US376302A

US376302A - Myron e

Info

Publication number: US376302A
Authority: US
Publication date: 1888-01-10
Anticipated expiration: 1905-01-10

Description

(No Model.)

E. GREGG.

PROJECTILE. No. 376,302. Patented Jan. 10 188 8.

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UNITED STATES PATENT (3 EIcET.

MYRON E. GREGG, OF WVASHINGTON, DISTRICTOF COLUMBIA.

PROJECTILE.

SPECIFICATION forming part of Letters Patent No. 376,302, dated January 10, 1888.

Application filed October 6, 1S87. Serial No. 251.607. (No model.)

To all whom it may concern.-

Be it known that I, MYRON E. GREGG, a

citizen of the United States, residing at Washuse the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates'to the class of projectiles for smallarms wherein the cartridge is formed with a metallic shell or case containing the charge and bullet, with the primer inserted in the closed end, and is designed to more perfectly adapt such ammunition for use in repeating-guns having a tubular magazine in which the cartridges rest with their ends in contact, and are ejected by means of a coiled spring. Its object is to overcome or remedy certain defects found to exist in such projectiles as now constructed when used in magazine-guns, whereby their efficiency is destroyed or greatly impaired, and at the same time to preserve all advantages possessed by such projectiles, among which is their extreme ductility, enabling them to fit and follow the grooves in the barrel. It is found that the soft metal of which the bullet is composed renders it liable, when in the tubular maga' 'zine, tobecome bruised, shortened,upset, and

enlarged by contact with the cartridge in .front from the shocks occasioned by firing heavy charges, ejection into the carrier for transmission to the firing-chamber, by much handling, and by constant motion when carried on horseback, so that their shape is impaired,

posed to fit and follow the grooves of the barre]. 1

In the drawings, Figure 1 represents a completed cartridge having its bullet provided with my cap or shell inclosing its outer or ex posed end. Fig. 2 is a longitudinal vertical section of a cartridge provided with a bullet having a longitudinal recess in its point and generally known as the express bullet,and having its exposed surface inclosed or covered by my cap or shell. Fig. 3 is a detail showing my cap in vertical section and its relation to the bullet,the base of which isshownin dotted lines. Fig. 4 is a similar view representing my cap pointed as formed for use in rim-fire cartridges. Fig. 5 is a longitudinal vertical section of my cap, showing a modification in theform of the perforations in its base for securing it to the bullet. Fig. 6 is a cross-section of Fig. 3 through the line as an. a bottom or plan view of the under side of -the cap, Fig. 4, showing an inwardlyprojecting annular flange for securing it to the bullet. Fig. 8 is a cross-section of Fig. 5 through the line y f1 showing inwardly-projectinglugs formed by the perforations around the base.

Referring more particularly to the drawings,

A represents the case of the cartridge, 13 the bullet, and G the cap or shell inclosing the outer end of the bullet, which cap is preferably secured to the bullet by means of perforations 0, arranged aroundits base, into or through which the lead is forced in molding or swaging the bullet, or the lower edge of the cap may be turned inward, forming the flange b, as shown in Figs. 4 and 7, or inwardly-projecting lugs a may be formed on the inside of the perforations, as shown in Figs. 5 and 8.

My bullet is formed by first placingthe shell within the bottom of the mold or die and then casting or swaging the bullet therein, causing the lead to fill the perforations or to surround and embrace the lugs or flange.

The form of cap shown in Fig. 2 is that designed for use on what are known as express bullets, and is open or perforated at its outer end to correspond with the recess in the bullet,and serves to protect the front hollow point of the bullet instead of the copper tube usually employed for the purpose.

The greatest diameter of my cap or shell is Fig. 7 is designed to equal the inside diameter of thebore of the gun, and thelead flanges d of the bullet are of a slightly-increased diameter to engage the grooves of the barrel.

It will be observed that the cap or shell only covers that portion of the bullet forward of the flanges d, leaving the base, having the annular flanges which are to fit the grooves of the barrel, exposed, as shown in Fig. 3. This base fits Within the case A of the cartridge, as shown in Fig. 2, and the annular grooves between the flanges contain the lubricant.

I am aware that a projectile has been formed by first making a conical shell of copper or other metal and then forcing into the base of same a body of lead or other soft metal, there by covering the entire outer surface; also,that a bullet has been formed having its outer point and its base covered with a casing of harder metal, leaving a portion of its center bare, whereby the soft metal of which its body is composed is prevented from contact with the barrel. I am also aware that a compound projectile has been used composed of a core ofsoft metal and an outer covering shell of harder metal,the former being cast or melted into the. latter; butI do not claim either of these constructions.

Having thus described my inventiomwhat I bination, with the softanetal bullet, of a cap or shell composed of a harder substance whose diameter equals the bore of the barrel, surrounding and inclosing that portion of the pro-.

the bullet, substantially as and for the purpose described.

. 3. The comhinatiomin a projectile t'orsmall-