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Publication numberUS213555 A
Publication typeGrant
Publication dateMar 25, 1879
Filing dateFeb 3, 1879
Publication numberUS 213555 A, US 213555A, US-A-213555, US213555 A, US213555A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Improvement in magazine fire-arms
US 213555 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

G. F. EVANS.

Magazine Fire-Arm.

'Pate'nted Mar. 25, 1879;

EN emhw v 2 Sheets-8heet 1.

G. F. EVANS. v Magazine Fire Arm; N. 0.. 213,555. Patented Mar. 25, 1879."

I Th9?) N.PETER8, PMOTO-UTHDGRAPHER. WASHINGTON, D. C.

2 Sheets-Sheet 2.

UNITED STATES PATENT OFFICE.

GEORGE F. EVANS, OF MECHANICS FALLS, MAINE.

IMPROVEMENT IN MAGAZINE FIRE-ARMS.

Specification forming part of Letters Patent No. 213,555, dated March 25, 1879; application filed February 3, 1879.

To all whomt't may concern:

Be it known that I, GEORGEF. EVANS, of Mechanics Falls, in the county of Androscoggin and State of Maine, have invented certain new and useful Improvements in Magazine Guns, of which the following is a specification, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to a revolving magazine for firearms, and is an improvement on the revolving magazine for fire-arms described and claimed in Letters Patent N 0. 84,685, granted to Warren R. Evans, and bearing date of the 8th day of December, 1868; and the object of myinvention is to prevent bottlenecked cartridges, or those having different diameter at the powder and ball sections, from becoming clogged or choked in the magazine,

and to facilitate the movement of the cartridges in the magazine toward the barrel. I

Heretofore the fluted shaft used in guns constructed under the said patent has been made with the flutings cut in a right line with the axis of the shaft, thus forming, in combination with the spiral partition, a cell of equal depth or diameter in all its parts for the cartridges, excepting where the point of the ball extends under the edge of the spiral thread described in that invention.

' My improved device constituting my invention consists in cutting the fluting of the shaft in a spiral form upon the shaft, or in giving it such form by twisting the shaft, after having been cut in the usual shape, thus forming, in combination with the spiral partition, cartridge-cells, each of which is of such form that the bottle-necked cartridge will be supported upon its convex bottom at its longitudinal center, and therefore the ball cannot drop down to the bottom of the groove and crowd or jam under the spiral partition, because the shell or tube which forms the outside of each' cell, bearing against the base of the cartridge, holds it up.

By constructing the fiuting in the shaft in the spiral form, as above stated, the capacity of the fluting to propel large or small car tridges by means of the spiral thread toward the barrel is not impaired, while the average depth of the cell that can be occupied by the cartridge is less, therefore rendering it possible to use with such cartridge-shells balls of a diameter smaller than the shell.

In the drawings, Figure 1 is a view of the improvement, with aportion of the surrounding tube removed to exhibit it more clearly. Fig. 2 is an end view, showing the form of the fluted shaft and the shell or tube. Fig. 3 represents another form of my improvement, drawn to a larger scale. Fig. 4 is an end view of the same.

A represents the shell or tube, with a portion removed to show the interior, having the spiral thread or partition I) fixed within it. C is the spirally-fluted shaft, which, when placed within the spiral partition in the tube, forms the cartridge-cells d d d, each of which has a convex bottom longitudinally.

At 0 will be seen the cartridge f in one of the cells d, with the wall of the fluting broken away in Fig. l to show the convex form of the bottom of the cell, on which the cartridge rests at e and c and also showing the head of the cartridge touching the shell A at the point 8, which holds the head down into the bottom of the fluting, and, in conjunction with the convex form of the bottom, holds the ball away from the latter, as shown, so that it cannot enter too far underneath the spiral partition in advance of it and jam or choke the fluted shaft 0 so as to interfere with its revolving.

GEORGE F. EVANS.

Witnesses:

WM. M. GREENLEAF, FRANK N. BOOTHBY.

What I claim as new and of my invention

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4888898 *Oct 20, 1988Dec 26, 1989Miller Michael KLarge capacity ammunition magazine
US4947572 *Aug 11, 1989Aug 14, 1990Miller Michael KLarge capacity ammunition magazine
US4962604 *Aug 11, 1989Oct 16, 1990Miller Michael KLarge capacity ammunition magazine
US4965951 *Aug 11, 1989Oct 30, 1990Miller Michael KLarge capacity ammunition magazine
US5335579 *Apr 12, 1993Aug 9, 1994Calico Light Weapon SystemsIndexing helical feed magazine
US5520171 *Apr 4, 1994May 28, 1996HelitekIndexing helical magazine
US5816444 *Oct 23, 1995Oct 6, 1998Calico Light Weapon SystemsRotor and ratchet assembly
US8291806Dec 27, 2010Oct 23, 2012Paul J RaelHelical ammunition magazine
US8813630Oct 22, 2012Aug 26, 2014Paul J RaelHelical ammunition magazine
EP0205494A1 *Dec 9, 1985Dec 30, 1986Rheem Australia Pty LtdDrum or pail closure.
Classifications
Cooperative ClassificationF41A9/72