Firearm and caseless ammunition therefor

Details Firearm and caseless ammunition therefor Firearm and caseless ammunition therefor

1977-05-11

1978-11-07

Bentley, Stephen C.

Ordnance

Automatic

Firing device operation or control

42 16, 42 25, 89 14C, 89 33C, 89179, 89188, 102 38CC, F41D 104

Patent

active

041239636

ABSTRACT:
A firearm for firing caseless ammunition includes a barrel, a receiver, a bolt, and a firing pin. The bolt includes laterally open pockets for receiving a projectile and a separate propellant cartridge. The bolt carries an extractor to extract unspent projectiles. The bolt drives a locking collar to lock itself in forward position. The locking collar is unlocked by the recoil-action of the firing pin. The firing pin is driven by a spring biased hammer; the firing pin then drives the hammer by recoil action, causing the hammer to unlock the locking collar. A gas seal for the firing pin includes a deformable ring which is deformed by ignition gas pressure into sealing engagement with the firing pin. An anti-recoil muzzle at the discharge end of the barrel has a reaction surface thereof cleaned of combustion deposits by a plurality of bristles extending from the barrel. A propellant cartridge comprises a plurality of telescoping nitrocellulose jackets which form a propellant chamber and a primer compartment.

REFERENCES:
patent: 30760 (1860-11-01), Reeder
patent: 941662 (1909-11-01), Smith
patent: 3474560 (1969-10-01), Ramsay
patent: 3722123 (1973-03-01), Parisi

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