Means For Converting A Pull Trigger To A Release Trigger

Abstract

In a trigger device with a firing pin and hammer means for striking said pin, and sear means for releasing said hammer means, with connector means operatively connected to said sear means for moving it to release said hammer, and a pull trigger engaging said connector means to actuate to release said sear means, release trigger means pivotally connected to the trigger device, said pull trigger having means thereon for engaging said hammer means to prevent it from being released, and detachable cam means disposed on said pull trigger for engagement with said release trigger to prevent release of said hammer means until pressure on said pull trigger is released.

Description

The present invention relates generally to firearms and more particularly to the firing mechanism of a shotgun.

It is an object of the present invention to permit the operator of a shotgun to change from a pull trigger to a release trigger or vice versa by the simple insertion or removal of a screw on the trigger mechanism rather than requiring the time consuming services of a qualified gunsmith to remove or insert a specially designed release trigger in a shotgun.

It is also an object of the present invention to provide a release trigger mechanism that can be readily adjusted on the spot for more efficient operation in case of ware of the release trigger mechanism which adjustment may be accomplished by varying the size of the head of the trigger screw.

It is another object of the present invention to provide a firing mechanism of an Over and Under shotgun which may have inserted on both sides of the trigger mechanism screw means which permits each trigger to be utilized as a release trigger as distinguished from a pull trigger mechanism.

It is a further object of the present invention to provide for the insertion of a screw on the left side only of a pull trigger mechanism, if desired, which permits the release trigger on the top barrel of the gun only to become a release trigger as opposed to a pull trigger. Conversely, by the insertion of the screw means on the right side only of the trigger mechanism, the present invention permits the release trigger on the bottom barrel of an Over and Under shot gun to become a release trigger as distinguished from a pull trigger.

It is a further object of the present invention to provide means for the insertion of a screw on either side or both sides of the trigger mechanism so that the operator of the shotgun has his choice of a release trigger gun or a pull trigger gun depending on his personal choice.

It is a further object of the present invention to permit the operator of a shotgun to fire the gun with either a pull trigger or a release trigger without having to remove the usual recoil pad, the gun stock, the trigger guard, or the release trigger, and then reassembling the gun in the reverse order as listed above.

It is another object of the present invention to provide a mechanism in which a specially designed screw is disposed on a predetermined position on the trigger so that this screw, when the trigger is pulled, will move a specially designed steel flathead pin means, inserted through the gun breech, to move a specially designed release trigger mechanism to permit the gun to be used in a release trigger position, and in which the simple removal of a screw means reverts the gun back to an ordinary pull trigger operation.

Various other objects and advantages of the present invention will be readily apparent from the following detailed description when considered in connection with the accompanying drawings and in which:

FIG. 1 is a side view of the breech mechanism of a shotgun when it is cocked and positioned for a pull trigger operation;

FIG. 2 is a view similar to FIG. 1 but illustrating the pull trigger operation just as the hammer is released;

FIG. 3 is a view similar to FIG. 1 with the present invention illustrating the trigger mechanism when it is cocked and positioned for a release trigger operation;

FIG. 4 is a view similar to FIG. 3 but illustrating the release trigger operation just before the hammer is released; and

FIG. 5 is a section taken along line 5--5 of FIG. 3.

Referring to the drawing, the reference numeral 10 generally designates the metal breech of a 12 gauge Over and Under shotgun, made by the Browning Arms Company. The gun barrels and the gun stock are not illustrated for purposes of clarity in the drawings.

The bottom of the breech is provided with a longitudinally extending slot 26 therein in which is disposed a conventional pull trigger 28 which is pivotally connected by a pin 30 extending through opposite sides of the bottom of the breech. The rearward portion of the trigger 28 is provided with an upwardly extending connector 32 having a forwardly projecting tooth or teat 34 thereon which engages a rearwardly extending tooth or teat 36 of a sear 38 disposed in the top of the breech and pivotally connected by a pin 40 to the top of the breech. The lower end of the sear 38 is provided with a pointed projection of tooth 42 adapted to seat in a notch 44 of the hammer 46 which is pivotally connected to a pin 50 disposed in the breech 10.

The hammer 46 is normally urged toward a firing position by a compression spring 52 mounted on the breech between the tang piece 16 and the rear side of the hammer 46. The front face of the hammer 46 when it is released is adapted to strike the firing pin 53 extending from the rear face of portion 54 of the breech 10.

The inertia block 58 is moved upwardly by the connector 32 as hereinafter described and slides or is guided upon the selector safety 60. The rear face of portion 54 is provided with an upper firing pin 62 similar to the firing pin 53.

Each of the parts described in connection with the firing mechanism for one barrel of the shotgun has a similar or duplicate part disposed therein side by side for firing the other firing pin 62 for the other barrel of the shotgun.

In operation of the firing mechanism shown in FIGS. 1 and 2 in which the gun is disposed in an ordinary pull trigger operation, when the gun is in a cocked position, the hammer 46 is disposed in the position shown in FIG. 1. At this time the tooth 42 on the sear 38 is disposed in the notch 44 of the hammer 46 and prevents the hammer 46 from striking the firing pin 53. When it is desired to fire the hammer 46 so as to strike the pin 53, the trigger 28 is pulled rearwardly, as indicated in full lines in FIG. 2. The movement of the trigger 28 rearwardly will move the connector 32 upwardly so that the connector 32 will actuate the sear 38, therefore releasing the hammer 46 to strike the firing pin 53.

In order to convert the gun to a release trigger operation, the trigger 28 has threaded in a hole 64 therein a headed screw member 66, as shown in FIGS. 3 to 5. The bottom of the breech is provided with a vertical lift pin 68 with a head 69 extending therethrough on either side of the longitudinally extending slot 26 so that the bottom end of the lift pin 68 is contacted by the head of the headed screw member 66 and is lifted thereby when the trigger 28 is pulled backward into the solid line position shown in FIG. 4. A release trigger 70 is pivotally connected to a pin 72 secured to the outer vertical face 74 of the bottom of the breech as shown in FIGS. 3 and 4.

The upper end of the release trigger 70, which is shown in phantom lines in FIGS. 3 and 4 for clarity purposes, is provided with a coil spring 76 connected thereto and to a stationary pin 78 secured to the tang piece 16. The lower rear inward side of the release trigger 70 is provided with a horizontal pin 80 fixed thereto and adapted to be lifted by the upper end of the lift pin 68 so as to move the release trigger in a clockwise direction and to overcome the force in spring 76 maintaining the release trigger 70 in a rearward position. The forward upper end of the release trigger 70 is provided with a notch 82 therein adapted to receive a horizontally extending pin 84 fixed on the rearward portion of the hammer 46.

When it is desired to convert to a release trigger operation, the headed screw member 66 is merely threaded in its hole in the trigger 28 and the gun is immediately converted to a release trigger operation. By pulling back on the trigger 28, the screw 66 (see FIG. 5) inserted in the trigger 28, pushes upward, lifting lift pin 68 (see FIG. 5) which is inserted through the breech 10 on each side of the trigger 28 and has a limited upward and downward movement between the screw 68 and the lifting cam 80, which is permanently welded on a horizontal plane into the release trigger 70. The release trigger 70 is permanently mounted, to permit a limited degree of motion, on the pivot pin 72 which is inserted through the breech and locked on the opposite side by a guide washer and a retaining ring. By pulling back the trigger 28, the top portion of the release trigger 70 moves in a forward motion, causing the notch 82 to hold down the pin 84 inserted in the hammer 46, thus preventing the hammer 46 from striking the firing pin 53. As long as finger pressure is maintained on the trigger 28 the gun will not fire.

By releasing the finger pressure on the trigger the release trigger 70 is disengaged from the hammer pin 84, allowing the hammer 46 to move forward striking the firing pin 53. After the release trigger 70 is disengaged from the hammer pin 84, the release trigger 70 moves in a backward motion, and is held in position by the pull spring 76 attached to pin 78 on the tang piece 16 and to the rear portion of the release trigger 70.

By simply removing the screw 66, the release trigger 70 becomes inactive and the gun mechanism reverts back instantly to the conventional "pull trigger" operation.

From the foregoing description, it will be apparent that various changes may be made in the form, location and relative arrangement of several parts without departing from the essential characteristics of the invention, and it is to be understood that this invention is not to be limited except by the scope of the appended claims.

Claims

What is claimed is:

1. In a firearm device having a breech with a pull trigger operatively connected thereto, a firing pin disposed on said breech, hammer means for striking said pin, sear means for releasing said hammer means, connector means connected to said pull trigger for moving said sear means out of contact with said hammer means to permit it to strike said pin, and release trigger means pivotally connected to the breech having means for engaging said hammer means to prevent it from being released, and detachable cam means comprising a detachable headed screw pin member threaded into said pull trigger and a lifting pin disposed in a slot in said breech adjacent said pull trigger.

2. The device of claim 1 wherein said release trigger means is a vertically disposed block member pivotally connected at its lower front end to the side of said breech.

3. The device of claim 2 wherein said release trigger block member is provided with a notch adjacent its upper front end adapted to engage said hammer means.

4. The device of claim 3 wherein said release trigger block member is normally pulled rearwardly by biasing means secured thereto and to said breech.

5. The device of claim 4 wherein said hammer means is provided with a pin member which bears against said notch to prevent said hammer means from being released.

6. A detachable release trigger device for attachment to the breech of a shot gun with a striking hammer to convert it from a pull trigger to a release trigger, comprising a breech with a pull trigger connected thereto, horizontal pin means detachably connected to the side of said pull trigger, lift pin means disposed in slot means in said breech with its lower end adapted to be engaged by said horizontal pin means when said pull trigger is pulled rearwardly, and a release trigger member pivotally connected to said breech for engagement by the upper end of said lift pin means to move it in a clockwise direction, said release trigger having stop means thereon to hold the shot gun striking hammer from movement until pressure on said pull trigger is released.

7. The device of claim 6 wherein said horizontal pin means is a headed screw.

8. The device of claim 7 wherein said lift pin means is a pin with a head on its upper end.

9. The device of claim 8 wherein said release trigger member is a vertically disposed flat member pivotally connected to the side of said breech adjacent its front lower portion.

10. The device of claim 9 wherein said release trigger member has a horizontal projection on its lower side for engagement by the head of said lift pin.

11. The device of claim 10 wherein said release trigger member stop means is a notch in its front end.

12. A detachable release trigger device for attachment to a breech of a shot gun with a striking hammer to convert a conventional pull trigger to a release trigger comprising horizontal pin means detachably connected to the side of the pull trigger, lift pin means for positioning adjacent said breech adjacent said pin means for engagement by said horizontal pin means when the pull trigger is pulled rearwardly, and a release trigger member for pivotal connection to said breech with means thereon adapted to be engaged by said lift pin means for rotation in a clockwise direction, said release trigger having stop means thereon adapted to engage the shot gun striking hammer until pressure on said pull trigger is released.