US397022A - Wire-nail machine - Google Patents

Description

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-(No Model.) l A E.' B. PARKEURST.

WIRE NAIL MACHINE. I

Patented'Jan. Z9, 1889.

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' E. B. PARKHURST.

WIRE NAIL MACHINE. K No. 397,022. 4Patented Jan. 29, 1889.

iNTTnn STATES ATnNT Trice.

EDIVARD B'. PARIIHURST, OF VOBURN, MASSACHUSETTS.

VVlRE-NAIL. MACHINE.

SPECIFICATION forming part of Letters Patent No. 397,022, dated January 29, 1889.

Application filed December 20, 1886. Serial No. 222,060. (No model.)

To aZZ whom t may concern:

Be it known that I, EDWARD B. PARKHURsT, of lVoburn, county of Middlesex, State of Massachusetts, have invented certain new and useful Improvements in fire-Nail Machines, of which the following is a specification, reference being had to the drawings aecompanying and forming a part hereof, in which- Figure l is a side elevation of part of a wire-nail machine, showing the essential operating parts with my improvements applied. Fig. 2 is a top view of the same, partially broken away. Fig. 3 is a section on line Qc oc, Fig. l. Fig. 4 is a perspective of one of the nail-dies, showing its operative face, as also the mechanism for holding the section of wire while it is being operated upon.

My invention is designed to be applied to wire-nail machines of the kind shown and described in Letters Patent to N. C. Lewis, No. 328,236, dated October 13, 1885, and in the accompanying drawings I have shown it as applied to such a machine, showing only such parts of the said Lewis machine as I deemed necessary to a clear understanding of the operation of my devices. In the following description I shall confine myself to my invention, referring only to the parts of said Lewis machine when necessary to an understanding of my devices.

In wire-nail machines such as are shown and described in said patent to Lewis great speed of operation is desirable and may be easily attained, provided the sections of wire are fed into the nail-dies and the formed nails cleared therefrom with certainty and speed. In the said Lewis machine, however, gravity is depended upon, and the section of wire after being cnt is allowed to drop into position between the dies, and the formed nails are allowed to drop from the die by gravity. Vith a set of dies designed to operate with sufficient speed to make four hundred or more nails per minute it will be readily seen that gravity could not be depended upon. to effect the feeding operation; and my invention consists in feeding and clearing mechanism arranged to be operated positively, which takes the section of wire as soon as it has been severed, moves it into eX- act position between the nail-dies, and holds it there while the dies are operated to form the nail, and after the nail is formed acts to clear itfrom the dies, all as hereinafter set forth.

I will. describe my invention, using letters of reference to the accompanying drawings.

A represents the frame of the machine. On the central portion of this frame (shown in section at B, Fig. l) are secured the dies a, one at either side of this central portion, B, of the frame. As each of these dies is one of a set, one set being at one end of the machine and the other at the opposite end, and both being identical in construction and operation, Iwill describe only one set of the dies and my improvement applied thereto. In the drawings, Figs. l and 2, I deemed it best to show my improvement as applied to both ends of the machine, in order that the operation as a whole might be more clearly understood.

The die a is stationary and acts in conjunction with the movable part of die h, which is set in a sliding block or head, d, arranged to slide in grooves in the frame and to be reciprocated by a toggle or other suitable mechanism, as shown in the Lewis machine.

The length of wire e from which the nails are made is fed through a guide, f, which is provided at its inner end with a stationary cutter which acts in conj unetion with a movable cutter, g, Fig. 3, to severa section of wire sufficient in length to form two nails. As al ready described, this section in the Lewis machine is allowed to drop into position between the dies. I have arranged directly over the dies a plate, C, Fig. 4, bolted, as shown, to a block, C', which rests on the frame over the stationary die. The plate C is provided at the end nearest the face of the die with a downwardly-projecting lip or iiange, h, behind which a space is left for the reception of the wire when it is fed forward, as shown in Fig. 4. This space is provided with a iiaring mouth, fi, which acts to receive and guide the wire when it is fed into the same. The space behind the flange h is open downwardly toward the dies, and to prevent the wire from falling or getting out of line when it is cut two spring-impelled bolts, j, are set in holes in the block C and in contact rearwardly with spring n, Fig. 2, which acts to press them forward against the flange h. The upper for- IOO ward edges ol' these bolts j are beveled, so that when the section ot' wire is seized and drawn downward toward the dies the bolts will wedge back against the pressure of spring' a and allow the wire topass. Below these bolts are set the arms 7.', which are part of bell-crank levers, (shown in Fig. 1,) pivoted at the center or elbow, as there shown, in reces es cut to receive them partly in the face ot' the die d 1o and partly in the under side ot' the block rlhe rearwardly-projectiug arms ot the levers 7,-. are in contact with pins 7, set vertically in the block C and plate C, (see Fig. l.) and pressed d ownward by the leaf-sp ring m, which rests on top ot' the plate (I and is held in place by bolt l), which holds the plate (l in place on the frame. the arm 7i' to be pressed backward tlnsh with the face ol" the die against the resistl'tnee ot 2o sjiring m. lVhen the section oli' wire being pulled downward into position to be operated upon by the dies, it comes against the arms 7.', pressing them in, and when it has passed the lower ends oli' the arms the arms snap (nitwardly directly over the wire, thus holding it inV place and preventing any upward movement. of it which might result from the return movement ol the arms p or from any other cause. The wire when in this 5o position directly opposite the tacc ot the dies supported from beneath by the rods o, which lie in holes eut through the dies and thrtnigh the partl ot' the frame, one end of the rod serving f'or one set ol dies and the 3 5 other end serving for the other set of dies at the opposite end ot' the machine, as will be understood by reference to Fig. l.' The section ol:` wire when brought down into position between the dies rests on the projeeti ng ends 4o of rods o o and between these rods and the arms 7:. The advance ot the movable die t0 Aform the nail moves the rods o o inwardly until their ends are tlush with the tace ot' the die, eausingthe opposite ends ol the rods to project beyond the 'l'aee ot' the stationary die at the opposite end ot' the machine, so that the ends ot the rods o act alternately to support the wire at opposite ends ol' the machine. Alter the nail has been formed and 5o the dies begin to separate the ends of the rods are not moved outwardly to receive the next piece ol' wire until the clearing device has operated to clear the tornied nail Afrom the dies.

The mechanism which receives and holds the section of wire after it has been cut having been described, it now remains to refer to the device which operates to move the wire from the position in which it is cnt to the dies 6o and then to move theformed nailclear of the dies. This mechanism cons `ts ot' two movable arms lor each pair oli' dies, each of said arms being provided with two notches or hooks adapted to receive the wire. These 55 arms p are set vertically, their upper ends being received in notches q, cnt in the tlange y i i 71` oi'l the block C, as also in the notches yr, cut

This arrangementol? parts allows i vertically across the face ol' the fixed die d. (See Fig. 4.) The lower ends otl the armsp are set in sockets in the block s, Fig. 3, which is pivot-ed to one end ot the lever E, the pivot in the end ot' the lever E being reeeivedin a slot, t, Fig. l, in the block. The arms p slide vertieally in slots in the pivoted guide or rocker shaft In, which is mounted between downwardly-jirojecting portions of the frame A, (see Fig. 3,) so as to permit of its oscillation. A spring, s', l `ig. l, secured at one end to the block s and at the other to a point on lever E, acts to hohl the block s toward the pivot olf lever E, and conseqm-mtly to throw the npper hooked ends otl the arms toward the fixed die n, thus throwing the upper hook ot' the arm over the section of wire which has been cut olli'. rlhe upper ends oll the arms p are beveled and shaped as shown at fr, Fig. l, so that as the arms are slid upwardly to Seize the wire this beveled upper end, c, will come in contact with the wire and will prevent the arm l'rom catching in its upward movement and enable it to ride over the wire against the tension ol' the spring s', which, as soon as the hook has passed the wire, will act to throw the upper end ol the arm against the wire, carrying the hook over the wire and in position to pull the wire. down bi-ftween t-he dies when the arms are given their downward movement. lhe clwck-screws fw, Fig. l,set in the blocks s', serve to hold the arms p securely in the blocksand permitot' the adjustment of the arms relatively to the position ot' the wire, which is to be moved dmvnward to the dies. The lower notches on the arms p strike the formed nail as soon as the dies are opened, and insure its moven'lent out ot.' the dies bel-ore the succeeding section oi. wire is placed between them. The vertical reciprocation of the arms p is readily elfeCtGfl by connecting the outer end of the lever E with the large lever c, which actuates the nail-dies by means of a pivoted link, Z, which may be provided with a right and left hand screw, as shown in Fig. l, for the j iurpose of adjusting its length, and thus adjusting the movement of the arms Ap.

The operation of my device is as follows: The continuous wire 'is fed toi-ward into position directly over the dies. A section suieient to till the dies once and form two nails is then eut ell. until the arms. p move upward and seize itin the hooks at their upper ends. lVhile the arms are moving upward, the dies are coming together to form the nails. As soon as the dies begin to open, the arms p move downward, carrying a section of wire with them, forcing back the bolts j and arms 7n, which snap over the wire as it passes, and depositing it on the projecting ends oli the rods o, the lower notches in the arms p having previously cleared the jneeedingnails from the dies and the rods 0 having moved outward to receive the section of wire which the hooks i are bringing down into position. Vhile these This section is held securely IOO IIO

movements are taking place at one end of the machine, exactly the reverse movements are taking place at the opposite end, vwhich is actuated, as will be seen, by the opposite end of the centrally-pivoted large lever c.

That I claim isl. A wire-nailmachine having a positivelyaeting device, as arms p, provided with suitable operating mechanism, whereby the section of wire is seized in the position in which it is cut and moved into position to be acted upon by the dies, substantially as shown and described.

2. In a wire-nail machine in which a section of wire of proper length is cut at one point and formed into nails at another, a pair of positively-reciprocated arms having suitable operating mechanism and provided with notches for the reception of the nail-wire, in combination with a device, as the iiange 7L and spring-impelled bolt-s j, for holding the section securely in the position in which itis cut until it is seized and carried downward by the hooks on arms p, substantially as set forth.

3. In a wire-nail machine, the combination, with the nail-forming dies, of the verticallymoving arms p, sliding in holes in the rockershaft u and beveled, as at 1', at their upper ends, and secured by sliding pivot and spring s to their actuating-lever E, whereby as said arms are moved upward in line with the wire which is next to be fed to the dies the upper end will move backward out of line ofthe wire and allow the hook to pass above it, all as set forth.

4. In a wire-nail machine, the combination, with the nail-dies, of a vertically moving notched arm and its operating mechanism, the

notch in said arm moving across the face of the dies in line with the nail and clearing it therefrom, substantially as set forth.

5. In a wire-nail machine, the combination, with the nail-dies, of the rods and springactuated arms 7U', set in recesses in the face of one of the dies, for the purposes and substantially as shown and described.

G. In a wire-nail machine, the plate C, provided at its front edge over the face of the fixed die with a downwardly-open recess to receive the length of wire as it is fed into the machine, in combination with the springactuated bolts/j, whereby the section of wire is held substantially in the position in which it is cut until seized by the mechanism by which it is carried in the dies, substantially as set forth.

7. In a wire-nail machine, the combination, with the nail-dies, of the hooked feeding-arms and their actuating mechanism, the rods 0, arms 7:1, bolts j, and flanges 71 substantially as shown and described.

S. In a wire-nail machine, the combination, with the nail-dies, of the vertically-moving positively-actuated hooked feeding-arms p, adjustably secured to their actuating-levers by blocks S and check-screws w, whereby the height of movement of the arms p may be regulated, for the purposes and substantially as set forth.

9. In a wire-nail machine, the combination, with the nail-dies, of reciprocating feedingarms, as p,their actuating-levers E and c, and the adjustable coimecting-iod e', whereby the throw of said feeding-arms maybe accurately adjusted, all as set forth.

EDlVARI) ll. PARKHURST.

lVitnesses:

WM. A. illAcLEoD, ROBERT WALLACE.

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