US357660A - Fire-arm having automatic brace forthe breech-block - Google Patents

Description

(No Model.)

' N. D. POLSOM.

FIRE ARM HAVINGAUTOMATIC BRACE FOR THE BREECH BLOCK. No. 357,660. Patented Feb. 15, 1887.

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UNTTED STATES PATENT OFFICE.

NOAH D. FOLSOM, OF NEW HAVEN, CONNECTICUT.

FIRE-ARM HAVING AUTOMATIC BRACE FORTHE BREECH-BLOCK.

SPECIFICATION forming part cf Letters Patent No. 357,660, dated February 15, 1887.

Application tiled November 8, 1886. Serial No. 218,337, (No model.)

To all whom it may concern.-

Be it known that I, N oliH D. FoLsoM, acitizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Fire-Arms having Automatic Brace for the Breech-Block; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which i'orrn a part of this specification.

Figure l represents a Sectional side view of the arm, all parts in their normal condition.

Fig 2 represents a sectional side view'of the arm, the hammer at full-cock; and Fig. 3, an end View of the guard-plate, showing dog a and hammer A.

This invention relates to an improvement in Spencer' magazine lire arms,in which the magazine is arranged longitudinally beneath the barrel, and particularly to the arm known as the Spencer gum7 the mechanism of which is operated by a slide provided with a handle forward of the breech in a convenient position to be grasped by the hand and reciprocated in a path substantially parallel with the barrel.

The object of the invention is to provide a simple mechanism whereby the breech-block, when in its closed position and the hammer cocked, will be automatically locked, only to be released when the hammer is in its down position; and the invention consists in the mechanism, as hereinafter described, and re cited in the claim.

My invention is to be applied to the Spencer magazine fire-arm, in which the breechblock has a slight downward movement to receive the cartridge from the magazine, then is forced upward to place the cartridge in line with the barrel, and at the same time cocking the arm. This is a too well-known mechanism to require i'urther description in this specification.

After the barrel of the arm has been charged, the hammer at full-coelr,and the breech-block in its normal position, it is necessary that no accidental movement of the breech block should occur, as is liable to without being in some manner locked against accidental movement. As a preventive against such movement when the gun is ready to be fired, I arrange on the hammer,near the pivot-,an automatic stop, which consists of a dog, a, hinged to the hammer A,and provided with a spring, b, the tendency ot' said spring being to force the dog forward against a bearing-surface in the trame, as seen in the illustration, the nose of the dog projecting through an opening in the frame, and when in its forward position lies underneath the breech-block and prevents it from being moved toits rst downward position. This is the position ofthe dog when the hammer is cocked.

When the arm has been tired and the hammer down, as shown in Fig. l, the hammer in that down position forces the nose of the dog upward and away from the line of travel ot' the breech-block, as seen in Eig. l, thereby giving free action for the operation of the breech-block until thehammer is again cocked. NVhen the hammer is thrown down, it causes the nose ot' the dog to again press forward and come in the path ofthe breech-block. By this simple means ot' automatically locking the breech-block, as described, a good result is obtained. It prevents any accidental movement ot' the breech-block when the gun is ready to be tired, which is essential.

Having fully described my invention, I claim- In a magazine fire-arm of the character described,in combination with a movable breechblock, substantially as set forth, an automatic i stop consisting of a spring dog hinged to the hammer, as described, the nose ot' said dog, when the hammer is in its cocked position, lying in the path of the breech-block to prevent the downward movement, the hammer, when in the discharged or downward position, forcing the nose ot' the dog out of the path of the breech-block, all as and for the purpose described.

In testimony whereofl aflix my signature in presence ot' two witnesses.

NOAH D. FOLSOM.

Witnesses:

THOMAS F. MCKIEENAN, ETHAN C. MILLER.

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