Improvements in and relating to crushing devices for coal crushing machines

摘要

538,640. Stamp mills. VEREINIGTE HUTTENWERKE BURBACH-EICH-DUDELINGEN AKT.- GES. July 11, 1939, Nos. 20195 and 20196. Convention dates, July 11, 1938, and July 10, 1939. [Class 59] Each stamp rod g of a coal-crushing machine is formed as a rack and gears with a pinion c, loose on a driving-shaft a and coupled thereto intermittently by a magnetic or other clutch b, so that the stamp is lifted by the pinion but falls freely. An arrangement for holding a stamp in its raised position is shown in Fig. 4. Gripping members h on either side of the rod g are pivoted on levers i connected by an arm k to a fixed bracket l. The members h allow the rod to rise freely but prevent it falling except when an eccentric m is brought into engagement with one of the members h by a hand wheel n.