US274435A - Breech-loading gun - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1. A. T. BROWN.

BREEGH LOADING GUN.

Patented M31220, 1883.

(No Model.) 2 Sheets-Sheet 2. A. T. BROWN.

BREEOH LOADING GUN. No. 274,435.- Patented Mar. 20,1883.

NlTED STATES PATENT @rrrcat ALEXANDER T. BROWN, OF SYRACUSE, NEW YORK.

BREECH-LOADING GUN.

SPECIFICATION forming part of Letters Patent No. 274,485, dated March 20, 1883.

- Application filed February 9,1883. (No model.)

To all whom it may concern Be it known that I, ALEXANDER T. BROWN, of Syracuse, in the county of Onondaga and State of New York, have invented certain new and useful Improvements in Breech-Loading Fire-Arms, of which the following is a specification, reference being bad to the accompanying drawings, in which- Figure l is a view of the breech of the gun with the stock removed and the barrelslocked; Fig. 2, a longitudinal section of the breechblock and action with the stock and barrels removed; Fig. 3, a side view of the locking device removed from the breech-block, with the extension-rib in position for locking; Fig. 4, a rear perspective of the rotary lock and firing-pins separated from the breech block; Fig. 5, a longitudinal section of Fig. 1; Fig. 6, a top plan view of the breech block; Fig. 7, details of the extracting and joint-check mechanism.

My invention relates to that class of breechloading fire-arms in which the mechanism for locking the barrels when the gun is closed is operated by a top lever.

The objects of it are, first, to createa looking mechanism in which all horizontally-sliding bolts and all notches in the lug beneath the barrels to receive the locking-bolt are dispensed with second, to throw back the firingpins by the locking mechanism when the gun is unlocked; third,to eject the extractorby an eccentric in the lug beneath the barrels, and also to catch the barrels when broken down, and relieve the hinge-bolt from the dropping strain; fourth, to keep the rotary or oscillating lock open when the gun is unlocked and broken down ready to --receive the extensionrih, until the rib in its downward movement in closing the gun reaches or nearly reaches the bottom of the rib-slot in the breech-block and in the rotary lock fifth, to lock the gun by a rotary or oscillating lock engaging with an extension-rib; sixth, to lock the gun by a rotary lock engaging with an extension-rib and actuated by a lever; seventh, tocreate a cylindrical rotary lock slotted to receive an extension-rib; eighth, to actuate and control the action by a springlocated in a slot within the breech-block closed by the trigger-plate.

It is constructed as follows:

A is the breech-block.

B is the barrel or barrels of the gun. U is the extension-rib, constructed rectangular in section, and with the recess a in the 7 back end, and the mortise I) through the rib horizontally. This rib fits closely into a rectangularslot or mortise, d, in the breech-block.

D is the rotary oroscillating lock, constructed in the form of a cylinder, closed at one end and fitting loosely in a hole drilled from the back of the breech-block, under the tang, forward horizontally until it is deep enough to receive the rotary lock. Through the wall of this lock two slots, 0 .r,-connected at right angles to each other are out, together making a T-shaped aperture, as shown in the drawings. That slot 0 corresponding to the top of the T is longitudinal of the rotary lock, and of the same width as the rib-slotin the breech- 7o block. The slot 00 is circumferential, and of such width as to receive freely the bar 3 between the mortise and recess a in the rib G and the tenon in the mortise b. The shell of the cylinder of the lock is of almost the same thickness as the heightof the recess aor mortise b. r

E is-the lever by which the lock is operated, mounted upon the tang F of the breech-block and connected to the upright rodf, standing 8:) a little back of the breech-block, stepped at its lower end into the trigger-plate it, its upper end passing up through the tang.

His a yoke with an arm attached, which y'oke fits upon the rodf, and is fastened to it 8 by a pivotal rivet or screw, as shown in the drawings. The outer end of thisyoke-arm fits freely in a hole in the base of the rotary lock D, as shown in Figs. 1, 2, and 4.

I is an upright piu,-having a shoulder on one side, fitted into a hole in the breech-block in the bottom of the rib-slot d, and having a spring behind it, as shown in Fig. 2. Arecess is cut in the edge of the cylinder of the rotary lock large enough to receive the shoulder of the pin I. Upon the lower end of the rodfis a collar, 2', having a shoulder or lug on one side; and 7c is a spring fitting into a recess in the bottom of the breech-block, just above the triggerplate h, which closes the bottom of the too recess.

K K are the firing-pins, having rods or pins 1 fitted into the sides of their heads. The

points of these rods 1 fit into cam-recesses m and opening at aim the slot in the frame part of one on each side of the lock D in its periphery I adjacent to the base. These recesses m are straight on that side longitudinal of the lockcylinder D and curved on the other, as shown in Figs. 2, 3, and 4.

M is an eccentric having a hole drilledin its periphery to receive the plug n and the spring behind it, as shown in Fig. 5. This plug a is hollow in its inner end to receive one end of the spring shown, and has the shoulder 0 on its outer end. This shoulder is square on its front and two adjacent sides, while its top is rounded off from the front backward. In the edges of theeccentric are the bearing-pins pp. This eccentric lies in a hole drilled crosswise through the lug S beneath the barrels, and is of the same width as the lug. An opening is cut from this hole through into the recess 'in which the extractor-pin lies, and large enough to permit the shoulder 0 to pass through it into the extractor-recess and work freely.

N is the extractor, fitted into a recess between andbeneath the barrels in the usual manner.

R is the hinge-bolt.

W is an L-shaped slot cut in the walls of the breech-block, which receives the lug S. This slot is cut in both walls, first downward, and then forward at right angles toward the front end of the frame. This slot is large or wide enough to'freely receive the bearing-pins p on the eccentric M.

It is operated as follows: When the parts are put together and the gun is closed and locked, the operation of unlocking the gun is as follows: The end of the lever E is pressed to the right. This revolves the rod f, carrying with it the yoke H and its arm. As it revolves the yoke-arm bears againstthe side of the hole in the base of the rotary lock D and causes it to rotate until the rib 0 comes against the unbroken side of the upper part of the T- slotthat is to say, into the slot ereleasing the mortise b and recess a from the tenons and slot 00. Then the barrels are ready to be broken down, as shown in Fig. 5. At the same time that the rib 0 reaches the releasing-point the'shoulder on the pin I is thrown by the spring behind the pin into and engages with the recess in the edge of the rotary look, as shown in Fig. 3; and by such engagement the rotary lock D is held in the unlocked position, the tension on the spring it, created by the revolution of the rodf throwing the shoulder upon the collar 6 against the extremity of the spring, is retained, and the lever-arm is held over to the right. In this position the upper end of the rod I above the shoulder projects upward into the open end of the rotary lock D, as seen in Fig. 3. When the gun is closed and locked the pins 19 on the eccentric M lie in the slot W toward its center; the extractor N is back in its recess, with the front side of the shoulder 0 of the plug a behind it and bearing against it. This eccentric M and extractor N remain stationary until the barrels are unlocked. Then, as the gun is opened and the lug S raised, the pins 0, bearing against the upper side of the slot W' forward of the open part a, tend to retard the movement of the barrels, and would wholly retard them were it not that this retention imparts a rotary motion to the eccentric M, which permits the upward movement of that portion of the barrels behind the hinge and adjacent to the eccentric. At the same time this motion of the eccentric throws the shoulder 0 forward against and ejects the extractor N. This motion continues, and the barrels continue to rise at that point until the edge of the plug 01. in front of the shoulder 0 comes against the wall of the recess within which the eccentric M lies until the point of the shoulder 0 disengages from the extractor N, when the shoulder 0 comes against the lug S, as shown in Fig. 5, and catches the barrels or stops their movement entirely, all sudden strain being thus taken off from the hinge-bolt It. At the same time, while the movement of the lever E sidewise causes the rotation of the rotary lock D, this rotation brings the curved side of the recess m to bear against each of the rods I attached to the firing-pins K, and as the rotation continues forces the pins along the curved face backward toward the base of the rotary lock D. In their backward movement the rodsl carry with them the firing-pins K, withdrawing them far enough so that they are out of the way of the barrels and extractor when the gun is opened.-

- The operation of closing or locking of the gun is as follows: The rib G is forced down into the slot d in the breech and the slot 0 in the rotary lock D until it strikes the upper end of the pin I. As the rib is further forced down it depresses or pushes the pin I downward until just about the time when the rib reaches the bottom of the slot d on the lower side of the inside of the rotary lock D, the shoulder on the pin I escapes from its recess, and the released rotary lock D, through the tension upon the spring 76, is rotated, so that the slot 00 receives the bar 3 between the recess a and the mortise b, and the tenons on each side of the slot as fill the recess a and mortise b, and the lever E flies back to its normal position. All of the parts take practically the positions shown in Fig. 2. At the same time the extractor is forced back, and as the lug S descends the point of the shoulder o in the plug 1?. of the eccentric M is released from the lug, slips behind the end of the extractor, and by the motion of the eccentric the plug it finally assumes nearly an upright position when the gun is closed, the spring behind the plug forcing the point of the shoulder 0 upward into the extractor-recess behind the extractor. gun is open the extractor can be pushed back IIS It will be readily seen that when the.

I axis in the direction of the axis of the gun,

and having the T-shaped slot combined with the extension on the barrels,substantially as stated;

3. A locking device for a breech-loading fire-arm, consisting of a rotary lock actuated by the operation of a top lever connected to an upright revolving post behind the breechblock, and controlled by a spring, in combination with an extension-rib, substantially as do scribed.

4. The oscillating locking device having cam-surfaces, as described, combined with firing-pins having a bearing on said camsurfaces, substantially as described.

5. In combination with the oscillating locking-bolt and rib, the spring-catch adapted to engage positively with the lockin g device until released by the rib, as set forth.

6. The oscillating locking-bolt having notch, the spring-pin engaging said bolt positively by entering the notch, and the rib on the barrels operating to disengage said pin, substantially as described.

7. The oscillating bolt slotted and notched, as described, the spring-pin, the operating-lever, and the extension on the barrels, all in combination, substantially as stated.

8. The lug on the barrels containing oscillating pin, as M, which is provided with eccentricextensions engaging in slots in the stock or frame to operate as a stop, as stated.

9. The lug on the barrels containing the oscillating pin li'aving eccentric extensions eugaging slots in the stock or frame, combined with the cartridge-ejector by suitable connect ing mechanism, substantially as shown and set forth.

In witness whereof I have hereunto set my hand this 2d day of February, 1883.

ALEXANDER '1. BROWN.

In presence of- C. W. SMITH, L. 0. SMITH.

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