US247377A - William mason - Google Patents

Description

' (No Model.) W. MASON.

BREEGH LOADING FIRE ARM. No. 247,377. Patented Sept. 20,1881.

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UNITED STATES PATENT OFFICE. A

- WILLIAM MASON, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE COLTS PATENT FIRE-ARMS MANUFACTURING COMPANY, OF SAME PLACE.

BREECH-LOADING l-IRE-ARM.

SPECIFICATION forming part of Letters Patent No. 247,377, dated September 20, 1881.

Application filed Mayfil, 1881. (No model.)

To all whom it may concern:

Be it known that I, WM. MASON, of Hartford, in the county of Hartford and State of Connecticut, have invented a new Improvement in Breech-Loading Fire-Arms; and I do hereby declare the following, when taken in connection with the accompanying drawings and the letters of reference marked thereon,

' to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in-

Figure 1, a sectional side view, showing the parts in their normal condition; Fig. 2, the same with the barrel tilted.

This invention relates to an improvement in that class of arms in which the barrel or barrels are hung forward and so that the breech end tips up to open the cartridge-chamber, and known as barrel tilting up at the breech, and with special reference to what are known as concealed hammersthat is to say, the hammer arranged within the receiver of the arm and cooked in the act of tilting the barrels.

The invention consists in a rock-shaft arranged beneath the barrels transversely thereto, and substantially the axis upon which the barrels turn, and in connection with the barrel, so that as the barrels are tilted the rockshaft will turn upon its axis, combined with a lever hung to said rock-shaft, extending rearward so as to engage the hammer below its pivot, and a V-shaped mainspring, the doubled end of 'which is hinged to said lever, the open ends of the said spring extending forward to engage with the hammer, as more fully hereinafter described.

A represents the frame of the receiver, extending forward beneath the barrels B, as at C, the forward end rounded to receive the forearm D, in substantially the usual manner. In a recess in the receiver the hammer E is hung upon a pivot, a, the upper end or nose arranged to strike through an opening, b, in the breech end of the receiver, or may be upon a firingpin.

F is a transverse rock-shaft arranged at the forward end of the receiver, beneath the barrel, and forming substantially the axis on which the barrels turn in tilting. On the said rockshaft a cam-like projection, f, is formed upon the upper side, and a similar cam-projection,

h, below, and on the under side of the barrel a projecting lug, l, is formed, to hook over the rock-shaft, its front surface engaging the cams f h, as shown, so that when the barrels are tilted the surface of the lug above the pivot bears against the cam f and turns the rock-shaft forward. Then, in returning the barrels, the surface of the lug on the Other side hears upon the cam h and turns the rock-shat'tin the opposite direction.

H is a lever, hung to the rock-shaft above its axis, as at m, and, extending rearward, is provided with a latch shaped nose, n, to engage a corresponding notch, r, on the hammer, below its pivot, and so that asthe shaft is rotated in tilting the barrels the lever will be drawn forward from the position at Fig. 1 to that in Fig. 2 and turn the hammer to fullcock and cause it to engage with the sear L. Then, when the barrels are returned, the lever H also returns away from its engagement with the hammer.

The mainspring is of the usual V shape, its double end attached to the lever H, as at s, and should be in a position in line with the pivot m, or slightly above it. The end tot one arm of the spring rests free against the receiver. The other arm, u, bears upon the hammer through the interposition of a strut,

w. In the movement of the rock-shaft in cock ing the-hammer, as before described, the mainspring is drawn forward, so that the position of the strut is changed from the vertical position,which it occupies when the barrels are closed, as seen in Fig. 1, to a forward-inclined position, as seen in Fig. 2. Then when therockshaft returns, as in closing the barrel, the

spring is correspondingly carried to the rear, 0

which forces the strut to into a vertical position, or nearly so, as seen in broken lines, Fig. 2. In this movement of the strut the lower arm of the spring is raised or compressed toward the other arm, which completes the ap- 5 plication of the power of the spring, the movement in cocking only partially compressing the spring. Thusthefull power of the spring is applied by the combined opening and closing movement of the barrels. The mainsprin g, being attached, as described, to the lever, tends to hold that lever up to its engagement with the hammer, so that the mainsprin g serves the double purpose of a spring for the hammer and a spring for the lever; but the mainspring may be applied to the hammer independent of the lever and the lever held in its place by asprin g beneath it; or the lever may be used without a spring by the arrangement of a support, over which it will ride-as, for instance, as in dicated in broken lines at m, Fig. 2.

It will be understood by those skilled in the art that, while speciallyv intended for double barreled arms, this invention may be applied to single-barrel arms.

In another application for patent, which I have entitled Case A, I have shown the rockshaft arranged in the same manner as in this application, but with a different intermediate mechanism. I therefore do not in this application make broad claim to the transverse rockshaft rotated by the opening and closing movements of the barrel to cock the hammer.

I do not wish to be understood as broadly claiming a link or lever which operates upon the hammer to set it at full-cock as the barrels are tilted, as such, I am aware, is not new; but

What I do claim is- 1. In fire-arms in which the breech is opened by the barrel tilting up at the breech, the com- 2. In fire-arms in which the breech is opened V by the barrel tilting up at the breech, the combination therewith of a transverse rock-shaft arranged substantially at the axis upon which the barrel turns, an extension from thebarrels into connection with said rock-shaft, so that as the barrels are tilted said shaft will be turned, a hammer hung at the rear, with a lever hung to said rock-shaft above its pivot and extending rearward into engagement with the hammer belowv its pivot, whereby the rotation of said rock-shaft in the act of tilting the barrels turns the rock-shaft and cocks the hammer, and a V-shaped mainspring hung by its doubled end to said lever, its open endarranged to bear upon the hammer, substantially as described.

' WILLIAM MASON. Witnesses:

E. F. BODWELL, 'SAM WALKER.

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