(from the article `clock`) In a pendulum clock an escape wheel is allowed to rotate through the pitch of one tooth for each double swing of the pendulum and to transmit an ...
carries the second-hand, has thirty teeth rather than the usual fifteen, so that the hand makes a complete circle in fifteen seconds. Â A watch with this arrangement (usually a rack-lever) can be recognised at once because the seconds dial is numbered only 5-10-15.
The final (usually fifth) wheel of the train, bearing specially-shaped teeth which interact with the pallets.
[n] - gear that engages a rocking lever
noun gear that engages a rocking lever
a toothed wheel for regulating a going train to which it is geared, engaging intermittently with the pallets of a pendulum or balance mechanism in such a way as to cause the mechanism to oscillate rhythmically, and in so doing free the going train for part of each oscillation. Also calledSee diag. under