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A partition in any compartment, for various purposes. Diaphragm pump, one in which a flexible diaphragm takes the place of a piston.

on of a beam or lever; -- also called direct-action steam engine. -- Direct-acting steam pump, one in which the steam piston rod is directly connected with the pump rod; -- also called direct-action steam pump.

ght of steam, water, etc., displaced, in a given time, by the piston of a steam engine or pump.

k under water, respiration being sustained by the compressed air at the top, by fresh air pumped in through a tube from above. -- Diving dress. See Submarine armor, under Submarine. -- Diving stone, a kind of jasper.

al or accused person stands. Balance dock, a kind of floating dock which is kept level by pumping water out of, or letting it into, the compartments of side chambers. -- Dry dock, a dock from which the water may be shut or pumped out, especially, one in the form of a chamber having walls and floor, often of masonry an…

fellow; an ass. Donkey engine, a small auxiliary engine not used for propelling, but for pumping water into the boilers, raising heavy weights, and like purposes. -- Donkey pump, a steam pump for feeding boilers, extinguishing fire, etc.; -- usually an auxiliary. -- Donkey's eye (Bot.), the large round seed of the M…

irections or with both motions; producing a twofold result; as, a double-acting engine or pump.

, by means of two cutting tools, on opposite sides of the piece operated upon. -- Duplex pumping engine, a steam pump in which two steam cylinders are placed side by side, one operating the valves of the other. -- Duplex querela Etym: [L., double complaint] (Eccl. Law), a complaint in the nature of an appeal from the…

The efficiency of an engine, especially a steam pumping engine, as measured by work done by a certain quantity of fuel; usually, the number of pounds of water lifted one foot by one bushel of coal (94 lbs. old standard), or by 1 cwt. (112 lbs., England, or 100 lbs., United States).

Ejector condenser (Steam Engine), a condenser in which the vacuum is maintained by a jet pump.

rument for measuring the degree of rarefaction of air contained in the receiver of an air pump. [Spelt also elaterometer.]

Something inserted, as a wedge; the piston or sucker of a pump or syringe.

and remove, as earth. The material excavated was usually sand. E. L. Corthell. Excavating pump, a kind of dredging apparatus for excavating under water, in which silt and loose material mixed with water are drawn up by a pump. Knight.

The valve of a pump box.

Feed pipe, a pipe for supplying the boiler of a steam engine, etc., with water. -- Feed pump, a force pump for supplying water to a steam boiler, etc. -- Feed regulator, a device for graduating the operation of a feeder. Knight. -- Feed screw, in lathes, a long screw employed to impart a regular motion to a tool re…

(Naut.), to make a sircuit; to take a circuitious route going to a place. -- To fetch a pump, to make it draw water by pouring water into the top and working the handle. -- To fetch headway or sternway (Naut.), to move ahead or astern. -- To fetch out, to develop. "The skill of the polisher fetches out the colors […

relsome person who seeks affrays; a hotspur. [Colloq.] -- Fire engine, a portable forcing pump, usually on wheels, for throwing water to extinguish fire. -- Fire escape, a contrivance for facilitating escape from burning buildings. -- Fire gilding (Fine Arts), a mode of gilding with an amalgam of gold and quicksilver…

t which is fixed or attached to something as a permanent appendage; as, the fixtures of a pump; the fixtures of a farm or of a dwelling, that is, the articles which a tenant may not take away.

-- Flat rods (Mining), horizontal or inclined connecting rods, for transmitting motion to pump rods at a distance. Raymond. -- Flat rope, a rope made by plaiting instead of twisting; gasket; sennit.

he lower end of a pipe; esp., such a valve in a steam-engine condenser opening to the air pump.