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The Iron Age 1885-02-12: Vol 35 Iss 7

1885 Reed Business Information US

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INDEX TO READING MATTER r PAGE 30 Published Vol. XX XV: No. 7. every comparative Efliciencies of Steam and Hydranlice Elevators. 4 correspondent in the February num- 1. of Mechanics, writes: The term hy- iraulic elevators is applied to elevators in which the actual motive-power is furnished 6 a hydraulic motor, while the hydraulic agsure necessary for the operation of the motor is furnished by the natural head of the water. ate . sufficient to operate the motor an artificial head need not be used, but in situations where this is not the case an artificial head, yoduced by pumping water to a reservoir situated some distance above the hydraulic angine, or by pumping water directly into a -he motor, must be taken advantage of. This form of elevator is rapidly coming into favor, jue principally to the more ready adjustment f the system over the ordinary hoisting en- ine, and also due to the fact that it is claimed to be more economical in steam con- sumption than the ‘‘ steam elevator.” In order to fully understand the problem of the comparative efficiencies, we must con- sider first the theoretical efficiency of the hydraulic elevator as compared with the steam elevator. This question…

Citation

The Iron Age 1885-02-12: Vol 35 Iss 7. Reed Business Information US. 1885.