Pretriggerable trigger mechanism for sporting rifles

A pretriggerable trigger mechanism for sporting rifles, which comprises

• a sear, which is pivotally movable between an intercepting position and a non-intercepting position,
• a sear spring urging said sear toward said intercepting position,
• an intermediate lever pivoted on a stationary axis and adapted to assume a locking position, in which said intermediate lever backs said sear in said intercepting position,
• a trigger, which is adapted to assume an intermediate position and pivotally movable on a pivotal axis from said intermediate position forwardly to a defined set position and rearwardly to a triggered position, said trigger having an extension, which is arranged directly to engage said intermediate lever in said locking position when said trigger is in said intermediate position, to be clear of said intermediate lever when said trigger is in said preset position, and to cause said intermediate lever to move out of said locking position to release said sear for a movement out of said intercepting position toward said non-intercepting position against the action of said sear spring in response to a movement of said trigger from said intermediate position to said triggered position
• an abutment, and
• a compression spring retained between said abutment and said trigger and opposing a movement of said trigger to said preset position, said spring being arranged to have a line of action extending through said pivotal axis when, and only when, said trigger is in said preset position, said compression spring being arranged to cause said trigger to move beyond said intermediate position to said triggered position when said trigger has been slightly moved from said preset position toward said intermediate position.