How Grandfather Clocks REALLY Work..

Welcome back to Creative Focus. The Long Case clock, more commonly known as the Grandfather Clock, is a common piece of furniture in many American homes. Its aesthetically pleasing facade and pleasant chimes combine with the functionality of the clock itself to form an integral part of a living room or hallway. But the long case clock that has been passed down from generation to generation was built on a few simple principles: potential energy, natural periodicity, and kinematics.

The core is the escapement, comprising pendulum, anchor & gears. The Pendulum takes one second to swing into position. It is attached to gears with special-shaped teeth. Each time the pendulum swings, the anchor releases one ‘tooth’. This tooth nudges the pendulum in the right direction & transfers enough energy to overcome friction & keep the pendulum swinging. These escapement gears are attached to a weight drum wound up by chains or cables. Every second, the weight drops a little & moves the second hand. The escapement gear is also connected to a gear train with more weights that drive the minute & hour hands. Cable-driven clocks are wound up by inserting a key or crank to set the weights whereas chain-driven clocks are set manually by pulling the weights up to the correct position.

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