Firearm crane and trigger construction

Claim 1

THE COMBINATION IN A REVOLVER TYPE FIREARM OF: A FRAME HAVING A MECHANISM CAVITY, A CYLINDER RECESS, A CRANE RECESS, AND A LONGITUDINAL BORE EXTENDING BETWEEN SAID MECHANISM CAVITY AND SAID CRANE RECESS; A CRANE HAVING A PIVOT PORTION LOOSELY RECEIVED BY SAID LONGITUDINAL FRAME BORE FOR PIVOTALLY SUPPORTING SAID CRANE FOR SWINGING MOVEMENT INTO AND OUT OF SAID CRANE RECESS, SAID PIVOT PORTION OF THE CRANE HAVING A LONGITUDINAL BORE THEREIN WHICH BORE COMMUNICATES WITH SAID MECHANISM CAVITY; A CYLINDER ATTACHED TO SAID CRANE AND SWINGABLE THEREWITH INTO AND OUT OF SAID CYLINDER RECESS; A TRIGGER HAVING AN UPPER PORTION LOCATED IN SAID MECHANISM CAVITY REARWARDLY OF SAID FRAME BORE AND A LOWER PORTION EXTENDING OUT OF SAID CAVITY AND ADAPTED FOR ENGAGEMENT WITH A FINGER OF A PERSON HOLDING THE FIREARM, SAID TRIGGER BEING PIVOTALLY MOVABLE RELATIVE TO SAID FRAME; A MEMBER PIVOTALLY CONNECTED TO SAID TRIGGER AND EXTENDING FORWARDLY THEREFROM INTO SAID CRANE BORE; AND SPRING MEANS HOUSED IN SAID CRANE BORE WHICH SPRING MEANS ENGAGES SAID MEMBER AND BIASES THE SAME AS TO OPPOSE REARWARD MOVEMENT OF THE LOWER TRIGGER PORTION AND WHICH SERVES TO RETURN SAID LOWER TRIGGER PORTION TO A FORWARD POSITION AFTER SUCH REARWARD MOVEMENT.