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Walter Drummond
George William Drummond
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13,721. Drummond, W., and Drummond, G. W. June 17. Steam pumps.-In direct-acting steam pumps for locomotive and other engines, the main slide H, Fig. 1, is actuated by boiler steam. The admission of steam to the pistons J<1> is controlled by the auxiliary slide L, which receives motion from the piston-rod E through the roller R and T-shaped rocking lever M.
GB190413721D1904-06-171904-06-17Improvements in Steam Pumps.
ExpiredGB190413721A
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