US326797A - Die for forging blacksmithsj tongs - Google Patents

Description

(No Model.)

F. T. SMITH.

DIE FOR PORGING BLAGKSMITHS' TONGS.

No. 326,797. Patented Sept. 22, 1885.

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UNITED STATES FREDERICK T. SMITH, OF PLANTSVILLE, CONNECTICUT.

DIE FOR FORGING BLACKSMITHS TONGS.

SPECIFICATION forming part of Letters Patent No. 326,797, dated September 22, 1885.

Application filed July 27, 1885.

To all whom it may concern.-

Be it known that I, FREDERICK T. SMITH, of Plantsville, in the county of Hartford and State of Connecticut, have invented a new Improvement in Dies for Forging Blacksmiths Tongs; and I do hereby declare the following, when taken in connection with accompanying drawings and the letters of reference marked thereon, tobe a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in-

Figure 1, a perspective view of the upper part of the die inverted; Fig. 2, aperspective View of the lower part of the die; Fig. 3, the blank as cut from the bar; Figs. 4, 5, 6, 7, and 8, perspective views illustrating the several operations in the formation of one part of a pair of tongs.

This invention relates to the construction of dies for forging and shaping the parts of blacksmiths tongs. These tongs are made from two parts hinged together, the two parts crossing each other at the hinge, one end forming the jaws and the other the tails. The two parts are alike in shape.

The object of the invention is to produce these parts cheaply and of uniform shape; and it consistsin the dies constructed as hereinafter described.

As represented, the several dies or series of dies are formed upon asingle block, A representing the lower part and B the upper part. The parts are formed from blanks cut from a flat rod, say as seen in Fig. 3. The first operation is to break down the bar at the junction of thejaw and tail. To do this the lower die is constructed with a rib, O, presenting a rounded surface upward. Upon this the hot blank is placed, and the flat surface of the other part of the die brought thereon will force the metal laterally outwardsay, to the left, as seen in Fig. 4. Then to flatten the jaw end of the blank it is next set over a shoul der, D, on the lower die, and on the upper die is an inclined projection, E, corresponding to the shoulder D. The blank is laid upon the shoulder D so as to bring the portion of the jaw previously acted upon upon that shoulder, then the part B brought down thereon. The

(No model.)

inclined surface E flattens the end, as seen in Fig. 5, giving the general outline to the jaw portion. Next, to form the shoulder at the junction of the jaw and tail, the blank is laid upon the flat surface F of the part A, below the general surface of the die, equal to the thickness of the tail to be produced. The blank, Fig. 5, is laid flatwise upon this surface F, with thejaw portion extendingbeyond. Then the flat surface of the part B brought thereon will bring the shoulder to nearly a right angle, as seen in Fig. 6. At this point the tail of thejaw is drawn, using the flat surface F for the thickness of the tail, and a similar surface, G, for the width of the tailthat is, the surface G is below the surface F the distance that the width of the tail is greater than its thickness, and so that passing the tail portion of the blank over the surface G edgewise it is drawn to the required width, then upon the surface F to the required thickness, as seen in Fig. 7. Then to give the blank the required bend it is placed over a rounded surface, H, in the lower die, and beneath a corresponding cavity, l, in the upper die, and so that the two brought together will give the proper shape at the junction between the tail and thejaw, as seen in Fig. 8.

Adjacent to the part H is a flat surface, L, which may be used after the bend to flatten the tail portion.

K is a cavity in the lower die corresponding to the jaw, a part of the tail, and the junction of the tail with the jaw. After the blank has been substantially shaped, as before mentioned, it is placed in this cavity and there struck by a corresponding flat surface on the die B to bring the blank to the required shape. Provision is made for the escape of surplus metal in the form of a fin, which is subsequently trimmed in the usual manner of trimming the fin from forgings.

By this die or series of dies I am enabled to produce each part of the tongs complete at a single heat; but more than one heat may be taken, if preferred.

For convenience a cutter, M, is arranged at one end of the part A to cut off any surplus metal necessary to bring it to the required length.

The herein-described die for forging b1ack-' smiths tongs, consisting of the break-down rib G, the shoulder D, the recessed flat surfaces 5 F G, cavity H, and the finishing-cavity K,

combined with the second part of the die having the inclined projection E and the cavity I on its working-face corresponding, respectively, to the portions D and H of the other die, substantially as described.

FREDERICK T. SMITH. \Vitnesscs:

WILLIAM H. WITHAM, WALTER C. ATWATER.

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