A WEEKLY JOURNAL OF PRACTICAL INFORMATION IN ART, SCIENCE, MECHANICS, CHEMISTRY AND MANUFACTURES. VOL. VI.—NO. 8.1 NEW YOKE, FEBKUARY 22, 1862. NEW SERIES. A Low Water Detector. being '> actuated near their It is well known that fulcra, a small motion of Ma. 2 … sure of steam forces the Blake & Wheelock, at No. 71 Gold street, New York water into the tube, B, BLAKE'S LOW WATER DETECTOR. 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…
