US1131974A - Compound die for forging projectiles. - Google Patents

Description

F. 8. WHITE.

COMPOUND DIE FOR FORGING PROJECTILES.

APPLICATION FILED MAY 15, 1914.

1,131,974. Patented Mar.16,1915.

mow WW FRANCIS S. WHITE, 0 F PHILADELPHIA, PENNSYLVANIA.

COMPOUND DIE FOR FORGING. PROJEGTILES.

To all whom it may concern:

Be it known that I, FRANCIS S. Wrirrn, a citizen of the United States, residing at Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented a new and useful Improvement in Compound Dies for Forging Projectiles, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form a part of this specification.

In an application filed by me November 14, 1913, Serial No. 800,922, I set forth and claim a process of forging projectiles and disclose dies for carrying out the process, said dies comprising two integral members, the members on one side cooperating to forge the rear of the projectile and the members on the other side cooperating to shape the front of the projectile. These dies, when made integral, are workable, but it will be understood that the center line of the die press extends between the two die members, so that the working force is never applied along its center line but at one side thereof, which is undesirable for obvious reasons. On the other hand it is desirable to operate both die members from the same die press.

The object of my invention is to produce a compound die, operable from the same die press, but with the die members so arranged that the center line of the die press extends through the center line of the die members.

The invention is especially applicable to the manufacture of projectiles and to the employment of dies of the contour disclosed in my said application, but it will be understood that the invention is not limited to dies of any particular contour nor to dies adapted to forge any particular article; although, of course, the most useful application of the invention will be to cases wherein the same article is subjected to two different die-forging operations In the drawings, which show a preferred embodiment of my invention, the figure is an elevation.

The compound die comprises three parts, the lower part a, which forms the base of the die structure, the intermediate part composed of the members I) 0, and the upper part (Z. The part a is cut away from front to rear to form a laterally extending aperture a to receive the base or rear of the Specification of Letters Patent.

Application filed May 15, 1914.

Patented an. 16, 1915.

Serial No. 838,658.

projectile, the bottom of which aperture is provided with the die face a. The part a is also cut away from its upper face to the lateral aperture to form an opening a to receive and guide the die member 6 of the part b c. The lower face of the die member b and the V-shaped face a of the part a cooperate to shape the base of the projectile.

The wider die member a of the part b 0 extends over upper face of the part a. The separate die member 03 overlies the die member o. The die members 0 and d cooperate to shape the front half, or point, of the projectile.

The members 0 and (Z are provided with lugs e and f respectively, and links 9 are pivoted on the lugs e and are adapted to be either swung down so as to be disengaged from the die cl or to be swung up so as to engage with the die (Z and rigidly connect together the members 0 and d.

The die member (Z is secured to the head ]t of a die press.

After the ingot is cast, the rear half of the projectile is placed upon the die face a. The links 9 are swung into engagement with the die member (Z, so that when the die press is operated the die members I) and 0 will move up and down with the die member 01. The projectile is turned after each reciprocation of the die member 7), thereby shaping, and reducing the cross-section of, the rear half of the projectile and impartin to it the desired qualities of fine grain and toughness. After the completion of this operation, the links 9 are disengaged from the die member a? and the die member a is allowed to rest upon the top of the part a. The front half of the projectile is placed on the die member 0 and the die 03 is alternately raised and forcibly lowered and the projectile turned until the forging of the point is completed.

Having now fully described my invention, what I claim and desire to protect by Letters Patent is:

A compound die comprising a fixed lower part constituting one die member, an intermediate part composed of two die members, the lower part being provided with a lateral aperture to receive the article to be forged and with side walls forming a vertical aperture to receive and guide the lower die member of the intermediate part, and a i m ebl p e W ns i utie ewhfi in bfistim ey e wbie in e t qn 11 have die member, the intermediate pert bein hel e unto set my hand, at Philadelphia, on adapted to rest upon the side walls of the this 12th d sty pf May, 1914.

lower part duringthe recipfocat'ion of'sztid FRKN'GIS S. WVHITE. pp p and si tsenn c eth 71 121 11 witne see and intermediate parts to cause them *to JOSEPH ENTWISLE,

mpye in unison. J WEIRIGH.

Copies of this patent may e -remained ie lfi =Q3T -Qkh rfifii fifiilig(i1 Commissioner of Patents,

Washington, D. G. v

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