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A hole through which a man may descend or creep into a drain, sewer, steam boiler, parts of machinery, etc., for cleaning or repairing.

An instrument for measuring the tension or elastic force of gases, steam, etc., constructed usually on the principle of allowing the gas to exert its elastic force in raising a column of mercury in an open tube, or in compressing a portion of air or other gas in a closed tube with mercury or other liquid intervening, o…

oncommissioned officers, privates, and musicants of marines. -- Marine engine (Mech.), a steam engine for propelling a vessel. -- Marine glue. See under Glue. -- Marine insurance, insurance against the perils of the sea, including also risks of fire, piracy, and barratry. -- Marine interest, interest at any rate ag…

-- Mineral wool, a fibrous wool-like material, made by blowing a powerful jet of air or steam through melted slag. It is a poor conductor of heat.

An apparatus for raising a liquid by pressure of air or steam in a reservoir containing the liquid.

ve power. "Motive faculty." Bp. Wilkins. Motive power (Mach.), a natural agent, as water, steam, wind, electricity, etc., used to impart motion to machinery; a motor; a mover.

A prime mover; a machine by means of which a source of power, as steam, moving water, electricity, etc., is made available for doing mechanical work.

to change place or posture; susceptible of motion; not fixed or stationary; as, a movable steam engine.

blades for cutting standing grass, etc. It is drawn by a horse or horses, or propelled by steam.

-- Mud dauber (Zoöl.), a mud wasp. -- Mud devil (Zoöl.), the fellbender. -- Mud drum (Steam Boilers), a drum beneath a boiler, into which sediment and mud in the water can settle for removal. -- Mud eel (Zoöl.), a long, slender, aquatic amphibian (Siren lacertina), found in the Southern United States. It has persi…

Not condensing; discharging the steam from the cylinder at a pressure nearly equal to or above that of the atmosphere and not into a condenser.

A short outlet, or inlet, pipe projecting from the end or side of a hollow vessel, as a steam-engine cylinder or a steam boiler.

working of any complex machine; as, the cylinder, valves, crank, etc., are organs of the steam engine.

That oscillates; vibrating; swinging. Oscillating engine, a steam engine whose cylinder oscillates on trunnions instead of being permanently fixed in a perpendicular or other direction. Weale.

Going out; departing; as, the outgoing administration; an outgoing steamer.

To excel in speed. Outspeed the realized miracles of steam. Talfourd.

orce its outward way. Dryden. -- Out"ward*ly, adv. -- Out"ward*ness, n. Outward stroke. (Steam Engine) See under Stroke.

able material, or to fit or adjust so as to move without giving passage to air, water, or steam; as, to pack a joint; to pack the piston of a steam engine.

m (Shipbuilding), one of two large timbers supporting the spring beam and paddle box of a steam vessel. -- Paddle board. See Paddle, n., 3. -- Paddle box, the structure inclosing the upper part of the paddle wheel of a steam vessel. -- Paddle shaft, the revolving shaft which carries the paddle wheel of a steam vesse…

arts; like; similar; as, a parallel case; a parallel passage. Addison. Parallel bar. (a) (Steam Eng.) A rod in a parallel motion which is parallel with the working beam. (b) One of a pair of bars raised about five feet above the floor or ground, and parallel to each other, -- used for gymnastic exercises. -- Parallel…