US3264939A - Firearm - Google Patents

Description

E. G. REISING Aug. 9, 1966 FIREARM Filed Dec. 2, 1964 fad efgene 6' Reality M fh United States Patent flice Patented August 9, 1966 3,264,939 FIREARM Eugene G. Reising, Hartford, Conn. Harrington & Richardson Inc., Park Ave, Worcester, Mass.) Filed Dec. 2, 1964, Ser. No. 415,289 3 Claims. (Cl. 89-145) This invention relates to a new and improved firing mechanism particularly adapted to semi-automatic firearms. The principal object of the invention resides in the provision of a pivoted trigger having mounted thereon a pivoted sear latch normally engaging the sear to disengage it from the hammer upon pressing the trigger, in combination with a pivotally mounted dis-connector for the latch, the disconnector being under actuation by an action bar. The action bar retracts upon the firing of the weapon, depresses the disconnector, and disengages the sear latch from the sear, so that regardless of whether or not the operator keeps his finger on the trigger or again presses the trigger, no further firing can be done until the action bar is once more back in its forward position and the bolt closes the breech, so that the eifect is in general that the trigger is completely disengaged from the sear and cannot actuate it unless the action bar is fully home and the breech closed.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings in which:

FIG. 1 is a view in side elevation of the firearm, parts being removed, and

FIG. 2 is a longitudinal section showing the firing mechanism on an enlarged scale.

The barrel of the firearm is shown at 10. This 'barrel is mounted on a receiver 12. The bolt is shown at 14 and as shown in FIG. 2 it is locked in a notch 16 while in its forwardmost position as positioned by the action bar 18. The action bar has an action bar spring 20 which causes it to move forwardly and it is interconnected with respect to the bolt 14 as by the movable connection at 22 so as to move the 'bolt rearwardly as shown in dotted lines in FIG. 2. The action 'bar spring then of course moves the assembly forwardly and after the ejection of the spent cartridge on the retractive stroke, a new cartridge is received in the breech under influence of the bolt as will be clear to those skilled in the art.

There is a frame 24 mounted on the receiver and forming a guideway for the action bar as well as mounting the firing mechanism and receiving a magazine not shown. There is a trigger guard 26 and a trigger 28. The trigger 28 is mounted on a pin at 30 and a trigger spring 32 normally maintains the trigger in its forward position as shown in solid lines. Pivotally mounted as at 34 there is a sear latch 36 which has the inclined camsurface at 38 and an outstanding projection at 40. Also this sear latch is provided with a spring 42 to maintain it in its forward solid line position in FIG. 2.

There is a sear 44 which has a sear spring 46 normally urging it in a counterclockwise direction in FIG. 2 about its pivot pin 48. It has a nose 50 for latching the trigger 52 which has a complementary nose 54. The hammer has a spring 56 pivotally mounted at 58, this spring normally moving the hammer to the firing position to strike the firing pin 60 in the bolt.

The action is that the hammer is engaged with the sear under action of the action bar, as in solid lines in FIG. 2, and when the trigger is pressed, the sear latch in turn depresses the sear so that the nose at 50 moves off that at 54 and releases the hammer. The hammer and sear are provided with complementary cam surfaces 62 and 64 for reengagement thereof as will be clear when the action bar moves to the rear and depresses the hammer so that it can snap under the sear nose 50 to be held thereby.

Referring now to FIG. 1 there is shown a disconnector 66 pivoted at 68 to a part of the frame 24. This disconnector is located laterally of the mechanism described and shown in FIG. 2 but it has a rear end portion in the form of a cam nose at 70 which engages the outstanding projection 40, and at its opposite end it has a nose at 72 in the path of the action bar 18.

The action is that as long as the action bar is in engagement with the nose 72 depressing the disconnect-or, thus raising the cam surface 70 the sear latch will be held out of range of the sear, see the dotted lines in FIG. 2, and therefore the trigger is completely disconnected from the scar and the firearm cannot fire. When the action bar returns to its forwardmost position as is indicated by the reference numeral 76, see FIG. 1, the bolt 14 is fully home and locked and a new cartridge is in position, and then the sear latch is released by the disconnector and resumes its ready position for firing.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is:

1. In a firearm, a trigger, means pivotally mounting the same, a pivotally mounted sear, a pivotally mounted hammer, a hammer spring tending to move the hammer in a direction to fire the fire-arm, said sear and said hammer having interengaging means for holding the hammer cocked in position, means connecting the trigger and the sear for moving the sear to hammer-releasing position by means of the trigger, an action bar and action bar spring, a disconnector actuated by the action bar, said disconnector acting to disengage said second-named means when the action bar is moved to the rear under influence of the explosive forces of the cartridge in the breech of the firearm upon being fired by the hammer, said action bar holding the disconnector in trigger-sear disconnected position until the action bar returns to its original breechclosed position, the means connecting the trigger and sear including a pivoted member mounted on the trigger and having a disconnectable engagement with respect to the scar, and a spring for moving the pivoted member toward sear-engaging position against the action of the disconnector.

2. In a firearm, a trigger, means pivotally mounting the trigger, a sear, means pivotally mounting the sear, a hammer, means pivotally mounting the hammer, a hammer spring tending to move the hammer toward firing position of the firearm, said scar and said hammer having interengaging means for temporarily holding the hammer in cocked position,

and a sear latch, means pivotally mounting the sear latch on the trigger in offset relation with respect to the axis of the means pivotally mounting the trigger, interengaging means between the sear and the sear latch by which the sear latch moves the sear to hammer-releasing position under influence of said trigger,

a disconnector, means movably mounting the disconnector, an action bar, the action bar being adapted to engage the disconnector and move the same in a predetermined direction, and means on the disconnector engaging the sear latch and moving the sear latch about its axis in a direction to disengage it from the sear when the disconnector is moved by the action bar on the retr-active motion thereof, said disconnector engaging said sear latch to maintain the same disconnected with relation to said sear until such time as said action bar once more disengages the disconnector, and a spring for said action bar moving the same forwardly and from contact with the disconnector.

3. In a firearm as recited in claim 2, a pivot pin for the disconnector and means on the disconnector in the path of the action bar, said last-named means being positioned to be engaged by the action bar to move the disconnector about its axis to disengage the sear action of the sear immediately upon initiation of retractive motion on the part of the action bar, said taction bar being in operative contact with respect to said disconnector until it disengages therefrom substantially in breech-closed position of the firearm.

References Cited by the Examiner UNITED STATES PATENTS 1,511,509 10/1924 Diehm 89145 5 2,422,854 6/1947 Reising 89145 FOREIGN PATENTS 582,963 8/1933 Germany.

BENJAMIN A. BO'RCHELT, Primary Examiner. FRED c. MATTERN, JR., Examiner.

Claims (1)

1. IN A FIREARM, A TRIGGER, MEANS PIVOTALLY MOUNTING THE SAME, A PIVOTALLY MOUNTED SEAR, A PIVOTALLY MOUNTED HAMMER, A HAMMER SPRING TENDING TO MOVE THE HAMMER IN A DIRECTION TO FIRE THE FIREARM, SAID SEAR AND SAID HAMMER HAVING INTERENGAGING MEANS FOR HOLDING THE HAMMER COCKED IN POSITION, MEANS CONNECTING THE TRIGGER AND THE SEAR FOR MOVING THE SEAR TO HAMMER-RELEASING POSITION BY MEANS OF THE TRIGGER, AN ACTION BAR AND ACTION BAR SPRING, A DISCONNECTOR ACTUATED BY THE ACTION BAR, SAID DISCONNECTOR ACTING TO DISENGAGE SAID SECOND-NAMED MEANS WHEN THE ACTION BAR IS MOVED TO THE REAR UNDER INFLUENCE OF THE EXPLOSIVE FORCES OF THE CARTRIDGE IN THE BREECH OF THE FIREARM UPON BEING FIRED BY THE HAMMER, SAID ACTION BAR HOLDING THE DISCONNECTOR IN TRIGGER-SEAR DISCONNECTED POSITION UNTIL THE ACTION BAR RETURNS TO ITS ORIGINAL BREECHCLOSED POSITION, THE MEANS CONNECTING THE TRIGGER AND SEAR INCLUDING A PIVOTED MEMBER MOUNTED ON THE TRIGGER AND HAVING A DISCONNECTABLE ENGAGEMENT WITH RESPECT TO THE SEAR, AND A SPRING FOR MOVING THE PIVOTED MEMBER TOWARD SEAR-ENGAGING POSITION AGAINST THE ACTION OF THE DISCONNECTOR.

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