Mechanical guns and projectors – Spring – Bow
Patent
1995-01-25
1997-07-22
Ricci, John A.
Mechanical guns and projectors
Spring
Bow
124 351, 124 40, F41B 512
Patent
active
056495200
ABSTRACT:
The present invention is directed to a crossbow trigger mechanism providing improved bowstring retention and release characteristics. The invention further provides a safe and reliable trigger mechanism which enhances accurate shooting with the crossbow. The trigger mechanism comprises a pivotal string release latch for releasably holding a bowstring in a drawn position. The string release latch is pivotable about a first pivot point and has associated therewith a first sear surface. The trigger mechanism further includes a pivotal rocker latch member having a second sear surface which engages the first sear surface on the string release latch to selectively prevent pivotal motion of the string release latch. The rocker latch member is pivotal about a second pivot point and has a portion thereof extending rearward of the second pivot point. A pivotal trigger is operable to pivot the rocker latch member and disengage the first and second sear surfaces to allow pivotal motion of the string release latch for selective release of the bowstring. The trigger is pivotal about a third pivot point and also has a portion thereof extending rearward from the third pivot point. The rearward extending portion of the trigger applies force on the rearward extending portion of the rocker latch member to cause pivoting thereof for disengagement of the first and second sear surfaces. The trigger mechanism is preferably encased within a housing which can be separately installed into a crossbow stock which is positively secured within the crossbow stock to prevent any relative movement therebetween. It is also a feature of the invention to provide an integral sight adjustment system for use with a rear sight of the crossbow. The sight adjustment mechanism is preferably integral to the trigger mechanism to allow simple and effective adjustment of the sight for a particular shooting distance.
REFERENCES:
patent: 1192639 (1916-07-01), Hunholz
patent: 1618749 (1927-02-01), Blizard
patent: 4030473 (1977-06-01), Puryear
patent: 4192281 (1980-03-01), King
patent: 4716880 (1988-01-01), Adkins
patent: 4721092 (1988-01-01), Waiser
patent: 4877008 (1989-10-01), Troubridge
patent: 5085200 (1992-02-01), Horton-Corcoran et al.
Hunter's Manufacturing Co
Ricci John A.
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