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Scientific American, Vol. 36, No. 23 (June 1877) (1877)
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discharge opening. The stem is screw-threaded, so that never close both openings at once; so that there is always a omitted in the section forming the bottom of the column, free discharge for the water. In the shell above the upper the valve may be easily adjusted to either seat. It will be when in… … SOUTH STBEET BEIDGE, PHILADELPHIA, PA. © 1877 SCIENTIFIC AMERICAN, INC.Patents · Iron · Inches · Valve · Boiler · Feet · Scientific American · Water · Sulphuric acid · Sheet iron · American patent · Compressed air · Alternate board · American supplement · Horse power · Safety valves · Patent office
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