Tripping mechanism for semiautomatic and automatic firearms

Details Tripping mechanism for semiautomatic and automatic firearms Tripping mechanism for semiautomatic and automatic firearms

1992-11-23

1994-08-23

Bentley, Stephen C.

Ordnance

Automatic

Firing device operation or control

89149, F41A 1946

Patent

active

053397215

ABSTRACT:
The invention relates to a tripping mechanism for semiautomatic and automatic firearms with a closed-type bolt carriage and which can be used in either a single shot firing mode or an automatic firing mode. The mechanism has a sear 4 slidably fitted on the trigger between the oscillating pivot 5 of the trigger and a resting plane 6a formed on the trigger, away from the pivot. The sear is stressed by a spring 11 which normally pushes it towards the hammer to interact with the latter. The sear 4 is susceptible to movement with the trigger when the trigger is operated and is also susceptible to a longitudinal sliding on the trigger in one direction due to spring 11 and in the opposite direction due to the hammer at least during the engaging in armed position phase, as well as the balancing phase between oscillating pivot 5 and resting plane 6a.

REFERENCES:
patent: 1004424 (1911-09-01), Hennick
patent: 2780145 (1957-02-01), Saive
patent: 3015993 (1962-01-01), Franchi
patent: 3029708 (1962-04-01), Marchisio

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