Ordnance – Automatic – Breech block lock
Patent
1995-06-07
1997-10-28
Eldred, J. Woodrow
Ordnance
Automatic
Breech block lock
42 16, F41A 344
Patent
active
056820070
ABSTRACT:
A breech bolt lock-up device for a firearm absorbs linear inertial forces and utilizes the absorbed inertial force to linearly cycle the firearm. The lock-up device includes an inner lock sleeve and an outer lock sleeve. A locking device will releasably lock the inner lock sleeve with the outer lock sleeve. A cam member is axially aligned with the inner lock sleeve and the outer lock sleeve. The cam member is engagable with the locking device for releasing engagement between the inner lock sleeve and the outer lock sleeve. The cam member linearly reciprocates relative to the gun barrel. A cam spring is provided for storing linear inertia energy when the cam member moves forward. A recoil spring will store linear inertia energy when the cam member moves rearwardly.
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Rick Jamison, Shooting Times, Feb. 1995, pp. 65-70, 91.
Eldred J. Woodrow
Hesco, Inc.
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