What is gear train?

Gear Train

A gear train is formed by mounting gears on a frame so that the teeth of the gears engage. Gear teeth are designed to ensure the pitch circles of engaging gears roll on each other without slipping, this provides a smooth transmission of rotation from one gear to the next.

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Some articles on gear train:

Escapements
... weight, transmitted through the timepiece's gear train ... The escapement releases the tooth of a gear, which therefore changes from a "locked" state to a "drive" state until the opposite arm strikes another tooth on the gear, which locks the gear again ... A clock's tick is the sound of the gear train stopping as the escapement locks ...
Backlash (engineering) - Gears
... Factors affecting the amount backlash required in a gear train include errors in profile, pitch, tooth thickness, helix angle and center distance, and runout ... most commonly created by cutting the teeth deeper into the gears than the ideal depth ... Another way of introducing backlash is by increasing the center distances between the gears ...
Gastown Steam Clock - How It Works
... a few hundred revolutions per minute, drives a reduction gear train ... The gear train drives an ascending chain lift to lift ball weights to a top track from which they load onto a drive chain providing the driving force to the clock while the ball weights descend ... The engine-driven gear train drives the lower sprocket of a vertical link-chain (similar to a bicycle chain), with a lift of about four feet ...
Gear Train - Examples
... Types of gear trains include Simple gear train Compound gear train Epicyclic gear train Reverted gear train ...
Mechanical Watch - Mechanism
... A gear train, called the going train, which has the dual function of transmitting the force of the mainspring to the balance wheel and adding up the swings of the balance wheel to get units ... A separate part of the gear train, called the keyless work, allows the user to wind the mainspring and enables the hands to be moved to set the time ... wheel vibrating by giving it a push with each swing, and allowing the clock's gears to advance or 'escape' by a set amount with each swing ...

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