Patent: David Leopold Cohn

Britain 610
A.D. 1866, 28th February. NĀ° 610.

Breech-loading Revolving Fire-arms, &c.

(This Invention received Provisional Protection only.)

PROVISIONAL SPECIFICATION left by David Leopold Cohn at the Office of the Commissioners of Patents, with his Petition, on the 28th February 3866.ā€” A communication from abroad by Joseph Grunbaum, of Vienna, Austria.

I, DAVID LEOPOLD Cone, of Islington, in the County of Middlesex, Merchant, do hereby declare the nature of the said Invention for “Improvements In Breech-Loading Revolving Fire-Leis, And In Apparatus For Extracting Cartridges Or Cartridge Cases Therefrom,” to be as follows:ā€”

My Invention relates, firstly, to improved arrangements for effecting the successive explosion of the several charges of the revolver. Instead of making the barrels to revolve so that they are presented successively to the hammer I fit in a block behind the barrels a cylinder, on the face of which a striker is formed, while the rear end carries a pin or projection; a spring tends to press back the cylinder to withdraw the striker within the face of the block. The rear end of the cylinder is also formed with a series of notches, into which the upper end of a long paul plate takes; the lower end of this plate is connected to the trigger plate, and a spring acts behind it to make it enter the notches.

The action is as follows:ā€” Before the barrels are to be charged the trigger is drawn back; this movement causes the trigger plate and the lower end of the paul plate to move back, and the upper end of the paul plate by pressing against the notch in which it is engaged causes the cylinder carrying the striker to perform a twelfth of a revolution (in a sixth barrel revolver). The hammer is at the same time moved to half cock by the action of the lock, and the cylinder is forced back by its spring to withdraw the striker; the barrels are then allowed to fall on their hinge ; by moving round the ordinary locking lever the cartridges are inserted, the barrels are again raised and locked ; then to fire the charge draw the trigger further back, and the paul plate is thereby caused to impart another twelfth of a revolution to the cylinder by acting in its notch, and it then rises over into the next following notch ; the hammer next comes down upon the pin or projection on the rear of the cylinder, drives in the cylinder so that the striker explodes the charge of the barrel opposite thereto. By again drawing back the trigger the striker is with-drawn, the paul plate imparts another sixth revolution to the notched cylinder to bring the striker opposite the next barrel, the hammer comes down to force in the cylinder and striker, and the same operations are repeated until all the charges have been fired.

Instead of fitting the cylinder in the block at the rear of the barrel I fit it, on the front of the hammer so that it moves backwards and forwards with the hammer, and I form the block with an opening to receive the cylinder when the hammer comes down to explode the charge.

My Invention relates, secondly, to apparatus for extracting the cartridges or empty cartridge cases. This apparatus consists of a frame shaped to the configuration of the divisions between the bands and carrying two rods, one of which enters an aperture in the central portion of the barrels, and the other enters a block below the barrels. When the cartridges are inserted in the barrels the flanges on their rear ends bear against this frame, and when it is required to extract the empty cases or the cartridges themselves the frame is pressed back, and the cases or cartridges are drawn back with it.