| slovo | definícia |
escapement
(encz) | escapement,krokové ústrojí n: Zdeněk Brož |
Escapement
(gcide) | Escapement \Es*cape"ment\, n. [Cf. F. ['e]chappement. See
Escape.]
1. The act of escaping; escape. [R.]
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2. Way of escape; vent. [R.]
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An escapement for youthful high spirits. --G. Eliot.
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3. The contrivance in a timepiece which connects the train of
wheel work with the pendulum or balance, giving to the
latter the impulse by which it is kept in vibration; -- so
called because it allows a tooth to escape from a pallet
at each vibration.
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Note: Escapements are of several kinds, as the vertical, or
verge, or crown, escapement, formerly used in watches,
in which two pallets on the balance arbor engage with a
crown wheel; the anchor escapement, in which an
anchor-shaped piece carries the pallets; -- used in
common clocks (both are called recoil escapements, from
the recoil of the escape wheel at each vibration); the
cylinder escapement, having an open-sided hollow
cylinder on the balance arbor to control the escape
wheel; the duplex escapement, having two sets of teeth
on the wheel; the lever escapement, which is a kind of
detached escapement, because the pallets are on a lever
so arranged that the balance which vibrates it is
detached during the greater part of its vibration and
thus swings more freely; the detent escapement, used in
chronometers; the remontoir escapement, in which the
escape wheel is driven by an independent spring or
weight wound up at intervals by the clock train, --
sometimes used in astronomical clocks. When the shape
of an escape-wheel tooth is such that it falls dead on
the pallet without recoil, it forms a deadbeat
escapement.
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escapement
(wn) | escapement
n 1: mechanical device that regulates movement |
| | podobné slovo | definícia |
escapement
(encz) | escapement,krokové ústrojí n: Zdeněk Brož |
Anchor escapement
(gcide) | Anchor escapement \An"chor es*cape"ment\ (Horol.)
(a) The common recoil escapement.
(b) A variety of the lever escapement with a wide impulse
pin.
[Webster 1913 Suppl.] |
Cylinder escapement
(gcide) | Cylinder \Cyl"in*der\ (s?l"?n-d?r), n. [F. cylindre, OF.
cilindre, L. cylindrus, fr. Gr. ky`lindros, fr. kyli`ndein,
kyli`ein, to roll. Cf. Calender the machine.]
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1. (Geom.)
(a) A solid body which may be generated by the rotation of
a parallelogram round one its sides; or a body of
rollerlike form, of which the longitudinal section is
oblong, and the cross section is circular.
(b) The space inclosed by any cylindrical surface. The
space may be limited or unlimited in length.
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2. Any hollow body of cylindrical form, as:
(a) The chamber of a steam engine in which the piston is
moved by the force of steam.
(b) The barrel of an air or other pump.
(c) (Print.) The revolving platen or bed which produces
the impression or carries the type in a cylinder
press.
(d) The bore of a gun; the turning chambered breech of a
revolver.
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3. The revolving square prism carrying the cards in a
Jacquard loom.
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Cylinder axis. (Anat.) See Axis cylinder, under Axis.
Cylinder engine (Paper Making), a machine in which a
cylinder takes up the pulp and delivers it in a continuous
sheet to the dryers.
Cylinder escapement. See Escapement.
Cylinder glass. See Glass.
Cylinder mill. See Roller mill.
Cylinder press. See Press.
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Deadbeat escapement
(gcide) | Deadbeat \Dead"beat`\, a. (Physics)
Making a beat without recoil; giving indications by a single
beat or excursion; -- said of galvanometers and other
instruments in which the needle or index moves to the extent
of its deflection and stops with little or no further
oscillation.
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Deadbeat escapement. See under Escapement.
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Detached escapement
(gcide) | Detached \De*tached"\, a.
Separate; unconnected, or imperfectly connected; as, detached
parcels. "Extensive and detached empire." --Burke.
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Detached escapement. See Escapement.
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Duplex escapement
(gcide) | Duplex \Du"plex\, a. [L., fr. duo two + plicare to fold. See
Two, and Complex.]
1. Double; twofold.
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2. (Computers) organized so that data may be transmitted in
two opposite directions over the same channel; -- of
communications channels, such as data transfer lines
between computers.
[PJC]
Duplex escapement, a peculiar kind of watch escapement, in
which the scape-wheel has two sets of teeth. See
Escapement.
Duplex lathe, one for turning off, screwing, and surfacing,
by means of two cutting tools, on opposite sides of the
piece operated upon.
Duplex pumping engine, a steam pump in which two steam
cylinders are placed side by side, one operating the
valves of the other.
Duplex querela [L., double complaint] (Eccl. Law), a
complaint in the nature of an appeal from the ordinary to
his immediate superior, as from a bishop to an archbishop.
--Mozley & W.
Duplex telegraphy, a system of telegraphy for sending two
messages over the same wire simultaneously.
Duplex watch, one with a duplex escapement.
half duplex (Computers)
(a) arranged so that the information may be transmitted in
both directions, but only in one direction at a time;
-- of communications channels between computers;
contrasted with full duplex(a).
(b) arranged so that the information transmitted to the
remote computer also appears on the local terminal; --
of communications channels between computers;
contrasted with full duplex(b).
full duplex, (Computers)
(a) arranged so that the information may be transmitted in
both directions simultaneously; -- of communications
channels between computers; contrasted with {half
duplex(a)}.
(b) arranged so that the information transmitted to the
remote computer does not appear on the local terminal;
-- of communications channels between computers;
contrasted with half duplex(b).
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Lever escapement
(gcide) | Lever \Le"ver\ (l[=e]"v[~e]r or l[e^]v"[~e]r; 277), n. [OE.
levour, OF. leveor, prop., a lifter, fr. F. lever to raise,
L. levare; akin to levis light in weight, E. levity, and
perh. to E. light not heavy: cf. F. levier. Cf. Alleviate,
Elevate, Leaven, Legerdemain, Levee, Levy, n.]
1. (Mech.) A rigid piece which is capable of turning about
one point, or axis (the fulcrum), and in which are two or
more other points where forces are applied; -- used for
transmitting and modifying force and motion. Specif., a
bar of metal, wood, or other rigid substance, used to
exert a pressure, or sustain a weight, at one point of its
length, by receiving a force or power at a second, and
turning at a third on a fixed point called a fulcrum. It
is usually named as the first of the six mechanical
powers, and is of three kinds, according as either the
fulcrum F, the weight W, or the power P, respectively, is
situated between the other two, as in the figures.
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2. (Mach.)
(a) A bar, as a capstan bar, applied to a rotatory piece
to turn it.
(b) An arm on a rock shaft, to give motion to the shaft or
to obtain motion from it.
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Compound lever, a machine consisting of two or more levers
acting upon each other.
Lever escapement. See Escapement.
Lever jack. See Jack, n., 5.
Lever watch, a watch having a vibrating lever to connect
the action of the escape wheel with that of the balance.
Universal lever, a machine formed by a combination of a
lever with the wheel and axle, in such a manner as to
convert the reciprocating motion of the lever into a
continued rectilinear motion of some body to which the
power is applied.
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Recoil escapement
(gcide) | Recoil \Re*coil"\, n.
1. A starting or falling back; a rebound; a shrinking; as,
the recoil of nature, or of the blood.
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2. The state or condition of having recoiled.
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The recoil from formalism is skepticism. --F. W.
Robertson.
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3. Specifically, the reaction or rebounding of a firearm when
discharged.
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Recoil dynamometer (Gunnery), an instrument for measuring
the force of the recoil of a firearm.
Recoil escapement. See the Note under Escapement.
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escapement
(wn) | escapement
n 1: mechanical device that regulates movement |
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