US384277A - Breech loading fire arm - Google Patents

Description

(No Model.)

H. M. POPE.

BRBEGH LOADING FIRE ARM.

Patented June 12, 1888.

y Q. 2 i y l E "tgb O E m y E UNITED STATES PATENT OFFICEc HARRY lf. IOlll, F HARTFORD, CONNllU'lICU'I, ASSIGNOI 0F ONE-HALF 'lO llUDlilCY S. SlCYlOUlt, OF SAME PLACE.

BREECH-LOADING FIRE-ARM.

SPECIFICATION forming part of Letters Patent No 384,277, dated June l2, 1888.

Application filed January ll, IFFR.

T0 all 10710711, it may concern:

De it known that I, HARRY M. Porn, of Hartford, Connecticut, have invented a new and useful Improvement in Brcech-Loading Guns, of which the following description and claims constitute the specification, and which is illustrated by the accompanying sheet of d raw n gs.

rlhis invention consists of a separable coinbination ofthe receiver and the gnubarrel of a gun; and it consists, also, ofau adjustable com bination of the firing-pin and the breech block of a gun.

The object of making the barrel separable from the receiver is to admit ofthe easy suhstitntion of barrels of various calibers for each other in the saine gun; and the object of the specified combination ot' the firingpin and the breeclrblock is to make the firingpin adjustable in position, so that it will operate upona center-fire cartridge or a ri nrtire cartridge, as i may be desired.

Figure l ofthe drawings isaside fragmentary view of a gun containing my improvements. Fig. 2 is a central horizontal longitudinal section of the receiver and of the rear ward portion of the gnnbarrel and of the sleeve which unites them. Fig. 3 is a central horizontal longitudinal section of the forward part ofthe receiver and of the rearward part of the guirbarrel and of the sleeve when the latter is upon the barrel, but is not upon the receiver. Fig. 4 is a view of a modified form of what is shown in Fig. 2, and showing only the receiverand the sleeve in section. Fig. 5 is a central vertical fragmentary section ofthe breech-block,ishowiug the firing-pin within it and opposite t0 a ceutcr-re cartridge. Fig. G is the same as Fig. 5, except that the bushing which holds the firing-pin has been turned one hundred and eighty degrees upon its axis, so as to bring thc point of the firing-pin oppoA site the riin of the cartridge. Fig. 7 is a. vcrtical crosssection on the dotted line of Fig. 6.

The letter A indicates the receiver, while the letter B denotes the gun-barrel, and C is the sleeve which unites them. The barrel is guided to its scat in the receiver by means of its slot D and the point of the set-screw E.

Serial No. 260.109. (No modeLl l The letter F indicates l he hreeclrhlock, while (t is a bushing closely fitted within an aperturc which extends through the breech-block backward from the bore of the barrel. The axis of that aperture is parallel with the axis of the bore ot' the barrel, but is located at a distance below the latter axis corresponding with one quarter of the diameter of that bore. The firing-pin H works in an aperture which passes through the bushing diagonally to the axisthercof, the rear end ot' its axis being co incident with the axisof the bushing, but the forward end of the axis of the tiring-pin being placed at a distance above the axis of the bnshing corresponding with one-quarter ofthe diaineter ofthe bore of the barrel when the parts are in the position show n in Fig. 5, and correspondingly below that axis when the parts are in the position shown in Fig. (i.

The tiring-piu is limited in its longitudinal motion in the bushing by the pin I, working in the recess J', and the bushing is provided with the recess K and a corresponding recess on its opposite side for the alternate reception of the set screw L, which is tapped into the side of the breech-block F. The bushing is also provided with the recesses M and N upon its rearward face for the reception of a bifureated implement by means of which the hushing may be turned one hundred and eighty degrees upon its axis, so as to shift the point of the tiring-pin from its position shown in Fig. 5 to that shown in Fig. (i, or vice versa, the set-screw L being withdrawn from one of its recesses to permit that shifting, and then being inserted in the opposite recess to hold the bushing in its new position.

The cartridge is represented by the letter O.

The sleeve C in Figs. 2 and 3 has an exterior diameter which is preferably identical with the horizontal thickness of the receiver A, and has its interior diameter of two different sizes, the larger one ofthe two being at the rearward end of the sleeve. That larger di aineter is sorewthreadcd to correspond with the screw-th reads on the forward reduced end 95 ofthe receiver, while the smaller diameter of the sleeve is screw-threaded to correspond with the screw-threads on the adjacent part of the guirbarrel. Thescrewthrcadson the receiver exceed in piteh those on the gun-barrel1 so that when the sleeve C isturncd baek ward from its position in Fig. 3 to that in Fig. 2 it will travel longitudinallyl along the receiver faster than it travels along the lgun-lmtrrel, thnsdrawing the guirbarrel into the receiver Somewhat slowly', but very powerfully. I recommend that the threads upon the receiver be twenty fou r to the inch, while those upon the gun-barrel arc twen tty-six to the inch; but it is evident that a greater oralessdiversity| than this between the pitches of' the two serewthreads will operatein the same way. '1`hc.li[`ferential screw-threads thus constructed upon the receiver, the gunbarrcl, andthe sleeve constitute a means of conveniently fastening thc barrel within the receiver with great rigidity, and with no larger' expenditure ofpower than may be conveniently exerted by the hand of the gunner upon the exterior milled surface ot' the sleeve.

The modified form shown in Fig. 4 differs from that shown in Figs. 2 and 3 in that the screw-threaded union between the sleeve and the glnrbarrel is omitted, and the annular shoulder l upon the gun-barrel and the annu lar ange (g upon the sleeve is substituted therefor. This construction is inferior to the other; but it is superior to any third method known to me of removably fastening a gun barrel in the receiver of a gun.

I claim as my invention- 1. The combination of the receiver A, pro vided with a forward extension, the barrel I, provided with a rearward extension accurately and removably fitted within the receiver, and the sleeve tf, interiorly serc\\'threaded and tit ted to the exteriorof the forward projection y ot' the receiver and to the exterior of the adjaeent part of the barrel,and adapted by being,r

turned upon its axis to rigidly fasten the barrel to the receiver, all substantially as described.

2. The combination ofthe receiver A, proA vided with an exteriorly screw-threaded forward extension, the barrel B, removably fitted to the receiver and provided with an exterior screw-thread ofsmaller diameterand less pitch than that ofthe receiver A, and the sleeve C, provided at one end with an interior screwthread conforming to the screwthread of the receiver A, and at'. the other end with an interior screwthread conforming to the sercwthread of the barrel l, all substantially asde scribed.

3. The Combination of the breeelrbloek F, the bushing (l, adjustably fitted within the breeelrbloek, and the tiringv pin Il', working` within that bushing` diagonally to the axis thereof, substantially as described.

January i2, 1838.

HARRY M. POPE.

XVit nesses:

ALBERT H. WA Lann, FRANK II. Prnnrou'r.

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