An improved bulletless and cartridgeless firearm for use in theatres, studios and the like

摘要

625,230. Firearms for theatrical use. D. & P. STUDIOS, Ltd., and SNOW, A. ACKLAND-. June 30, 1947, No. 17188. [Class 132 (i)] A firearm for theatrical use comprises a hollow barrel, a stock, a trigger, means admitting an explosive gaseous mixture to the barrel and electric means adapted to ignite the gaseous mixture on pressing the trigger. -In the figure, a firearm of the sub-machine gun type comprises barrel a, stock g, trigger i and gas conduits eSP2/SP, fSP2/SP supplying for example oxygen and acetylene to mixing chamber c. Gas tube b leads from the mixing chamber to the nozzle of the gun where sparking points h,. hSP1/SP are situated. Electric motor l rotates the rotary distributer and make and break device k controlling the primary and secondary circuits of induction coil j. High tension cables o and r supply high tension impulses to sparking point h, while sparking point hSP1/SP is earthed via the metal parts of the firearm and earthing lead n. But unless the trigger is pressed, no sparking occurs at the spark points since leads o and n are normally connected through tongue p and plunger s, which break contact with each other on pressing the trigger. If desired, a single spark generating apparatus can deliver spark impulses on two or more separate circuits and thus operate two or more firearms.