Found 2 items, similar to air spring.
English → English
Definition: air spring
n : a mechanical device using confined air to absorb the shock
of motion [syn: air cushion
English → English
Definition: Air spring
, n. [AS. spring a fountain, a leap. See
, v. i.]
1. A leap; a bound; a jump.
The prisoner, with a spring, from prison broke.
2. A flying back; the resilience of a body recovering its
former state by its elasticity; as, the spring of a bow.
3. Elastic power or force.
Heavens! what a spring was in his arm! --Dryden.
4. An elastic body of any kind, as steel, India rubber, tough
wood, or compressed air, used for various mechanical
purposes, as receiving and imparting power, diminishing
concussion, regulating motion, measuring weight or other
Note: The principal varieties of springs used in mechanisms
are the spiral spring
(Fig. a), the coil spring
(Fig. b), the elliptic spring
(Fig. c), the
(Fig. d), the volute spring
the India-rubber spring
, the atmospheric spring
5. Any source of supply; especially, the source from which a
stream proceeds; an issue of water from the earth; a
natural fountain. “All my springs are in thee.”
lxxxvii. 7. “A secret spring of spiritual joy.”
--Bentley. “The sacred spring whence right and honor
--Sir J. Davies.
6. Any active power; that by which action, or motion, is
produced or propagated; cause; origin; motive.
Our author shuns by vulgar springs to move
The hero's glory, or the virgin's love. --Pope.
7. That which springs, or is originated, from a source; as:
(a) A race; lineage. [Obs.] --Chapman.
(b) A youth; a springal. [Obs.] --Spenser.
(c) A shoot; a plant; a young tree; also, a grove of
trees; woodland. [Obs.] --Spenser. Milton.
8. That which causes one to spring; specifically, a lively
tune. [Obs.] --Beau. & Fl.
9. The season of the year when plants begin to vegetate and
grow; the vernal season, usually comprehending the months
of March, April, and May, in the middle latitudes north of
the equator. “The green lap of the new-come spring.”
Note: Spring of the astronomical year begins with the vernal
equinox, about March 21st, and ends with the summer
solstice, about June 21st.
10. The time of growth and progress; early portion; first
stage; as, the spring of life. “The spring of the day.”
--1 Sam. ix. 26.
O how this spring of love resembleth
The uncertain glory of an April day. --Shak.
(a) A crack or fissure in a mast or yard, running
obliquely or transversely.
(b) A line led from a vessel's quarter to her cable so
that by tightening or slacking it she can be made to
lie in any desired position; a line led diagonally
from the bow or stern of a vessel to some point upon
the wharf to which she is moored.
, Boiling spring
, etc. See under Air
(Bookbinding), a back with a curved piece of
thin sheet iron or of stiff pasteboard fastened to the
inside, the effect of which is to make the leaves of a
book thus bound (as a ledger or other account or blank
book) spring up and lie flat.
, a contrivance for measuring weight or force
by the elasticity of a spiral spring of steel.
, a beam that supports the side of a paddle box.
See Paddle beam
, under Paddle
(a) (Bot.) Any plant of the genus Claytonia
herbs with somewhat fleshy leaves and pretty
blossoms, appearing in springtime.
(b) (Zo["o]l.) A small, elegant American butterfly
) which appears in spring. The hind
wings of the male are brown, bordered with deep blue;
those of the female are mostly blue.
, a mattress, under bed, or bed bottom, in which
springs, as of metal, are employed to give the required
(Zo["o]l.), a snapping beetle; an elater.
, the box or barrel in a watch, or other piece of
mechanism, in which the spring is contained.
(Zo["o]l.), a caddice fly; -- so called because
it appears in the spring.
(Bot.), vernal grass. See under Vernal
, a firearm discharged by a spring, when this is
trodden upon or is otherwise moved.
(Locomotive Engines), one of the hooks which
fix the driving-wheel spring to the frame.
, a latch that fastens with a spring.
, a lock that fastens with a spring.
, a spring bed.
Spring of an arch
(Arch.) See Springing line of an arch
Spring of pork
, the lower part of a fore quarter, which is
divided from the neck, and has the leg and foot without
the shoulder. [Obs.] --Nares.
Sir, pray hand the spring of pork to me. --Gayton.
(Locomotive Engines), an iron rod fitted between
the springs and the axle boxes, to sustain and regulate
the pressure on the axles.
, a kind of rye sown in the spring; -- in
distinction from winter rye, sown in autumn.
(Naut.), a preventer stay, to assist the
regular one. --R. H. Dana, Jr.
, the tide which happens at, or soon after, the
new and the full moon, and which rises higher than common
tides. See Tide
, a wagon in which springs are interposed
between the body and the axles to form elastic supports.
, any kind of wheat sown in the spring; -- in
distinction from winter wheat, which is sown in autumn.
([^a]r), n. [OE. air, eir, F. air, L. a["e]r, fr. Gr.
'ah`r, air, mist, for 'a[digamma]hr, fr. root 'a[digamma] to
blow, breathe, probably akin to E. wind. In sense 10 the
French has taking a meaning fr. It. aria atmosphere, air, fr.
the same Latin word; and in senses 11, 12, 13 the French
meaning is either fr. L. aria, or due to confusion with F.
aire, in an older sense of origin, descent. Cf. A["e]ry
1. The fluid which we breathe, and which surrounds the earth;
the atmosphere. It is invisible, inodorous, insipid,
transparent, compressible, elastic, and ponderable.
Note: By the ancient philosophers, air was regarded as an
element; but modern science has shown that it is
essentially a mixture of oxygen and nitrogen, with a
small amount of carbon dioxide, the average proportions
being, by volume: oxygen, 20.96 per cent.; nitrogen,
79.00 per cent.; carbon dioxide, 0.04 per cent. These
proportions are subject to a very slight variability.
Air also always contains some vapor of water.
2. Symbolically: Something unsubstantial, light, or volatile.
“Charm ache with air.”
He was still all air and fire. [Air and fire being
the finer and quicker elements as opposed to earth and
3. A particular state of the atmosphere, as respects heat,
cold, moisture, etc., or as affecting the sensations; as,
a smoky air, a damp air, the morning air, etc.
4. Any a["e]riform body; a gas; as, oxygen was formerly
called vital air. [Obs.]
5. Air in motion; a light breeze; a gentle wind.
Let vernal airs through trembling osiers play.
6. Odoriferous or contaminated air.
7. That which surrounds and influences.
The keen, the wholesome air of poverty.
8. Utterance abroad; publicity; vent.
You gave it air before me. --Dryden.
9. Intelligence; information. [Obs.] --Bacon.
(a) A musical idea, or motive, rhythmically developed in
consecutive single tones, so as to form a symmetrical
and balanced whole, which may be sung by a single
voice to the stanzas of a hymn or song, or even to
plain prose, or played upon an instrument; a melody;
a tune; an aria.
(b) In harmonized chorals, psalmody, part songs, etc.,
the part which bears the tune or melody -- in modern
harmony usually the upper part -- is sometimes called
11. The peculiar look, appearance, and bearing of a person;
mien; demeanor; as, the air of a youth; a heavy air; a
lofty air. “His very air.”
12. Peculiar appearance; apparent character; semblance;
It was communicated with the air of a secret.
12. pl. An artificial or affected manner; show of pride or
vanity; haughtiness; as, it is said of a person, he puts
on airs. --Thackeray.
(a) The representation or reproduction of the effect of
the atmospheric medium through which every object in
nature is viewed. --New Am. Cyc.
(b) Carriage; attitude; action; movement; as, the head of
that portrait has a good air. --Fairholt.
15. (Man.) The artificial motion or carriage of a horse.
Note: Air is much used adjectively or as the first part of a
compound term. In most cases it might be written
indifferently, as a separate limiting word, or as the
first element of the compound term, with or without the
hyphen; as, air bladder, air-bladder, or airbladder;
air cell, air-cell, or aircell; air-pump, or airpump.
. See Balloon
(a) An apparatus for the application of air to the body.
(b) An arrangement for drying substances in air of any
. See Castle in the air
, under Castle
, a machine for compressing air to be used as
a motive power.
, a passage for air in a mine.
, an air-tight cushion which can be inflated;
also, a device for arresting motion without shock by
, a contrivance for producing a jet of water by
the force of compressed air.
, a furnace which depends on a natural draft and
not on blast.
, a straight line; a bee line. Hence
, adj.; as, air-line road.
(Hydr. Engin.), an intermediate chamber between
the outer air and the compressed-air chamber of a
pneumatic caisson. --Knight.
(Nav.), a scuttle or porthole in a ship to admit
, a spring in which the elasticity of air is
, a form of thermometer in which the
contraction and expansion of air is made to measure
changes of temperature.
, a contrivance for shutting off foul air or gas
from drains, sewers, etc.; a stench trap.
, a pipe or shaft for conducting foul or heated
air from a room.
, a valve to regulate the admission or egress of
air; esp. a valve which opens inwardly in a steam boiler
and allows air to enter.
, a passage for a current of air; as the air way of
an air pump; an air way in a mine.
In the air
(a) Prevalent without traceable origin or authority, as
(b) Not in a fixed or stable position; unsettled.
(c) (Mil.) Unsupported and liable to be turned or taken
in flank; as, the army had its wing in the air.
on the air
, currently transmitting; live; -- used of radio
and television broadcasts, to indicate that the images and
sounds being picked up by cameras and microphones are
being broadcast at the present moment.
Note: In call-in programs where individuals outside a radio
or television studio have telephoned into the station,
when their voice is being directly broadcast, the host
of the program commonly states “You're on the air.”
as a warning that the conversation is not private.
To take air
, to be divulged; to be made public.
To take the air
, to go abroad; to walk or ride out.