The ejector rod (14) passes through the center of the arbor of the crane supporting the cylinder, and, projecting under the barrel, is terminated by the ejector-rod head (13). The crane fits into a recess in the frame below the barrel and turns on its pivot arm, which rotates in a hole in that part of the frame below the opening for the cylinder, and is secured by the crane lock (5) and crane-lock screw (6). It revolves around and is supported on a central arbor of the crane (3). The pressure of the rebound lever (11) on the lug on the hand insures the engagement of the hand with the ratchet. The hand (10) is attached by its pivot to the trigger, and as the latter swings on its pin when the hammer is being cocked, the hand raised, revolves the cylinder, and serves with the bolt (7) to lock the cylinder in proper position at time of firing, i.e., the axis of the chamber containing cartridge to be fired coinciding with the axis of the bore of the barrel. The object of the cylinder bolt is to hold the firing chamber in line with the barrel, and also to prevent the cylinder making more than one-sixth of a revolution at the time of cocking. During the first part of the movement of the trigger (32) in cocking the revolver, the nose of the bolt is withdrawn from the cylinder by rear end of bolt coming in contact with lug on rebound lever, permitting the rotation thereof. The cylinder-bolt spring (8) pressing upward causes the nose of the bolt (7) to project through a slot in the frame ready to enter one of the rectangular cuts in the surface of the cylinder (22). The cylinder bolt (7) is pivoted on its screw (9), which is supported on right side of frame. Pressure on the trigger will release the hammer, which, under the action of the mainspring (34), will fall and strike the cartridge. In firing single action, the hammer (26) is first pulled back with the thumb until the upper edge of the trigger (32) engages in the full-cock notch in the front and of the lower part of the hammer. In firing double action, pressure upon the trigger (32) causes its upper edge to engage the hammer strut (23) and thereby raises the hammer (26) until nearly in full-cock position, when the strut will escape from the trigger, and the hammer, under action of the main-spring (34), will fall and strike the cartridge. The revolver may be used either single action or double action. The safety lever (31) being pinned to the trigger (32) by this same motion moves the safety (30) upward in front of the hammer (26). The lower arm of the mainspring (34) bears on the upper surface of the rebound lever (11), so that the latter, when the trigger (32) is released after firing a shot, carries the hammer back to its safety position and forces the trigger forward, bringing the hand back to its forward and lowest position. The lower end of the mainspring (34) fits into a slot in the frame, and its upper end engages the hammer stirrup (28). The rebound lever (11) is pivoted on its pin (12) within grip of the frame. The hammer (26) and trigger (32) are pivoted on their respective pins, which are fastened in the right side of the frame (42). The lock mechanism is contained in the frame and consists of the hammer (26) with its stirrup (28), stirrup pin (29), strut (23), strut pin (24), and strut spring (25) the trigger (32) with its pin (33), the rebound lever (11) the hand (10) the cylinder bolt (7) with its spring (8) the mainspring (34), which also serves as a rebound-lever spring, hand spring, and trigger spring the safety (30) and safety lever (31). The rear sight is merely a longitudinal groove in the upper surface of the frame. The front sight (43) is brazed on the barrel. The barrel (41) is firmly screwed to the frame (42). In the plates, parts are given the same numbers as in the list of component parts and in the description that follows. Plate III shows the component parts, except the barrel, sight, and frame. Plate II shows the revolver with the side plate and stock removed, and with cylinder and other parts cross sectioned to show construction. Hammer, firing pin, and firing-pin rivet. Revolver with the side plate and stock removedĢ6. The Colt's double-action revolvers, caliber.
50 CALIBRE REVOLVER MANUAL
This manual is published for the information and government of the Regular Army and Organized Militia of the United States.ĭESCRIPTION OF COLT'S DOUBLE-ACTION REVOLVER, CALIBER. WAR DEPARTMENT, OFFICE OF THE CHIEF OF ORDNANCE WITH RULES FOR MANAGEMENT, MEMORANDA OF TRAJECTORY, AND DESCRIPTION OF AMMUNITION DESCRIPTION OF THE Colt's DOUBLE-ACTION REVOLVERĭESCRIPTION OF THE Colt's Double-Action Revolver