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Spur gearing
(gcide) | Gearing \Gear"ing\, n.
1. Harness.
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2. (Mach.) The parts by which motion imparted to one portion
of an engine or machine is transmitted to another,
considered collectively; as, the valve gearing of a
locomotive engine; belt gearing; esp., a train of wheels
for transmitting and varying motion in machinery.
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Frictional gearing. See under Frictional.
Gearing chain, an endless chain transmitting motion from
one sprocket wheel to another. See Illust. of {Chain
wheel}.
Spur gearing, gearing in which the teeth or cogs are ranged
round either the concave or the convex surface (properly
the latter) of a cylindrical wheel; -- for transmitting
motion between parallel shafts, etc.
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Spur gearing
(gcide) | Spur \Spur\, n. [OE. spure, spore, AS. spura, spora; akin to D.
spoor, G. sporn, OHG. sporo, Icel. spori, Dan. spore, Sw.
sporre, and to AS. spor a trace, footstep, spyrian to trace,
track, examine, and E. spurn. [root]171. Cf. Sparrow,
Spere, Spoor, Spurn.]
1. An implement secured to the heel, or above the heel, of a
horseman, to urge the horse by its pressure. Modern spurs
have a small wheel, or rowel, with short points. Spurs
were the badge of knighthood.
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And on her feet a pair of spurs large. --Chaucer.
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2. That which goads to action; an incitement.
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Fame is the spur that the clear spirit doth raise
(That last infirmity of noble mind)
To scorn delights and live laborious days. --Milton.
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3. Something that projects; a snag.
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4. One of the large or principal roots of a tree. --Shak.
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5. (Zool.) Any stiff, sharp spine, as on the wings and legs
of certain birds, on the legs of insects, etc.;
especially, the spine on a cock's leg.
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6. A mountain that shoots from any other mountain, or range
of mountains, and extends to some distance in a lateral
direction, or at right angles.
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7. A spiked iron worn by seamen upon the bottom of the boot,
to enable them to stand upon the carcass of a whale, to
strip off the blubber.
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8. (Carp.) A brace strengthening a post and some connected
part, as a rafter or crossbeam; a strut.
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9. (Arch.)
(a) The short wooden buttress of a post.
(b) A projection from the round base of a column,
occupying the angle of a square plinth upon which the
base rests, or bringing the bottom bed of the base to
a nearly square form. It is generally carved in
leafage.
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10. (Bot.)
(a) Any projecting appendage of a flower looking like a
spur. --Gray.
(b) Ergotized rye or other grain. [R.]
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11. (Fort.) A wall that crosses a part of a rampart and joins
to an inner wall.
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12. (Shipbuilding)
(a) A piece of timber fixed on the bilge ways before
launching, having the upper ends bolted to the
vessel's side.
(b) A curved piece of timber serving as a half beam to
support the deck where a whole beam can not be
placed.
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13. (Mining) A branch of a vein.
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14. The track of an animal, as an otter; a spoor.
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Spur fowl (Zool.), any one of several species of Asiatic
gallinaceous birds of the genus Galloperdix, allied to
the jungle fowl. The males have two or more spurs on each
leg.
Spur gear (Mach.), a cogwheel having teeth which project
radially and stand parallel to the axis; a spur wheel.
Spur gearing, gearing in which spur gears are used. See
under Gearing.
Spur pepper. (Bot.) See the Note under Capsicum.
Spur wheel. Same as Spur gear, above.
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