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The preferred material for the bell clapper was wrought iron but because this is no longer obtainable wood or cast iron clappers are now used. [29] [30] The clapper or tongue is manufactured in a similar process as the bell.
The strike may be made by an internal "clapper" or "uvula", an external hammer, or—in small bells—by a small loose sphere enclosed within the body of the bell (jingle bell). Bells are usually cast from bell metal (a type of bronze) for its resonant properties, but can also be made from other hard materials. This depends on the function.
The clapper is a rigid steel or wrought iron bar with a large ball to strike the bell. The thickest part of the mouth of bell is called the soundbow and it is against this that the ball strikes. Beyond the ball is a flight, which controls the speed of the clapper. In very small bells this can be nearly as long as the rest of the clapper.
The clapper is a rigid steel or wrought iron bar with a large ball to strike the bell. The thickest part of the mouth of bell is called the soundbow and it is against this that the ball strikes. Beyond the ball is a flight, which controls the speed of the clapper. In very small bells this can be nearly as long as the rest of the clapper.
Christian church bells have the form of a cup-shaped cast metal resonator with a flared thickened rim, and a pivoted clapper hanging from its centre inside. It is usually mounted high in a bell tower on top of the church, so it can be heard by the surrounding community. The bell is suspended from a headstock which can swing on bearings.
The bells are cast in bronze, hung in fixed suspension, and tuned in chromatic order so that they can be sounded harmoniously together. They are struck with clappers connected to a keyboard of wooden batons played with the hands and pedals played with the feet.