A mechanical release or trigger device including a body. A trigger forming
a shaft is movably mounted with respect to the body. At least one caliper
is mounted with respect to the body and operatively connected to the
trigger. The caliper is movable between a closed position and an open
position, in response to a movement of the trigger. A sleeve is rotatably
mounted with respect to the trigger and movable along an axis of the
shaft. At least one stop element can be mounted with respect to the shaft
at a first end portion of the sleeve or a second end portion of the
sleeve, to limit axial movement of the sleeve. In one embodiment wherein
the sleeve is asymmetric, and operatively connected to activate another
mechanism such as a safety or firing system, a bias element can be
operatively connected to the sleeve to bias the sleeve towards a first
rotational position.