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A disk or wheel so arranged upon a shaft that the center of the wheel and that of the shaft do not coincide. It is used for operating valves in steam engines, and for other purposes. The motion derived is precisely that of a crank having the same throw. Back eccentric, the eccentric that reverses or backs the valve gea…

ements of written language; hence, also, a simple portion of that which is complex, as a shaft, lever, wheel, or any simple part in a machine; one of the essential ingredients of any mixture; a constituent part; as, quartz, feldspar, and mica are the elements of granite. The simplicity which is so large an element in a…

A generator having its revolving part carried on the shaft of the driving engine.

A slight convex swelling of the shaft of a column.

To discharge; to shoot. [Obs.] Then he another and another [shaft] did expel. Spenser. .

loop forming part of anything, or a hole through anything, to receive a rope, hook, pin, shaft, etc.; as an eye at the end of a tie bar in a bridge truss; as an eye through a crank; an eye at the end of rope.

in; -- from its form. [Obs.] Chaucer. Fan blower, a wheel with vanes fixed on a rotating shaft inclosed in a case or chamber, to create a blast of air (fan blast) for forge purposes, or a current for draft and ventilation; a fanner. -- Fan cricket (Zoöl.), a mole cricket. -- Fan light (Arch.), a window over a door; -…

A niche in the side of an adit or shaft, for an air course. Knight.

h." Shak. Fast and loose pulleys (Mach.), two pulleys placed side by side on a revolving shaft, which is driven from another shaft by a band, and arranged to disengage and reëngage the machinery driven thereby. When the machinery is to be stopped, the band is transferred from the pulley fixed to the shaft to the pulley…

One of the fins or wings on the shaft of an arrow.

ers; -- said of an arrow, when the feathers are of a tincture different from that of the shaft.

To make, or to describe as, female or feminine. Shaftesbury.

One of the thills or shafts of a carriage. Mortimer. Fill horse, a thill horse. Shak.

t molding separating other moldings; a reglet; also, the space between two flutings in a shaft. See Illust. of Base, and Column.

A kind of arrow for the longbow; also, the sport of shooting with it. See Shaft. [Obs.] Challenged Cupid at the flight. Shak. Not a flight drawn home E'er made that haste that they have. Beau. & Fl.

parating two parts that are fitted tightly one into another, as for forcing a crank on a shaft, or for drawing off a car wheel from the axle. -- Forcing pump. See Force pump (b).

A device in which a piece on one shaft or pulley is so forcibly pressed against a piece on another shaft that the two will revolve together; as, in the illustration, the cone a on one shaft, when thrust forcibly into the corresponding hollow cone b on the other shaft, compels the shafts to rotate together, by the hold…

One of the drums of the shaft of a column.

on, or great trial; severe experience or discipline. Deut. iv. 20. Bustamente furnace, a shaft furnace for roasting quicksilver ores. -- Furnace bridge, Same as Bridge wall. See Bridge, n., 5. -- Furnace cadmiam or cadmia, the oxide of zinc which accumulates in the chimneys of furnaces smelting zinciferous ores. Raym…

The shaft of a column, or trunk of pilaster. Gwilt.