escapement 音标拼音: [ɪsk'epmənt]
n . 逃路;卡子
逃路;卡子
escapement n 1 :
mechanical device that regulates movement Escapement \
Es *
cape "
ment \,
n . [
Cf .
F . ['
e ]
chappement .
See {
Escape }.]
1 .
The act of escaping ;
escape . [
R .]
[
1913 Webster ]
2 .
Way of escape ;
vent . [
R .]
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1913 Webster ]
An escapement for youthful high spirits . --
G .
Eliot .
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1913 Webster ]
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 .
[
1913 Webster ]
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 .
[
1913 Webster ]
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