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  2. Wheel train - Wikipedia

    en.wikipedia.org/wiki/Wheel_train

    First or great wheel attached and ratcheted to the main spring, or cable, barrel. The ratchet allows the main spring or cable barrel to be wound without turning the wheel. In horology jargon the pawl of the ratchet is called "the click". The first wheel turns the pinion of the center wheel. Center or second wheel which turns once

  3. Clockmaker - Wikipedia

    en.wikipedia.org/wiki/Clockmaker

    Early clockmakers fashioned all the intricate parts and wheelwork of clocks by hand, using hand tools. They developed specialized tools to help them. [6] Balance Truing Caliper: This device was used in fashioning the wheels and gearwork of the clock, to make sure the wheel, particularly the balance wheel was balanced and circular. The pivots of ...

  4. Anchor escapement - Wikipedia

    en.wikipedia.org/wiki/Anchor_escapement

    The backward motion of the escape wheel during part of the cycle, called recoil, is one of the disadvantages of the anchor escapement.It results in a temporary reversal of the entire wheel train back to the driving weight with each tick of the clock, causing extra wear in the wheel train, excessive wear to the gear teeth, and inaccuracy.

  5. Cycloid gear - Wikipedia

    en.wikipedia.org/wiki/Cycloid_gear

    2. The gear trains used in clocks and watches have multiple stages of wheels and pinions in which the pinions have few leaves. Involute designs for these leaves would be undercut, making them too fragile and difficult to manufacture. 3. A large aspect of the design of watch and clock movements is the minimisation of friction.

  6. Rack and pinion - Wikipedia

    en.wikipedia.org/wiki/Rack_and_pinion

    A rack and pinion has roughly the same purpose as a worm gear with a rack replacing the gear, in that both convert torque to linear force. However the rack and pinion generally provides higher linear speed — since a full turn of the pinion displaces the rack by an amount equal to the pinion's pitch circle whereas a full rotation of the worm screw only displaces the rack by one tooth width.

  7. Movement (clockwork) - Wikipedia

    en.wikipedia.org/wiki/Movement_(clockwork)

    Large gears known as wheels mesh with small gears known as pinions. The wheels in a typical going train are the centre wheel, third wheel, and fourth wheel. A separate set of wheels, the motion work, divides the motion of the minute hand by 12 to move the hour hand and in watches another set, the keyless work, allows the hands to be set. Escapement

  8. Interchangeable parts - Wikipedia

    en.wikipedia.org/wiki/Interchangeable_parts

    Terry saw the potential of clocks becoming a household object. With the use of a milling machine, Terry was able to mass-produce clock wheels and plates a few dozen at the same time. Jigs and templates were used to make uniform pinions, so that all parts could be assembled using an assembly line. [19]

  9. Pin-pallet escapement - Wikipedia

    en.wikipedia.org/wiki/Pin-pallet_escapement

    The pins and part of escape wheel are visible at bottom center. The GIF is slowed down to make the mechanism movement easier to see. A Roskopf , pin-lever , or pin-pallet escapement is an inexpensive, less accurate version of the lever escapement , used in mechanical alarm clocks , kitchen timers , mantel clocks and, until the 1970s, cheap ...

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