GB854061A - Improvements in, or relating to appliances for use in the slaughtering of animals - Google Patents

Abstract

854,061. Slaughtering pistols. ACCLES & SHELVOKE Ltd. Aug. 6, 1959 [May 6, 1958], No. 14391/58. Class 119. In a slaughtering pistol of the captive-bolt type, the barrel 14, Fig. 1, is assembled to a body 10 to which a handle 60 is also assembled, a firing pin 63 and its spring 52 are accommodated within the body 10 and a manually operable cocking lever 68a is mounted on the handle for stressing the spring 52 in preparation for firing. When the lever 68a is pulled towards the handle 60, a trip rod 57 is pulled down against the action of a spring 71, taking with it one arm 55 of the torsion spring 52, the other arm 54 of which engages in a recess 62 in the firing pin 63 and is thus stressed. Movement of the firing pin 63 is prevented by its engagement in one end of a slot 78a in a sear rod 78 urged forwardly by a spring 84 and protruding forwardly of the body 10 at 82. The slot 78a and firing pin 63 are so shaped that on rearward movement of the sear rod 78, the firing pin is released to pass through the slot and fire a cartridge in a radial cartridge chamber 86 formed in a cylindrical breech block member 17 and opening into a space 39 in the barrel and breech block assembly behind the piston 28. A spring-urged contact rod 45 is slidably mounted in a cylindrical guide 43 secured to the barrel 14. On swinging the muzzle end of the pistol towards the animal's head, the head 50 of the contact rod 45 engages the head of the animal and the rod 45 is pressed rearwardly. A tapered end 49 of the rod thus engages a recess 83 in the head 82 of the sear rod to move it rearwardly and thus release the firing pin. The breech block 17 is secured to the barrel 14 by a screw-threaded extension 18 and the assembly is rotatably mounted in the body 10 so as to provide access to the chamber 86 for loading a fresh cartridge. A cartridge extractor 87, Fig. 2 is located in the breech block and is so arranged that on rotation of the barrel and breech block in the body 10 after firing, a projecting nose 90 of the extractor engages a cam groove 89 in the body 10 to move the extractor outwardly and eject the spent cartridge. In another embodiment, Fig. 5 (not shown), no contact rod is provided, the sear rod 78 being operated by a bell crank lever 115 so arranged that on pressing the handle lever the spring 52 is first stressed and then the arm 117 of the lever 115 moves the sear rod 78 rearwardly to release the firing pin.