Mechanical guns and projectors – Element – Trigger or releasing mechanism
Patent
1997-10-17
1999-02-16
Ricci, John A.
Mechanical guns and projectors
Element
Trigger or releasing mechanism
F41B 518
Patent
active
058710043
ABSTRACT:
A bowstring retention and release mechanism includes a housing or body with a head rotatable 360.degree. therein and a lower forward projection extending out of the head providing an upward bowstring-engaging surface upon which the bowstring can rest and which, in combination with a downwardly-extending segment of a lever arm, which also extends forwardly outside of the head and which is pivoted within the head, provides for retention and release of the bowstring. The lever arm is biased upwardly for release of the bowstring but is maintained in downward bow-string-retention position by a rearwardly-extending protuberance which cooperates with an activator which is slidably mounted within the head and which is forwardly biased so as to cam the protuberance up an upward incline to a forward step on the activator, thereby preventing the lever arm from upward movement into bowstring-release position. When the trigger is pulled rearwardly, the forward bias is overcome and the activator is pulled rearwardly, permitting the protuberance to leave the step and the lever arm to pivot upwardly into bowstring release position. Upon release of the trigger, the forward bias upon the activator re-exerts itself, forcing the protuberance upwardly along the incline and onto the forward step of the activator, once again locking the downwardly-extending segment of the lever arm into downward and bowstring-retention position. For reinsertion of a bowstring into the mechanism, the trigger is simply pulled rearwardly, causing the lever arm to assume bowstring-release position for insertion of the bowstring and then released, causing the forward bias to reassert itself and the lever arm to assume downward and bowstring retention position.
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