Modern Mechanism: a Practical Treatise On Machines, Motors, And the ...
Modern Mechanism: a Practical Treatise On Machines, Motors, And the ...
Park Benjamin
The book Modern Mechanism: a Practical Treatise On Machines, Motors, And the ... was written by author Park Benjamin Here you can read free online of Modern Mechanism: a Practical Treatise On Machines, Motors, And the ... book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Modern Mechanism: a Practical Treatise On Machines, Motors, And the ... a good or bad book?
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During the hours of heavy traffic, the work calls for an average expenditure of energy equivalent to 400 or 450 horse-power, and sometimes this runs up to 700 horse-power. As it takes less than 100 horse-power to run the machinery and cables, it is evident that this is the most efficient cable road known, only about 20 per cent, of the power being absorbed in running the cable and machinery, whUe in street roads 50 per cent, is always allowed for this, and the actual percentaffe so expended fre...quently exceeds that figure. The variations in the power exerted are sudden and enormous. Sometimes a preponderance of trains on the down grade will send the engines racing around with throttles shut, and instead of absorbing power will give it out. The cable-driving apparatus is at the Brooklyn end of the bridge. Two sets of driving EAILEOAD, CABLE. 713 drams are provided, but only one set is used at a time. The other stands idle, and its cable lies on the ties alongside the pulleys on which the live cable runs.
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