Leadership

HYDRAULIC CRANES.

Issue 18 and Volume 1895 18.

HYDRAULIC CRANES. Subjoined are cuts of Hydraulic Cranes manufactured by the Addyston Pipe and Steel Company, of Cleveland, Ohio: No. 1 illustrates a crane of the jib-lifting type, designed to lift six tons under a working pressure of 400 pounds to the square inch. The mast is made up of two steel “ I Beams”; the top spindle has roller bearings; bottom spindle rests on steel balls. The jib is also formed by two steel “I Beams” supported by two diagonal rods running to two roller bearing flanged wheels on back of mast. These wheels are connected with wheels at heel of jib by two steel “ T Irons”; these wheels are also roller bearing and flanged. The trolley carriage is mounted upon four wheels (flanged) with roller bearings. The cylinder is located between two “ I Beams ” forming the mast. A joad of six tons can be easily…

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