US1103404A - Fastener forming and driving machine. - Google Patents

Description

S. E. DUNHAM.

FASTENER FORMING AND DRIVING MACHINE. APPLICATION FILED JAN. 8,-1908.

1,103,404. Patented July 14,1914.

4 SHEETS-SHEET 1.

WI Tl/ESSES Ill VEN T00 {:23 I EW/(WMW l TTOIiI/EY S. E. DUNHAM. FASTENER FORMING AND DRIVING MACHINE. APPLICATION FILED JAN. a, 1908.

1,103,404. Patented July 14, 1914.

4 SHEETS-SHEET 2. 4 0

III VEII 70R WITNESSES S. E. DUNHAM. FASTENER FORMING AND DRIVING MACHINE. APPLICATION FILED JAN. 8, 190a.

1,103,404. Patented July 14,1914.

4 SHEETB-SHEET 3. M /7 j 57 5| 54 I E g 3.9) U 5 f 5 53 f j 5 5 s "IVE/{T08 5 MM 5 BIZ m4 WWW 1 I TTOIMEV S. E. DUNHAM. FASTENER FORMING AND DRIVING MACHINE. APPLICATION FILED JAN. 5, 1908.

1,103,404. Patented July 14,1914.

4 SHEETS-SHEET 4.

'IIIIIIIIIIII IN VEN T0!) Arm/my SAMUEL E. Dunner/i; or new YORK, N. Y.

FAS'TENER FORMING Aim DRIVING MACHINE.

Specification of Letters Patent.

Application filed January 8, 1908. Serial No. 409,812.

To all whom, it may concern:

Be it known that I, SAMUEL E. DUNI-IAM, of the city of New York, borough of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Fastener Forming and Driving Machines, of which the following in a full, clear, and exact specificatiomsuch as will enable others skilled in the art towhich it appertains to make and use the same.

My invention relates to a mechanism for forming and driving fasteners or looks, particularly fasteners for joining two sections of wood to each other. i

It is especially useful in the manufacture of wooden articles requiring two or more sections of wood to be joined'together, for

- example, in the construction o-fboxes, packing cases, picture frames, etc.

It further relates especially to the construction of fasteners or locksfrom sections of sheet metal, which are automatically severed into the necessary length and simultaneously crimped at the ends so that the crimped or corrugated ends will, securely hold in the wood or other material into. which the fasteners are driven.

In its general organization, the apparatus embodies a plunger head which is periodically operated, manually or otherwise as desired, and which, by a peculiar gearing,im-

arts the necessary motion toa prime mover shaft which actuates successively devices for feeding the stock, preferably from a roll of metallic ribbon, a set of dies for corrugating the stock; a knife for cutting off thestock to the desired length; a plunger which drives the fastener or look thus formed and which is attached to, and moves with, the plunger head; and a set of holder jaws which receive the fastener as it is formed and hold it during the driving operation.

The apparatus may be constructed of any number of units, to form and drive one or more fasteners simultaneously. As here illustrated, it is shown with two units, although of course his may be varied indefinitely.

My invention involves various other fea tures of importance, all of which will be fully set forth hereinafter and particularly pointed out in the claims.

Reference is had to the accompanying drawings, which illustrate, as an example, one manner of practically embodying the principles of my invention, in which drawmgs,

Figure 1 is a'front elevation of the .machine with parts broken away; Fig. 2 is a 1 plan view from below the plunger head show- }ing particularly the stock rolls, the feeder devices and the prime mover side elevation of guide-wayin section; Fig. & is a fragmen- ,trating the feeder and the dies for corrugatging the stock; Fig. 5 is a vertical section on the line 5+5 of'Fig. 3, particularly illusby which the fastener is 6 is a sectional plan on 5; Fig. 7 is a detail of the and the plunger ,driven home; Fig. the line 6-6 of Fig. Erace cam which operates iratchet motion by whichthe prime mover lshaft is driven from the plunger head; Fig. 9 .is a section of the same view illustrating the manner of driving the :fastener to join together two sections of detail section of the fastener, showing pariticularly the sharpened edge thereof.

The machine in practice is provided with a suitable base, which supports two columns 15. The base is not shown in the drawings.

a guide-way 19 and in the guide-way are ad toward and from each other so that they may be suited to the position of the fastener forming and holding devices and, moving with the plunger head, serve to drive home the fasteners after they are formed, all of which will be fully set forth hereinafter. Attached to, and dependent from, the overshaft; Fig. 3 is av the machine with the feeder tary plan View wlth parts in section illus- Etrating the devices for holding the fastener,

the feed; Fig. Sis fa detail of the rack and pinion and the devices; Fig. 10 is a wood or other material; and Fig. 11 is av lWith the base is associated a treadle mech'a-i the plunger ingor overhanging arm 18. This arm has Patented July 14,'1914.; I

'justably mounted blocks 20, which carry the plungers 21. These plungers are adjustable hanging arm 18 of the plunger head is a rack 22. This'rack meshes with a pinion 23 loose o'n'the prime mover shaft 24, as shown best-in Figs.- 8 and 9. F astened to the pinv keyed to the prime mover shaft 24. The

' until "the plungers I is'i mparted to the shaft is mounted to rotate in boxes 28 secured to a frame 29 which projects horizon tally from the stanchions 15, and the arrangement of the pawls 26 and shouldered collar 2'1. issuchthat on thedownward motion of the plunger head, thepawls will run idly over the shouldered collar and upon theupward motion, the pawls move toward the shoulders on the collar, but do not contact therewith and drive the collar and shaft 2l clear the fastener forming-devices, atwhich time the pawls strike the shoulders on the collar and the collarand shaft 24 take up the rotationof the. pinion/23 and-disk 25, so that .inotion riine mover shaft, from which motion the astener' forming devices are operated. In this connection it will be seen that the shouldered collar27 is in the nature-of a ratchet, the ratchet having, however, two teeth and the parts being so dis posed that a suflicicnt lost motion occurs to allow the. plungers to clear the fastener forming devices on the uoward motion of the plunger head-before t e fastener forminodevices are set in operation, Secured to reachrod rotate with the prime mover shaft 24 is a race cam 30, inwhich operates the pin 31 (see .Fig. 7) of a yoke 32 secured to or formed integral with'a reach-rod 33. The

projects horizontally rearward (see Fig.12). andis joined to a cross-head bar 34. .This bar operates the feeder de vices.

The mechanism shown in the drawings is [adapted for forming two fastenerssimultaneously, and hence there are two feeder devices. Obviously, however, the cross-head bar could be extended .indefinitely and caused to operate any number of feeder devices, accor-din to the number of fasteners which the mac ine is'adapted to drive, in which case the mechanism is simply duplicated for each fastener. c t

, According to the structure shown in the drawings, each'end of the bar 34- carries a collar 35, and these collars have arms 36 projecting therefrom and pivoted to the feed dogs 37. These dogs are arranged in pairs and are themselves pivoted on a car'- rier' block 88, which is adapted to slide horizontally'in a guide 39 projecting from the frame 29. The stock is carried on reels 40, which are in number one for each fastener that the machine is adapted to form. The

stock in the form of steel ribbons wound jspirit' of my invention.

in a roll on the reels 40, and the feed dogs 37 work at opposite sides ofthe stock,pinohing the stock'between their points and feeding it forward with each forward motion of As the cross-head bar moves backward, it will be seen that the feed dogs will be turned on their pivots to move away from the stock and then the carrier block 38 will move backward in the slide-way 39. verse motionof the cross-head bar 34, how- .ever, the feed dogs will be returned to their rengagement with the stock, and then they ,3 will move forward with the carrier. block 38, the stock being gripped between the feed 5f dogs and being drawn forward by the same. jThe stock being V passed into the devices for stamping or core irugating'and cutting the fastener. As will 'jplicated for each fastener which the ma- ,fchine is adapted to form, In aduplex machine such as shown in the drawings, there Zing or die devices, and to avoid confusion. jonly' one willbeI specifically described, the

gother. I r i p As shown best in Fig. 4, the jaws of the die are two in number and are designated ;41 and 41", of which'the jaw 41 is stations gary, and 41 is themovable member. The istationary member is adjustably held in a part of the frame29 by'means of set screws 42, and the movable member 41 is adapted ito slide: in said frame toward and from the fstationary member. iblade for cutting ofi the stock, and this .fworks in the frame 29'against a ledger blade 544. These blades are placed immediately gahead of the jaws 41 and 41, so thatas the istock is fed by the dogs 37, it is projected gbetween and is corrugated by the jaws of the fdie, (the shear blade being withdrawn as gshown in Fig. 4) and immediately thereafter ithe shear blade advances, strokes over the tledger blade, and severs the stock into the gdesired length, as Fig. 4 illustrates. Itwill be apparent, however, that this order of first be reversed, without departing from the The movable member 41 of the die is actuated by a leverc45 isuitably fulcrumed on the frame at 45 and is driven by the cam 46 secured to the shaft i24, while the shear blade 43 is driven through alever 47, fulcrumed as at 47, and is actuated by a shaft 24, said lever 45 and die member 41" iand said lever 47 and shear blade 43 being returned to their normal or inoperative positions by the cams 48 and 48 respectively, although it is obvious that these return 'movements may be effected by means of the'cross-head bar 34 and its connections.

tbereadily understood, these devices are du;

iare two duplicate sets of cutting andstamp gcorruga'ting and then severing the stock may cam 48 on the prime mover Upon re gdescrlption ofone applying equally tothe V In this manner the stock is fed, and severed into lengths by a successive operations;

Referring now to Fig. 5, which shows suitable dies in vertical-sections, it will be seen that above these dies is a guide-way 49, forming part of the frame 29, and through this guide-way the before described plungers 21 are adapted to operate. Below the dies 41 and 41 are arranged the holder jaws 50 and 51, of which the jaw 50 is stationary and the jaw 51 is movable and held yieldingly in active position by means of the spring 52, the tension of which may be adjusted by the set screw 53. As shown in Fig. 6, the movable holder jaw 51 is suitably mounted in the frame 29 and guided by rods 54 although this is a detail of construction which is in no sense material. Below these holder jaws 50 and 51 is a work table 55. This is supported on the column 15 and may be adjusted by means of set screws 56 to adapt it to the position of the work. The work is indicated in Fig. 5 by the broken lines 57 WVhen the fastener is formed by the devices shown in Fig. 4, the plunger head should thereupon descend, either automatically in the event that the machine is of an automatic character, or by hand or foot power, in the event that the machine is adapted to be manuallyfdriven. Upon the descent of the plunger head, the plunger or plungers 21 move through the guide or guides 49, pass between the dies 41 and 41, engage the fastener and drive the same downwardpasses between the spring holder jaws 50 and 51, which yield to allow the motion of the fastener but which, nevertheless, press against the same with s'uflicient firmness to hold it true during the driving operation. The continuing motion of the plunger or plungers carries the fastener through the holder jaws 50 and 51, the jaw 51 yielding springs. corrugated series of rapidly to allow the plunger also to pass between the holder jaws and thereupon the fastener is driven into the work, which is indicated at 57 in Fig. 5.

Fig. 10 shows an example of the work, whichis theresupposed to consist of two sections of wood to be united by the fastener driven into them. Obviously the machine may operate on a great many different kinds of work, that illustrated in the figure being offered merely as an example.

The organized operation of the machine may therefore be traced as follows: The stock having been placed upon the reels 40 and the ends of the stock projected between the feed dogs 37 and the table 55 adjusted to the nature of the work which is placed thereon, upon the first downward motion of the plunger head-assuming no previous operation of the machinethe plungers will descend idly, and upon the return of the At this time the fastener plunger head, brought about by a spring or otherwise, the shaft 24 picks up the rotation of the pinion 23 through the medium ofthe pawl and ratchet devices heretofore described, and the first result of this motion is a backward motion of the feeding dogs, which is immediately followed by a forward motion of the feeding dogs, with the stock firmly held thereby, resulting in projecting the ends of the stock between the shear and ledger blades 43 and 44 and between the die jaws 41 and 41, whereupon the movable jaw 41 advances against the stationary jaw 41, corrugating the stock and immediately thereafter the shear blade strokes over the ledger blade, severing the stock as shown in I Fig. 4 and completing the fastener. 1 time the operation of the mechanism brought about by the upward motion of the plunger At this head ceases and the fasteners thus formed are ready to be driven home. The operator then brings about a descent of the plunger head, which drives the plungers first through the guides 49 thence between the dies 41 and 41, which by this time will have returned to their open position, the

plungers then engaging the fasteners and forcing them downward through the jaws 50 and 51 into the work. This completes a single operation of the mechanism, and the plunger head, with its plungers, thereupon returns to its elevated position, resulting inthe formation of a second fastener as above described.

Having thus described my invention, what ,I claim as new and desire to secure by Letters Patent of the United States is:

1. In a machine for corrugating, cutting up and driving strips of metal into wood, the combination of means acting to feed a metallic ribbon, opposing dies capable of acting on said metallic ribbon to corrugate the same, means for severing the metallic ribbon into lengths, means for driving the fastener thus formed edgewise into wood and opposing fiat faced jaws, of which one is yielding, said jaws being located below the dies and arranged to hold the fastener during the driving operation.

2. In a machine for making and driving corrugated sheet metal fasteners, the combination of corrugating dies for forming a fastener, a yielding means arranged to receive the fastener from the dies during the driving operation and a plunger operating between the dies and said yielding means to drive the fastener edgewise into wood.v

3. A fastener forming and driving mechanism, comprising dies for corrugating the fastener stock, of which dies one is movable, means for operating the movable die, shear and ledger blades juxtaposed to the dies, means for operating the shear blade for the purpose specified, a plunger acting between the dies and arranged to drive the fastener 4-. A fastener forming and driving mechanism, comprising dies for corrugating the one is movable,

fastener stock, of Which dies means for operating the movable die, shear and ledger blades juxtaposed to the dies, means for operating the shear blade for the purpose specified, a plunger acting between the dies and arranged to drive the fastener edgevvise into Wood, and yielding devices below the dies to receive and hold the fastener during the driving operation, such devices consisting in a stationary and a spring pressed jaw. i

5. A fastener forming and driving mechanism, comprising a plunger head, a plunger carried thereby and arranged to drive the fastener edgeWise into Wood, and devices for corrugating the fastener stock and cut ting the same'into suitable lengths to form a fastener, such .corrugating and cutting devices being actuated by the return motion of the plunger head.

6. A fastener. forming and driving mechanism, comprising a plunger head, a plunger carried thereby and arranged to drive the fastener edgeWise into Wood, fastener forming devices, and a gear for actuating the fastener forming devices from the motion of the plunger head, such gear being idle on the active stroke of the plunger and having delayed operation upon the return stroke of the plunger, to permit the plunger to clear the fastener the operation thereof.

7. In a machine for making and driving metal fasteners'edgevvise into Wood, the combination of devices for corrugating a strip of sheet metal, devices for cutting said strip into suitable lengths,- means for driving the fastener thus formed into wood, a feed device for feeding the strip of sheet metal to the corrugating, cutting and driving devices, said feed device comprising a slide, feed dogs pivoted thereon, and arranged to oppose each other in operation, and an actuating device having operative connection with said feeding devices.

8. In a fastener forming and driving mechanism, the combination of devices for feeding a. strip' of sheet metal, devices for corrugating said strip comprising dies juxtaposed to each other, of Which dies one is movable, a lever arm connected With the movable die to operate the same, a prime mover shaft, means carried by the prime mover shaft to actuate the lever arm, means :for actuating the prime mover shaft, devices for cutting the metal strip into suitable lengths to form a fastener, and means for driving the fastener edgeWise into Wood.

9. In a fastener forming and driving mechanism, the combination of devices for metal fasteners,

. lengths to form the, fastener home, the metal strip to and driving devices,

forming devices before feeding a strip of sheet metal, devices for corrugating said strip, devices for cutting said strip into suitable lengths to forma fastener, said devices comprising cutting blades juxtaposed to each other, of Which blades one is movable, a lever arm connected With the movable blade to operate the same,

a prlme mover shaft, means carried by the prime mover shaft to actuate the lever arm, means for actuating the prlme'mover shaft,

and means for driving the fasteners edge- Wise' into Wood.

10. In a machine for making and driving the combination of devices for corrugating a strip of sheet metal, devices for cutting said strip into suitable fasteners, means for driving feed devices for feeding the corrugating, cutting said feed devices comprlsing a reciprocating cross head, a sliding barrier, feed dogs pivotally connected to the cross head and also pivotally connected to the sliding carrier, .a prnne mover shaft,

means to impart intermittent reciprocating motion to the feed device from the prime mover shaft, a plunger head,

an'dmeans to actuate the prime mover shaft from the motion of the plunger head.

.11. In a machine for makingand driving fasteners, the combination of devices for feeding the fastener stock, a plunger head, a plunger carried thereby and arranged to drive the fastener home, the plunger head, a prime mover shaft, a

plnion loose thereon and meshed With the Track, pawl and ratchet devices for imparting intermittent rotary motion to the prime mover shaft through the pinion from the :motion of the plunger head,corrugating dies and cutting blades juxtaposed to each other and operated from the prime mover shaft, said feeding devices-comprising a slide, feed dogs pivoted thereto and arranged to oppose each other in operation, and means for actuating said feed device from the prime mover shaft. v 12. In a machine for making and driving sheet metal fasteners, the combination of devices for feeding the fastener stock, devices for formingthe fastener therefrom, a plunger head, a plunger carried thereby and arranged to drive the fastener home, a rack carried by the plunger head, a prime mover shaft, a pinion loose thereon and 'meshed With the rack, pavvl and ratchet devices for imparting through the pinion intermittent rotary motion to the prime mover shaftfrom the motion of the'plunger head, said feeding devices comprising a slide, feed dogs pivoted thereto and arranged to oppose each other. in operation, means for imparting intermittent reciprocating motion to the feed devices from the prime mover shaft, such means comprising a reach rod, a yoke connected a rackcarried 1 by with the reach rod and a race cam carried by the prime mover shaft, and means operatively connecting said yoke with said prime mover shaft.

13. In a machine for making and' driving corrugated sheet metal fasteners, the combination of a feed device'for feeding the fastener stock, said feed device comprising a sliding carrier, feed dogs pivotally connected thereto and arranged to oppose each other'in operation; corrugating dies juxtaposed to each other, of which dies one is movable, a lever arm connected to the movable die to operate the same; cutting blades juxtaposed to each other and to the corrugating dies of which blades one is movable, a lever arm connected to the movable blade to operate the same; a plunger head; a prime mover shaft; means carried by the prime mover shaft to actuate the lever arm for operating the corrugating dies and cutting blades respectively; means carried by the prime mover shaft to actuate the feed device; operative means connecting the prime mover shaft with the plunger head for actuating the prime mover shaft from the motion of the plunger head; and means for driving the fastener from the motion of the plunger head.

14:. In a fastener forming and driving mechanism, the combination of devices for feeding the stock and forming the fasteners, a plunger head, a plunger carried thereby, and arranged to drive the fastener home, a prime mover shaft, devices for actuating said stock feeding and fastener forming devices from the prime mover shaft and means for driving the prime mover shaft from the motion of the plunger head.

15. In a fastener forming and driving mechanism, the combination of devices for feeding the stock and forming the fastener, a plunger head, a plunger carried thereby, and arranged to drive the fastener home, a prime mover shaft, devices for actuating said stock feeding and fastener forming devices from the prime mover shaft, and means for driving the prime mover shaft from the motion of the plunger head, said means for driving the prime mover shaft being inactive on the active stroke of the plunger.

16. In a fastener forming and driving mechanism, the combination of devices for feeding the stock and forming the fastener, a plunger head, a plunger carried thereby, and arranged to drive the fastener home, a prime mover shaft, devices for actuating said stock feeding and fastener forming devices from the prime mover shaft, and means for driving the prime mover shaft from the motion of the plunger head, said means for driving the prime mover shaft being inactive on the active stroke of the plunger, and having delayed operation upon the return stroke, to permit the plunger to clear prime mover the fastener forming devices before the operation thereof.

17 In a fastener forming and driving mechanism, the combination of means for feeding the stock and forming a fastener, a plunger head, a plunger carried thereby, and arranged to drive the fastener, a prime mover shaft for actuating the stock feed and fastener forming means, a rack carried by thev plunger head, a pinion loose on the prime mover shaft and meshed with the rack, and pawl and ratchet devices for driving the shaft from the pinion upon the return motion of the plunger head.

18. In a machine of the class described, the combination of devices for feeding a sheet metal strip, dies for corrugating a section of the said strip, blades for cutting the strip into suitable lengths and thereby forming a fastener, means for holding the fastener in position'during the driving operation; a plunger head, a plunger carried thereby; a rack carried by the plunger head, a prime mover shaft, a pinion loose thereon and meshed with the rack, a carrier disk fastened to the pinion, a collar keyed to the prime mover shaft, pawl and ratchet devices on said carrier disk and said collar for imparting intermittent rotary motion to the prime mover shaft, and means on the prime mover shaft for imparting intermittent reciprocating motion to the feeding devices and to actuate the corrugating dies and cutting blades.

19. In a machine of the class described, the combination of a plunger head, a rack carried by the plunger head, a prime mover shaft,,a pinion loose on the prime mover shaft and meshed with the rack, a carrier disk fast to the pinion, a shouldered collar keyed to the prime mover shaft, the collar having ratchet teeth to be engaged by the pawl on the carrier disk and thereby impart intermittent rotary motion to the shaft through the pinion, from the motion of the plunger head, devices acting to feed a sheet metal strip, a yoke and reach rod to impart intermittent motion to said feeding devices, a race cam on the prime mover shaft to operate the yoke and reach rod; corrugating dies acting to corrugate a section of the sheet metal strip; cutting blades to sever the corrugated section and thus form a fastener; lever arms for operating the corrugating dies and cutting blades respectively; jaws for holding the fastener in position during the driving operation; cams on the prime mover shaft to operate the lever arms; and a plunger carried by the plunger head and arranged to drive the fastener into the material to be fastened.

20. In a machine for making and driving sheet metal fasteners, the combination of devices for feeding the stock, dies capable of acting on the stock to deflect and thus form curves, angles or corrugations there- 'name to this specification in the presence in, means for severing the stock into lengths, of two subscribing itnesses.

means for automatically driving the fas- SAMUEL E H M tener edgeWise into Wood, and devices for 5 yieldingly holding the fastener during the Witnesses: .7 driving operation. v r DUNNELLE VAN SOHAIGK, In testimony whereof I have signed my EUGENE S. MACDONALD,

Copies of this patent maybe obtained for five cents each, by addressing the. Commissioner of Patentl.

, Washington. I). c."

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