Trigger assembly with a safety device for a crossbow

A trigger assembly for a crossbow having a stock and a transverse bow with a bowstring, the trigger assembly comprising:

• a housing adapted to be mounted on the stock and having a top, a bottom, a side, a mouth with a top and a bottom defined transversely in the housing and a slot defined transversely through the side and parallel to the mouth;
• a trigger mounted pivotally in the housing and comprising
• a trigger element protruding out from the bottom of the housing and having a dovetailed recess defined in a top of the trigger element;
• and
• an actuating lever mounted pivotally in the housing, attached to the top of the trigger element and having a hook, a bottom and a dovetailed protrusion formed on the bottom and engaging firmly with the dovetailed recess;
• a bowstring catch mounted pivotally in the housing and having a string hook corresponding to the mouth in the housing and a leg extending downward and selectively engaging the hook on the actuating lever;
• a bowstring catch biasing member mounted in the housing between the housing and the bowstring catch to pivot the string hook out of to mouth;
• a safety pin mounted moveably in to housing and supported on the actuating lever;
• a safety lock mounted moveably in the housing, selectively abutting to top of the safety pin and having a push rod extending transversely from the safety lock and out of the slot in the housing;
• a pushing arm mounted moveably in the housing and having a protrusion abutting the push rod on the safety lock;
• a block mounted pivotally in the housing and having a transverse rod extending transversely from the block and selectively engaged with the pushing arm;
• a block biasing member mounted in the housing and connected to the block to push the block into the mouth when the transverse rod on the block disengages from the front end of the pushing arm;
• and
• a string stop mounted pivotally in the housing, extending into the mouth and corresponding to the block.