hree inches to thirty-four inches diameter, and Messrs. Benjamin A. Dobson and James Macqueen, of corners and edges, and are therefore unsuitable for use as pump cylinders from two inches to twenty inches diameter. Bolton, England, have patented an improvement in spin- first quality front or face… … slightest variation in the length of the stroke. door process of drying, or evaporation, is one DEAN BROTHERS’ STEAM PUMP. The crank motion approaches very near to of the most favorable processes for the hand the theoretically correct motion that should brick maker, but it requires the continuous…
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