FIRING MECHANISM OF DOUBLE-BARREL GRENADE THROWER Russian patent published in 2002 - IPC

FIELD: military equipment, close combat weapons, in particular. SUBSTANCE: firing mechanism of double-barrel grenade thrower includes firing pin with firing springs, sears, cocking mechanism and trigger assembly with one trigger. Firing pins with strikers are placed in split guides and in bushings, rests for interaction with front butts of firing springs located in bores of guides are screwed on front parts of firing pins. Protrusions for interaction with rear butts of firing springs are made in middle parts of firing pins. Protrusions can move in grooves of bushings. Two grooves with inertial and firing rests for interaction with sears are made in middle parts of firing pins. Tail parts of firing pins have flats on two sides with collars to rest against faces of grooves in cocking recess with lockpin anchored in it for interaction with longitudinal grooves of cocking lever are put on lateral axle in lower part of mechanism body. Sears are located in vertical grooves of body and carry firing and uncoupling protrusions. Spring-loaded blocking fixing arms with cones for interaction with conical sockets on axle of bolthead are installed beneath firing protrusions in through vertical hole. Sears have different lengths to position their uncoupling protrusions at one level with release made fast to rear part of trigger axle and having firing bevel at angle of 20 degrees with respect to trigger axle on one side and groove equal in thickness to protrusions of sears and parallel to trigger axle on the other side. Trigger interacting with shoulder on axle and shifter made fast to trigger axle with fixing relative to release are positioned on trigger axle. Through grooves are made in side walls of trigger body in parallel to trigger axle which thickness corresponds to flag of shifter. EFFECT: enhanced reliability and operational safety of grenade thrower. 9 dwg