Adjustable hammer main spring tensioning device for a revolver

Details Adjustable hammer main spring tensioning device for a revolver Adjustable hammer main spring tensioning device for a revolver

1998-03-30

2000-01-25

Jordan, Charles T.

Firearms

Revolvers

Firing mechanism

F41C 314

Patent

active

060166193

ABSTRACT:
An adjustable tensioning device for a revolver hammer main spring where the main spring is preferably a leaf spring that is maintained in the grip frame, between a hammer spring mounting and a seat formed in the grip frame, and the adjustable tensioning device is a bell crank pivotally mounted in the grip frame and having surfaces that, respectively, are engaged by turning a screw fitted through the grip butt end to lift the one or first bell crank surface to as to pivot the other or second bell crank surface into the leaf spring, increasing the bow therein. The increase in leaf spring bow translates to an increase in force as is needed to be applied to the revolver trigger to release the hammer to fire the revolver and provides an increase in the speed of hammer fall and the force that the hammer applies to a cartridge primer. Optionally, a force as can be applied to the first bell crank surface by employing a plurality of screws fitted that are individually turned through the grip frame butt end to individually engage and lift the first bell crank surface to pivot the second bell crank surface into the leaf spring.

REFERENCES:
patent: 140028 (1873-06-01), Galand
patent: 720775 (1903-02-01), Beckwith
patent: 849825 (1907-04-01), Allen
patent: 1972763 (1934-09-01), Dutton
patent: 5235763 (1993-08-01), Nosler et al.
patent: 5671560 (1997-09-01), Meller

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