. Scientific American Volume 85 Number 01 (July 1901) . f^ i. ffi The aggregate tonnage of American vessels Is5,164,839 tons, and the vessels having a tonnage of1,565,587 navigate the Great Lakes. The aggregatetonnage ten years ago, or In 1891, was 4,684,759. Kg. 2.—HEW PYEOMETEB. In the chamber, G, partly filled with water and inwhich plunges the tube, n n. If the vacuum Is greaterthan the water pressure, this will allow air to enterthrough the tube and the vacuum will be practice a small quantity of air always passes luthe tube and the vacuum is kept constant. To main-tain a co
. Scientific American Volume 85 Number 01 (July 1901) . f^ i. ffi The aggregate tonnage of American vessels Is5,164,839 tons, and the vessels having a tonnage of1,565,587 navigate the Great Lakes. The aggregatetonnage ten years ago, or In 1891, was 4,684,759. Kg. 2.—HEW PYEOMETEB. In the chamber, G, partly filled with water and inwhich plunges the tube, n n. If the vacuum Is greaterthan the water pressure, this will allow air to enterthrough the tube and the vacuum will be practice a small quantity of air always passes luthe tube and the vacuum is kept constant. To main-tain a constant temperature of the diaphragm, B, thelatter, as well as a portion of the air-inlet tube, isInclosed in a recipient traversed by the steam com-ing from the aspirator. The air arrives slowly enoughto take the temperature of the steam before reachingthe opening, B. The vacuum is measured by thewater gage, q, and the registering vacuum gage, L,above. On the right of the diagram is the dispositionof the apparatus In the furnace. The entering airpasses fi
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
