US206279A - Improvement in magazine fire-arms - Google Patents

Description

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W. TRABUE. Y 'Magazine Fire-Arm.

Patented July 23, 1878.

UNIT-ED STATES PAT-ENT OFFICE.

WILLIAM TRABUE, OF LOUISVILLE, KENTUCKY.

IMPROVEMENT IN MAGAZINE FIRE-ARMS.

Specification forming part of Letters Patent No. 206,279, dated July 23, 1878; application filed March 14, 1878.

To all whom 'it may concer-n Beit known that I, WILLIAM TRABUE, of Louisville, in the county of Jefferson and State ot' Kentucky, have invented certain new and useful Improvement-s in Bolt-Guns; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, making a part of this specification.

My invention relates to that class of breechloa-ding guns known as magazine bolt-guns,77 in which a series of chL rges of iixed ammunition are located within a ma-gazine and automatically fed into a receiver and charged into the barrel by the reciprocation of a breechclosing bolt, and successively tired by a firin gpin arranged within said bolt.

The object of my invention is to simplify the construction ot' this class of fire-arms and to render the actions ot' the several parts positive and accurate, and to prevent premature discharges and accidents.

Vith these ends in view my invention consists ot' a double-chambered swinging` carrier, hinged at one side, in combination with a reciprocating bolt and means for causing the required movement ot the carrier to receive a charge and eject the exploded shell.

My invention also consists in the peculiar combination and arrangement of the tiringpin with the reciprocating breech-bolt, whereby the iirin g-pin is guarded against accidentally exploding the charged shell; a-nd my inventionalso consists in the peculiar construction and arrangement ot' the several parts, all as will be hereinafter and in det-ail explained.

In the drawing I have only shown so much ot' a breech-loading gun as is necessary to illustrate the features of my invention. All parts not shown or described are such as are common and well known inV this class of lireldlllS.

Figure 1 represents a perspective view ot so muchof a gun as is necessary to show the shell brought into position to be discharged from the receiver after .it has been retracted from the barrel by lthe rearward movement of the breech bolt. Fig. 2 is a similar view, showing the parts in slightly different position, with the shell (shown at Fi fr. l) just ejected, and a new shell from the magazine in position in the receiver to be charged to the barrel by the forward movement of the bolt. Fig. 3 is a side elevation of the bolt, with the rear portion in section, showing the arrangement of the handle and tiring-pin; and Figs. 4, 5, and 6,v perspective views, showing the bolt-handle and tiring-pin in the different relative positions assumed in the ordinary movements of the breech-bolt.

Similar letters indicate like parts in the several gures.

A represents the gun-barrel. and B the ordinary magazine-tube arrangedl underneath the same. C is the receiver, formed with two chambers, a b. The former is designed to receive the exploded shell as it is withdrawn by the retraetor from the barrel, and hold it in position to be flipped7 or ejected as the receiver is tilted or swung on its hinge-joint, and the latter to receive Va new charge from the magazine and carry the same into alignment with the barrel as the exploded shell is thrown out. These two chambers connect by a channel, the walls ot' which are in parallel planes in arcs struck from the center of motion of the receiver, and the breech-bolt D is cut away correspondingly to enable the receiver to vibrate in an obvious manner.

The receiver O is hinged or pivoted at E, and has in its rear face a curved groove or cell, F, adapted to receive one end of a bellcrank lever, G, which is suitably h'ung upon a pivot at c.

The breech-bolt D is cut away centrally, as clearly seen at d, Figs. l, 2, and 3, to permit the receiver O to drop back to the position shown at Fig. l from the position shown at Fig. 2 aft-er the new shell I-I has been charged into the barrel. At each end of the cut-away portion d are formed cam-shaped projections or grooves, which, coming in contact with the upper end of the bell-crank lever Gr, cause it to alternately vibrate to lift and return the receiver C into the positions shown, respectively, at Figs. 2 and 1.

I-I is the tiring-pin, which is arranged centrally within the bolt l), the rear end of which is cut away annularly to receive the bush or collar I of the handle J. The rear end or shell of the bolt is also cut at its lower side, as seen at c, to form a groove to receive a short stud or teat,f, on the firing-pin', to prevent any rotation of the pin within the bolt.

K is a screw-pin passing down centrally through the handle J, and projecting into a triangular cell, L, in the liring-pin. This angular cell is of such shape that, as the handle J is swung up into position to unlock and withdraw the bolt, the contact of the pin K bearing against the left side of the angle will cause the firing-pin to travel slightly backward (as the teatf prevents its rotation) until the pin K reaches the position shown at Fig. 6, which will, as clearly seen, prevent theforward movement of the firing-pin and hold it in the position shown in dotted lines at Fig. 3.

Then the bolt is moved forward to charge the shell, and the handle J turned down to look the parts in position, the pin K moves from the position seen at Fig. 6 to the position shown at Fig. 4, so that when the rear end ofthe firing-pin is struck b v the hannner it is free to be projected forward into the po sition shown at Fig. 5, a distance equal to one of the long sides ofthe triangle L.

rllhe operation of the receiver is as follows: The bolt having been withdrawn, as seen a-t Fig. l, the retraetor-catch g has withdrawn the exploded shell into the top chamber a of the receiver. Continuing the rear movement ofthe bolt, the projection h strikes the upper arm of the lever G just as the front end of the bolt clears the rear face of the receiver, and, vibrating' said lever, the arm within the curved cell in the rear face of the receiver throws it up on its pivot or hinge into the position seen at Fig. 2, which flips or throws out to the side the exploded shell, and at the same time carries the lower chamber, I), which has previously received a charge from the magazine, into alignment with the barrel A, the necessary movement of the handle J to retract the bolt having effected the firing-pin, as before described. As the bolt is now shot forward from the position seen at Fig. 2, it necessarily forces the shell in the chamber b into the barrel, and just about the time the shell is going home thc projection or groove 17 at the rear end ofthe cut-away of the bolt, coming in contact with the free arm of the lever G, vibrates it in a reverse direction to that already described, and causes its other end to throw the receiver C back to the position seen at Fig. 1, the cut-away portion d of the bolt permitting this movement, as hereinbefore described.

It will be observed that all the movements are positive, and that there is but little frietion, and that all lifting movements are in the ares of circles and by leverage.

The bolt being cut away, as described, renders it less liable to become buckled7 by repeated discharges of the gun.

I am aware that bolts have been narrowed or cut away in order to permit vertical reciprocation of the carrier, and do not wish to be understood as claiming, broadly, the idea of cutting away the bolt.

VhatI claim as new, and desire lo secure by Letters Patent, is-

1. The swinging carrier C, formed, as dcscribed, with the two chambers a b, and a communicating channel between said chambers, and having the groove F at one end, in combination with the reciprocating bolt and bellcrank lever ("r, substantially as and for the purposes set forth.

2. In. combination with the bolt l), having the cut-away d and bevels l1 fi, and the lever G, adapted to be vibrated by the reciprocation ofthe bolt, the curved groove or slot F, in the rear of the swinging carrier, substantially as and for the purposes set forth.

3. The bolt D, cut away on either side in concentric arcs, whereby the carrier is permitted to swing from a center, as set forth.

4. rlhe carrier C, having the sides of the channel between the chambers c b in concentric arcs, coincident with the sides of the cutaway portion of the bolt, substantially as and for the purpose set forth.

In testimony whereof' I have hereunto set myhand and seal this 4th day of March, A. l). 1878.

IVILLIAM ll -AB'UE.

In presence of- WM. C. McIN'rinn, WAT/mn l). .TnNNnxz

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