GB139713A - Improvements in or relating to line throwing guns - Google Patents

Abstract

139,713. Wade, H., (General Ordnance Co.). June 27, 1919. Ordnance, muzzle-loading; breech mechanism. -Consists in providing a muzzle-loading smoothbore line-throwing gun with a concavity at the rear of the chamber to receive a firing-pin which is spring-retracted so as to protrude from the rear of the gun in position to be struck by a pivoted spring-controlled hammer provided with cocking and releasing means. Fig. 1 shows a gun A adapted to receive line-throwing ammunition comprising a combined cartridge Y and projectile X as described in Specification 136,777, [Class 9 (i), Ammunition &c.]. The rear a<o> of the chamber is concave to provide a space behind the cartridge to receive the front of the firing-pin K, which is mounted within a removable block H, Fig. 1<a>, and is pressed rearwards by a spring I acting on a shoulder k. This shoulder acts as a valve engaging a seat k<2> to prevent rearward escape of the gun gases. Firing is effected by a hammer M pivoted to the gun at a<2> and cocked against the action of a spring P by inserting the finger in a hole m<1>. The hammer is retained in cocked position by the engagement of its toe n<3> with a toe q on a sear lever Q pivoted to the gun at R and pressed against a stop U by a spring S. When the lanyard T is pulled, the hammer is released and strikes the protruding rear end of the firing-pin K, which is moved forwards against the action of the spring I to strike the primer y of the cartridge Y.