Different Movement Types of Coo Coo Clocks (Cuckoo Clocks)

There are two kinds of movements: one-day (30-hour) and eight-day movements. Some have musical movements, and play a tune on a Swiss music box after striking the hours and half-hours. Usually the melody sounds only at full hours in eight-day clocks and both at full and half hours in one-day clocks. Musical cuckoo clocks frequently have other automata which move when the music box plays. Today's Coo Coo Clocks (cuckoo clocks) are almost always weight driven, though a very few are spring driven. The weights are made of cast iron in a pine cone shape and the "cuc-koo" sound is created by two tiny gedackt (pipes) in the clock, with bellows attached to their tops. The clock's movement activates the bellows to send a puff of air into each pipe alternately when the clock strikes.

What are Coo Coo Clocks? (correctly spelt Cuckoo Clocks)

A cuckoo clock (commonly misspelt coo coo clock, kuckoo clock, coocoo clock, cockoo clock) is a clock, typically pendulum-driven, that strikes the hours using small bellows and pipes that imitate the call of the Common Cuckoo in addition to striking a wire gong. The mechanism to produce the cuckoo call was installed in almost every kind of cuckoo clock since the middle of the eighteenth century and has remained almost without variation until the present.