THE ADVOCATE OF INDUSTRY, AND JOURNAL OF SCIENTIFIC, MECHANICAL, AND OTHER IMPROVEMENTS. NUMBER 28. NEW-YORK, MARCH 22, 1856. VOLUME XL secure a patent for the slicer, that being of THE IMPROVED DOUBLE ACTING FORCE PUMP. recent invention. The machine is small, near- … the scroll, F, thus permitting the backward ro- neither liquid nor air can ever reach the piston tation of the crank and driving wheel, to- rod from the air chamber. parently very effective. Largeputnps of this more costly pumps having the same capacity. gether with the fork and apple. The slicing…
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