Greenhill, G. (George), Sir, 1847-1927 · London and New York, Macmillan and Co. · leaf 371
ition of valves, as in fig. 8, p. 19, the cylindermay be fixed in position, and the piston with its packingmay be replaced by a plunger working through a stufiing 360 THE FORCING PUMP box, as easier of manufacture and of adjustment in work-ing, and now this machine is called a force pump (§ 12);it… … Fig. 78. Two such force pumps, placed side by side, and workedin alternate opposite directions by a lever, constitute themodern manual fire engine, which does not, however,differ essentially from the machine invented by Ctesibius,described in Heros Tlvev/ijiaTiKa, B.C. 120; the pumpsdischarge into…
Hydrostatics
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
