US104292A - Improved die for forging ears for carriage-spring heads - Google Patents

Description

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JOHN EVANS, OF NEW HAVEN, CONNECTICUT.

Letters Patent N 104,292, (lated June 14, 1870.

IMPROV-BD DIE FOR FORG-ING- BARS FOR CARRIAGE-SPRING HADS.

MH-V* The Schedule referred t in these Letters Patent and making part of the sama To all whom it may concern Be it known that I, JOHN EvANs, of New Haven, in the county of New Havelland State of Connecticut, have invented a new Improvement in Dies for .Forging Ears for Carriage-spring Heads; and I do hereby declare the following, when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be such a full, clear, and exact description of the same, and which said drawings constitute pari.' of this specification, and represent in- Figure 1, a perspective view of thc die;

Figure 2, a perspective View of the follower;

Figure 3, the blank previous to operation.;

Figure 4, the blank after the operation; and, in

Figure 5, a vertical central section through'the die and follower to illustrate the operation.

This invention relates to an improvement in dies for forging ears for carriage spring-heads, the object being to prepare the ears'for attachment to the springs previous to welding, that is to say, to form ribs upon oneI side as a guide for the proper relative position, and also as a means for attachment to the heated spring by compressing the said ribs into the heated metal; and, t

The invention consists in a die and follower, con

structed and formed so that the blank is set upon its edge and struck by the follower, and the met-al forced out to form the ribs.

A is the die, with a recess, B, in its side correspondingrto that portion of the ear above the rib af, as

formed, into which a projection, D, on thefollowenE, passes as a guide to insure the proper relative position of the die and follower.

In the follower E a recess, F, is formed, corresponding to `that port-ion of the ear below the rib a, (see 4,) and with project-ions, a, of the thickness of "the rib a', which strike upon the ripper edge o f the die as :a stop. A vertical groove, ll, is formed 1n the follower, corresponding to the rib Il to be produced. A pin, G, is arranged in the recess B to preserve the perforation in the blank, and a slot, H, formed in the part D oi the follower, to pass over the said piu. I 1

The blank, as seen in fig. 3, is formed of sulcrent width to 'give the requisite metal for forming the ribs, and ,when Vheat-ed is placed into the recess B over the pin G; then the follower strikes down thereon, as seen in fig. 5, the ear' shown in solid black, which compress4 es the metal, throwing outkthe ribs a and d, as seen in fig. 4.

The die A, having the recess B, pin G, and guide C: and the fol o ver E, having the recess F, with vertical grooved projections (L `1v/aud slet H 1n the part D, as and for the purpose set forth.

JOHN EVANS.

Witnesses: V

A. J. TIBBITS, J. H. Summum'.

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