Assembly of a breech, a breech block and an ejector

Abstract

An assembly of a breech (1), a breech block (2) and an ejector (3) wherein the breech (1) is connected to the breech block (2) with the use of a groove (10), arranged in the breech block (2), and a corresponding recess, arranged in the breech (1). An ejector (3) is arranged in the breech (1) that is longitudinally adjustable in a sliding way between the front and rear end position. The ejector (3) is biased by a spring (6) against the shooting direction. On the back of the ejector (3) a recess is arranged that a peg (7) that protrudes from the breech (1) reaches into. At the rear side of the ejector (3), a longitudinal pin (4) is arranged that fits into an opening (5) in the breech block (2) in the rear end position of the ejector (3). On the part of the ejector (3) that protrudes out of the breech (1), a stop surface (9) is arranged for bearing on the breech guide (11) that protrudes out of the breech (1) block.

Claims

1. An assembly comprising a breech head, a breech block and an ejector, wherein the breech head is connected to the breech block with the use of a groove arranged in the breech block and a corresponding recess arranged in the breech head, wherein the ejector is arranged in the breech head and is longitudinally adjustable in a sliding way between a front position and a rear end position, wherein the ejector is biased by a spring against a shooting direction, wherein a recess is arranged on a back of the ejector, wherein a protruding peg from the breech head reaches into the recess, wherein a longitudinal pin is positioned at a rear side of the ejector that fits into an opening in the breech block in the rear end position of the ejector, wherein a stop surface is positioned on a portion of the ejector that protrudes out of the breech head, and wherein the stop surface is arranged for bearing on a breech block guide that protrudes out of the breech block.

Description

BRIEF DESCRIPTION OF DRAWINGS

(1) The invention will be described in more detail with reference to a particular embodiment of the assembly of a breech, a breech block and an ejector according to the invention, shown in attached drawings where individual figures represent:

(2) FIG. 1—a section of an assembly according to the invention at the moment of ejecting the cartridge case after the shot;

(3) FIG. 2—a detailed view of the assembly of FIG. 1 with the breech locked in the breech block;

(4) FIG. 3—the assembly of FIG. 2 at the moment of removing of the breech out of the breech block;

(5) FIG. 4—a detail of the ejector.

DESCRIPTION OF PREFERRED EMBODIMENTS

(6) The assembly of a breech head 1 (as used herein, “breech” and “breech head” are used interchangeably and are intended to mean the same thing and refer to the same element, the head of a breech block), a breech block 2 and an ejector 3 according to FIGS. 1, 2 and 3 shows a breech 1 that is connected to the breech block 2 with the use of a groove 10 arranged in the breech block 2, and a corresponding recess arranged in the breech 1.

(7) In the breech 1, an ejector 3 is arranged that is slidably longitudinally adjustable in the direction of the breech 1 axis between the front and rear end position.

(8) The ejector 3 is biased against the shooting direction by a spring 6, arranged along the perimeter of the shank 8 of the ejector 3. On the back of the ejector 3, a recess is arranged that a peg 7 that protrudes out of the breech 1 reaches into.

(9) On the rear side of the ejector 3, a longitudinal pin 4 is arranged that, in the rear end position of the ejector 3, fits into an opening 5 in the breech block 2, and on the portion of the ejector 3 that protrudes out of the breech 1, a stop surface 9 is arranged for bearing on the breech guide 11 that protrudes out of the breech block 2.

(10) The primary function of the ejector is to eject empty cartridge cases 12. The ejector 3 is biased by a spring 6, arranged along the perimeter of the ejector 3 shank 8. The spring 6 returns the ejector 3 after ejection of the cartridge case 12 (see FIG. 1) back to the original position so that the firearm can be prepared for the next charging of the firearm. The ejector 3 is fixed in the breech 1 with a peg 7. When the breech 1 assembly is pulled into the rear position, the ejector 3 will hit the breech 1 guide 11, which will stop the ejector 3, but the rest of the breech 1 assembly and the cartridge case 12 carried at the front of the breech 1 will continue moving for a short time. The shank 8 of the ejector 3 will act on the bottom of the cartridge case 12 and the cartridge case 12 will be ejected.

(11) When the ejector 3 hits the guide 11 of the breech 1, both during the ejection of the cartridge case 12 or during common handling, the guide 11 of the breech 1 is exposed to stressing impacts. These impacts are partly attenuated by the spring 6 of the ejector 3, which makes the breech 1 guide 11 suffer from less stress.

(12) The pin 4 on the ejector 3 fits into the opening 5 in the breech block 2, which locks the breech 1 against being removed (see FIG. 2). When the ejector 3 is moved with a finger of the hand or another object beyond the stop surface 9 in the shooting direction, the pin 4 is pushed out of the opening 5, which allows the breech 1 to be removed out of the groove 10 (see FIG. 3) during cleaning of the firearm or during the replacement of the breach 1 when the firearm is being converted to another gauge.

LIST OF REFERENCE SIGNS

(13) 1 breech 2 breech block 3 ejector 4 ejector pin 5 opening in the breech block 6 ejector spring 7 ejector peg 8 ejector shank 9 stop surface of the ejector 10 groove in the breech block 11 breech guide 12 cartridge case