US62980A - Ephraim thomas - Google Patents

Description

E. THOMAS.

HorseshoefNal Machme.

Patented March 19, 1867.

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TO ALL PERSONS TO WHOM THESE'PRSENTS SHALL COM-E:

Be it known that I, EPHRAIM THOMAS, of h/Iiddleboro, in the county of Plymouth, and State of b'Iassa-- chusetts, have invented a new and useful machine for making Horse-Shoe Nails, and do hereby declare the same to be fully described in the'A following specification, and represented in the accompanying drawings, et' whicha Figure I is a top view.

Figure 2, a front'elevation; and

Figure 3, a longitudinal section ofit.

Figure 4 is a transverse section taken through the header.

Figure 5 is a top view.

Figure G, a side view; and A Figure 7, an inner end view of the bed-knife.

Figure 8, a top view. i

Figure 9, an inner edge view; and

Figures 10 and 141 are side views of the stationary dies.

Figure 12 is an under side view; and

Figure 13 is a transverse section of the nail-plate as formed for-being cut in the machine, that is, such plate has a head-rib, a, extended` from it at one edge of it, the other edge being tapered to a wedge-shape, as shown at c. f i

The machine, in many respects, resembles a cut-nailimachine, that is, such n. machine as is ordinarily used for making what are termed cut nails. The frame of thc machine is exhibited at A, it being provided with a cam-shaft, B, in which are fixed two cams, b c,'a crank-wheel, d, and a balance-Wheel, e. C is the bed-knife,-

which isformed with a channel, s, for receiving and guiding the head projection a, while the nail-plate is in the act of being t'ed into the machine. A cutter, D, operates with the said knife in separating each nail blank from the nail-plate, such cutter being fixed in a. rocker-shaft or frame, E, to which a reciprocating motion isl imparted by means of an arnnj', extended from it, and jointed `to one end of a connectingrod, g, whose otherend is applied tothe crank-'pin of thc crank-wheel (Z. The header shown at H projects from a rocker-frame, F, which, at the proper periods, is raised upward by means of apitman, G, which rests on Ian ear, h, projecting from the rocker-frame E. The machinery for supporting and operating the movable cutter and' the header is essentially like such as is in use in the common cut-nail machines, and therefore needs no further description. Below the bed-knife C are thi-ec stationary dies, K, M, N. In advance of the `die K is a movable griping die, L, which operates with the die K, the two being formed so as to make what are termed the back slopes of the head of the nail, this being shown at "17, in Figure 14, which is a side view of the nail as it appears after its formation by the machine. The point is made by cutting one edge of the nail, viz, as shown at 7c Z, in tig. 14, a portion, 7c l m, represented by dotted lines, being removed from the nail in order to make the point. The point is to be propd crly finished by the f arrier during the process of straightening the nail and preparing it foribeing driven into the hoof of a horse. The portion s'o separated from the nail is cut oi by the front shear O, and the stationary die N. This frdnt shear and the griping die L are fastened to projections Q R, from a horizontal shaft S, from which an arm, T, extends and bears against the cam ic. There isa spring, U, for retracting the arm T, There is a spring-gauge, V, and ar nippe'r, W, to the machine, they being like what are used in commen cut-nail machines, and while in operation perform the same functions in. this machine as they do in others, that is, the gauge stops the nail-plate `when fed into the machine, and guides the blank down after being cut from the plate; The nipper holds the blank, and, with the die M, turns it ninety degrees preparatory to its being caught bythe griping dies. Y

In the operation of this machine, the nail-plate is to be fed along into it with an intermittent motion, and A up to the gauge V, after which the movable cutter, D, descends and separates a blank from the nail-plate and forces such blank downward. Next, the nipper comes into operation with the die M, turns or revolves the blank ninety degrees, so as to enable the griping dies to seize it in a proper manner. The movable griping die next comes up and holds the blank firmly against the stationary griping die. Next, the header advances and upsets the head and' causes the griping dies to form the `back slopes of the head, which they will dq by the metal being pressed and expanded into them. During the advance ofthe movable griping die' the front shear O is moved np toward its fellow die or shear, N, the two operating to remove from the blank the ysurplus metal necessary to be removed therefrom in making the point. Next, the nail drops from the machine. 4

I claim the bed-linife as made with the channel e, for receiving and guiding the head projection of the nailplate during its entrance into the machine. i

I also claim the combination of the point shear O, and its fellow shear N, with the dies for separating the blank from the nail-plate, and heading` if; as described.

EJJIRAIM THOMAS.

Witnesses:

R. H. EDDY, F. P, HALE, Jr.

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