USRE7881E - hotchkiss - Google Patents

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Publication number
USRE7881E
USRE7881E US RE7881 E USRE7881 E US RE7881E
Authority
US
United States
Prior art keywords
cartridge
loading
barrels
bolt
chamber
Prior art date
Application number
Other languages
English (en)
Inventor
B. Botohsibs
Publication date

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  • lMPROV EMENI m MACHINE OR'BATTERY suns- 1'0 11 m. a may Be it known the the city, county, an
  • Figure 1 is a side elevation of the entire with the exception of the car- I rings on which it is mounted. The latter may he understood tobe of any ordinary or suitable construction adapted to support it properly,
  • Fig. 2 is a crossseetiOn.
  • Fig. 3 is acentral longitudinal section through the breech po rtion alone. It willhe understood that this is one and one half times Fig cross-section Fig. 5
  • Fig. 4 is a represents a portion of worm-thread.
  • Figs-6 breech part viewed is a longitudinal seeb part. This is taken somewhat axis of the farthest barrels; and
  • Figs. 8 and 9 represent details detached.
  • Fig.- 8 is a view e gun, representing one the mechanism for forcvl; ing in the cartridge.
  • Fig.9 is a plan view of the loading-bolt orch arger, with the cartridge- -controlling gate above it. All these figures, from 4 to 9, inclusivegare on the same scale .as Fig. 3.
  • A is a stout frame-work, turning on a center, E, and supports a yoke, D, at the front, and a massive breech-piece, G, firmly'fixed thereto at the rear.
  • F G are stout disks or circular frames, which support the series of barrels B B, and
  • H is a stout axis, which supports the whole, and allows it to turn as required.
  • K is a. wheel, firmly fixed on the rear exthe axis H, and P are stout pins extending rearward therefrom, and by means of which the axis, with its series of barrels, is
  • the mechanism which turns the barrels, operates the loading and discharging mechanism, and also removes the shells of the cartridges after they are fired, is all contained within or attached to the stationary breech: piece C, which, it will be observed, is massive at'its front face to receive and resist the concussions ,due to the successive explosions of the cartridges, but is hollow in its rear portion. Its extreme rear is closed by a removable piece, L, as represented.
  • the cartridges are formed with flanged shells, of copper or analogous material, in the manner now extensively adopted in such cartridges, and pro vided with fulminate and provisions for ignitv iug the same by a blow at the center, which needs no special description.
  • the front face of the stationary breech-piece C is cut away to provide a curved guideway, R.
  • This guideway communicates with the front end of the loa1liiig-chamber,and is inclined so as to force the cartridge fully into the firing ehamber of the barrel as the barrel moves in its circular path to a position for discharging the cartridge.
  • the stationary'breech-piece 0, against. the upper central face of which the cartridge is carried by therevolving series of barrels and supported at the moment of firing, is 'fitted with a steel faceplate, I, which is perforated otrusion of the firing-pin J to strike the cartridge.
  • the firing pin J is mounted in the stationary breech-piece (l, and in a chamber formed, as represented, in the rear piece L, and is driven forward to strike a percussive blow by a coil-spring, S.
  • the or Home rear of the chamber in which it is con tained may be'stopped by a removable plug, as represented in Fig. 3.
  • An arm, M extends downward and forward from the firing-pin J, and receives the action of the cam O, which movesit backward gradually, and allows it to move forward freely and smartly at the proper time under the action of the spring S.
  • a transverse shaft, W actuated by a crank, X, carries the cam 0, which operates the arm M of the firing-pin, as above described.
  • This" shaft W also carries a peculiar worm-thread, which is partly helical and partly circumferential, as indicated by 2 and 3, which worm thread performs an important oflice, as will hereinafter appear.
  • the shaft W and its attachments are shown in Fig. 5 in a position difl'ering from the view in Fig. 4 by having Onequarter turn.
  • 2 represents that portion of each thread which is spiral or helical
  • 3 represents .portion which is simply circumferential, or standing in planes at right angles to the axis.
  • the efl'ect ofthe worm-thread 2 3 is to turn the series of barrels B intermittiugly, while the hand-crank X is turned steadily.
  • a crank, N, .flxed on the end of the shaft W operates in the verticalslot of a yoke, Y, pon aslide, T, guided in a hurt rontal'groove in the side'of the chamber 13.
  • the forward end of this slide T carries a hook, I, and suitable mechanism for engaging the hook or books 1 over the flange of the cartridge at each extreme forward movement, and said slide T and the book or books i constitut-e the cartridge-shell extractor.
  • Una-hull rotation of the shaft W the yoke Y, i with its attachments, moves forward.
  • the book 1 engages j with the shell of a previously-exploded cartridge, and during the return movement of the yoke Y andits attachments the shell is withdrawn and allow ed to fall out through an aperture in the bottom piece'U, leavingqthe l catch or analogous do the next shell on being again moved forward.
  • the upper edge of the slide T is toothed, forming a rack, 4, which engages with the teeth 5 ofa wheel, 6, which turns'on a fixed pivot, 8, fixed in the side of the stationary breech-piece.
  • the yoke Y is cut awayat 15, so that its' surface describes a circular are, of which the axis W is'the center.
  • the end of the constantly-revolving crank N will therefore, while of the stationary breechvice free to engage with her in the 'station-.
  • This gate 10 is operated by the loading-bolt U as follows:
  • the gate 10 is provided with an incline by being bent at its rear end, (seeFigs. 8 and 9,) and when the loading-bolt U is drawn to the rear a'projection, 12,'formed thereon, comes under the rear inclined or bent-up end of the gate 10, and allows it to drofi a little. This it is sure to do from its own gravity and that of the cartridges which rest upon it. This movement causes the cartridge resting thereon to fall suddenly, in a truly horizontal position, intd the loading-chamber, upon the door of which it rests in front of the loading bolt U.
  • the projection 12 lifts the gate 10 sufficiently to raise, and separate the mass of cartridges from the one deposited in the loading-chamber,and thus prevents them from falling during the period while the loadingbolt is forward. it thus sustains the mass of cartridges until the loading-boltis again drawn quite to the rear, and when thus raised this gate forms, in connection with the loadingchamher, a closed guideway for directing the cartridge in its forward movement.
  • acartridge, Q might fall point first, instead of horizontally, into the loading-chamber, in which case the derangement of position would be liable to preventthe device from operating at all, and would be certain to cause delay in loading, which is not now necessary. Its operation is also such as to detach the lowermost car- -tridge from the one immediately surmount-v ing it, especially detaching the flanges ot' the two, which sometimes become so engaged that the lowermost one will (unless separated) lock with and carry the next uppermost one forward with it.
  • cartridges Q be In operating my invention one man places the cartridges Q in the feed-trough Z, while the second man turns the crank X. One halftnrn' of the latter brings one barrel, B, in line with the loading-bolt U. The second halfturn of the crank loads that barrel, and at the same time operates the firing-pin J on one cartridge and the extractor 1 on another.
  • the barrels remain stationary a snflicient length of time during each revolution of the crank Z to allow one barrel to be loaded, another to be tired, and the shell to be extracted from a third.
  • a cartridgevalve or controlling-gate combined with and operated by the loadingbolt or charger, substantially as described.
  • valve or controlling-gate with a loading-bolt or charger and the cartridge-loading chamber in the breechpiece, substantially as described.
  • a revolving mechanism for reciprocat ing the cartridgc loading bolt or charger constructed substantially as described, whereby a lost motion is produced and the loadingbolt is held stationary during a portion of the revolution of the actuating-crank.

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