Found 1 items, similar to Pneumatic pile.
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Definition: Pneumatic pile
, n. [AS. p[=i]l arrow, stake, L. pilum javelin; but
cf. also L. pila pillar.]
1. A large stake, or piece of timber, pointed and driven into
the earth, as at the bottom of a river, or in a harbor
where the ground is soft, for the support of a building, a
pier, or other superstructure, or to form a cofferdam,
Note: Tubular iron piles are now much used.
2. [Cf. F. pile.] (Her.) One of the ordinaries or
subordinaries having the form of a wedge, usually placed
palewise, with the broadest end uppermost.
, a bridge of which the roadway is supported on
, a beam resting upon and connecting the heads of
, or Pile engine
, an apparatus for driving
down piles, consisting usually of a high frame, with
suitable appliances for raising to a height (by animal or
steam power, the explosion of gunpowder, etc.) a heavy
mass of iron, which falls upon the pile.
. See Lake dwelling
, under Lake
(Hydraul. Eng.), a thick plank used as a pile in
sheet piling. See Sheet piling
, under Piling
. See under Pneumatic
, one with a screw at the lower end, and sunk by
rotation aided by pressure.
, Pneumatical \Pneu*mat"ic*al\
, a. [L.
pneumaticus, Gr. ?, fr. ?, ?, wind, air, ? to blow, breathe;
cf. OHG. fnehan: cf. F. pneumatique. Cf. Pneumonia
1. Consisting of, or resembling, air; having the properties
of an elastic fluid; gaseous; opposed to dense or solid.
The pneumatical substance being, in some bodies, the
native spirit of the body. --Bacon.
2. Of or pertaining to air, or to elastic fluids or their
properties; pertaining to pneumatics; as, pneumatic
experiments. “Pneumatical discoveries.”
3. Moved or worked by pressure or flow of air; as, a
pneumatic instrument; a pneumatic engine.
4. (Biol.) Fitted to contain air; Having cavities filled with
air; as, pneumatic cells; pneumatic bones.
5. Adapted for containing compressed air; inflated with air;
as, a pneumatic cushion; a pneumatic tire, a tire formed
of an annular tube of flexible fabric, as India rubber,
suitable for being inflated with air.
[Webster 1913 Suppl.]
, or Pneumatic lever
contrivance for overcoming the resistance of the keys and
other movable parts in an organ, by causing compressed air
from the wind chest to move them.
, a system of tubes, leading to various
points, through which letters, packages, etc., are sent,
by the flow and pressure of air.
, a hoisting machine worked by compressed
, a tubular pile or cylinder of large
diameter sunk by atmospheric pressure.
, an air-exhausting or forcing pump.
. See Atmospheric railway
, a stout tube closed at one end, and
provided with a piston, for showing that the heat produced
by compressing a gas will ignite substances.
, a trough, generally made of wood or sheet
metal, having a perforated shelf, and used, when filled
with water or mercury, for collecting gases in chemical
. See Pneumatic dispatch