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Scientific American, Vol. 62, No. 7 (February 1890) (1890)

leaf 9

An illustration from Scientific American, Vol. 62, No. 7 (February 1890), 1890, leaf 9
r, especi- the pumping, a leak was supposed to exist in one of apparatus for use in connection with telegraph lines, ally for fluctuating aind intermittent purposes. That the mains running from the Blackfriars station. An by which a signal may be sent to any station upon the dream has been… … be obtained at the top of a high building through magnets, gear, and ratchet wheels, TAYLOB'S ELECTBIC SIGNAL. without the aid of a fire engine. Captain move a wheel on the periphery of which are Shaw has expressed a very decided opinion notches corresponding to the signal, on the as to the value…

Lever · Munn · Current · Scientific American · Rods · Express money · Engine room · Horse power · Rocking bar · Phosphor bronze · High pressure · Grand central · Hydraulic power · Carbolic acid

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