Dual-mode firing mechanism

Details Dual-mode firing mechanism Dual-mode firing mechanism

1979-01-02

1980-07-15

Bentley, Stephen C.

Ordnance

Automatic

Regulation of speed or rate of automatic fire

F41D 1110

Patent

active

042122279

ABSTRACT:
A dual-mode firing mechanism for a high-rate-of-fire rifle capable of fir small arm cartridges conventionally by the application of a hammer, and inertially, bypassing the trigger mechanism, to provide sustained fire of a discrete number of cartridges in a burst. A trigger hammer fires the first round and simultaneously locks the firing pin in a firing position relative to an operating rod assembly. The operating rod assembly with the firing pin in the firing position, then cycles between a full forward or firing position and a short stroke rearward position in synchronism with fresh cartridges being inserted into the battery. The cycling continues until a last cartridge in the burst is fired. After the last round the mechanism returns to its original or non-firing position, and is ready for the next burst. The mechanism is rapid, for example, approximately 4,000 to 5,000 shots per minute can be fired in each three round burst.

REFERENCES:
patent: 3817148 (1974-06-01), Schirneker

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