US9714A

US9714A - Machine fob making hook-headed spikes

Info

Publication number: US9714A
Authority: US
Publication date: 1853-05-10
Anticipated expiration: 1870-05-10

Description

J. H. SNYDER.

I Spike Machine. No. 9,714. Patented May 10, 1853.

2" SheetsSheet 1.

I 2 SheetS-Sheet 2. J. H. SNYDER. Spike Machine.

- Patented May 10, I853.

UNITED STATES PATENT OFFICE.

JOHN H. SNYDER, OF TROY, NEW YORK.

MACHINE FOR MAKING HOOK-HEADED SPIKES.

Specification of Letters Patent No. 9,714, dated May 10, 1853. c

To all whom it may concern:

Be it known that I, JOHN H. SNYDER, of Troy, New York, have invented a new and useful Machine for Making Hook-Headed Spikes, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification, in which- Figure 1, is a plan of the machine with the top plate removed. Fig. 2, a front elevation; Fig. 3, a vertical section taken at the line a a, Fig. 2; Figs. 4 and 5, elevations of the pairs of dies with the spike in two different stages of progress; Fig. 6, an elevation of the dies with the fixed heading lips, and with part of the former dies movable.

The same letters indicate like parts in all the figures.

In my said machine, the spikes are formed from rods of iron previously rolled to the required size, that is to a size equal in width to the intended width of the spike, and a little greater in thickness than the intended spike, and these are cut in the machine of appropriate lengths and presented to rotating dies by which they are rolled from the point toward the head to force the surplus metal to the end where the head is formed, that in swaging the head the metal may not be strained and weakened at the knuckle, where great strength is required. The metal is prevented from spreading laterally along the shank by making the rolling face of each die with a side flanch to overlap that edge of the other die which has no fianch.

The first part ofmy invention consists in making the face of one die, which I call the former, the reverse of the form of one face of a wedge pointed spike, that it may fit thereon when completed, and the face of the other die to correspond, in the rotation, with the other face of the spike, so that the spike shall be delivered from the machine in a straight form, instead of being frequently bent as would be the case if held only at opposite points by the two dies.

The second part of my invention consists in forming hook heads on spikes by rolling between dies from the point toward the head to force and accumulate the surplus metal at the end where the head is formed, and then bending and giving the required form to the head by a projecting lip on one of the dies, which by reason of its greater radius, will, in the rotation, bend over the metal and give the required form to the head without injuriously straining the iron, the accumulation at this end in forming the shank avoiding all undue strain, and hence leaving the required strength in the knuckle. The third part of my invention consists in making the projecting lip, for bending over and forming the head on the spike,

movable radially in the die or stock of the die, so that in the operation of rolling after the said lip comes in contact with the end increasing diameter of the opposite die, thus forming the head all on one side of the shank, the continued rotation of the dies and the greater radius of the heading lip having the effect gradually to flatten the projecting part of the head.

The fourth part of my invention consists in cutting off the required lengths from a rod fed in against a gage plate, by means of a sliding cutter, which, after cutting off the piece, carries it to its proper position before the rotating dies, and then returns to cut off another length and present it to a corresponding set of dies on the other side. And Ethe last part of my invention consists in combining with the rotating dies and sliding cutter and carrier, a slide or slides oper ated by a positive motion to force the rod in the bite of the dies at the appropriate time to insure the proper position of the rod in ;the dies, and thus insure the required quantity of metal for forming the head.

In the accompanying drawings a, repre sents the frame and b, 0, two horizontal parallel shafts which carry the rotating dies to be hereafter described. These two shafts are geared together by cog wheels d, cl, and e, e, at each end, and of equal diameter so that they shall rotate in opposite directions, and with equal velocities. They derive motion from some suitable driving power.

In front of the machine there is a plate f,

with a hole 9, of the size of the rod from which the spikes are to be made, so that the rod can be fed in by an attendant through the said hole, until the end strikes against the face of a gage plate h, which determines the length to be cut off at each operation for one spike. This gage plate should be made to leftand left to right, twice.

adjustable. The sides of the feed hole 9, are lined with steel or otherwise formed to constitute permanent shears to cut off the lengths required by means of a movable cutter 6, attached to a sliding plate 7', which moves horizontally in appropriate ways in the frame, the ends being properly rounded or formed to be acted upon by two cams is, is, one at each end of the shaft 0, so that at every rotation of this shaft the slide, with the cutter attached, reciprocates from right When the movable cutter is on one side the rod is fed in, and then the cutter moves to the opposite side, which cuts off one length, and carries it to one set of rotating dies-to be presently described-the rod is then again fed in, and on the return motion another length is cut OE and carried to the other set of rotating dies on the other side, and so on, four lengths being cut oif for each complete revolution, there being two sets of dies on each side.

On each side of the feed hole there is a slide Z, which moves at right angles to the slide of the movable cutter; it is drawn inward by a cam m, on the shaft 0,.and, when liberated by the cam, drawn back by a spring n, or by a weight, as the equivalent thereof.

Each slide has a shoulder which bears against the end of the length of rod after it has been cut and carried by the movable cutter, and moves itinward until it is caught by the rotating dies, and then the slide moves back to receive another. The side of this slide guides the rod so as to present it to the dies in a proper direction, and at the proper time. In this way the'lengths of rod are cut ofl, carried right and left, and moved inward to be caught by the rotating dies at the proper time.

There are four rotating forming dies 0, 0,

' 0, 0, and four working dies 77, p, p, 7), making four pairs, let into recesses in and secured to four wheels 9, g, 1" 7' two on the main shaft 7), and the other two on the other shaft 0. As all the four pairs of dies are alike the description of one pair will be sufficient to understand the drawings which represent four.

Each pair of dies consists of what I call a former 0, on a wheel 9, of the shaft 2), and a r worker 79, on a wheel 1", of the shaft 0.

The former 0, is a section of steel or chilled cast iron, with the face equal in thickness to the breadth of the intended spike, and a little longer. It has a projecting flange s, on one side which overlaps one side of the other die, or worker, to prevent the rod from spreading out laterally on that side, and in like manner the worker has a like flange s, which overlaps the other side of the former for the same purpose, so that the rod can only spread to the extent of the space between the faces of the former and worker and all beyond that must be forced in the direction of the length of the rod.

From the point 1, to 2, in the direction of the arrowsee Figs. 4 and 5-the face of the former is concentric. From 2, to 3, it runs in slightly toward the axis in nearly a straight or tangent line, and from 3 to 4, it runs in a straight line and at an angle with the sect-ion from 2 to 3, so that it shall be in form the reverse of one side of a spike from point to head as shown in'Figs. 4 and 5. This face is such that when a spike lies on it, the outer face of the spike shall be nearly concentric. The face t, of the worker 79, is such that assuming a formed spike to be in place and fitting on the face of the former, and the two dies to be set in motion every part of the outer surface of the spike will be touched by the face of the worker, from'one end to the'other. As the spike, when formed, lies on, and ltouches every part of the face of the former, and from the point of the spike toward the head every part of the surface of the worker is of greater radius than the former,

and therefore traveling faster, it will follow that the spikes formed by being rolled fbetween them will be formed and delivered ,straight, instead of being bent as would often be the case if the inequality in the ithickness of the spike was equally divided g-between the two dies, and the two faces Eonly touched the spike at two opposite points and moved with equal velocities. iAs the face of the worker travels faster *Emore of a drawing action on the rod, the jmain object of which is to gather and acicumulate the surplus metal toward the end ffwhere the knuckle of the head is to be Zformed, so that the head may be bent over fwithout injuriously straining and weakening the iron where strength is required. At 'fthe point 4, the former is cut away to make recess u, the face of which, next the rolliing face, is made in form the reverse of the ,under part of the head of the intended Espike.

, The general form of the face of the worker p has already been described.

As the spike, when being formed, lies 1(until discharged) on the face of the former, and the outer face of the shank of the spike represents a tangent line, the face 50f the worker toward the end gradually lruns in toward the axis, thus gradually losing the preponderance of radius which it had, so that it ceases to draw the iron more than the other die, after having accumulated the surplus where the knuckle or head of the :than the face of the former, it will have' and just at the end of the said die. The face of this lip is in form nearly the reverse of the head of a spike.

After the dies have rotated to a sufficient extent to have nearly completed the shank of the spike, the lip w, or face of the bar 00, comes in contact with that end of the rod which is to form the head, and holds it, so that for a short distance it moves in a line concentric with the axis of the worker die, and at the same time the shank of the spike is carried toward the axis of the worker die, and from the axis of the former die, by reason of the gradually decreasing diameter of the one and the increasing diameter of the other. This bends over the head of the spike, which is finished by the face of the heading bar or lip, which, being of greater radius than that part of the former die in which the head is formed, has a rolling action to complete the bending of the head, and giving the required form thereto. After the dies have ceased to grip the spike the continued rotation causes the lip or face of the heading bar to throw the spike out of the former die.

As there are two sets of dies on each wheel the bar 00, extends entirely through so that its opposite end is formed in like manner, and bears the same relation to the other pair of dies and performs the same operation as the end first above described.

During the operation the bar slides in its mortise in the wheel, and before one end begins to act on a spike it is pushed out to the required distance by means of a face y, on the back of the machine against which the opposite end of the bar strikes in the rotation.

The moment a spike has been formed and delivered another is presented to the bite of the dies to repeat the operation.

If desired, the sliding bar at, can be depensed with, by making the lip 10, for bending and shaping the outer surface of the head, by a permanent projection on the end of the worker die, but I prefer to use the sliding bar as a more perfect form can be given to the head of the spike, and I would further state that I have contemplted the making of that part of the former die in which the under face of the head is shaped, in the end of a sliding bar adapted to slide in a mortise in the wheel which carries the formes dies. The bar being made of sufficient length to pass entirely through, so that the one bar will answer the two sets of former dies. When thus made movable the bar should have two stud or wrist pins projecting from its face one near each end, and adapted to work in a cam groove connected with the frame and so situated that the moment the head has been formed on a spike, the bar shall be drawn inward to leave the spike and permit the heading lip to pass around. This movable bar I prefer to use when I dispense with the sliding heading bar so, and use the permanet heading lip, although, if desired, the two sliding bars can be used in connection, in one and the same machine.

Vhat I claim as my invention and desire to secure by Letters Patent is 1. Rolling wedge pointed spikes between rotating dies so formed, that the face of one shall be the reverse of one face of the spike when formed, and the face of the other die to correspond, in the rotation, with the other face of the spike, substantially as specified.

2. I also claim forming hook heads on spikes by rolling from the point toward the head, to force the surplus metal toward the head, and then bending and giving the form required by a lip on one of the dies projecting beyond its face, so that it shall have an increased motion by reason of its greater radius to give the required form, substan- "tially as specified.

3. I also claim in combination with the dies for rolling the shank of the spike, making the heading lip for forming the head,

movable, by forming the said lip on the end of a bar adapted to slide in the stock of the die, substantially as and for the purpose specified.

4. I also claim in combination with the rotating dies, the employment of the slidingcutter and carrier, substantially as specified, for cutting from a rod, the required lengths of rod, and carrying them to the rotating dies, substantially as specified.

5. And finally I claim in combination with the rotating dies, the slides for presenting and forcing the ends of the rod into the rotating dies, to insure the proper position of the rod in the dies, substantially as speclfied, for if the rod be not gripped by the dies at the proper time, there will be .either too much or too little metal for the forming of the head.

JOHN H. SNYDER.

WVitnesses:

WM. W. BISHOP, ALEX. PORTER BROWNE.