Abstract: A device for positively blocking the firing pin in a firearm having a reciprocating breech-bolt that is substantially enclosed within the receiver, in which a finger-piece is provided on the outside of the receiver for shifting a safety bar into and out of a position to move a member on the breech-bolt into or out of a blocking position with respect to the firing pin such that the firing pin can not be driven home to discharge a cartridge.
Abstract: A gas-sealing device for gas-operated firearms of the tubular-magazine type in which a pair of radially flexible piston-rings are provided for sealing the gases within the annular chamber between the gas cylinder and the magazine tube. Each piston-ring is provided with a gas-impingement surface so disposed that the pressure of the gases in the gas chamber against such impingement surfaces forces one of the rings outward into sealing engagement with the walls of the cylinder and the other inward into sealing engagement with the magazine tube.
Abstract: A gas-power system for an autoloading shotgun in which a pair of gas cylinders are mounted on opposite sides of and between the barrel and the magazine tube. An inertial weight is slidably mounted on the magazine for engagement by the pistons, which are positively retained within their cylinders for limited movement when a shell is discharged. The inertial weight is connected to the bolt-mechanism by a pair of action bars.
Abstract: A detent device for a magazine cap on a tubular-magazine firearm, in which the magazine spring is employed to urge a detent member at the front end of the magazine into engagement with a detent surface inside the cap in order to prevent accidental loosening of the cap.
Abstract: A disconnector for the trigger mechanism of a repeating firearm, in which the trigger must be disconnected from the sear during the reloading cycle so that the sear can re-engage and cock the firing member even though the trigger is still retracted when the reloading cycle is complete. The disconnector is directly engaged by a portion of the reciprocating breech-bolt mechanism in order to disconnect the sear, rendering the trigger inoperative until it is released by the shooter.
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