconnected to the b ade, clenching-arms pivoted within the head and operated by and coactingyvith th'e cutting-bla e, and a feedlng device supported by the head and operv ated by the said blade.

7. A tool of the kind described comprising held a art by stud-bolts, -one' of the said bar supported in one end, a cutting-bladeA y retained in the gudeways, levera head, having guideways therein, and a diemovab handles pivotally sup orted by the head and connected with the dium of links, clenching-arms ivotally held in the head, Isaid arms being .a a ted for operation by and vcoacting with t e cuttingblade, and a feeding device for feedin a stri of metal against the die-bar and in tv e pat of the cuttlng-blade.

8. A tool of the kind described comprising a head, a cutting-blade -slidably retained therein,lever-handles supported by the head for operatin the cutting-blade', clenchingarms pivota y connected to the head and coacting with the cutting-blade, and means for feeding a piece of metal into the path of the cutting-blade.

9. A tool of the kind described comprising a headV having a guide-slot therein, a cuttingblade operating inthe head, lever-handles for ascribed our invention,

a head, a cutting-blade operating therein, le-

lade through the me-` operatingthe blade, clenching-arms coacting with the blade, and means for feeding a piece of metal through the guideslot 'and into the path of the cutting-blade.

10. A tool of the kind described comprisin a head having a guide-slot, a blade slidablv lretained withln the head, said blade -its forward end terminating in cutt' gers, lever-handles for operating the b ade,

clenchin'g-.arms coacting with the blade, and a feeding device adapted for feeding a piece of metal through lthe path of the cuttingers. A Y

1 1. A tool of the kin described comprising a head having a guide-slot therein, a blade slidably retained within the head and having one end terminating in cutting-iingers, leverhandles for opterating the-blade, clenchingarms operated y and coacting With the blade, and a feeding device operated by the blade guide-slot and intothe and adapted forfeeding a pieceof metal ilgllirugh the slot into'th'e path of the cutting- 12. A tool of the kind described comprising a head having a recess in its forward end and apertures communicating with the recess, a die-bar held in the apertures and forming with the end of the head a slot ada ted to receive avstrip of metal, a cuttinbla e slidably retained within the head and aving one end terminating in cutting-fingers and lts opposite end enlarged to provide cam-surfaces, le-

ver-handles pivotally connected to the head,

links connected to the handles and the blade, clenching-arnis pivotally held in the headand havin one end adapted for engagement with the siesof the cutting-blade, said arms being adapted to -coact with the cutting-blade, and a feeding device operated by the blade fpr. feeding a piece of metal through the guides ot.

13. A tool of the kind described comprising a head consisting of two plates which are lates avin a guideway therein, a die-bar iield. inV the p ate and forming with the end of the latter a guide-slotV adapted to receive a piece of metal, a cutting-blade slidably retained inthe guideway, said blade having one end terminating in cutting-fingers, leverhandles ivotally retained betWeen the plates, links connecting the handles and c ut- IlO ting-blade, clenching-arms pivotally held between the lates and having their forward ends exten 'ng beyond the end of the head and terminating in nose portions, and their rear ends provided with antifriction-rollers which engage the sides of the cutting-blade, and a feeding device operated by the blade, substantially as s ecified.

14. A tool of t e kind described comprising a head having a guide-slot adapted to receive a iece of metal, a blade operatively held Wit 'n the head, clenching-arms carried by the head and operated by and coacting with the blade,-said arms having nose portions at one end which are provided with passage-ways, cutti -fingers formed upon the blade and adapte for engaging a piece of metal to cut and form a staple and press it into engagement with the said nose portion of the arms to bend or clench thesaid staple,

and lever-handles for operating the blade.

15. A tool of the kind described comprising a head having a 4guide-slot formed therein, a cutting-blade operatively held in the head, clenching-arms operated by and coacting with the blade, levers for operating the nating in cutting-surfaces, clenching-arms pivotally held in the head and having their forward ends terminating in nose portions which are extended beyond the end of the head and coact with the cutting-surfaces of the blade as specified, cam-surfaces formed upon the blade for operating the arms, leverhandles for operating the blade, and a feeding device o erated by the blade.

17. A too of the kind described comprising a head having one end provided with noncircular bores which communicate with a recess' formed in one end of the head, a noncircular die-bar held in the bores and extending across the recess to form a guide-slot, a

` ciitting-blade slidably retained in the head and adapted to move across the guide-slot, clenching-arms held in the head, said arms being operated by and coacting with the cutting-blade for the urpose specified, leverhandles carried by the head for operating the cutting-blade, and a feeding device operated by the blade and adapted for moving a piece of metal through the guide-slot.

18. A tool of the kind described comprising a head consisting of two plates, one of which has a series of stud-bolts projecting thereform, and to which the opposite plate is held, one of the said plates being reinforced at one end, and the central portion cut out, a die-bar held inthe said end and extending across the cut-out portion to form, with the end of the plate a slot that is ada ted to receive a piece of metal, a cuttinglade slidably retained in the head, lever-handles pivotally held in the head for operating the said blade, clenching-arms pivotally held inthe head and' having their forward ends terminating in nose portions which are provided with guideways and their rear ends provided saaoos with rollers to engage the sides of the cuttingblade cam-surfaces formed upon the sides of the blade, a spring for holding the rollers in engagement with the side of the head, and a feeding device carried b the head and operated by the cutting-bla e.

19. tool of the kind described comprising a head, a cutting and staple-forming blade operating therein, and a feeding device for feeding a strip of metal to the cutting'- blade, said feeding device comprising a plate of spring metal which is secured at one end` to the head and having guideways at its opposite end, a spring-tongue that is adapted for engagement with the strip of metal, and a pin for engagement 'by the cutting-blade, substantially as set forth.

20. A tool of the kind described comprising a head having a cutting and staple-forming blade operating therein, and a feeding device for feeding a piece of metal to the blade and from which the sta les areformed, said feeding device comprising a plate of spring Inetalhaving a tongue portion and guides for engagement With the metal, and means operated by and coacting With the said cutting and staple-forming blade for clenching the stple, substantially as speciiied.

21. described, com rising a plate of spring metal having one en slotted to produce a central tongue portion, and two side fingers which are of a greater length than the tongue portion and having recesses upon their inner edges at the end of the tongue.

22. A tool of the kind described comprising a head having a guide-slot that is adapted to receive a strip of metal, a cutting-blade operating in the head and ada ted for severing the end of the metal and orming it into a sta le, a pair of clenching-arms coacting with the cutter, said arms having their outer ends providedy with guideways to receive the ends of the cutter, and also having abutting surfaces to engage the ends of the sta le when pressed into engagement therewit by the cutter.

23. A tool of the kind described comprising a head, a pair of arms journaled therein and adapted for holding two cross-wires together at the points of their intersection, a cutting-blade adapted for cutting the end of a piece of metal and forming `it into a staple and bending the said staple around the wires at the points of intersection, said blade also coacting with' the arms for clenching the staple.4

24. A tool of the kind described, comprising a head that is ada ted to receive a strip of metal, arms pivotal y held in the head and having their ends extending beyond the head, their outer edges tapered and their inner edges recessed and beveled, said arms being adapted to encircle and hold two cross-Wires at their points of intersection, a

feeding device for pliers of the kindl IOO IOS

IIO

cuttin -blade `operating the head, said y blade aving one end provided with two cutting-fingers, and han les-vforoperating the blade to sever the end of the metal and bending` the severed end in U-shaped staples, passing the staples aroundl the wires at their points of intersection and coacting With the arms to clench the sta les.

25. A tool of the kind described comprising a ,head adapted to receive a strip of metal, arms pivotally held in the head and having one end `projected beyond the end of the head, the inner edgesof said arms' being recessed and adapted to encircle two crosswires at their points of intersection When the outer ends ofthe arms are brought together, a blade'operating Within the head and having fingers lthat. are adapted to sever the end of the piece of metal. and bend theA severed ends over the wires at the points of intersection,

the said blade being ada tedv to entirely sever the end of the metal a er the ends have been extended over the Wires and coactin With the arms for clenchn the staple aroun the wires, and means or operating the cutter.

26. A tool of the kind described, comprising a head adapted to receive a strip of metal, arms .pivotally held in the head, said arms having one end rojected beyond the head and the projected ends being recessed upon their inner edges, a blade operating Within the head and adapted for operating the arms to bring their outer ends together, said blade having cutting-fingers which are adapted for first cutting the end of the metal upon opposite sides and bending the' severed 'ortions into parallel relation, said blade being also adapted to completely sever the end to form a staple and coacting with the arms to clench the staple, substantially as specified.

27. A tool of the kind described, comprising a cutting-blade,clenching-arms o erated by and coacting With the blade, an means for operating the said blade..

DDWADD DADRINGTON CHANDLER. WILLIAM NEWTON RICHARDSON. Witnessesz` M. D. BLONDEL, E. M. VENN.