: Ty, NU WMH) ON h<TRER KE VOL. VI.---NO. 8.' NEW SERIES. A Low Water Detector. … sure of steam forces the Blake & Wheelock, at No. 71 Gold street, New York water into the tube, B, filling it, when the stop city. cock, Q, is closed. As long as the water in the boiler The mode in which this expansion is made to sound remains above the level of the pipe, e’, the tube, B, the…
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