US705433A - Staple forming and driving machine. - Google Patents

Description

No. 705,433. i Patented July 22, |902.

G. w. PACKER.

STAPLE FBMING AND DRIVING MACHINE.

. (Application mea occ. 19, 1900.) l

(No Model.) 3 SI1 -Sheet I.

v T11 -ll ven/Ko 5l lll Patented .luIy 22, [902.

3 Sheets-Sheet 2.

Ihvenor llllllllllll/ G). w. PACKEH.

(Application led Oct. 19, 1900.)

STAPLE FORMING AND DRIVING MACHINE.

- (nu Mum.)

No. 705,433. Patenced July-22, |902.

.Y G. w. PAcKEn. j

,STAPLE FORIIING AND DRIVING MACHINE. (Application Bled Oct. 19, 1900.) A (llo Model.) 3 Sheets-Sheet 3.

H WM VMM @M UNITED STATES PATENT OFFICE.

GEORGE W. PACKER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE DEERING HARVESTER COMPANY, OF CHICAGO, ILLINOIS.

STAPLE FORMINGHAND DRIVING MACHINE.

SPECIFICATION forming part of Letters Patent No. 705,433, dated uly 22, 1902.

Application led October 19, 1900. Serial No. 33,595. (No model.)

T0 @ZZ 11177/0797/ W000i/ C07K/'WW y set face c2 to forma rabbet or recess. The Beit known that I, GEORGE W. PACKER, a inner beveledface c' has a steel block c3 set citizen of the United States, residing at Chitherein, which block, cooperating with block cago, county of Cook, State of Illinois, have 14 and groove o, forms a cutter for the wire. 55 5 invented certain new and useful Improve- The lower end of slidec is bifurcated to form ments in Staple Forming and Driving Maa fork c4, the inner walls or throat of which chines; andI d0 hereby declare the following are channeled, as at c5, for purposes to be deto be a full, clear, and exact description'of the scribed later. The :rear face of the slide c invention, such as will enable others skilled has a kerf or channel c7 and a recess e9 at its 6o 1o in the art to which it appertains to make and upper end, while the lateral face is beveled use the same. orchamfered, as at cs; Projecting rearwardly The invention has for its object to provide from face c2 is a cam c. an improved automatic machine for forming Mounted in the recess of slide c, which will staples from a continuous wire and setting or hereinafter be designated the cutting and 65 15 driving the staples so formed into the parts forming slide, is a reciprocatory drivingto be united thereby These objects I obslide b, which has an elongated slot b4, entain by means of the mechanism illustrated gaged by a suitable pin 010, projecting from in the accompanying drawings, in Whichslide c, whereby aslip or sliding connection Figure l isaside elevation of myimproved between the respective slides is provided. 7o zo machine. Fig. 2 is a fragmentary side ele- Projecting rearwardly from the lower end of vation representing the parts in driving poslide b is a driving-head b5, which lits within sition. Figs. 3 and 4are vertical sections on the throat of the fork c4 and is accurately lines 3 3 and44, respectively,of Fig. 2. Fig. guided therein by lateral ribs bs, which en- 5 is ahorizontal section on the line 5 5 of Fig. gage channels c5. 75 z5 2. Fig. 6 is an inverted plan view with a Mounted on a suitable pivot-pin b3 under section through slides on line 6 G, Fig. 2. Fig. the head b' of slide b is a dog b2, having a flat 7 is an enlarged perspective'view of `the opunder face and alateral finger. When in operative mechanism, showing the staple in erative position, said dog is engaged by a process of formation. Fig. 8 is a perspective stop 1l on the frame, which forces it against 8o 3o view of the cutting and forming slide viewed the side of slide b in position to engage the from the rear. Figs. 9 and 10 are detail views upper end of slide c, as shown in Fig. l. The in perspective of the anvil and driver-slide. upper end of slide b is provided with 'a T- Fig. l1 is a horizontal-section on line 11 1l of head b', which engages the fork end a4 of the Fig. 1. .cross head a3, reciprocating in a suitable 85 3 5 Referring to Fig. 1 of the drawings, -1 repguide 4l on the bracket 2. A power-shaft a resents a supporting-frame, having a vertical has mounted thereon a crank-disk a', which bracket2andarearwardly-projecting arm 3. is connected by a link ae with said cross- Vertically disposed in the frame lis a guidehead a3. groove 4, having a rear wall provided with a Pivoted in the slot 7 by means of a pin d' is 9o 4o face 6, parallel with the face of the frame, an anvil-bar d, provided with a forwardlyand a beveled face 5, adjacent thereto. To projecting toe or anvil d2, which normally the rear of the groove 4 is a groove 7 and a lies below and in alinement with the throat of slot 71, extending through the frame. Fitfork c, with its upper face substantially in ting snugly in a suitable recess in' the frame the plane of groove o, whereby the wire pro- 95 45 is a block 14, of steel or other hard metal, havjected from said groove by the feeding meching a beveled facelying in the plane of the anism Will-be supported in proper `position to face 5 of the groove 4. A longitudinal groove be operated upon. The lateral face of the bar o in the top of said block placed at an acute d has an inclined lug d4, which is adapted to angle-to the beveled face forms a wire-guide. be engaged by cam c6 on slide c when said slide 1 oc 5o A slide c, reciprocating in the groove 4, is is depressed, thereby rocking the bar d on its formed with a beveled rear face c and an offpivot and retracting anvil d2 from its position in front of the fork. The upper end of har d is provided with a projection d3, which engages kerf cT in the rear face of slide c when the bar is retracted and which rides out of said kerf onto the rear of the slide, thereby again projecting anvil (Z2 under the fork when said slide cis elevated. The relative arrangement of these parts in the upper and lower positions of the plungers is clearly shown in Figs. 3 and 4.

In order to secure a regular and automatic feeding of the wire tothe cutting and forming mechanism, the following means is provided: A combined ratchet and gear wheel e is mounted upon a suitable stud e2, secured to the frame 1, on which stud is also secured a knurled feed-roller e. Loosely mounted on stud cgis a segmental plate e3, to which is pivoted a series of spring-pressed pawls e, arranged in differential relation to the teeth on wheel e. Plate e3 has a projecting arm e5, which is operatively connected with a rocklever e, pivoted to the bracket 2, by means of a rod c, having connecting-links e7 and e8 at the respective ends thereof. Rock-lever e is actuated by means of a suitable cam-groove e in a disk cl2, mounted on shaft a, which groove is engaged by a bowl e10 on the end of said level'. Pivoted to the frame 1 is a lever ew, carrying a gear cl3, meshing with gear c, and a knurled roller e, opposite the corresponding roller e, said gear and said roller being rotatably mounted on stud ew. The outer end of lever el is connected to a link e, which fits in the forked end of arm 3 of the frame. A spiral spring els surrounds the link and is held under tension by means of a nut el, between which nut and the fork of arm 3 said spring is adjusted.

The slides are held in proper position in the groove 4 by means of a face-plate 13, which is bolted to the frame, and plate 13 is provided with flanges fitting corresponding grooves 3l in the face of the machine. v

As illustrated, the machine is designed to apply the formed staples in fastening the slats s to the canvas apron r of a harvester, and although so shown it must be understood that the application of the device is not limited to such use, but is susceptible of employment in the various arts where analogous machines or operations are required.

My improved staple forming and driving machine, constructed as above described, operates as follows: A length of wire, preferably of half-round section, is drawn from a suitable reel (not shown) and forced between the feed-rollers e and @14 through the guideslot o in block 14, with its projectingend resting on the top face of anvil d2 and abutting the opposite side wall of groove 4. Power is then applied to shaft a and the mechanism started, all subsequent operations of the machine being entirely automatic. The canvas apron r,havin g the slats properly placed thereon, is fed by hand orsuitable automatic means over a table or support (not shown) to bring the slats successively under the staple-driving slide. Starting from the position shown in Fig. '1, shaft a, crank a, and link a2 reciprocate cross-head 0,3 and connected driving slide b. The initial movement of slide b causes a corresponding movement of slide c through the connecting pivoted dog b2, the lower end of slide c being somewhat in advance of the corresponding end of slide b. As slide c descends the beveled cutting-block c3 thereon meets the wire projecting from the sloto in the correspondingly-beveled face of block 14, with the result that a suitable length of wire to form a staple is sheared olf with a tapering point corresponding to the amount of bevel on the cutting-block. The sheared wire-section is then forced by the sides of the fork c1 over the anvil d2,thereby bending the wire into form and forcing it up into the throat of the fork, where it is held in the channels c5 by the anvil. Further motion of the guides causes cam c to engage lug d4 on the anvil-bar, rocking said bar on its pivot and retracting the anvil from the throat of the fork. On the continued movement of the slides the projecting finger on dog b2 engages the upper corner of frame 1, as shown in Fig. 2, and swings said dog out of contact with the upper end of slide c, which is thus disconnected from the reciprocating means as it reaches the lower limit of its stroke, with its lower face in juxtaposition to the canvas 7' and Slat s. Slide b continues its downward movement independently of slide c by virtue of the pin-and-slot connection between them, and the driving head b5, following the staple in the fork c4, strikes said staple a sharp blow, forcing it out of the throat of the fork through the canvas into the slat. On the reverse movement of the cross-head plunger b is first moved upward alone until the bottom of slot b4 engages the pin 019, in slide c. Meanwhile dog b2 has dropped back into position to engage the end of slide c. Slides b and c now move to the upper limit of their stroke and until c is arrested bya projection 12 on the frame engaging recess c9 in said slide. As the crank rotates to move the plungers downward the cam-groove e, engaging the bowl of lever e, rocks said lever and moves the pawl-plate e3 into the position shown in dotted lines in Fig. l, the pawls meanwhile slipping idly over the teeth of the gear c. As the plungers are retracted lever e9 is rocked in the opposite direction, ratchets c4 engage gear e and rotate it, thereby causing a corresponding rotation in gear cl3 and feed-rollers e and @14, feeding forward a new length of wire to form another staple. The tension of the feed can be adjusted by spring cls and the amount of feed regulated by the screw adjustment in rod e6.

Having thus described my invention, what I claim is 1. In a stapling-machine, the combination of a supporting-frame having a beveled-face guiding-groove in its face and a wire-guiding IIC slot terminatingin said beveled face, a re-A cessed cutting and forming slide operating in said guiding-groove, said slide having a cooperating beveled cutting-face and a grooved forming-fork, a driving-slide mounted in the recess in said forming-slide and having a rear- Wardly-projectin g ribbed hammer-headoperating in said grooved/fork, a pin-and-slot connection between said forming and driving slides, a pivoted dog carried by the drivingslide and adapted to be engaged with and disengaged from said forming-slide, an anvilbar pivoted in said frame and having a toe projecting in the path of said forming-fork, coperating lugs on the forming-fork and an vil-bar to retract the latter when the staple has been formed, and operating means con nected with the driving-slide whereby the several parts are successively operated to cut the Wire, form the staple and drive the latter when formed, substantially as described.

2. In a stapling-rnachine, the combination of a supporting-frame having a beveled-face guiding-groove, a recessed cutting and formforming-slide and anvil-bar to retract the latter from engagement with the fork, means to actuate the driving-slide, means to successively connect and disconnect the drivinr and forming slides, and a Wire-feeding device operated by the slideactuating means, substantially as described.

In testimony whereof I affixV my signature in presence of tWo Witnesses.

GEORGE W. 'PACKER Witnesses:

WM. A. DREFFEIN, MARVIN ORAMER.

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