Trigger mechanism for a pistol

Abstract

A pistol having a sliding hammer (5), a trigger mechanism including a trigger rod (2), an automatic safety (10) which can engage said sliding hammer (5) and a two armed lever (8) rotatably mounted on an axis (15) for operating the automatic safety (10) by means of a first arm (9), said trigger rod (2) having a rear end which is bent to a form a horizontal part, said horizontal part comprising: a first alignment edge (3) which engages a hammer ledge (4) on said sliding hammer (5) and a second alignment edge (6) which engages a hollow (7) in a second arm (11) of the two armed lever (8).

Claims

1. A trigger mechanism apparatus for a pistol with a percussion firing mechanism, comprising, in combination: a slidable hammer; a trigger mechanism including a trigger rod, an automatic safety device that is engageable with said slidable hammer, and a two-armed toggle lever rotatably mounted on an axle for operating said automatic safety device by way of a first arm of said two-armed toggle lever; said trigger rod having a rear end portion which is bent to form a horizontal portion; said horizontal portion of said trigger rod includes a first alignment edge which engages a hammer ledge of said slidable hammer; and said horizontal portion of said trigger rod includes a second alignment edge which engages a hollow portion in a second arm of said two-armed toggle lever.

2. The apparatus of claim 1, including: a back spring having a first end attached to a frame of the apparatus, and having a second end attached to a rear bottom side of said trigger rod; and whereby said rear bottom side of said trigger rod is subjected to a spring pressure from said back spring.

3. The apparatus of claim 1, wherein: said trigger mechanism includes a trigger pivotally attached to said trigger rod so that when said trigger is pulled said trigger rod is moved backwardly, said second alignment edge intrudes into said hollow portion in said second arm of said two-armed toggle lever and turns said two-armed toggle lever about said axle, and said first arm of said two-armed toggle lever pushes said first alignment edge of said automatic safety device to release said slidable hammer.

4. The apparatus of claim 2, wherein: said trigger mechanism includes a trigger pivotally attached to said trigger rod so that when said trigger is pulled said trigger rod is moved backwardly, said second alignment edge intrudes into said hollow portion in said second arm of said two-armed toggle lever and turns said two-armed toggle lever about said axle, and said first arm of said two-armed toggle lever pushes said first alignment edge of said automatic safety device to release said slidable hammer.

5. The apparatus of claim 1, including: a slide member; a cartridge chamber; a cartridge disposed in said cartridge chamber; said cartridge having a bullet and a primer; a pistol barrel; a recoil spring; a hammer spring pressing said slidable hammer forwardly toward said primer of said cartridge disposed in said cartridge chamber; said trigger mechanism includes a trigger pivotally attached to said trigger rod so that when said trigger is pulled said trigger rod is moved backwardly, said second alignment edge intrudes into said hollow portion of said two-armed toggle lever and turns said two-armed toggle lever about said axle, and said first arm of said two-armed toggle lever pushes said first alignment edge of said automatic safety device to release said slidable hammer; said first alignment edge pushes said hammer ledge in the hammer spring pressing direction; said trigger rod continues to move so that said second arm of said two-armed toggle lever moves below said hammer ledge; and the released slidable hammer urged by a spring pressure action of said hammer spring strikes said primer of said cartridge, releasing powder gases to push said bullet forwardly through said barrel of the pistol.

6. The apparatus of claim 2, including: a slide member; a cartridge chamber; a cartridge disposed in said cartridge chamber; said cartridge having a bullet and a primer; a pistol barrel; a recoil spring; a hammer spring pressing said slidable hammer forwardly toward said primer of said cartridge disposed in said cartridge chamber; said trigger mechanism includes a trigger pivotally attached to said trigger rod so that when said trigger is pulled said trigger rod is moved backwardly, said second alignment edge intrudes into said hollow portion of said two-armed toggle lever and turns said two-armed toggle lever about said axle, and said first arm of said two-armed toggle lever pushes said first alignment edge of said automatic safety device to release said slidable hammer; said first alignment edge pushes said hammer ledge in the hammer spring pressing direction; said trigger rod continues to move so that said second arm of said two-armed toggle lever moves below said hammer ledge; and the released slidable hammer urged by a spring pressure action of said hammer spring strikes said primer of said cartridge, releasing powder gases to push said bullet forwardly through said barrel of the pistol.

7. The apparatus of claim 3, including: a slide member; a cartridge chamber; a cartridge disposed in said cartridge chamber; said cartridge having a bullet and a primer; a pistol barrel; a recoil spring; a hammer spring pressing said slidable hammer forwardly toward said primer of said cartridge disposed in said cartridge chamber; said first alignment edge pushes said hammer ledge in the hammer spring pressing direction; said trigger rod continues to move so that said second arm of said two-armed toggle lever moves below said hammer ledge; and the released slidable hammer urged by a spring pressure action of said hammer spring strikes said primer of said cartridge, releasing powder gases to push said bullet forwardly through said barrel of the pistol.

8. The apparatus of claim 4, including: a slide member; a cartridge chamber; a cartridge disposed in said cartridge chamber; said cartridge having a bullet and a primer; a pistol barrel; a recoil spring; a hammer spring pressing said slidable hammer forwardly toward said primer of said cartridge disposed in said cartridge chamber; said first alignment edge pushes said hammer ledge in the hammer spring pressing direction; said trigger rod continues to move so that said second arm of said two-armed toggle lever moves below said hammer ledge; and the released slidable hammer urged by a spring pressure action of said hammer spring strikes said primer of said cartridge, releasing powder gases to push said bullet forwardly through said barrel of the pistol.

9. The apparatus of claim 1, including: a slide member; a recoil spring; and whereby when said recoil spring expands, said slide member moves forwardly, and said automatic safety device presses said first arm of said two-armed toggle lever turning said second arm of said two-armed toggle lever so that said hollow portion in said second arm of said two-armed toggle lever seats over against said second alignment edge of said trigger rod.

10. The apparatus of claim 2, including: a slide member; a recoil spring; and whereby when said recoil spring expands, said slide member moves forwardly, and said automatic safety device presses said first arm of said two-armed toggle lever turning said second arm of said two-armed toggle lever so that said hollow portion in said second arm of said two-armed toggle lever seats over against said second alignment edge of said trigger rod.

11. The apparatus of claim 3, including: a slide member; a recoil spring; and whereby when said recoil spring expands, said slide member moves forwardly, and said automatic safety device presses said first arm of said two-armed toggle lever turning said second arm of said two-armed toggle lever so that said hollow portion in said second arm of said two-armed toggle lever seats over against said second alignment edge of said trigger rod.

12. The apparatus of claim 4, including: a slide member; a recoil spring; and whereby when said recoil spring expands, said slide member moves forwardly, and said automatic safety device presses said first arm of said two-armed toggle lever turning said second arm of said two-armed toggle lever so that said hollow portion in said second arm of said two-armed toggle lever seats over against said second alignment edge of said trigger rod.

13. The apparatus of claim 5, wherein: when said recoil spring expands, said slide member moves forwardly, and said automatic safety device presses said first arm of said two-armed toggle lever turning said second arm of said two-armed toggle lever so that said hollow portion in said second arm of said two-armed toggle lever seats over against said second alignment edge of said trigger rod.

14. The apparatus of claim 6, wherein: when said recoil spring expands, said slide member moves forwardly, and said automatic safety device presses said first arm of said two-armed toggle lever turning said second arm of said two-armed toggle lever so that said hollow portion in said second arm of said two-armed toggle lever seats over against said second alignment edge of said trigger rod.

15. The apparatus of claim 7, wherein: when said recoil spring expands, said slide member moves forwardly, and said automatic safety device presses said first arm of said two-armed toggle lever turning said second arm of said two-armed toggle lever so that said hollow portion in said second arm of said two-armed toggle lever seats over against said second alignment edge of said trigger rod.

16. The apparatus of claim 8, wherein: when said recoil spring expands, said slide member moves forwardly, and said automatic safety device presses said first arm of said two-armed toggle lever turning said second arm of said two-armed toggle lever so that said hollow portion in said second arm of said two-armed toggle lever seats over against said second alignment edge of said trigger rod.

Description

(1) The invention essence is shown on figures:

(2) FIG. 1trigger mechanism cross section before the shot (the slide is in forward position).

(3) FIG. 2trigger mechanism topside view.

(4) FIG. 3trigger mechanism section (slide in the rearmost position).

(5) Announced trigger mechanism of the pistol consists of the trigger 1 with the rod 2 attached, read end of which is bended horizontally and has the alignment edge 3 and the alignment edge 6, the disconnecting unit is performed as the fixed toggle 8 with the turn possibility on the axis 15, which has arm 9 for the automatic safety 10 switch and arm 11 with hollow 7. The rear side of the rod 2 is under the back spring 12 pressure, which attached to the frame 14 by one end and to the rear bottom side of the rod 2 by another end.

(6) The Trigger Mechanism Position at the Trigger Pull and Release

(7) At the trigger 1 pull, the rod 2 is moving back. The edge 6 intrudes the hollow 7 of the toggle 8 and turns the toggle 8 about axis 15, at that the toggle 8 arm 9 pushes the automatic safety 10 ledge and throws out of engagement with the hammer 5 and releases the hammer 5, simultaneously the rod 2 edge 3 pushes the hammer 5 ledge 4 in hammer 5 spring 16 pressing direction. The rod 2 continues to move back by its edge 6, turns the toggle 8 so, that the arm 11 of the toggle 8 goes below the hammer 5 ledge 4. Released hammer 5 under the preliminary pressed spring 16 action, strikes the primer 17 of the cartridge 18, located in the cartridge chamber 21, and here comes the shot. Powder gases, generated at shot, push the bullet 19 forward through the barrel, at that, the slide 13 is moving backwards, presses the recoil spring 20 and strikes the toggle 8 arm 11 with safety, at that the rod 2 edge 6 de-meshes from the hollow 7 of the toggle 8 and rear end of the rod 2 under the back spring 12 action goes up, simultaneously the rod 2 edge 3 seats over against the hammer 5 ledge 4. When the recoil spring 20 expands, the slide 13 is moving forward, the automatic safety 10 presses the toggle 8 arm 9, at that the toggle 8 arm 11 turns so, that the toggle 8 hollow 7 seats over against the rod 2 edge 6.

(8) At the trigger 1 release, the rod 2 is moving forward, the rod 2 edge 3 together with hammer 5 ledge 4 moves forward, at that the hammer 5 spring 16 compresses slightly. The trigger mechanism is ready for the shot again.

(9) The described invention allows to improve the sight shooting accuracy parameters after the first and next shots and to simplify the mechanism structure.

(10) Reference design bundle is developed for the proposed trigger mechanism structure, design is technologically processed. Pistol test samples with described trigger mechanism are manufactured and tested, testing results are positive.