| slovo | definícia |
wheels
(mass) | wheels
- kolesá |
wheels
(encz) | wheels,kola n: pl. Zdeněk Brož |
| | podobné slovo | definícia |
set of wheels
(encz) | set of wheels, |
spin your wheels
(encz) | spin your wheels, |
the wheels fall off
(encz) | the wheels fall off, |
Anti-friction wheels
(gcide) | Friction \Fric"tion\, n. [L. frictio, fr. fricare, frictum,to
rub: cf. F. friction. See Fray to rub, arid cf.
Dentifrice.]
1. The act of rubbing the surface of one body against that of
another; attrition; in hygiene, the act of rubbing the
body with the hand, with flannel, or with a brush etc., to
excite the skin to healthy action.
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2. (Mech.) The resistance which a body meets with from the
surface on which it moves. It may be resistance to sliding
motion, or to rolling motion.
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3. A clashing between two persons or parties in opinions or
work; a disagreement tending to prevent or retard
progress.
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Angle of friction (Mech.), the angle which a plane onwhich
a body is lying makes with a horizontal plane,when the
hody is just ready to slide dewn the plane.
Note: This angle varies for different bodies, and for planes
of different materials.
Anti-friction wheels (Mach.), wheels turning freely on
small pivots, and sustaining, at the angle formed by their
circumferences, the pivot or journal of a revolving shaft,
to relieve it of friction; -- called also {friction
wheels}.
Friction balls, or
Friction rollers, balls or rollers placed so as to receive
the pressure or weight of bodies in motion, and relieve
friction, as in the hub of a bicycle wheel.
Friction brake (Mach.), a form of dynamometer for measuring
the power a motor exerts. A clamp around the revolving
shaft or fly wheel of the motor resists the motion by its
friction, the work thus absorbed being ascertained by
observing the force required to keep the clamp from
revolving with the shaft; a Prony brake.
Friction chocks, brakes attached to the common standing
garrison carriages of guns, so as to raise the trucks or
wheels off the platform when the gun begins to recoil, and
prevent its running back. --Earrow.
Friction clutch, Friction coupling, an engaging and
disengaging gear for revolving shafts, pulleys, etc.,
acting by friction; esp.:
(a) 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 the friction of the conical surfaces gives.
(b) A toothed clutch, one member of which, instead of
being made fast on its shaft, is held by friction and
can turn, by slipping, under excessive strain or in
starting.
Friction drop hammer, one in which the hammer is raised for
striking by the friction of revolving rollers which nip
the hammer rod.
Friction gear. See Frictional gearing, under
Frictional.
Friction machine, an electrical machine, generating
electricity by friction.
Friction meter, an instrument for measuring friction, as in
testing lubricants.
Friction powder, Friction composition, a composition of
chlorate of potassium, antimony, sulphide, etc, which
readily ignites by friction.
Friction primer, Friction tube, a tube used for firing
cannon by means of the friction of a roughened wire in the
friction powder or composition with which the tube is
filled.
Friction wheel (Mach.), one of the wheels in frictional
gearing. See under Frictional.
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friction wheels
(gcide) | Friction \Fric"tion\, n. [L. frictio, fr. fricare, frictum,to
rub: cf. F. friction. See Fray to rub, arid cf.
Dentifrice.]
1. The act of rubbing the surface of one body against that of
another; attrition; in hygiene, the act of rubbing the
body with the hand, with flannel, or with a brush etc., to
excite the skin to healthy action.
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2. (Mech.) The resistance which a body meets with from the
surface on which it moves. It may be resistance to sliding
motion, or to rolling motion.
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3. A clashing between two persons or parties in opinions or
work; a disagreement tending to prevent or retard
progress.
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Angle of friction (Mech.), the angle which a plane onwhich
a body is lying makes with a horizontal plane,when the
hody is just ready to slide dewn the plane.
Note: This angle varies for different bodies, and for planes
of different materials.
Anti-friction wheels (Mach.), wheels turning freely on
small pivots, and sustaining, at the angle formed by their
circumferences, the pivot or journal of a revolving shaft,
to relieve it of friction; -- called also {friction
wheels}.
Friction balls, or
Friction rollers, balls or rollers placed so as to receive
the pressure or weight of bodies in motion, and relieve
friction, as in the hub of a bicycle wheel.
Friction brake (Mach.), a form of dynamometer for measuring
the power a motor exerts. A clamp around the revolving
shaft or fly wheel of the motor resists the motion by its
friction, the work thus absorbed being ascertained by
observing the force required to keep the clamp from
revolving with the shaft; a Prony brake.
Friction chocks, brakes attached to the common standing
garrison carriages of guns, so as to raise the trucks or
wheels off the platform when the gun begins to recoil, and
prevent its running back. --Earrow.
Friction clutch, Friction coupling, an engaging and
disengaging gear for revolving shafts, pulleys, etc.,
acting by friction; esp.:
(a) 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 the friction of the conical surfaces gives.
(b) A toothed clutch, one member of which, instead of
being made fast on its shaft, is held by friction and
can turn, by slipping, under excessive strain or in
starting.
Friction drop hammer, one in which the hammer is raised for
striking by the friction of revolving rollers which nip
the hammer rod.
Friction gear. See Frictional gearing, under
Frictional.
Friction machine, an electrical machine, generating
electricity by friction.
Friction meter, an instrument for measuring friction, as in
testing lubricants.
Friction powder, Friction composition, a composition of
chlorate of potassium, antimony, sulphide, etc, which
readily ignites by friction.
Friction primer, Friction tube, a tube used for firing
cannon by means of the friction of a roughened wire in the
friction powder or composition with which the tube is
filled.
Friction wheel (Mach.), one of the wheels in frictional
gearing. See under Frictional.
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meals on wheels
(gcide) | meals on wheels \meals on wheels\, meals-on-wheels
\meals-on-wheels\n.
A program that delivers hot meals to persons, such as the
elderly or disabled, who are confined to their homes and
unable to cook for themselves; also, the meals thus
delivered. Such programs are usually conducted by
governmental or charitable organizations.
[PJC] |
meals-on-wheels
(gcide) | meals on wheels \meals on wheels\, meals-on-wheels
\meals-on-wheels\n.
A program that delivers hot meals to persons, such as the
elderly or disabled, who are confined to their homes and
unable to cook for themselves; also, the meals thus
delivered. Such programs are usually conducted by
governmental or charitable organizations.
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Miter wheels
(gcide) | Miter \Mi"ter\, Mitre \Mi"tre\, n. [F. mitre, fr. L. mitra
headband, turban, Gr. ?.]
1. A covering for the head, worn on solemn occasions by
bishops and other church dignitaries. It has been made in
many forms, the present form being a lofty cap with two
points or peaks. --Fairholt.
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2. The surface forming the beveled end or edge of a piece
where a miter joint is made; also, a joint formed or a
junction effected by two beveled ends or edges; a miter
joint.
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3. (Numis.) A sort of base money or coin.
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Miter box (Carp. & Print.), an apparatus for guiding a
handsaw at the proper angle in making a miter joint; esp.,
a wooden or metal trough with vertical kerfs in its
upright sides, for guides.
Miter dovetail (Carp.), a kind of dovetail for a miter
joint in which there is only one joint line visible, and
that at the angle.
Miter gauge (Carp.), a gauge for determining the angle of a
miter.
Miter joint, a joint formed by pieces matched and united
upon a line bisecting the angle of junction, as by the
beveled ends of two pieces of molding or brass rule, etc.
The term is used especially when the pieces form a right
angle, such as the edges of a window frame, and the edge
of each piece at the point of junction is cut at a 45[deg]
angle to its long direction. See Miter, 2.
Miter shell (Zool.), any one of numerous species of marine
univalve shells of the genus Mitra.
Miter square (Carp.), a bevel with an immovable arm at an
angle of 45[deg], for striking lines on stuff to be
mitered; also, a square with an arm adjustable to any
angle.
Miter wheels, a pair of bevel gears, of equal diameter,
adapted for working together, usually with their axes at
right angles.
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Sun and planet wheels
(gcide) | Sun \Sun\, n. [OE. sunne, sonne, AS. sunne; akin to OFries.
sunne, D. zon, OS. & OHG. sunna, G. sonne, Icel. sunna, Goth.
sunna; perh. fr. same root as L. sol. [root]297. Cf. Solar,
South.]
1. The luminous orb, the light of which constitutes day, and
its absence night; the central body round which the earth
and planets revolve, by which they are held in their
orbits, and from which they receive light and heat. Its
mean distance from the earth is about 92,500,000 miles,
and its diameter about 860,000.
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Note: Its mean apparent diameter as seen from the earth is
32' 4[sec], and it revolves on its own axis once in
251/3 days. Its mean density is about one fourth of
that of the earth, or 1.41, that of water being unity.
Its luminous surface is called the photosphere, above
which is an envelope consisting partly of hydrogen,
called the chromosphere, which can be seen only through
the spectroscope, or at the time of a total solar
eclipse. Above the chromosphere, and sometimes
extending out millions of miles, are luminous rays or
streams of light which are visible only at the time of
a total eclipse, forming the solar corona.
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2. Any heavenly body which forms the center of a system of
orbs.
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3. The direct light or warmth of the sun; sunshine.
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Lambs that did frisk in the sun. --Shak.
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4. That which resembles the sun, as in splendor or
importance; any source of light, warmth, or animation.
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For the Lord God is a sun and shield. --Ps. lxxiv.
11.
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I will never consent to put out the sun of
sovereignity to posterity. --Eikon
Basilike.
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Sun and planet wheels (Mach.), an ingenious contrivance for
converting reciprocating motion, as that of the working
beam of a steam engine, into rotatory motion. It consists
of a toothed wheel (called the sun wheel), firmly secured
to the shaft it is desired to drive, and another wheel
(called the planet wheel) secured to the end of a
connecting rod. By the motion of the connecting rod, the
planet wheel is made to circulate round the central wheel
on the shaft, communicating to this latter a velocity of
revolution the double of its own. --G. Francis.
Sun angel (Zool.), a South American humming bird of the
genus Heliangelos, noted for its beautiful colors and
the brilliant luster of the feathers of its throat.
Sun animalcute. (Zool.) See Heliozoa.
Sun bath (Med.), exposure of a patient to the sun's rays;
insolation.
Sun bear (Zool.), a species of bear (Helarctos Malayanus)
native of Southern Asia and Borneo. It has a small head
and short neck, and fine short glossy fur, mostly black,
but brownish on the nose. It is easily tamed. Called also
bruang, and Malayan bear.
Sun beetle (Zool.), any small lustrous beetle of the genus
Amara.
Sun bittern (Zool.), a singular South American bird
(Eurypyga helias), in some respects related both to the
rails and herons. It is beautifully variegated with white,
brown, and black. Called also sunbird, and {tiger
bittern}.
Sun fever (Med.), the condition of fever produced by sun
stroke.
Sun gem (Zool.), a Brazilian humming bird ({Heliactin
cornutus}). Its head is ornamented by two tufts of bright
colored feathers, fiery crimson at the base and greenish
yellow at the tip. Called also Horned hummer.
Sun grebe (Zool.), the finfoot.
Sun picture, a picture taken by the agency of the sun's
rays; a photograph.
Sun spots (Astron.), dark spots that appear on the sun's
disk, consisting commonly of a black central portion with
a surrounding border of lighter shade, and usually seen
only by the telescope, but sometimes by the naked eye.
They are very changeable in their figure and dimensions,
and vary in size from mere apparent points to spaces of
50,000 miles in diameter. The term sun spots is often used
to include bright spaces (called faculae) as well as dark
spaces (called maculae). Called also solar spots. See
Illustration in Appendix.
Sun star (Zool.), any one of several species of starfishes
belonging to Solaster, Crossaster, and allied genera,
having numerous rays.
Sun trout (Zool.), the squeteague.
Sun wheel. (Mach.) See Sun and planet wheels, above.
Under the sun, in the world; on earth. "There is no new
thing under the sun." --Eccl. i. 9.
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Note: Sun is often used in the formation of compound
adjectives of obvious meaning; as, sun-bright,
sun-dried, sun-gilt, sunlike, sun-lit, sun-scorched,
and the like.
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To cramp the wheels of wagon
(gcide) | Cramp \Cramp\, v. t. [imp. & p. p. Cramped (kr[a^]mt; 215); p.
pr. & vb. n. Cramping.]
1. To compress; to restrain from free action; to confine and
contract; to hinder.
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The mind my be as much cramped by too much knowledge
as by ignorance. --Layard.
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2. To fasten or hold with, or as with, a cramp.
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3. Hence, to bind together; to unite.
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The . . . fabric of universal justic is well cramped
and bolted together in all its parts. --Burke.
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4. To form on a cramp; as, to cramp boot legs.
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5. To afflict with cramp.
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When the gout cramps my joints. --Ford.
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To cramp the wheels of wagon, to turn the front wheels out
of line with the hind wheels, so that one of them shall be
against the body of the wagon.
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Training wheels
(gcide) | Training wheels \Train"ing wheels\
a pair of small wheels attached to the rear of a bicycle to
keep the bicycle upright; -- used to assist those, especially
small children, learning how to ride a bicycle.
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Wheels within wheels
(gcide) | Wheel \Wheel\ (hw[=e]l), n. [OE. wheel, hweol, AS. hwe['o]l,
hweogul, hweowol; akin to D. wiel, Icel. hv[=e]l, Gr.
ky`klos, Skr. cakra; cf. Icel. hj[=o]l, Dan. hiul, Sw. hjul.
[root]218. Cf. Cycle, Cyclopedia.]
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1. A circular frame turning about an axis; a rotating disk,
whether solid, or a frame composed of an outer rim, spokes
or radii, and a central hub or nave, in which is inserted
the axle, -- used for supporting and conveying vehicles,
in machinery, and for various purposes; as, the wheel of a
wagon, of a locomotive, of a mill, of a watch, etc.
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The gasping charioteer beneath the wheel
Of his own car. --Dryden.
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2. Any instrument having the form of, or chiefly consisting
of, a wheel. Specifically:
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(a) A spinning wheel. See under Spinning.
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(b) An instrument of torture formerly used.
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His examination is like that which is made by
the rack and wheel. --Addison.
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Note: This mode of torture is said to have been first
employed in Germany, in the fourteenth century. The
criminal was laid on a cart wheel with his legs and
arms extended, and his limbs in that posture were
fractured with an iron bar. In France, where its use
was restricted to the most atrocious crimes, the
criminal was first laid on a frame of wood in the form
of a St. Andrew's cross, with grooves cut transversely
in it above and below the knees and elbows, and the
executioner struck eight blows with an iron bar, so as
to break the limbs in those places, sometimes finishing
by two or three blows on the chest or stomach, which
usually put an end to the life of the criminal, and
were hence called coups-de-grace -- blows of mercy. The
criminal was then unbound, and laid on a small wheel,
with his face upward, and his arms and legs doubled
under him, there to expire, if he had survived the
previous treatment. --Brande.
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(c) (Naut.) A circular frame having handles on the
periphery, and an axle which is so connected with the
tiller as to form a means of controlling the rudder
for the purpose of steering.
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(d) (Pottery) A potter's wheel. See under Potter.
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Then I went down to the potter's house, and,
behold, he wrought a work on the wheels. --Jer.
xviii. 3.
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Turn, turn, my wheel! This earthen jar
A touch can make, a touch can mar. --Longfellow.
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(e) (Pyrotechny) A firework which, while burning, is
caused to revolve on an axis by the reaction of the
escaping gases.
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(f) (Poetry) The burden or refrain of a song.
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Note: "This meaning has a low degree of authority, but is
supposed from the context in the few cases where the
word is found." --Nares.
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You must sing a-down a-down,
An you call him a-down-a.
O, how the wheel becomes it! --Shak.
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3. A bicycle or a tricycle; a velocipede.
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4. A rolling or revolving body; anything of a circular form;
a disk; an orb. --Milton.
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5. A turn revolution; rotation; compass.
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According to the common vicissitude and wheel of
things, the proud and the insolent, after long
trampling upon others, come at length to be trampled
upon themselves. --South.
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[He] throws his steep flight in many an aery wheel.
--Milton.
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A wheel within a wheel, or Wheels within wheels, a
complication of circumstances, motives, etc.
Balance wheel. See in the Vocab.
Bevel wheel, Brake wheel, Cam wheel, Fifth wheel,
Overshot wheel, Spinning wheel, etc. See under Bevel,
Brake, etc.
Core wheel. (Mach.)
(a) A mortise gear.
(b) A wheel having a rim perforated to receive wooden
cogs; the skeleton of a mortise gear.
Measuring wheel, an odometer, or perambulator.
Wheel and axle (Mech.), one of the elementary machines or
mechanical powers, consisting of a wheel fixed to an axle,
and used for raising great weights, by applying the power
to the circumference of the wheel, and attaching the
weight, by a rope or chain, to that of the axle. Called
also axis in peritrochio, and perpetual lever, -- the
principle of equilibrium involved being the same as in the
lever, while its action is continuous. See {Mechanical
powers}, under Mechanical.
Wheel animal, or Wheel animalcule (Zool.), any one of
numerous species of rotifers having a ciliated disk at the
anterior end.
Wheel barometer. (Physics) See under Barometer.
Wheel boat, a boat with wheels, to be used either on water
or upon inclined planes or railways.
Wheel bug (Zool.), a large North American hemipterous
insect (Prionidus cristatus) which sucks the blood of
other insects. So named from the curious shape of the
prothorax.
Wheel carriage, a carriage moving on wheels.
Wheel chains, or Wheel ropes (Naut.), the chains or ropes
connecting the wheel and rudder.
Wheel cutter, a machine for shaping the cogs of gear
wheels; a gear cutter.
Wheel horse, one of the horses nearest to the wheels, as
opposed to a leader, or forward horse; -- called also
wheeler.
Wheel lathe, a lathe for turning railway-car wheels.
Wheel lock.
(a) A letter lock. See under Letter.
(b) A kind of gunlock in which sparks were struck from a
flint, or piece of iron pyrites, by a revolving wheel.
(c) A kind of brake a carriage.
Wheel ore (Min.), a variety of bournonite so named from the
shape of its twin crystals. See Bournonite.
Wheel pit (Steam Engine), a pit in the ground, in which the
lower part of the fly wheel runs.
Wheel plow, or Wheel plough, a plow having one or two
wheels attached, to render it more steady, and to regulate
the depth of the furrow.
Wheel press, a press by which railway-car wheels are forced
on, or off, their axles.
Wheel race, the place in which a water wheel is set.
Wheel rope (Naut.), a tiller rope. See under Tiller.
Wheel stitch (Needlework), a stitch resembling a spider's
web, worked into the material, and not over an open space.
--Caulfeild & S. (Dict. of Needlework).
Wheel tree (Bot.), a tree (Aspidosperma excelsum) of
Guiana, which has a trunk so curiously fluted that a
transverse section resembles the hub and spokes of a
coarsely made wheel. See Paddlewood.
Wheel urchin (Zool.), any sea urchin of the genus Rotula
having a round, flat shell.
Wheel window (Arch.), a circular window having radiating
mullions arranged like the spokes of a wheel. Cf. {Rose
window}, under Rose.
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Wheel-shaped
(gcide) | Wheel-shaped \Wheel"-shaped`\, a.
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1. Shaped like a wheel.
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2. (Bot.) Expanding into a flat, circular border at top, with
scarcely any tube; as, a wheel-shaped corolla.
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Wheelswarf
(gcide) | Wheelswarf \Wheel"swarf`\, n.
See Swarf.
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