| 摘要 |
FIELD: portable fire arms whose cases are used as case cartridge chamber and barrel in firing; self-protection devices. ^ SUBSTANCE: proposed fire arms has body with box-shaped magazine with spring-loaded cartridge feeder, light source with electrical circuit having movable contact and trigger lever with axle and recoil spring located in its channel. Back plate secured immovably in rear portion of body is used for automatic feed of cartridges to line of fire and removal of spent cases; this back plate has hole for extending of movable contact; front wall of magazine has hole for escape of bullet which is coaxial relative to said hole in back plate. Mounted in magazine neck is frame which is movable in horizontal plane and is provided with hole corresponding to horizontal section of magazine channel; it has visor for mouth of case rest and pair of projections for rest of case flange; width of said projections is lesser than width of case bore and passage between them is lesser than diameter of bore; projection of visor into magazine channel corresponds to width of projections. When frame is shifted forward at definite moment of firing, case moves upward due to action of spring of cartridge feeder and then it moves backward under action of frame returning to initial position and due to shoulder found on front surface of back plate which is located above hole for extending of contact. Next cartridge rests against visor and shoulders of frame and is fixed in line of fire. Trigger lever has three arms; it is engageable with frame in its lower position through leverage including the link which forms translational pair with frame; fitted on its free end is spring-loaded two-arm trigger cam; one arm is engageable with lower arm of trigger lever and second arm is engageable with mating surface of back plate. Rear part of movable contact having thrust bead is located in bush mounted coaxially and engageable with upper end of trigger lever; bush is spring-loaded relative to back plate towards opening of electrical circuit and movable contact is spring-loaded towards closing of electrical circuit. In front portion of frame there is front sight; backsight is provided in rear portion; frame is made from current conducting material and is used as part of electrical circuit. ^ EFFECT: reduced overall dimension of fire arms; possibility of using cartridges of larger calibers. ^ 3 cl, 6 dwg |
