Crossbow trigger mechanism

Details Crossbow trigger mechanism Crossbow trigger mechanism

1984-11-28

1989-10-31

Coven, Edward M.

Mechanical guns and projectors

Spring

Bow

F41B 500

Patent

active

048770086

ABSTRACT:
A novel trigger mechanism for a crossbow is disclosed, in which a relatively large mechanical advantage is employed to obtain reduced trigger pressures in comparison with trigger pressures in the prior art. The mechanism has two main components, namely a trigger and a catch, pivotally mounted in a case which is in turn mounted in the crossbow stock. The trigger has a trigger arm extending downwardly from the trigger pivot point and out of the case, and a sear arm extending forwardly and having a rearward-facing sear surface. The catch is installed with its pivot point slightly above the plane of a bowstring entry area in the case, and thus slightly above the plane of the bowstring. The catch has a bowstring-retaining hook portion extending forwardly from the catch pivot point, and a catch arm extending downwardly from the catch pivot point and terminating in a forward-facing sear surface, which is engaged by the sear surface of the trigger sear arm when the crossbow is armed. By virtue of a relatively high mechanical advantage in the catch, of about 4.5 to 1, combined with the mechanical advantage in the trigger and with lubrication and/or polishing of the sear surfaces, low trigger pressure is achieved. The trigger pressure is augmented by means of a spring installed between a portion of the case and the trigger.

REFERENCES:
patent: 1469610 (1923-10-01), Ustynik
patent: 2278535 (1942-04-01), Dobson
patent: 2500509 (1950-03-01), Bailey
patent: 2609810 (1952-09-01), Gruner
patent: 2842114 (1958-07-01), Duncan
patent: 3490429 (1970-01-01), Benedict
patent: 3538901 (1970-11-01), Switack
patent: 3788299 (1974-01-01), Mathews
patent: 4192281 (1980-03-01), King
patent: 4206740 (1980-06-01), Lydon
patent: 4232649 (1980-11-01), Allen et al.
patent: 4294222 (1981-10-01), Pelsue

Affiliated with

Also associated with

Rating

Crossbow trigger mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Crossbow trigger mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crossbow trigger mechanism will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-620651