US115196A

US115196A - Improvement in dies for forging axles

Info

Publication number: US115196A
Authority: US
Publication date: 1871-05-23
Anticipated expiration: 1888-05-23

Description

JOHN HARRINGTON.

P Q BI'Itin D'ies for Forging A-x'les. I N0. 115,196.; Patented May 23,1871.

= UNITED STATEs PATENT OFFICE. j

JOHN HARRINGTON, or BRIDCRPORT, CONNECTICUT.

. IMPROVEMENT IN DIES FOR FORGING AXL'ES.

Specification forming part of Letters Patent No. 115,196, dated May 23, 1871.

To all whomit may concern:

Be it known that I, JOHN HARRINGTON, of

] Bridgeport, in the county of Fairtield and State of Connecticut, have invented anew Improvement in Dies for Forging Axles; and I do hereby declare the following, when taken in connection with the accompanying drawing and the letters of reference marked thereon,

to be afull, clear, and exact description of the same, and which said drawing constitutes part of this specification, and represents, iii- Figure 1, a face view of the lower die; Fig. 2, a face view of the upper die; Fig. 3, a side view of the axle as it comes from the dies;

and in Figs. 4 and 5, respectively, end views of the lower and upper (lies.

This invention relates to an improvement in dies for forging axles, and especially that class called coach-axles, as shown in Fig. 3, formed with a collar, a, a cylindrical portion, (1 0, each sideof the collar, and an arm, f, the part It back of the cylindrical portion d formed square. The object of this invention is the construc tion of dies whereby the axle may be thus formed at a single heat; and it consists in the construction of dies for this purpose, as more fully hereafter described. 1

The ends A A of both the lower and upper die are formed as seen in Figs. 4 and 5, leaving narrow meeting-surfaces on both sides, as seen in Figs. 1 and 2. Next adjoining this portion of the die is formed the die for shaping the collar'and the square portion for the axle 'i, being a recess corresponding to the collar a. n is a second recess, corresponding to the cylindrical portion ol, and a recess, m, of V shape, corresponds to the square portion h. Each way, 0 D, from these parts the die is formed to simply contract the metal. Then the finishin g-die is constructed with a recess, B,

to form the arm, and recesses i, a, and s to form, respectively, the collar a and the cylindrical portion at c.

The bar from which the axle is to be formed is heated and placed in the recess 0 D of the lower die, and the upper die caused to strike successive blows upon the blank, the Operator turning the bar, between each stroke, onefourth around, until the collar a, cylindrical portion 01, and square portion h are shaped. Then the blank is taken from the die and that part of the bar which extended into the recess 0 of the die is placed on the anvil A, and then, by the action of the upper die, is drawn out until in suitable position to be placed in the finishing-die. Itis then placed in the finishing-die, the square portion outside, and the blank constantly turned while the upper die is operating until the arm f, collar a, and cylindrical portion 11 e are all finished to the required size, and this operation I am enabled to perform by these dies at a single heat.

To save a multiplicity of dies I make the blocks E F, within which the shaping-dies are formed, detachable from the anvilAgso that other dies for diiferent-sized axles may be substituted.

I do not broadly claim dies for shaping axles, and I do not wish to be understood as broadly claiming the dies B S i n and D m M0 ant the breaking-down die A.

I claim as my invention-- The dies B S i n and D m at c jointly with the breaking-down die A connected therewith, substantially as described.

' JOHN HARRINGTON.

Witnesses L. M. SLADE, U. M. HATCH.