HIGH-PRESSURE a.
ing that of the atmosphere; -- said of steam, air, water, etc., and of steam, air, or hydraulic engines, water wheels, etc.
HYDROSTATIC; HYDROSTATICAL a.
ied, the principle involved being the same as in the hydrostatic bellows. Also called hydraulic press, and Bramah press. In the illustration, a is a pump with a small plunger b, which forces the water into the cylinder c, thus driving upward the large plunder d, which performs the reduced work, such as compressing cott…
JACK n.
heavy body through a small distance. It consists of a lever, screw, rack and pinion, hydraulic press, or any simple combination of mechanical powers, working in a compact pedestal or support and operated by a lever, crank, capstan bar, etc. The name is often given to a jackscrew, which is a kind of jack.…
ROMAN a.
-- Roman cement, a cement having the property of hardening under water; a species of hydraulic cement. -- Roman law. See under Law. -- Roman nose, a nose somewhat aquiline. -- Roman ocher, a deep, rich orange color, transparent and durable, used by artists. Ure. -- Roman order (Arch.), the composite order. See Com…
SIPHON n.
phon, a tube bent like a siphon, but having the branches turned upward; specifically (Hydraulic Engineering), a pipe for conducting water beneath a depressed place, as from one hill to another across an intervening valley, following the depression of the ground. -- Siphon barometer. See under Barometer. -- Siphon bot…
STOP n.
t, etc. -- Stop plank, one of a set of planks employed to form a sort of dam in some hydraulic works. -- Stop valve, a valve that can be closed or opened at will, as by hand, for preventing or regulating flow, as of a liquid in a pipe; -- in distinction from a valve which is operated by the action of the fluid it res…