Breech mechanism of a pistol with semi free slide

Abstract

Invention refers to a breech mechanism of a pistol with a barrel which is tilting during the recoil. Barrel (1) ledge (3) at the bottom has long slots (7), placed along its lateral surfaces, which intrude in corresponding guides (8), performed in frame (5), and the front side of the barrel (1) is placed in the slide (4) guiding hole 6.Besides that, barrel (1) ledge (3) has opened transverse slot (9) with radial edges, situated with bottom-upward tilt and close lateral hole (13). In the long slot (9) the roller (10) is placed, which is pressed up by the spring (11), situated at the closed hole (13), closed by the socket (12). On the inner sidewalls of the frame (5) bevels (14) are performed, on which the roller (10) ends are sliding and on the inner sidewalls of the slide (4) cuts (15) are performed, wherein the roller (10) ends intrude, when the slide (4) is on the forward position.

Claims

1. A breech mechanism for a pistol having a barrel which tilts during recoil, comprising, in combination: a pistol frame provided with guides therein, and bevel portions each having a horizontal surface and incline sections; a cartridge chamber; a pistol slide member having a slide guide hole member disposed therewithin and slide cut portions; a pistol barrel disposed within said pistol slide member with a front portion of said barrel placed in said slide guide hole member; said pistol barrel having a ledge member at a bottom of said barrel; said barrel ledge member being providing with elongated slots disposed along lateral surfaces of said barrel ledge member; said frame guides engage with said elongated slots; said barrel ledge member having a transverse slot therein and a lateral hole member closed by a socket member; a spring disposed in said lateral hole member; and a cylindrical roller placed in said transverse slot and pressed by said spring to slide on said frame bevel portions and to intrude in said slide cut portions when said pistol slide member is in a forward position.

2. The mechanism of claim 1, wherein: when said slide member is in said forward position, said barrel and slide member are releasably connected together by said cylindrical roller; and whereby said cylindrical roller is pressed by said spring to said slide cut portions and temporarily connected between said slide cut portions and said horizontal surface of said frame bevel portions to provide a releasable junction between said barrel and said slide member.

3. The mechanism of claim 1, wherein: when said slide member is moving backwardly, said cylindrical roller slides between said slide cut portions and said horizontal surface of said frame bevel portions while said barrel remains releasably connected to said slide member until said cylindrical roller reaches said frame bevel incline sections; and whereby when said cylindrical roller emerges from said slide cut portions, said barrel stops and said slide member continues to move backwardly to ensure that said slide member detaches from said barrel.

4. The mechanism of claim 2, wherein: when said slide member is moving backwardly, said cylindrical roller slides between said slide cut portions and said horizontal surface of said frame bevel portions while said barrel remains releasably connected to said slide member until said cylindrical roller reaches said frame bevel incline sections; and whereby when said cylindrical roller emerges from said slide cut portions, said barrel stops and said slide member continues to move backwardly to ensure that said slide member detaches from said barrel.

5. The mechanism of claim 1, wherein: said slide cut portions comprise semicircular slide holes.

6. The mechanism of claim 2, wherein: said slide cut portions comprise semicircular slide holes.

7. The mechanism of claim 3, wherein: said slide cut portions comprise semicircular slide holes.

8. The mechanism of claim 4, wherein: said slide cut portions comprise semicircular slide holes.

9. The mechanism of claim 1, wherein: said frame bevel portions are disposed at a first tilt angle; and said barrel ledge transverse slot is disposed at a second tilt angle which differs from said first tilt angle in a predetermined manner to ensure a slow stopping of said barrel after said barrel detaches from said slide member.

10. The mechanism of claim 2, wherein: said frame bevel portions are disposed at a first tilt angle; and said barrel ledge transverse slot is disposed at a second tilt angle which differs from said first tilt angle in a predetermined manner to ensure a slow stopping of said barrel after said barrel detaches from said slide member.

11. The mechanism of claim 3, wherein: said frame bevel portions are disposed at a first tilt angle; and said barrel ledge transverse slot is disposed at a second tilt angle which differs from said first tilt angle in a predetermined manner to ensure a slow stopping of said barrel after said barrel detaches from said slide member.

12. The mechanism of claim 4, wherein: said frame bevel portions are disposed at a first tilt angle; and said barrel ledge transverse slot is disposed at a second tilt angle which differs from said first tilt angle in a predetermined manner to ensure a slow stopping of said barrel after said barrel detaches from said slide member.

13. The mechanism of claim 5, wherein: said frame bevel portions are disposed at a first tilt angle; and said barrel ledge transverse slot is disposed at a second tilt angle which differs from said first tilt angle in a predetermined manner to ensure a slow stopping of said barrel after said barrel detaches from said slide member.

14. The mechanism of claim 6, wherein: said frame bevel portions are disposed at a first tilt angle; and said barrel ledge transverse slot is disposed at a second tilt angle which differs from said first tilt angle in a predetermined manner to ensure a slow stopping of said barrel after said barrel detaches from said slide member.

15. The mechanism of claim 7, wherein: said frame bevel portions are disposed at a first tilt angle; and said barrel ledge transverse slot is disposed at a second tilt angle which differs from said first tilt angle in a predetermined manner to ensure a slow stopping of said barrel after said barrel detaches from said slide member.

16. The mechanism of claim 8, wherein: said frame bevel portions are disposed at a first tilt angle; and said barrel ledge transverse slot is disposed at a second tilt angle which differs from said first tilt angle in a predetermined manner to ensure a slow stopping of said barrel after said barrel detaches from said slide member.

Description

(1) FIG. 1breech mechanism longitudinal section

(2) FIG. 2section by A-A on FIG. 1.

(3) FIG. 3section by B-B on FIG. 1.

(4) FIG. 4section by C-C on FIG. 3 (the slide is in forward position, joined with barrel).

(5) FIG. 5section by C-C on FIG. 3 (slide is moving backwards and detached with barrel).

(6) Pistol breech mechanism consists of the barrel 1, performed with the cartridge chamber 2, ledge 3, performed at the rear side and directed down, slide 4 and frame 5.

(7) Barrel 1 ledge 3 at the bottom has long slots 7, placed along its lateral surfaces, which intrude in corresponding guides 8, performed in frame 5, and the front side of the barrel 1 is placed in the slide 4 guiding hole 6.

(8) Besides that, barrel 1 ledge 3 has opened transverse slot 9 with radial edges, situated with bottom-upward tilt and close lateral hole 13. In the long slot 9 the roller 10 is placed, which is pressed up by the spring 11, situated at the closed hole 13, closed by the socket 12. On the inner sidewalls of the frame 5 bevels 14 are performed, on which the roller 10 ends are sliding and on the inner sidewalls of the slide 4 cuts 15 are performed, wherein the roller 10 ends intrude, when the slide 4 is on the forward position.

(9) Breech Mechanism Position at Barrel with Slide Junction and Detach

(10) When the slide 4 is on forward position, the barrel 1 and slide 4 are joined by the roller 10. Roller 10 is pressed by the spring 11 to the slide 4 cuts 15 and fastened between slide 4 cuts 15 and horizontal surface of the frame 5 bevels 14, which ensures the barrel 1 junction with the slide 4.

(11) When the slide 4 is moving back, roller 10 slides between the slide 4 cuts 15 and horizontal surface of the frame 5 bevels 14, at that the barrel 1 remains joined with the slide 4 until the roller 10 ends achieve the frame 5 bevels 14 inclines. When the roller 10 ends, moving on the frame 5 bevels 14 inclines are emerge from the slide 4 cuts, the barrel 1 stops and the slide 4 continue moving backwards, insuring the slide 4 and barrel 1 detach.

(12) Besides that, the frame 5 bevels 14 tilt angles and slot 9 tilt in the barrel 1 ledge 3, where the roller 10 is moving are different, insuring the slow barrel 1 stop after its detach with the slide 4.

(13) Reference design bundle is developed for the proposed breech mechanism structure. Design is technologically processed. Above mentioned breech mechanism test samples are manufactured and tested; testing results are positive.