Patent: William Tranter

British Patent 3622

Breech actions, revolving-chamber. – In a revolver the frame or break-off is formed with a hinged part which can be opened to allow of the cartridge cases being pushed out by a sliding-rod actuated by a lever rotating a pinion at its end which engages with rack teeth formed on the bottom of the barrel.  In another arrangement, the extractor rod is mounted on a hinged arm on the frame in front of the revolving cylinder, so that, while not in use, the rod may be made to lie under the cylinder, but, when required for use, may be raised into position by turning the arm on which it is mounted.