Mechanical guns and projectors – Element – Trigger or releasing mechanism
Reexamination Certificate
2000-01-31
2001-01-16
Ricci, John A. (Department: 3712)
Mechanical guns and projectors
Element
Trigger or releasing mechanism
Reexamination Certificate
active
06173706
ABSTRACT:
FIELD
This invention concerns a unique firing mechanism or breech device for archery bows, i.e., for target or hunting bows, wherein the bow string is retained by a releasable latch mechanism, which mechanism is preferably quickly removably mounted on the archer's fingers by a sling device.
PRIOR ART
Heretofore, many bowstring release devices have been proposed, a few of which are shown, for example, in U.S. Pat. Nos. 4,041,926; 5,448,983; 4,567,875; 4,309,975; 4,458,659; and 4,022,181. Such devices typically are encumbered in one or more of the aspects of complexity, cost of manufacture, dimensionally too large for rapid deployment in the field, difficult to use rapidly and to recock, bulkiness when stored in pockets or the like or when simply being stored or held in the archers hand, lack of smoothness and accuracy in use, excessive physical abuse of the bowstring upon repeated firings, cocking of the device requiring excessive motion by the archer which is visible to the game, a partial pull of the trigger cannot easily be retracted where the archer changes his mind to not shoot at that particular instant, or requires too much time, e.g., to retrieve from a pocket and properly affix to a bowstring.
OBJECTS OF THE INVENTION
Objects therefore, of the present invention are: to provide a breech device which is simple and sturdy in construction; which essentially has only three mechanical moving parts; which is compact and easily pocketed and retrieved; which is readily adjustable to vary the trigger sensitivity; which is quickly attachable to a bowstring with little motion by the archer; which is easy on bowstring wear; which in one embodiment injects an element of surprise into the firing operation; and which, by virtue of its construction and finger mounting, is extremely smooth and accurate in use.
SUMMARY OF THE INVENTION
The above and other objects hereinafter appearing have been attained in accordance with the present invention which in one of its broad embodiments and as viewed and interpreted from the drawings herein, and particularly
FIGS. 1
,
15
and
18
, is defined as a breech device for assisting in drawing and releasing an archery bow string, said device comprising a body member having a forward end, a rearward end, an upper portion, a lower portion, a vertically oriented longitudinally extending structural plane, and a longitudinal axis, said forward end comprising support wall means on each side of said plane and forming a generally vertically oriented gap means opening generally longitudinally outwardly at said forward end, trigger means positioned in said gap means and extending generally vertically from said lower portion thru said upper portion and extending upwardly therebeyond, first pivot means on said trigger means and said lower portion for allowing pivoting of said trigger member back and forth generally in said plane, first shoulder means on said trigger means positioned above said first pivot means and within said gap means, latch arm means positioned in said gap means and having a forward end and a rearward end and having a second shoulder means at its rearward end, second pivot means on said forward end of said latch arm means and said forward end of said body member for allowing downward pivoting of said latch arm means within said gap means for engaging said second shoulder means with said first shoulder means and preventing pivoting rearward movement of said trigger means in its firing direction until said trigger means is manually rearwardly pivoted toward its firing position, said second shoulder means and said second pivot means lying in a pivot radius, a bowstring keeper extending downwardly on said forward end of said latch arm means and lying on said first shoulder means side of said pivot radius whereby tension applied to said keeper by drawing of said bowstring will tend to pivot said latch arm means in a direction tending to forcibly maintain engagement of said first and second shoulder means in the cocked trigger position.
In certain preferred embodiments:
(a) said keeper is provided with a laterally extending convex bowstring contact surface which faces generally rearwardly of said body member when said latch arm means is in its position against said arrest shoulder means;
(b) said contact surface has a lateral length of between about 0.5 and 0.75 inches;
(c) an adjustable finger sling is provided on the rearward portion of said body member wherein the sling has a unique and extremely stable capacity adjusting mechanism;
(d) a means is provided for adjusting the trigger sensitivity, i.e., from amateur level to professional hair-trigger action;
(e) a means is provided for adjusting the pull force required for the trigger, i.e., soft pull to hard pull; and
(f) one of the first and second shoulder means comprises a roller member rollably mounted by shaft means on the trigger means or the latch arm means, respectively.
REFERENCES:
patent: 3604407 (1971-09-01), Wilson et al.
patent: 4539968 (1985-09-01), Garvison
patent: 4567875 (1986-02-01), Fletcher
patent: 4625705 (1986-12-01), Willits
patent: 4672945 (1987-06-01), Carlton
patent: 4969448 (1990-11-01), Beyer
patent: 5103796 (1992-04-01), Peck
patent: 5448983 (1995-09-01), Scott
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