DEVICE FOR PROTECTION OF TANK GUN BARREL Russian patent published in 1999 - IPC

FIELD: devices of tank gun armament providing for protection of barrels against break in the process of fire when soil gets into the bore. SUBSTANCE: a fixed bush is attached to the thicker part of the barrel tube, and a movable bush is tightened to the fixed bush by means of springs through supports. The movable bush carries double-arm levers with weights for resting on adjusting screws on one side, and on catches tightened through washers by springs on the other side. The fixed bush carries flag indicators of the day and night sights, which are tightened by leaf springs for location by spring-loaded stoppers. When, the barrel is driven into soil, flag indicators jump out in the field of vision of the gun layer thus indicating the break of the cover. EFFECT: enhanced reliability of gun armament due to reduction of its failures. 2 dwg