Arrangement for stopping the moving parts of a machine cannon ha

Details Arrangement for stopping the moving parts of a machine cannon ha Arrangement for stopping the moving parts of a machine cannon ha

1986-04-07

1987-10-13

Terapane, John F.

Ordnance

Machine guns

Axially moving breech block

89 9, 89 12, F41D 700, F41D 702

Patent

active

046990402

ABSTRACT:
An arrangement for rapidly stopping the movable parts of machine cannons with independent external drives wherein a rotating element, which rotates in dependence to a rotating control drum drivingly connected to the breech block, is stopped at misfiring or delayed firing within the breech block locking period of the firing cycle by a locking element which is actuated by propellant charge gas pressure. The arrangement of the invention prevents a shock-like braking and transfer of the kinetic energy of the movable parts of the machine cannon and provides for an automatic release of the blocking element.
The arrangement includes a rotating rod spring coaxially mounted within the control drum by means of which the kinetic energy of the rotating masses of the breech drive are elastically braked. Such energy transfer can even be effected with a delayed ignition because by means of positive interruption of the propellant charge gases traversing an annular chamber the release of the blocking element is prevented and it is not lifted off a cam disc. This blocking element can, however, be separately lifted of the cam disc by means of a release lever.

REFERENCES:
patent: 4193335 (1980-03-01), Tassie
patent: 4508006 (1985-04-01), Post et al.
patent: 4550641 (1985-11-01), Bruderer et al.

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