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A spring-gun, booby trap gun etc. is a gun, often a shotgun, rigged to fire when a string or other triggering device is tripped by contact of sufficient force to "spring" the trigger so that anyone stumbling over or treading on it would discharge the gun. Setting or maintaining a spring-gun is illegal in many places.
Firearms use triggers to initiate the firing of a cartridge seated within the gun barrel chamber.This is accomplished by actuating a striking device through a combination of mainspring (which stores elastic energy), a trap mechanism that can hold the spring under tension, an intermediate mechanism to transmit the kinetic energy from the spring releasing, and a firing pin to eventually strike ...
The inertial mass remains stationary, compressing a spring. The bolt remains locked to the barrel, which in turn is rigidly attached to the frame. The compressed spring forces the inertial mass rearwards until it transfers its momentum to the bolt. The bolt unlocks and moves to the rear, ejecting the fired round and compressing the return spring.
The West Spring Gun was a bomb-throwing catapult used by British, Canadian and Australian forces during World War I. It was designed to throw a hand grenade in a high trajectory into enemy trenches .
Mainsprings can come in many shapes, such as a cylindrical spring (Mosin-Nagant, TT-33, Colt M1911), plate spring (Nagant revolver model 1895, Makarov pistol) or spiral spring (Kalashnikov). On a number of automatic firearms, the recoil spring may also function as a mainspring (FN Browning M1900, Degtyaryov machine gun, and some submachine guns).
Katko v. Briney, 183 N.W.2d 657 (Iowa 1971), is a court case decided by the Iowa Supreme Court, in which homeowners Edward and Bertha Briney were held liable for battery for injuries caused to trespasser Marvin Katko, who set off a spring gun set as a mantrap in an uninhabited house on their property. [1]
Spring-powered airsoft guns (or "air-cocking guns" as called by Tokyo Marui) are single-shot devices that use the elastic potential energy stored within a compressed coil spring to drive a piston air pump, which is released upon trigger-pull and rapidly pressurizes the air within the pump cylinder to in turn "blow" pellets down the gun barrel.
The top of the barrel was stamped BSA GUNS LTD ENGLAND followed by a BSA piled arms symbol and the air chamber was stamped BSA AIRSPORTER between the scope rails. It had a black painted finish, fitted with a beech wood stock and a rubber recoil pad, being a spring-gun suffered from recoil and was quite noisy. Range was limited to about 35m ...