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A cogwheel with a small number of teeth, or leaves, adapted to engage with a larger wheel, or rack (see Rack); esp., such a wheel having its leaves formed of the substance of the arbor or spindle which is its axis. Lantern pinion. See under Lantern. -- Pinion wire, wire fluted longitudinally, for making the pinions of…

ibed by the number expressing the quotient obtained by dividing the number of teeth in a wheel by the diameter of its pitch circle in inches; as, 4 pitch, 8 pitch, etc. -- Pitch chain, a chain, as one made of metallic plates, adapted for working with a sprocket wheel. -- Pitch line, or Pitch circle (Gearing), an idea…

A fixed pin or short axis, on the end of which a wheel or other body turns.

anet reigns. Shak. Planet gear. (Mach.) See Epicyclic train, under Epicyclic. -- Planet wheel, a gear wheel which revolves around the wheel with which it meshes, in an epicyclic train.

Having the foot so formed that the heel touches the ground when the leg is upright.

Motion; movement, regular or irregular; as, the play of a wheel or piston; hence, also, room for motion; free and easy action. "To give them play, front and rear." Milton. The joints are let exactly into one another, that they have no play between them. Moxon.

A boiler in which clay is beaten by a wheel to a creamy consistence. Knight.

a) A carriage pole, a wooden bar extending from the front axle of a carriage between the wheel horses, by which the carriage is guided and held back. (b) A flag pole, a pole on which a flag is supported. (c) A Maypole. See Maypole. (d) A barber's pole, a pole painted in stripes, used as a sign by barbers and hairdresse…

e slate. -- Polishing snake, a tool used in cleaning lithographic stones. -- Polishing wheel, a wheel or disk coated with, or composed of, abrading material, for polishing a surface.

e track to another. [U.S.] -- Pony truck (Locomotive Engine), a truck which has only two wheels. -- Pony truss (Bridge Building), a truss which has so little height that overhead bracing can not be used.

The larboard or left side of a ship (looking from the stern toward the bow); as, a vessel heels to port. See Note under Larboard. Also used adjectively.

ers mailed by a postmaster. -- Post chaise, or Post coach, a carriage usually with four wheels, for the conveyance of travelers who travel post. Post day, a day on which the mall arrives or departs. -- Post hackney, a hired post horse. Sir H. Wotton. -- Post horn, a horn, or trumpet, carried and blown by a carrier o…

ot. Knight. -- Pot plant (Bot.), either of the trees which bear the monkey-pot. -- Pot wheel (Hydraul.), a noria. -- To go to pot, to go to destruction; to come to an end of usefulness; to become refuse. [Colloq.] Dryden. J. G. Saxe.

hose occupation is to make earthen vessels. Ps. ii. 9. The potter heard, and stopped his wheel. Longfellow.

öl.), a mantis, especially Mantis religiosa. See Mantis. -- Praying machine, or Praying wheel, a wheel on which prayers are pasted by Buddhist priests, who then put the wheel in rapid revolution. Each turn in supposed to have the efficacy of an oral repetition of all the prayers on the wheel. Sometimes it is moved by…

The act of presenting, or the state of being presented; presentation. " Upon the heels of my presentment." Shak.

One who, or that which, presses. Presser bar, or Presser wheel (Knitting machine), a bar or wheel which closes the barbs of the needles to enable the loops of the yarn to pass over them. -- Presser foot, the part of a sewing machine which rests on the cloth and presses it down upon the table of the machine.…

n as supplied by some natural source, and apply them to drive other machines; as a water wheel, a water- pressure engine, a steam engine, a hot-air engine, etc. (c) Fig.: The original or the most effective force in any undertaking or work; as, Clarkson was the prime mover in English antislavery agitation. -- Prime num…

-- Printing press, a press for printing, books, newspaper, handbills, etc. -- Printing wheel, a wheel with letters or figures on its periphery, used in machines for paging or numbering, or in ticket-printing machines, typewriters, etc.; a type wheel.

f a screw placed in the stern under water, and made to revolve by an engine; a propeller wheel.