What drove 18th century clocks?

These timepieces were driven by heavy weights suspended on cords or chains inside the case. The gradual descent of these masses provided the constant energy needed to operate the gear train. Heavier movements, such as those with striking mechanisms or longer durations like eight days, required correspondingly substantial lead or iron weights to function properly.

How do I match weights to a clock?

Matching requires knowing the exact weight tolerances of the specific movement, whether it is an eight-day or thirty-hour system. Using incorrect mass will either cause the clock to run too fast, too slow, or stop entirely. Examining the materials, such as brass-cased cylinders or plain lead, helps determine the appropriate period and style for specific longcase or wall clock housings.

Where were clock weights placed?

In longcase clocks, the weights hung freely inside the trunk behind the door, dropping slowly alongside the pendulum as the clock ran down. Care was taken to ensure they hung clear of the swinging pendulum rod. For wall-mounted variants like lantern clocks, the weights were suspended openly beneath the case, dropping toward the floor on cords.

Are these weights period originals?

The listings on this page include components from the 18th century, Georgian era, and around 1800. Many survive alongside their original longcase and wall clock movements. Materials range from traditional lead and iron to brass-cased cylinders and granite turret components, reflecting the diverse scale of horological engineering in the period.