US382928A - Machine for making horseshoe-nails - Google Patents

Description

(No'Model.)

H. A. WI'LLS.

MACHINE POR MAKING HORSESHOE NAILS. No. 382,928.

Patented May l5, 1888.

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N. PiTEns. Phnlmmmgmpner, washmgmn, D. c,

UNITED STATES PATENT OFFICEo -HARRY A. NVILLS, OF CHICAGO, ILLINOIS.

VICHINE FORMAKING HORSESHOE-NAILS.

SPECIFICATION forming part of Letters Patent No. 382,928, dated May l5, 18188.

Application iilel December 2, 1887. Serial No. 256,885.

To all whom it may concern:

Be it known that I, HARRY A. WlLLs, a

citizen of the United States, residing at Chibed B', and adjustable thereon by means of cago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Machines for Cutting Horseshoe-Nails, which is fully set forth in the following specication, reference being had to the accompanying drawings, in whiche- Figure I is an elevation of a machine embodying my invention; Fig. II, a sectional View ofthe same, taken on the line l l of Fig. I; Fig. III, a plan section taken on the line 2 2 of Fig. Il; Fig. IV, a detail sectional view taken on the line?) 3 of Fig. III; Fig., V, a detail perspective view of the bar after it has been operated upon, and Fig. VI a detail view of a completed nail. Figs. I and II are on the same scale. Figs. III,`IV, V, and VI are on the same scale with respect to each other, but on an enlarged scale with respect to Figs. I and II.

Like letters refer to like parts in all theI figures of the drawings. Y

My invention relates to machines for cutting or punching horseshoe-nails from cold bars previously rolled into proper shape, and has for its object to pro-vide a machine of this description which shallbe cheap and simple in construction and effective in operation.

The machine in question is more particularly devised for the purpose of carrying out an improved process ofcutting horseshoe-nails for which I have made application for Letters Patent filed May 12, 1887, Serial No. 237,987.

I will now proceed to describe a construction in which I have practically embodied my invention in one form, and will then particularly point out in the claims those features which I deem to be new and desire to secureby Letters Patent.

As shown in the drawings, the machine consists of a suitable frame, B, having a bed-plate, B', and a power-shaft, C, driven from any suitable source of power and provided with a pitman, c, mounted on a suitable crank or eccentric thereon and connected with a plunger, C', reciprocating in suitable vertical ways, c. These parts are all well known, and are not of my invention. They may be constructed in any suitable manner, or any other approved (No model.)

form of mechanism maybe substituted there for.

D represents a die-block mounted upon the suitable screws, d, to bring it into proper relative position with the die-plunger C. This die-block D contains the female die, being provided with a suitably-shaped die-aperture, d', conforming in its configuration to the shape of the finished nail, the said aperture d extending through the said block and through the bed B. The dic-plunger C carries a male die, d2, conforming in shape to the female-die aperture d', and serving in conjunction with the same to cut from the bar A the iinished nail. At a suitable point in advance of the cutting-dies d d2 are arranged the bevelingdies E and E. In the construction shown I have shown the female die E as arranged in the die-block I) and capable ofadjustment therein by means of a suitable screw, e, being secured after adjustment by means of a set-screw, d3, while the male die E is mounted in the dieplunger C', and is capable of a vertical movement in the said plunger. On the upper end of the die E is arranged a collar, e', against which aspiral spring, E2, bears, the said spring4 being arranged in a suitable recess in the dieplunger C', and serving to thrust the die E normally upward. Any other suitable spring or weight may be employed for this purpose, although I prefer the form shown. When this form is employed, ythe collar c may be adjustable upon the die E', in order to adjust the tension of the sp1-ing E2.

F represents a vibrating arm mounted upon a suitable bearing on the main frame B and caused to vibrate by means of a cam, F, on the shaft C. A stop, f, is provided to limit the upward motion of the vibrating arm F, and the cam F is preferably provided with a roller, f', to lessen the friction due to the contact of the cam with the arm. The vibrating arm F rests upon the upper end of the die E and serves to impart a vertically-reciprocating motion to the same. In the construction shown the upper end of the die E is` provided with an adjustable screw-bolt, e?, upon the head of which the vibrating arm bears, the said screw-bolt serving to take up wear, its operation to this end being obvious.

The bar A is arranged between lateral guides or supports G and G, and one of these guides, G', on that side opposite the side on which the beveling-dies are located, is capable of yielding laterally for the purposes hereinafter described, being held in position by a suitable spring or springs, g. The fixed guide G extends as far as the cutting-dies d d2 and serves to gage the bar A by means of the bevcled edge a34 thereof during the operation of cutting therefrom the finished nail. Suitable feeding devices are provided to feed the, bar A intermittently to the dies.

Any approved form may be employed, that which I prefer consisting of two rollers, H and H', actuated by means of an eccentric, 71, on the shaft C, said eccentric being provided with a rod, h', which is pivoted to an oscillating arm, H2, carrying a Spring-pawl, h2, which engages with a ratchet-wheel, H3, on the shaft of one of-the feed-rollers. The feed-rollers are connected by gears h3, and the upper roller is adjustable by means of screws Ht. This feed mechanism is well known, and not of my invention, and any other approved form of feed mechanism may be substituted therefor. A supporting-roller, I, supports the outer end of the bar A, the inner end resting upon the dieblock D in the manner shown more lparticularly in Fig. 2 of the drawings.

The machine thus organized operates to carry out my process in the following manner: The feed mechanism advances the bar A until it comes between the beveling-dies E and E', when. the die E descends and bevels the edge a of the bar A, forming the bevel portion a3. (Shown in Fig. 5.) During this operation of beveling, the metal forming the bar A is elongated transversely, the fibers being drawn out at the point where the bevel is formed, and thereby compacted and hardened. The guide orsupport G', being a yielding support,permits the bar A to yield laterally away from the dies E and Ef during the operation of beveling. The feed-rollers are so adjusted that they bear upon the bar with sufficient force to feed the same forward at the proper intervals; but their pressure upon the bar is not sufficient to prevent this lateral yielding of the bar. The bar A is then fed forward until it reaches the cutting-dies d d2, which then operate on the bar and cut therefrom the finished nail. During this feeding forward of the bar to the cutting-dies its position is gaged by reason of the beveled edge a3 of the same bearing against the guide or support G, so that when it reaches the said cutting-dies the ends of the said dies which cut the point of the nail correspond eX- actly with the sharp edge formed at the termination of the bevel ci of the bar. If the position of the bar were gaged from the head side thereof, any variation 'in the width of the bar, whereby a nail shorter or longer than this width would be produced, would result in the cutting of a nail with a blunt point, whereas by gaging the position of the bar from the beveled edge thereof the point of the nail will always coincide with the termination of the bevel and each nail produced will have a sharp point. It will be observed that t-he rib a2 is upon the upper side of the bar, whereas the bevel a3 is upon the lower side of the bar. The die d2 as it descends first strikes the rib a2 and .forces the same down into the female die until on the upper side the said rib is level with the web portion a of the bar.V This fiattening of the upper surface of the bar is due to the fact that the male die d2 is dat upon its under surface, and that the female die d supports the bar on both sides of the die aperture, so as to cause the bar to afford sufficient resistance to the descent of the male die to effectuate this preliminary flattening of the u pper surface thereof. The forcing of the rib down level with the upper surface of the web portion of the bar causes a corresponding downward projection of the metal on the under side of the bar, which projection is forced into the female die and is the first portion of the metal composing the bar which enters the said die, and this projection forms on the under side of the bar A the head a* of the finished nail, so that as the operation of cutting the nail from the bar proceeds, when this operation is finished and the nail is completely severed from the bar, it will have the form shown in Fig. 6, with the head a4 upon the same side of the nail as the bevel ai of the point.

It will be of course understood that the fcmale beveling-die may be located above and the male beveling-die below the bar A,in which case this reversal of the head of the nail will be unnecessary and the male cutting-die will then be so constructed as to conform to the shape of the upper side of the bar A, and thereby leave the head upon the same side as the bevel of the point. The parts are so timed that the beveling-dies operate just after the cutting-dies, and the former pair of dies are preferably located sufficiently in advance of the latter pair to bevel continuously beforehand a portion of the edge a of the bar A sufficient in length to provide material for the cutting of about three nails. In practice, when the machine is in continuous operation,the die.- plunger C first descends and cuts a nail from the bar A, and during the ascent of the said die-plunger the beveling-die E descends, bev- ICO els the edge of the bar, and ascends to its first i position, thereby performing the entire operation of beveling during the ascent or withdrawal of the male cutting-die.

It will be seen that I obtain a nail in which the point is hardened or compressed by drawing out the metal thereof under compression without crushing the bers ofthe metal, and thus rendering the point defective. Moreover, it will be seen that operating upon a bar of the form described, and which is readily obtainable fromy manufacturers, I complete the process of manufacture of the nails in a single machine with one handling, so that each nail comes from the machine in a finished or perfect condition without entailing the necessity of any finishing operations thereon. Moreover, as the cuttingdies are of xed dimensions, all the nails are exactly similar in shape, since each nail cut must conform to the shape of the cutting-dies. 4

It will be understood,of course,that the bar A is operated upon whilecold, so that the compressing'aet-ion of the dies serves to properly harden the metal.

One of the most advantageous features of allowing the bar to yield laterally whileits edge is being beveled is that by this means upsetting of the metal at the termination of the bevel is avoided, its thickness not being increased at this point, owing to the fact that the bar is capable of yielding away from the dies, thus giving the dies a drawing action upon the metal, instead of forcing it outward and upward from the body of the metal, and thereby upsetting it.

I make no claim in the present application to the process hereinbefore described, as the same forms the subject-matter of my previous application above specified.

It is obvious that various modifications in the details of construction may be made without departing from the principle of my invention; and I therefore do not wish to be understood as limiting myself strictly to the precise details hercinbefore described, and shown in the drawings.

Having thus described my invention, what I claim as new, and. desire to secure by Letters Patent, i is 1. In a machine for making horseshoe-nails, the combination, With suitable cuttingdies, of beveling-dies to operate upon the point edge of the bar in front ofthe cuttingdies,substantially as and for the purposes specified.

2. In a machine for making horseshoe-nails, the combination, with the die-plunger and its cutting-die, of the beveling-die mounted in said plunger and operating independently of the same, substantially as and for the purposes specified. l

3. In a machine for making horseshoe-nails, the combinatiomwith the die-block D, having female cutting-die d and female beveling-die E, of the die-plunger G, reciprocating in vertical Ways and carrying the male cuttingdie d2 and the male beveling-die E', mounted in said die-plunger and reciprocating independently of the same, substantially as and for the purposes specified.

4:. The combination,with the female cutting and beveling dies, of the die-plunger C', carrying the male cutting-die and connected by pitman c to the crank-shaft C, the male bevelingdie E', mounted to reciprocate in the die-plunger C', a suitable spring to thrust the said bevelingdie normally upward, the -vibrating arm F, arranged to bear on the head of the said beveling-die, and the cam F', mounted on the shaft C, to vibrate the arm F, substantially as and for the purposes specified.

5. In a machine for making horseshoe-nails, the combination, with the fixed guide for supporting one edge of the bar from which the nails are cut, of a yielding guide for supporting the other edge, substantially as and for the purposes specified.

6. In a machine for making horseshoe-nails, the combination, with the lieveling-dies arranged to operate on one edge of the bar, and the xed guide G, for supporting said edge, said guide extending to the cutting-dies and forming a gage for the beveled edge of the bar, of the yielding spring-controlled guide G', for supporting the other edge of the bar, substantially as and for the purposes specified.

HARRY A. vl/'ILLSn Witnesses:

CARRIE FEIGEL, A. M. BEST.

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