US1071742A - Mushroom-bullet. - Google Patents

Description

P. O. HOAGLAND.

MUSHROOM BULLET.

APPLIOATION rum) APR. 2a, 1913.

1,6? MHZ. Patented Sept. 2, 1913.

WW M 0 A TTORNEY coLumsm PLANDGRAPH CID-,WASHINDTON. D. c.

UNITED STATES PATENT QFFICE.

FRANK O. HOAGLAND, OF BRIDGEPOR-T, CONNECTICUT, ASSIGNOR- TO THE UNION METALLIC CARTRIDGE COMPANY, OF BRIDGEPORT, CONNECTICUT, A CORPORA- TION OF CONNECTICUT.

MUSHROOM-BULLET.

Specification of Letters Patent.

Application filed April 38, 1913.

T 0 all whom, it may concern.

Be it known that I, FRANK O. IIOAGLAND, a citizen of the United States, residing at Bridgeport, county of Fairfield, State of Connecticut, have invented an Improvement in Mushroom-Bullets, of which the following is a specification.

This invention has for its object to provide a hard pointed and practically fulljacketed bullet that will have the flat trajectory and the great muzzle energy, velocity, range, penetrative power and accuracy of ordinary full -jacketed bullets combined with the great shocking power of mushroom bullets; that is to say, my present invention enables me to produce a mushroom bullet having all the advantages of an ordinary full-jacketed bullet and likewise having to the fullest extent the shocking powers of an ordinary softnosed mushroom bullet.

Vith these ends in view I have produced the novel bullet which I will now describe,

. referring to the accompanying drawm forming a part of this specification an using reference characters to indicate the several parts.

Figure 1 is a longitudinal section of the jacket of my novel bullet; Fig. 2 a view of the completed bullet, the lead core being inserted and the base of the jacket closed about the core; Fig. 3 a similar view illustrating a slightly variant form, and Fig. l is a view of the bullet mushroomed by firing.

It will of course be understood that the invention is not limited to any special style or contour of bullets but is applicable to conical bullets of any style or contour.

The essential features of the invention are that portions of the jacket near the point are cut away leaving openings, having forwardly projecting edges, which are filled by the relatively soft metal of the core when the latter is swaged to place, the bullet as completed having a perfectly supported tip forming a part of the jacket, below the tip openings filled by the relatively soft metal of the core, giving to the bullet a normal superficial contour, and the tip being connected to the main portion or body of the jacket by bridge pieces or connecting strips which are narrow at their inner ends causing them to serve as wedges when the bullet strikes an objective and split the body of the jacket and cause both the lead core and the forward end of the jacket to mushroom, as

shown in Fig. 4. The exact shape of the openings in the jacket and of the bridge pieces or connecting strips is wholly immaterial, so far as the present invention is concerned.

10 denotes the body of the acket, 11 openings therein, 12 the tip, 13 bridge pieces or connecting strips which connect the tip with the main portion of the body and are narrow at their inner ends and 14 the relatively soft core, ordinarily of lead, portions of which are forced through the openings in the body, when the core is swaged to place in the usual manner. It is deemed sufficient for the purposes of this specification to state that the jackets are formed complete with the openings therein, the cores of lead are cast in the form of slugs, the ackets are placed in dies, the lead cores are placed therein and swaged to place, portions of the lead of the cores passing through the openings in the jackets and being swaged to the form of the completed bullets by impact with the dies, and then the bases of the jackets are closed about the bases of the cores. as clearly shown.

The openings 11 in the jacket are cut backward from near the point and may be approximately V-shaped when seen in section or elevation, as in Figs. 1 and 2, the sides of the opening meeting at an angle, or the openings may extend straight backward, the sides thereof being parallel or substantially parallel with the axis of the bullet, as in Fig. 3, the essential features being that these backwardly cut openings in the jacket leave bridge pieces, narrow at their inner ends, which connect the tip with the body of the jacket, and forwardly projecting edges 15, which by engagement with an objective assist in tearing the bullet open and facilitate the mushrooming operation.

The exact amount of the metal of the jacket that is closed about the base of the core is of course immaterial. It is essential, however, that sufiicient metal of the jacket be closed about the base of the core to render it impossible for the core to be forced out of the jacket in firing, leaving the jacket in the gun. In Fig. 2 I have shown the entire base of the core as covered by the inturned end of the jacket and in Fig. 3 I have shown a portion only of the base of the core as covered by the inturned end of the jacket.

When my novel bulletstrikes an objective the tip is checked but owing to the softness of the metal in the openings between the bridge pieces, the impetus of the body of the bullet will cause the bridge pieces to act as wedges and split the jacket. The edges 15 also tend to cause the jacket to be opened outward, but, irrespective of the shape of the openings, the checking of the tip causes the lead of the core to be forced outward through the openings, tearing the jacket and producing an effective mushrooming of the bullet, as I have demonstrated by many experiments.

Having thus described my invention I claim:

1. A bullet of the character described comprising a full jacket having openings backwardly cut from near the point leaving a tip, bridge pieces narrow at their inner ends which connect the tip with the body of the jacket and forwardly projecting edges at the outer sides of the openings, and a relatively soft core swaged into the jacket and filling the openings.

2. A bullet of the character described, comprising a full jacket having openings V-shape in section backwardly cut from near the point leaving a tip, bridge pieces narrow at their inner ends which connect jecting edges at the outer sides of the openings, and a relatively soft core swaged into the jacket and filling the openings.

4. A bullet of the character described, comprising a full jacket having openings backwardly cut from near the point leaving 2 a tip and bridge pieces narrow at their inner ends which connect the tip with the body of the jacket, said bridge pieces serving as wedges to split the body of the jacket when the tip strikes an objective, and a relatively soft core swaged into the jacket and filling the openings.

In testimony whereof I atfix my signature in presence of two witnesses.

FRANK Oi HOAGLAND. Witnesses:

A. M. VVoosTER, S. W. ATIIERTON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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