US247375A - William mason - Google Patents

Description

(No Model.)

W. MASON.

BREEUH LOADING FIRE ARM.

No. 247,875. Patented Sept. 20,1881.

' rel, so that as the barrels are tilted the rock- UNITED STATES PATENT OFFICE.

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

BREECH LOADlNG FIRE-ARM;

SPECIFICATION forming-part of Letters Patent No. 247,375, dated September 20, 1881.

Application filed May 21, 1881.

- in Breech-Loading Fire-Arms; and I do here'- bydeclare the following, when taken in connection with the accompanying drawings and the letters of referencemarked 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, showingthe parts in their normal condition; Fig. 2, same,

showing the hammer as cocked Fig. 3, de= tachedview.

This invention relates to an improvementin thatclass 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 whatarek'nown as concealed hammersthat isto say, the hammer arranged within the receiver of the arm and cocked in the act of tiltin g 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 barshaft will turn upon its axis, combined with a lever pivoted between the hammer and shaft, one arm of the lever in connection with the rock-shaft forward of its pivot, so that raising the breech end of the barrels depresses the for ward arm of the lever, the other arm of the lever in connection with the hammer forward of its pivot, so that as the'breech end of the barrel is raised the hammer is turned to fullcock, 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 upona pivot, a,the upper end'or nose arranged to strike a firing-pin, b or it may be constructed with a projection which will pass through an opening in'the breech end of the receiver to strike the primer.

F is a transverse rock-shaft arranged at the (No model.)

forward-end of the receiver, beneath the barrel, and-forming, substantially, the axis'on which the barrels turn in tilting. On the'said rock-shaft a cam-like projection, f, is formed upon the upper side. and a similar cam-projection, 71, below, and on the under side of the barrel a projecting'lug, l, is formed to hook over the rock-shaft, its'frontsurface engaging vthe cams fh, as-shown, so that when the barrels are tilted thesurface of thelug above the pivot bears againstthe' cam fand turns the rock-shaft forward; then, in returning the barrels, the surface'of the lug on the other side bears upon the'cam h and turns the rock-shaft in the opposite direction. Between the rocksh'aftand the hammer a lever is hung upon a pivot,n, one arm, H, extendingforward through an opening, m, in the rock-shaft, so as to take a bearing in the opening or cavity forward of the center of the rock-shaft; The other arm extends rearward, terminating in the shape of Ta stirrup. 1', (see Fig. 3,) to engage beneath the arm P, which extends forward from the hammer, and so that the engagement of that arm L of the lever will beforward'of the pivot of the hammer.

The mainspriirg t is' of the usual V shape, one end, d, resting against the under side of the arm L of the lever, near the hammer, the other end, 0, hung to the arm P of the hammer. Preferably the opposite or doubled end, 8, is seated in a bearing on the under side of the lever, near its pivot. I

The operation of this arrangement is as follows: When the barrels are tilted the rockshaft turns as first described, and because the bearing of the arm H is forward of the center of the shaft it depresses that arm and raises the arm L, which lifts upon the arm P of the hammer, turning the hammer to full-cock, as seen in Fig. 2. In this movement of the lever it will be observed that the bearing-point d of the mainspring is raised with the lever, but to a less extent than is the end 0 of the spring, which is in connectionwith the hammer; hence the spring has been compressed only to the extent that the end 6 has been raised. When the barrels are returned to their closed position the lever returns also to its normal position, as seen in Fig. 2, broken lines. In this movement the arm 01 of the spring -will be forced toward 'the other arm, thus completing the application of the full force of the spring tothe'hammer for its blow when released. This arrangement of the lever and spring distributes the power of cooking the hammer over both the opening and closing movements.

Instead of'seating the doubled end of the spring in the lever, as at s, the other end, 11, may be engaged with the lever so as to retain its place Without connection at the doubled vend; or instead of applying the mainspring' between the lever and the hammer, the mainspring may be applied directly to the hammer independent of the lever.

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

In another application for patent, filed May 12, 1881, I have shown the rock-shaft 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 rock-shaft rotated by the opening and closing movements ofthebarrel to cock'tlie hammer; but

What I do claim is- 1. In fire-arms inwhich the breech is opened 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 the barrels into connection with said rock-shaft, so that as th e barrels are tilted said shaft will be turned, and a hammer hung at the rear, with a lever be tween said rock-shaft and hammer, one arm of which engages with said rock-shaft forward of its center, the other arm of said lever engaging with the hammer forward of its pivot, whereby the rotation of said rock-shaft in the act of tilting the barrels turns the rock-shaft and cocks the hammer, substantially as described.

2. In fire-arms in which the breech is opened act of tilting the barrels turns the rock-shaft and cocks the hammer, and a mainspring one end of which bears upon the arm of thelever near the hammer, the other end of the spring engaging the hammer forward of its pivot, substantially as described.

3. In fire-arms in which the breech is'opened by the barrel tilting up at the breech, the combination therewith ot' a transverse rock-shaft arranged substantially at the axis upon which the barrel turns, an extension from the barrels into connection with said rock-shaft, so'th at as the barrels areitilted said shaft will be turned,

a hammer hung at the rear, with a lever between said rock-shaft and hammer, one arm of which engages with said rock-shaft'forward of its center, the other arm of said lever engaging with the hammer forward of its pivot, whereby the rotation of said rock-shaftinthe act of tilting the barrels turns the rock-shaft and cooks the hammer, and a mainspring'one end of which bears upon the arm of the lever near the hammer,'the other end of the spring engaging the hammer forward of its pivot, the doubled end of the spring seated on the lever near its pivot, substantially as described.-

' WILLIAM MASON.

Witnesses:

E. F. BoDwELL, SAM. WALKER.

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