Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 380
nded.The girders are, therefore, sixteen in number, andtogether form a gridiron platform, which can be raised or lowered with thevessel upon it. The thirty-two hydraulic cylinders were tested at a pressureof more than 3 tons per square inch. The water is admitted immediatelybeneath the collars at… … Fig. 168.—Sectioji ofColumn. HYDRA ULIC PO TVER. 333 engine. The presses are worked in three groups—one of sixteen, and twoof eight presses,—so arranged that their centres of action form a sort oftripod support, and the presses of each group are so connected that perfectuniformity of pressure is…
Inventions
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