US 4,455,919 AGranted

Last shot bolt hold-open device

AssigneeThe Marlin Firearms Company

InventorsWilliam E. Osborne, Nicholas A. Ketre

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Abstract

Action disabling device in a firearm having among its conventional components a spring-closed breech bolt, a tubular magazine, and a pivoted cartridge lifter. The disabling device is in the form of an operating arm pivoted with one end to a fixed part of the action so as to be swingable with its other end into active and inactive positions in which the same is in and out, respectively, of the closing path of the breech bolt, and is normally spring-urged into its inactive position, with this operating arm being, on overtravel of the lifter in lift direction for lack of a cartridge thereon, engaged and taken along by the lifter into its active position to stop the breech bolt on partial closure of the same. The operating arm is one of the arms of a double-arm lever the other arm of which projects to the outside of the receiver and is there accessible to an operator's finger for swinging the operating arm to its inactive position.

Claims4

Dependent claims

In a firearm, the combination with an action having a spring-closed breech bolt reciprocable in the direction of its longitudinal axis, a magazine tube with a cartridge feed spring, a feed throat, a cartridge lifter mounted for pivoting about a fixed axis normal to the longitudinal bolt axis and being urged in lift direction by a lifter spring, with said lifter being bolt-operated into depressed position, and overtraveling in lift direction on cartridge feed interruption to said throat, of an action disabling device providing an operating arm mounted with one end in the action for pivoting about a fixed axis parallel to the pivot axis of the lifter into active and inactive positions in which its other end is in and out, respectively, of the path of the bolt in closing direction, a spring urging said arm into its inactive position, and a finger on the lifter engaging said arm in its inactive position remote from its pivot axis and swinging it to its active position on said overtravel of the lifter to stop the breech bolt in partially closed position, with the bolt being released for full closure on rocking said arm to its inactive position.

Dependencies are inferred from the claim text.