The Grandfather Clocks Company – Grandfather Clock Movements   GRANDFATHER CLOCK MOVEMENTS   Grandfather Clocks use the following type of clock movements, Cable Driven Movements, Chain Driven Movement and Quartz Movement.   Cable and Chain driven clock movement use weights to power the clock and keep time, often made of brass these movements will keep time accurately and faithfully. This is a traditional method of powering a grandfather clock, as the clock requires no battery or electricity to power the clock (unless of course it is illuminated in which case the light will be powered by electricity).   Quartz movements are operated by battery and give you the benefits of a traditional grandfather clock but without requiring weekly winding.   Cable Driven Movement:   The weights in a cable driven grandfather clock power the clock and are held by a cable. A cable driven clock is wound approximately once a week with a brass crank or key that fits into the dial of a clock. The weights are pulled to the top of the clock.   Shown above: A cable driven movement by Kieninger Clock Company   Chain Driven Movement:   A grandfather clock movement that requires the chain attached to the weights to be pulled down once a week to raise the weights. The weights will then fall over the course of the week and that is what powers the clock.       Shown above: A chain driven movement by Kieninger Clock Company   Quartz Movement:   An electronic oscillator and a quartz crystal are used to power the clock keep precise time. In 1928 Bell Laboratories built the first quartz clock which is accurate to within 1-2 thousandths of a second per day. Quartz clock movements require batteries, electronic impulses pass from a battery through a quartz crystal powering the movement of the clock at regular intervals.