US271883A

US271883A - Auxiliary rifle-barrel for guns

Info

Publication number: US271883A
Authority: US
Publication date: 1883-02-06
Anticipated expiration: 1900-02-06

Description

(No Model.)

H. T. MARTIN.

AUXILIARY RIFLE BARREL FOR GUNS. No 271,883. Patented Feb. 6,1883.

WITNBSSBSZ: IN VENTOR ATTORNEYS.

UNiEn STATES ATENT OFFICE.

HARRY T. MARTIN, OF FORT ROBINSON, NEBRASKA.

AUXILIARY RIFLE-BARREL FOR GUNS.

SPECIFICATION forming part of Letters Patent No. 271,883, dated February 6, 1883,

Application filed A ugust 10, 1882. (No model.)

T 0 all whom it may concern:

Be it known that I, HARRY T. MARTIN, of Fort Robinson, in the county of Sioux and State of Nebraska, have invented a new and Improved Cartridge-Rifle, of which the following is a full, clear, and exact description.

The object of my invention is to provide an attachment to the United States or Springfield rifle, and also to other rifles of large caliber, whereby the small thirty-two-one-hundredths cartridges may be used in them for gallery practice and elsewhere, by which the labor and expense, also the expensive tools, now required for making the forty-flve-onehundredths cartridges may be dispensed with.

The invention relates to a device which I call a cartridge-rifle, the same being a bushing for the breech of the rifle-barrel, and bored and rifled for the small cartridges, said bushing extending a short distance along the barrel beyond the cartridge-chamber of said barrel, and having a flange at the base corresponding to the flange of the large cartridge; also a spring or springs to secure it in the barrel, and also a shellextractor contrived to be worked by the rifle-shell extractor, all as hereinafter fully described.

Reference is to be had to the accompanying drawings, formingpart of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is alongitudinal sectional elevation of a portion of a rifle, showing my improved cartridgerifle in side elevation and applied to the rifle as in use. Fig. 2 is a longitudinal sectional elevation of my improved cartridgerifle on an exaggerated scale, the section being on line :20 a, Fig. 3. Fig. 3 is an end elevation of Fig. A. Fig. 4 is a section of Fig. 2 on line y y.

I make a steel bushing, a b, to fit in the breech of the rifle-barrel c, as shown, the part a fitting the cartridge-chamber of the barrel,

in side view atj, Fig. 2.

and the part 1) extending a short distance beyond said chamber along the barrel, said bushing being bored and rifled suitably for the small thirty-two-one-hundredths cartridges d, and also chambered in the breech forthe flange e of the said cartridge. It also has a flange, f, corresponding to the flange of the large cartridges to fit in the counterbore of the rifle, and in the upper side is a sliding shell-extractor, q, which has a head, h, which occupies a slot of the flange f, so that the extractor i of the rifle will act on it the same as it does on the flange of the large shell, and cause it to eject the shell of the small cartridges. The groove in which the extractor slides is shown The cartridge-rifle is to fit snuglyin the barrel, but so that it may be pushed out with the ramrod when not required for use, and one or more springs, k, having ahead, 1, to drop into a nick or nicks made in the breech of the barrel 0, will be applied to it in a groove or grooves in the exterior surface, as shown, for holding it more securely.

It will be seen that this simple device will enable the small and cheaper cartridges to be used instead of the larger ones, and will thus save much of the expense of gallery practice.

I am aware that it is not broadly new to use a rifle'bushing by which a smaller cartridge may be used than the one for which the rifle may have been intended originally; but

What I claim as new and of my invention lS- The combination, with the bushing a b, of one or more springs, in, each having a head, l, and a seat in the groove of the barrel, whereby the spring-head Z may be adapted to drop into a nick in the breech of the rifle, for the purpose specified.

HARRY T. MARTIN.

Witnesses:

MARTIN J. WEBER, JOHN DOYLE.