US716030A - Nail-making machine. - Google Patents

Description

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. J. H. GUETSCHE.

NAIL MAKING MACHINE.

(Application led Oct. 5, i899. Renewed Apr. 26, 1902.) (no Model.) 4 sheets-sheet's.

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' J. H. GOETSHE.l

NAIL MAKING MACHINE. (Application led Qcs. 5, 1899. :Renewed Apr. 26, 1902.)

(No Model.)

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ArnNT OFFICE.

J OI-INII. GOETSCI-IE, OF SAN FRANCISCO, CALIFORNIA.

NAIL-MAKING MACHINE.

SPECIFICATION forming partA of Letters Patent No. 716,030, dated December 16, 1902. Application iiled October 5, 1899. Renewed April 26, 1902. Serial No. 104,904. (No model.)

To aZ/ whom, t may concern;

Be itknownthat', JOHN'H. GoETscHn, acitizen of the United States, residing at San Francisco, in the county of San Francisco and State of California., have invented certain new and useful Improvements in NailvMaking Machines, of which the following is a specification. Y

My invention Vrelates to improvements in nail-making machines; and the object of my invention is to provide a machine of this character which shall beveconomical in construction and operation'and easy to adjust and repair- In particular my invention comprises irnprovements in the means for removing the nail when cut, in themeans for transmitting the power, in theadj ustments of the cutters, in the application of the power to the cutters, in the dies, inthe holders therefor and means for operating'th'e same, in the feed mechanism, and in the feed-clamp. Y

In the accompanying drawings, Figure 1 is a top plan view of the machine. Fig. 2 is a vertical section on the line a o. of Fig. 1. Fig. 3 is a similar section outhe line b b looking in the direction of the arrow x. Fig. 4. is a similar sectionfon vtheJ line b b looking in the direction of the arrow y. Fig. 5 is a partial longitudinal vertical section through the slot which controls the head er and through the center'V of one of the dies. Fig. 6 is a transverse Vvertical section through the centers of the header-guide. Fig. 7 is a transverse vertical section through the arm from theheader-slide. Fig. 8 is a detail of the cutter-cam; Fig. 9, of the die; Fig. 10, of the die-cam; Fig. 11,'of the feed mechanism. Fig. 12 is an enlarged plan of a portion of the machine. Fig. 13 is an enlarged vertical section on the line g g of Fig. 15. Fig. 14 is a detail of a cutter. Fig. 15 is a rear view of the cutter-slide, the clamp-plate being removed. Fig. 16 is a vertical section on the line h h of Fig. 12. Fig. 17 is a horizontal section of the die-slide. Fig. 18 is an enlarged'top plan view 'of the feed-clamp, and Fig. 19 is an end view of one of the clamp-l ing-jaws.

1 is the table of the machine, mounted on suitable standards .2. In two pairs of boxes 3 erected on said table is mounted the main driving-shaft 4, carrying the usual liy-wheel and. fast and loose pulley. Upon said shaft between each pair of boxes is mounted an eccentric 5 for reciprocating the header, and alternating with the pairs of boxes are likewise mounted on said shaft the three bevelgears 6 for operating the die-cutters and the `die for gripping the Wire while heading. The

strap 7 of each eccentric 5 is connected by a link 8 with a shaft 9, joiningthe forks 10 of the U-shaped header-slide 11, sliding in undercut bearings in a swiveled guide 12. Said guide 12 works on centers 13,screwed into standards 14C. Said standards are split upward from their base, as shown at 15, and the two parts are adapted to be drawn together by a screw 16, thereby clamping the centers 13 securelyin position. Asthe header-slide 11 is reciprocated by the eccentric 5 the guide l2, and therefore also the slide 11, moving therein, is rocked vertically by the movement in a cam-slot 17 in a vertical guide 18, secured on the table, of a roller 19 on an arm 20, screwed into the side of the slide 11 and extending through a slot 21 in the side of the guide 12. The guide 18 is secured adjustably by means of vertical bolts 22,-passing through slots 23 .in the guide and screwed into holes 24 in an upward support 25, stationarily secured to the table. The slot 17 has a forward low dwell 26 and a rearward high dwell 27, separated by aninclvine 28, and

thus as the'header-slide 11'moves Vbackward it is also tilted upward and the header 29 is moved out of the way of the nail as it is fed through the gripping-dies to be cut olf by the cutters, and as the header-slide is moved forward to head the next nail the header 29 drops upon the last nail cut and insures its dropping off. The guide 18 can by means of its adjustable attachment be moved nearer the dies when making short nails.

In the header-'slide 11 is inserted the headerstock 30 and in the end of the header-stock is carried the headerproper, 29. Said stock 30 has a threaded portion 32, and thereon issecured the adjusting-nut 33, which abuts against the end of the slide and communicates to the slide the back thrust of the header. By moving the nut along the stock the position of theheader maybe adjusted as desired. The stock is secured in position against IOO outward movement by means of the setscrew 34.

The three bevel-gears 6 on the main shaft 4 drive bevel-gears 36 on shafts 37 38, extending at right angles to the shaft 4 and mounted in boxes 39 on the table. These shafts carry the cams 41 for operating the cutters. The outer shafts 37 also carry the cams 42 for operating the gripping-dies, and the middle shaft 38 also carries a cam 43 for operating the feed mechanism. Each cam 41 works against a roller 44, mounted in standards 45 upon a cutter-slide 46, sliding in an undercut bearing 47, secured on the table. Upon the cutter-slide 46 is mounted the cutterblock 48. Said block is adjustable vertically on said slide by means of the wedges 49 50 between said slide and block, said wedges being movable one upon the other by means ofa screw 51. Said screw has a collar 52 near its head 53, so that there is formed an annular groove 54, which engages a plate 55 on the front side of the wedge 50 and draws out said wedge 50 when the screw is un- 'screwed The block 48 is adjusted transversely by means of a screw 56, screwed laterally into said block and having its head engaged by a fork 57 of an arm 58, secured to the side of a standard 45.

In a longitudinal recess in the front wall of the cutter-block is laid the cutter 59, and said cutter is clamped down in position by means of a clamp-piece 60, having a rib 6l fitting in a groove in the upper surface of the block. The front edge of the clamppiece rests upon the cutter 59 and holds it rmly in position, and the clamp-piece 60 is held down by means of a vertical bolt 62, passingr through a transversely elongated slot 63 in the block and having a nut 64 on its end. The upper end of the bolt 62 passes through a slot 65 in the clamp-piece 60, said slot being open-ended to permit said piece to be quickly removed when desired. To provide for wear of the cutter, itis adjusted longitndinally by means of a wedge 66 inserted in a vertical groove 67 behind the end of the cutter and secured to the block 48 by a screw 68.

An important feature of my invention resides in the shape of the cam 41, which actuates the cutter. The bevelgear 36 is twice the diameter of the bevel-gear 6 and makes one-half a revolution to the others one. The cam 41 is therefore constructed to have two working surfaces 70, so as to cnt off two nails in each revolution of the shaft 37 or in two revolutions of the shaft 4. The inclination of the working surfaces 70 to the tangential is comparatively small, so as to give a slow and powerful working pressure, whereas the inclinations of the forward and return idle surface of the cam are comparatively large, so as to give a quick forward and return movement. In addition there is provided a narrow surface 73 immediately following the working surface 70, which surface 73 is cylindrical and holds the cutters momentarily in the position they occupied when cutting the wire. This makes a surer cut and, moreover, wears better, as a sharp corner at this point would wear o more quickly.

In order to separate the slides 46, there are provided bent springs 138, having bearings against the bolt-heads 139, which secure the base of the standards 14 to the table.

The middle shaft 38 has two of the cams 41 secured thereon at right angles to each other, and the two cams 41, secured one on each of the outer shafts 37, are likewise at right angles to each other. This arrangement is for the purpose of providing a double-acting machine in which two wires shall be fed at the same time, each operation on each wire occurring midway between the like successive operations on the other wire. In order to accommodate the two cams 41 on the shaft 38 and maintain the two pairs of cutters in alinement with each other, the two pairs of rollers 44 are arranged the one pair slightly in advance of the other pair.

Each cam 42 on an outer shaft 37 works against a roller in a slide 81, sliding in a vertical guide 82. Said guide 82 has a dovetailed piece 83, which is inserted in a vertical channel 84, having beveled sides 85 in a standard 86 of the table. A wedge 87 is inserted between one of the sides of the dovetailed piece 83 and one of the beveled sides 85, and by drawing forward said wedge 87 by means of a screw 88, screwed through said standard 86, the wedge 87 serves to clamp the guide 82 firmly in position. In the inner end of the slide 81 is secured a die 90. Said die 90 is secured by means of a screw 91, having a head 92 let into a socket in the face of the die, said screw 91 being screwed through said die and then through an aperture 94 in said slide, and on said end is a nut 95 in a recess 96 in the rear side of said slide. The die 90 carries on its periphery a number of grooves 97, which grip the wire in conjunction with other grooves formed on a'second die 98, precisely similar to the die and in like manner mounted in the guide 82. This die 98 is, however, adjustably mounted in said guide and is supported in its adjusted position by means of a slide 99, moved by a set-screw 100. In order to separate the dies 90 98, there are provided coiled springs 101, working in sockets in opposing faces of the slide 81, supporting the die 90, and the corresponding portion of the guide 82, which supports the die 98. It will be understood that in each half of the machine only one die, the outer one, 90, is withdrawn after the operation of gripping, the other die 98 being stationary.

The cam 42 of the shaft 37, which operates the gripping-die, has two main working surfaces 104 and two idle surfaces 105. A portion 106 of each working surface l04is slightly raised. These surfaces 106 are in operation when the head is being formed, and the object of having the surface 106 slightly raised IIO ` now be described.

The shaft 38 carries a cam-wheel 43, operating arms 109 on slides 110 on extensions 111 from the table of the machine. It will readily be seen that the cani gives opposite reciprocatory movements to the arms 109. Upon each side are mounted four horizontal rollers and four vertical rollers,between which the wire passes for the operation of straightening. Of the four horizontal rollers one,112, is carried by a spring-resisted slide 113, operated by a cam-lever 114. This permits of a rapid opening of the rollers to put in the wire. A similar construction is provided for the vertical rollers. The wire passes through the guide 115 to the clamp mechanism. This comprises two spring-actuated pivoted arms 116, having gear-teeth 117 working with each other, so that the arms move in unison, and having jaws 118. When the jaws move back with the slide, they are automatically opened by the action of the wire, which is held bythe gripping-dies; but when the slide moves forward the jaws automatically close on the Wire and feed it forward. An eccentric 119 is used to open the jaws when desired.

I claim- 1. In anail-making machine, the combination of a driving-shaft, an eccentric mounted thereon, a reciprocating header, a link pivotally connecting said header with said eccentric whereby said header receives its reciprocations from said eccentric,a vertically-swim ging guide in which said header reciprocates and with which it swings, and means for ver-l tically swinging said guide and header, substantially as described.

2. In a nail-making machine, the combination of a main driving-shaft, an eccentric mounted thereon, a header reciprocated by said eccentric, a swiveled guide for said header, an arm extending from said header, a guide provided with a cam-slot in which said arm moves as said header oscillates, and means for adjusting the'position of the camslot relative to said arm, substantially as described.

3. In a nail-making machine the combination of a cutter-slide, a block therein having a longitudinal recess, a cutter in said recess, a wedge interposed between the end of the cutter and a ixed position of the slide, whereby said cutter may be adjusted longitudinally, and maintained in position independently of the block, a clamp-plate on the top of the block, bearing upon the cutter,

a bolt for drawing the clamp plate down on the block, and a pair of wedges interposed between the slides and block and provided with a screw for adjusting their relative positions to adjust the block vertically, said plate, block, wedge, and slide being apertured to admit the passage therethrough of the bolt, substantially as described.

4. In a nail-making machine, the combination of a main driving-shaft, three shafts driven thereby at right angles thereto, two cams on the middle shaft of the three, at right angles to each other, cams on the outer shafts coacting with the cams on the middle shaft and also at right angles to each other, and two pairs of cutter-slides, each pair operated by a cam on the middle shaft and-its opposite cam on an outer shaft, substantially as described.

5. In a nail-making machine, in combination with a die for gripping the wire, a cam for operating said die, said cam having an idle surface, a circular concentric working surface following said idle surface and sufficiently high to prevent withdrawal of the wire with the feeding mechanism,and a higher circular concentric working surface immediately following the former working surface and said second working surface being followed by an idle surface with an abrupt step therefrom and below the level of the first working surface, substantially as described.

6. In a feed mechanism for a nail-making machine, the combination of a reciprocating device, arms both freely pivoted thereon having their free ends arranged adjacent to each other and grooved to contain thewire fed thereby, each grooved portion swinging -in both directions equally with its arm, a spring IOO for resisting the divergence of said arms, and

means independent of said wire for constraining said arms to swing in unison with each other, substantially as described.

7. In a nail-making machine, the combina- J. H. GoE'rsci-IE.

Witnesses:

M. R. DANIELS, ZUA A. DANIELS.

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