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The Iron Age 1881-08-25: Vol 28 Iss 8

1881 Reed Business Information US

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Vol. XXVIII: No. 8. The Iron Age A Review of the Hardware, Iron and Metal Trades. Published every Thursday Morning by DAVID WILLIAMS, No. 83 Reade Street, New York. Entered at the Post Office, New York, as Second-Class Matter. New York, Thursday, August 25, 1881. $2°50 a rear, Including Postage Single Copies, Ten Cenés. | | On Hydraulic Machinery for Steel space, or, in other words, equal to the dis-| by A. The valve C is a piston valve, and is Works.* BY MICHAEL SCOTT. It is well known that direct-acting hy- draulic cranes and lifts of the ordinary kind are imperfect in these two particulars: The weight of the moving parts is considerable, and loss is incurred " the necessity of rais- ing this weight as well as the load ; secondly, if the lifting power of the crane be invaria- ble, then, in raising variable loads, power must occasionally ba lost. It would, there- fore, appear to be desirable to provide means by which the weight of the moving parts of cranes and lifts should be balanced, and the wer should be varied ia proportion to the foad to be raised. This has been done; but I have been trying to devise something which should be less complicated and costly, be more readily appl…

Citation

The Iron Age 1881-08-25: Vol 28 Iss 8. Reed Business Information US. 1881.