US985632A - Pistol. - Google Patents

Description

A.-PRDVAGLIa PISTDL. APPIFIOATIOH FILED APB/5, 1906 Patented Feb. 28, 1911.

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A. PROVAGLIQ.

PISTOL.

APPLIUATIOH Hmm Arms, 190s.

I Patented Feb.28, 1911.

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ALESSANDRO PnovAGLIo, oF CARCINA; ITALY, AssIGNoR To METALLURGIGA BRECIANA GIA TEMIINI, 0F BRESCIA, ITALY.

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Specification of Letters Patent. .Patented Feb, 28, 1911.

Application filed April 5, 1906l Serial No. 310,185.

To all whom 'it may concern:

Be it known that I, ALESSANDRO PRovAG- Lio, a subject of the-King of Italy, residing at Carcina, Province of Brescia, Italy, have invented certain Improvements in Pistols, of which the following is a specification.

This invention has for its object the provision of an automatic action for a pistol, the arrangement of parts being /such that the barrel shall recoil during a small portion of the recoil movement, it being also desired to provide means for temporarily locking the barrel to the breech block, which shall permit said block to pivot on a structure fixed in the frame. v

In order to allow of the following specitication being easily understood, reference will now be made to the accompanying drawings, in which:

Figure l' is a side elevation view of the pistol partly in vert-ical section, the cover plate and the left hand side plate being removed. It is assumed that the magazine is fully inserted in the pistol, while the breech block is closed and the striker is uncocked; Fig. 2 is a similar view to Fig. 1, illustrating the breech block as withdrawn and the spiral recoilspring compressed to the maximum degree; Fig. 3 is 'a plan of the pistol when closed; Fig. 4 is a rear elevation of the pistol, from which the magazine is omitted; Fig. 5 shows the firing device with its parts in the posi-tions occupied ready for ringkla shot; Fig. 6 shows the device illustrated in Fig. 5 but with its parts in the positions occupied after the shot has been red; and Fig.. 7 is a 'vertical section on the line 7-7, Fig. 1, of the barrel extension, with the breech block shown in section.

Description of the weapon-The pistol is composed of the frame o', the barrel 7c,

which arrangement is completed by a block screwed to the barrel extension L and the loading and firing mechanisms. As shown in Figs. l, 2 and 4, the frame c" is of the ordinary shape, but is open at the left side,`

the opening, however, being normally closed by means of a side plate g, (Fig. 4), and a cover plate c. This. latter, as shown-in Fig.-

4, is held at the rear end by a hook engaging in a recess d of the butt, and at the opposite end by means of a screw whose shank enters a cavity a in the frame, above the trigger guard. In the middle of the frame is placed the magazine g, and in the rear side, into which extends a pin o fixed transversely to the barrel extension. This pin and slot connection limits the backward movement of the breech block and at the same time is lengaged by one end of a spiral spring m, which constantly presses forward the breech block o and the firing pin p. ,Said firing pin is cylindrical in form .and slides inside the breech` block o, having, in correspondence with the slots of the latter, a relatively long slot for the passage of the pm fv.

When the pistol Jis closed, the arm 72, whichV is pivoted to the. rear part of the frame, has its upper end constantly pressed forward, by the action of the fiat spring m against the notch z' in the lower portion of the breech block, and backward against -a projection 1" of the barrel extensibn, so that thelatter and the breech block are locked the ordinary rigid closing. -f

When the shot is fired, the barrel and its extension recoil together with the 'breech block for a limited distance, thereby turning the arm b backward, and keeping it l pressed against `the projection r of the barrel extension.- At the end of the limited movement, the @turning of the arm b into the position shown in Fig. 2 leaves the breechv4 block free to continue the remainder of the movement independently, during which movement it acts to'extract the empty cartridge by means of the extractor e. As soon as the backwa movement of the breech block has been completed, it is moved forward by the action of the spring m, and

in so ldoing moves toward the chamber a new cartridge elevatedby the springof the magazine. As soon as the notch i reaches the arm b', the latter again turns forward, and allows the barrel extension and the barrel, as onepiece, to return to thepositions shown in Fig. 1, this movement being aided by a spiral spring n, which has been compressed by the recoil of the barrel extension and is laced inside a projection r, (Figs. l and 2) ormed underneath the barrel extension. As is evident from the foregoing descri tion, this method of' closing is totally di e'rent from "those at present known, for the reason 4that-the. closing device 1s appliedV to the "extension in such'manner that its upper part 'ger g e acts against the tooth d when saiddever is turned by 'a pawl b movable on the trig- This latter is pivoted in the frame and has a `V-shaped flat spring fv which constantly presses it forward and the pawl backward.

When the weapon is closed and vready to tire, so that` the parts are in the positions shown in Fig. 5, the pressing back .of the trigger causes the pawl to beraised so as to turn the lever Z. As a result, the upper part e of this latter, pressing against the tooth al', moves the striker backward so as to compress the spring m and then inally releases it, thereby causing it to ire the cartridge, (Fig. 6). When the barrel recoils, it .draws backward the lever Z which in this way is unlocked from the trigger, and by means of a suitable spring t its upper end e isagain returned to its raised or normal position. Under these conditions the said lever is ready to stop the tooth al in the posi# tion corresponding to that in which, the

` pistol is ready forv firing another shot.` The peculiarity of this mechanism consists in the fact that the 'lever Z is pivoted in the barrel extension, so that if this is not completely closed the trigger cannot act on the s'aid lever and a shot `cannot be fired.

TheA repeating ymechanism consists of a magazine that may contain eight or more cartridges, and is inserte'dfi-n the frame from its lower en d. Inside of the magazine there slides vertically an elevator pressed' constantly upward by an elliptical spiral spring. The peculiarity of this magazineconsists in the fact that its sides are open, that is to say, each side has a relatively wide slot, so

that it is easy.4 to hold ,the elevator from opposite sides with the lingers when itis desired to introduce cartridges into the magazine, such holding being facilitated by grooves .e in said elevator. The magazine` is held in its place by a tooth Z carried on a suitable lever u. The tooth *Z may be raised by pressing from the outside the button e, of the lever u and when this is done the` magazine may then be withdrawn from the weapon.

)Vhen all the shots have been fired, the breech block will be caused to remain open by means of a suitable device, thereby giving .indication that the magazine 1s empty.

Such device in the present instance consists of an ejector f sliding vertically in its own cavity of the frame, and constantly pressed downward by small spiral spring. When the last cartridge has been vator, Which is provided at its rear end with fired, -the ele a tooth, presses against an internal projection of the ejector f', thereby raising the latter so that its front part is brought in front o f the breech block and caused to lock it in its rear position. h v

I declare that what I claim is The combination in an automatic pistol,

of a magazine having a cartridge elevator, a. spring for actuating the same, an ejector,

a breech block operated bythe recoil, and a spring normally maintaining the ejector in a position out of the path of movement of the,breech block, said. elevator being capable of engaging they ejector under the action of the elevator spring so as to force the ejector into' the path of movement of the breech block and prevent the latter'from moving into closed position after the last cartridge has been fired.

Sign

. ed by me at Milan in the Kingdom of Italy; this 16th day of March 1906.

ALESSANDRO PRovAGLIo.

Witnessesr -V MrcHELE Dri-DRAGO. FUGINI, CARLO.

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