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The person who takes charge of a locomotive when it is left by the engineer after a trip.

t, to hasten the growth of fruit trees or the ripening of fruit. -- Hot well (Condensing Engines), a receptacle for the hot water drawn from the condenser by the air pump. This water is returned to the boiler, being drawn from the hot well by the feed pump. -- In hot water (Fig.), in trouble; in difficulties. [Colloq…

That branch of science, or of engineering, which treats of fluids in motion, especially of water, its action in rivers and canals, the works and machinery for conducting or raising it, its use as a prime mover, and the like.

A machine for throwing water by hand power, as a garden engine, a fire extinguisher, etc.

From without inward; toward the inside; as, the inboard stroke of a steam engine piston, the inward or return stroke.

To investigate the condition or power of, as of steam engine, by means of an indicator.

ipe, passageway, or valve, for leading or admitting a fluid to a receiver, as steam to an engine cylinder, or water to a pump. -- Magnetic induction, the action by which magnetic polarity is developed in a body susceptible to magnetic effects when brought under the influence of a magnet. -- Magneto-electric induction…

njection pipe, the pipe through which cold water is through into the condenser of a steam engine.

An inward stroke; specif., in a steam or other engine, a stroke in which the piston is moving away from the crank shaft; -- opposed to outstroke.

sed or turned about or back; incapable of being made to run backward; as, an irreversible engine.

A shaking; a tremulous motion; as, the jarring of a steamship, caused by its engines.

The cycle for the air engine proposed by Joule. In it air is taken by a pump from a cold chamber and compressed adiabatically until its pressure is eqal to that of the air in a hot chamber, into which it is then delivered, thereby displacing an equal amount of hot air into the engine cylinder. Here it expands adiabatic…

lubber on deck. -- Junk ring. (a) A packing of soft material round the piston of a steam engine. (b) A metallic ring for retaining a piston packing in place; (c) A follower. -- Junk shop, a shop where old cordage, and ship's tackle, old iron, old bottles, old paper, etc., are kept for sale. -- Junk vat (Leather Manu…

r ship. Cross keelson, a similar structure lying athwart the main keelson, to support the engines and boilers.

g of two side pieces to which are fastened cross strips or rounds forming steps. Some the engines play, And some, more bold, mount ladders to the fire. Dryden.

The amount of retardation of anything, as of a valve in a steam engine, in opening or closing.

ld, a lap joint made by welding together overlapping edges or ends. -- Inside lap (Steam Engine), lap of the valve with respect to the exhaust port. -- Outside lap, lap with respect to the admission, or steam, port.

A kind of machine blanket or wrapping material used by calico printers. Ure. Lapping engine, Lapping machine (Textile Manuf.), A machine for forming fiber info a lap. See its Lap, 9.

the, a small lathe which, from its high speed, is adapted for drilling; a hand lathe. -- Engine lathe, a turning lathe in which the cutting tool has an automatic feed; -- used chiefly for turning and boring metals, cutting screws, etc. -- Foot lathe, a lathe which is driven by a treadle worked by the foot. -- Geomet…

r for an automobile; a cam shaft operated by a two-to-one gear in an internal- combustion engine. It is generally a shaft moving more or less independently of the other parts of a machine, as, in some marine engines, a shaft, driven by a small auxiliary engine, for independently operating the valves of the main engine…