US309640A - mills - Google Patents

Description

(N0 Modl.) 2 Sheets-Sheet 1.

J. MILLS.-

HORSESHOE NAIL MACHINE.

No. 309,640. Patented Dec. 23, 1884.

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Invenlm (N0 Mbdel.) J MILLS 2 Sheets-Sheet 2.

HORSESHOE NAIL MAGHINE.

No. 809,640. Patented Dec. 23, 1884.

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.TAIVIES ll'llLLS, OF KEESEVI LL1 NEW' YORK.

HORSE$HOE=NAlL MACHINE.

QJPECIFICJA'I'ION forming part of Letters Patent No. 309,6), dated December 23, 1884.

Applicai ion filed January 7, 1884.

(No model.)

ville, Essex county, in the State of New York,

have invented new and useful Improvements in HorseshoeNail Machines; and I do hereby declare that the following is a full. and accu- .rate description of the same, reference being had to the accompanying drawings,wherein Figure 1 is a perspective View of my machine. Fig. 2 is a vertical longitudinal section. Fig. 3 is a similar section, showing a different cam movement. Fig. etis a sectional elevation of the edge-hammer mechanism.

Fig. 5 is a sectional elevation of the pitmanconnection. Fig. 6 is a plan of the cutterholder.

My invention relates to that class of horsenail machines wherein the nail is forged on the end of the heated nail-rod, being drawn out flatwise by a roller carried on a revolving shaft acting in opposition to a stationary anvil, and forged edgewise by a reciprocating hammer operating in opposition to a different part of said stationary anvil, or by two hammers reciprocating to simultaneously strike the edge of the nail, and it consists, first, in a vibrating feed-bar provided with a parallel.- motion clamp, whereby while the said clamp, with the feed-bar, moves in aeircular are the parallelism of the clamp is preserved.

The device is substituted for the ordinary reciprocating slide-holder, which is very liable to derangement; second, in the adjustable cutters, whereby the nail is severed from the rod after being forged; third, in the structure of the cdgc-ibrging hammer and its drivingconnections.

.A. is the frame of the machine, constructed, as usual, of cast-iron, and supported upon legs of the same metal bolted to the frame. v

B is the main driving-shaft, upon which are mounted the principal drawing-out rollers c and the eccentric d, which carries the pitman E, whereby the edge-forging hammer F is actuated. If two hammers are used-one for each.

edgethen the shaft will be provided with two eccentrics, and will actuate the two hammers. At one extremity of the shaft B there is a pulley whereby the motive power is applied by a belt from the shaft of the prime mover, and at the other extremity of the shaft B there is a pinion, (l, which meshes with a large wheel, H, and thereby transmits motion to the counter-shaft I and the actuating-cams JK L,

carried upon it. The counter-shaftIturnsin boxes pendent from the frame A.

M is the solid stationary anvil upon which the nail is forged. It is mounted solidly up on the frame.

N is an arm or levermounted upon the rockshaft 0 and caused to vibrate backward periodically by engagement with the cam K, while it is moved in the opposite direction by the spring P or other equivalent device. The vibrating arm N carries the nail-rod forward to the forging roller and hammer, and at the proper moment withdraws it again to the cutter, which severs it from the rod. The gripping-clamp, whereby the rod is held to the arm N, consists of a short stud, which is inserted through a proper bearing in the upper or free end of said arm, and at the inner end of said stud a short arm, Q, turned outward or away from the cutters, and at the outer end of said stud there is a longer traveler-arm, R, turned forward or toward the cutters. There is also upon the frame, and alongside the path described b y the arm N, a curved-faced guide, S, on which the end of the guide-arm R traverses backward and forward as the arm N vibrates. The curve of the guide S is such that the arm R is raised when the stud Q is raised in passing the arc of oscillation of the arm N, and thereby the clamp-stud arm Q is oscillated as to the arm. N just sulficient to preserve its horizontal parallelism as the free end of the arm N vibrates in its circular arc, The nailrod T is held firmly against the under surface of the arm Q by means of a clamp-bar, U, which is capable of a longitudinal movement in the guides along the side of the arm i. The upper end of the bar U is drawn to an edge, so as to enable it to bite and hold the rod firmly against the arm Q. It 'is forced into engagement with the nail-bar by means of a spring, 'V, or other suitable device, and is at the proper moment retracted to release the rod by a rocking tappet, WV, bearing on the shoulder a, actuated by the cam L. \Vhen so released the attendant thrusts the rod forward until its end encounters a stop, y, which indicates the proper feed; or if the rod is cold it is at that moment replaced by a freshlyheated. one. The biting-edge of the bar U strikes the arm Q behind its axis, so that the upward thrust of said bar against the arm Q tends to keep the guide-arm R down and in engagement with the guide S.

The stop 11 is a bar arranged in guides parallel with the main shaft, but in position to intercept the nail-rod when said stop is thrust forward. In its normal, position, however, it is retracted and held back by a spring, a, or

other suitable means for withdrawing and holding it back, until the proper moment for thrusting it forward coincidently with the action of the tappetW to release the rod, and actuated by a cam projection, q, carried upon the cam L. The lever g is actuated, and it thrusts the stop 1/ forward in front of the nailshaft Iis making its revolution, at the conclusion of which the cam K will again encounter the arm N and draw the nail-rod back from the forging devices. The cam J brings the cutters h i into action at the moment when the rod has been thus withdrawn and the nail is severed from the rod. The cutter h is mounted upon a vertically-moving shaft, k,

5 jointed at its'lower end to the lever Z, which is periodically engaged and actuated by the engagement of the projection on the cam J with the pin t on the arm I. The cutter h is sufficiently wide to cover the width of the nail-rod, and maybe the full width of the cutter 6. Said cutter is mounted upon a block, which is pivoted to the side of the shaft k at a point above the cutter, and said block 9 is adjusted upon said shaft to the right or left by means of set-screws m m, and thereby said block 10 is firmly held, and the cutter h may be adjusted to the cutter i as may be required. The cutter z is also adjustable upon the bed of the frame A, but is stationary while the machine is in action. The hammer F is mounted on a vibrating frame, p*, which is pivoted to the bed of the frame A below the anvil, so that its blow is delivered almostexactly in a horizontal direction. The frame 1) is provided with two projecting arms, 1) p, and with a cross-head, q, the ends of which are adjusted upon and secured to the respective arms p p. Said cross-head is provided with a spherical wrist or j ournal at its middle, and the pitman E is provided at its lower end with a spherical box adapted to said wrist,so that the oscillatory motion of the pitman,due to the rotation of the eccentric (Z, will not cramp the pitman-connection with the hammer-frame.

The operation of this machine is briefly as follows The machine may be supposed to be at rest with the arm N drawn back, the bar U drawn down, and the stop-bar y thrust forward. This may be considered the initial position of the machine. A nail-rod heated at one end is placed in the clamp between Q and U, and-with its end against the bar y, and the machine is then started. The motion of the machine releases and actuates the partsin the following order: Bar U is released. Stop 9 is retracted. forward by the spring I. This carries the end of the nail-rod upon the anvil,where it is forged by the roller 0 and hammer F during the time the cams J K L are turning their revolution. At the proper moment the cam K engages arm N and retracts it and the nailrod. The cam J actuates the cutters and severs the hail from the rod. The cam L retracts the bar U'to release the nail-rod and thrust.

forward the stop y.

- The attendant has close at hand a small furnace with several nail-rods in heating, and at the moment when the bar U is retracted he either pushes the nail-rod forward to the stop or replaces it with a fresh one, and so on continuously,so that the machine does not come to rest at the initial point until such time as it may be necessary or desirable to stop it.

Having described my machine, I claim- 1. The vibrating feed-arm N, automatically actuated by the machine, combined with the stud-armsQ and R, guide S, and grip-bar U, substantially as set forth, whereby the hori zontalparallelism of the rod-clamp is preserved during the movement of the arm N through a circular are.

2. The vertical cutter-shaft 7c,combincd with the cutter h, and supporting cutter-block p, pivoted to said shaft, and the set-screws m m,

Arm N is released and thrust whereby the cutter k may be moved back or forward, as desired, to properly-adjust it to the stationary cutter 'i, substantially as set forth.

3. The hammer-frame p'-,prov'ided with the arms 1) p, and the cross-head Q',Wli3h its ends adjusted upon and secured to said arms respectively, and provided with aspherical wrist combined with the pitman E, provided with a corresponding spherical box, and the actuating-eccentric d upon the main shaft B, substantially as set forth.

at. In combination,in a horse-nail machine, and arranged substantially as described, the main shaft 13 and the counter-shaft I, coupled by geared wheels, whereby motion is trans-' mitted from one to the other, the forging roller and hammer actuated from the main shaft, and the Vibrating rod-carrier N, pro vided with the oscillating holder Q and guides R S, the feed-reciprocating stop 9 and the reciprocating cutter, respectively actuated by cams J K L upon the counter-shaft, as set forth.

JAMES MILLS.

Witnesses:

F. A. ROWE, O. E. G-IDDINGS.

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