US2406981A - Combined release fire and straight fire gun - Google Patents

Description

p 3, 4 c. A. YOUNG 2,406,981

' COMBINED RELEASE FIRE AND STRAIGHT FIRE GUN Filed Dec. 7, 1942 villi/11E: xiii- {M INVENTOR. I Na s Patented Sept. 3, 1946 UNITED STATES PATENT OFFICE COMBINED RELEASE FIRE AND STRAIGHT FIRE GUN 4 Claims.

This invention relates to guns, it more particularly relating to guns of the small arm type and especially relates to means for readily converting the gun into a straight fire or a release fire gun, the construction being especially adapted to a gun of the repeating type.

One of the objects of the invention is to provide a more simple and effective means in a gun of the type referred to to place the mechanism in a position for straight fire or for release fire.

A further object of the invention is to provide improved means for the purpose specified more particularly adapted to a gun in which the supporting frame or housing for the gun is neces sarily confined as to dimensions.

Referring to the drawing:

Fig. 1 is a longitudinal section of so much of a gun as is necessary to illustrate the invention, a portion of the parts being shown in side elevation, the parts being shown arranged for release fire and in the position they occupy before the hammer has been released by the sear.

Fig. 2 is a longitudinal section showing some of the parts in Fig. 1 but showing the parts in the position occupied after the sear has been operated to release the hammer.

Fig. 3 is a longitudinal section of so much of a gun as is necessary to illustrate the invention showing the parts in a position for straight fire.

Fig. 4 is a longitudinal section of some of the parts shown in Fig. 3 showing the parts in the position assumed after the sear for the hammer has been released.

As is now well known in the art, release fire guns are those which fire upon releasing pressure upon the trigger after it has been drawn to its rearmost position as distinguished from guns which fire upon a rearward pull upon the trigger, the release fire being desirable to avoid flinching upon the part of the shooter, and it is desirable to provide for using the gun either as a release fire gun or as a straight fire gun.

Referring to the drawing, I represents a portion of the stock of the gun, 2 the barrel and 3 an intermediate metallic housing to which the stock is connected and which supports the barrel and the firing mechanism, this housing having connected thereto the usual finger guard 4 extends the stationary pin 9 which is supported by the housing. The sear for the hammer 6 is indicated at l 0, this sear being pivotally mounted upon a fixed rod II which is supported by the housing, the sear being spring-pressed to a position to engage a notch in the hammer by the spring l2. The rear end of the sear overlies the trigger in close contact therewith so that when the trigger is swung to the position shown in Figs. 2. and 4 it will release the hammer. A detent, which in the present case is gravity-operated to inoperative position, is indicated at l3, this detent being pivoted upon the rod II and having a bent nose M which is adapted to engage with the lower inclined wall 15 of a recess IS in the hammer when the gun is to be used for release fire. This detent has a rearwardly extending tail l6 having its rear end bent to form a nose. l'l adapted to cooperate with a projection 7 on the trigger when the gun is to be used for release firing but to be entirely free therefrom when the gun is to be used for straight firing.

Referring now to Figs. 3 and 4, for straight fire the trigger I is moved to its rearmost position so that the fixed pin 9 will engage with the forward end of the slot 8. When the trigger is moved to this position, this removes the projection 1 on the trigger out of the path of the nose I! of the detent whereby the nose M of the detent will be out of the path of the inclined wall 15' so that the detent therefore will have no effect in holding the hammer cooked, the hammer being held in cocked position only by the sear l 0. Further pressure upon the trigger will cause it to swing about the pin 9 to the position shown in Fig. 4 to operate the sear to release the hammer and permit the gun to fire as a straight gun, the hammer being impelled to firing position by its spring 6.

Referring now to Figs. 1 and 2, when the gun is to be used as a release fire, with the hammer down the trigger is moved forwardly to the limit of its forward movement which causes the inclined projection l thereon to be aligned with the nose I! of the detent; the forward movement of the trigger being limited by the contact of the pin 9 with the rear wall of the slot 8. Further pressure upon the trigger will cause it to swing upwardly about the fixed pin 9 to not only cause the sear N to release the hammer but also move the nose M of the detent into the path of the inclined wall l5 of the recess in the hammer so as to still maintain the hammer cocked, the inclined portion of the projection I riding on the nose I! as shown in Fig. 2. When pressure The guard 4 acts as a accomplishing a similar purpose and wherein generic claims are contained covering the instant disclosure;

The mechanism hereinbefore described is set in either of the release fire or straight fire positions by manual forward or rearward movement of the trigger, respectively. It is obvious that suitable indicia may :be placed upon the firearm adjacent the trigger so as to indicate the firing position of the latter.

Having thus described my invention, I claim:

1; A firearm convertible from straight fire to release fire operation and vice versa, said fire arm comp-rising an impact member, a trigger, a sear, a detent separate from the sear and trigger temporarilylholding the impact member cocked independently of the sear under certain conditions, said trigger being common to said sear and detent, and a, mounttherefor upon which the trigger is bodily slidable into alternate operative positions, in one of which upon manual retraction it will disengage the sear to release the impact member independently of actuation of the detent and in the other of which the trigger is operative upon manual retraction to disengage the sear from the impact member and simultaneously engage the detent with the impact member, from which latter it is automatically disengaged upon release of the trigger.

2. A firearm convertible from straight fire to release fire operation and vice versa, said firearm comprising a trigger, a trigger releasable impact member, a sear normally biased into engagement with said impact member for temporarily holding the latter in cocked position, a detent independent of the sear and trigger engageable with the impact member to hold the impact member in its cocked position subsequent to disengagement of thesear therefrom by the trigger while the firearm is in condition for release fire operation, and means for mounting the trigger for bodil movement into and out of release and straight fire control positions, said trigger having a contact area engageable with said detent to move the latter into operative engagement with the impact member when the firearm is conditioned for release fire operation and for movement out of operative relation with the detent by the bodily movement of the trigger when the firearm is conditioned for straight fire operation, the detent being disengageable from the impact member by release of retractive pressure upon the trigger when the firearm is conditioned for release fire operation.

3. A firearm convertible from straight fire to release fire operation and vice versa, in accordance with claim 1, wherein the detent is mounted for pivotal movement between the impact memher and the trigger.

4'. A firearm convertible from straight fire to release fire operation and vice versa, in accordance with claim 1, wherein the trigger is mounted for pivotal and sliding movement relative to the sear and detent.

CHARLES A. YOUNG.

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