lve, a metal ball attached to the filling fun- is allowed a direct unobstructed passage, but when the re- be considered as the very best defence yet brought out against nel by a chain. This prevents the escape of steam until a verse movement of the water begins the valve is quickly torpedo boats.… … Patented July 31, 1877. For further in- ship while at anchor. BALL CHECK VALVE FOR SEWERS. formation address Hay & Bassett, 182 Fulton <0 street, New York city, P. O. Box 48265. Patented through the Scientific American Patent Agency, IMPROVED NEEDLE CLAMP FOR SEWING MACHINES, May 22, 1876, June 27,…
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