Reed pipe imitative of the orchestral French horn. Less brilliant than a trumpet. In fairground organs the French horn has a brass resonator similar in appearance to a trumpet. In pipe organs, the French horn has a capped gray metal conical resonator.

A system used in some electric pianos and orchestrions whereby power is transferred from a flywheel to a drive shaft by means of a rubber-tired wheel affixed to the drive shaft and which rides on the lateral surface of the flywheel. Speed is regulated by moving the wheel closer or farther from the center of the flywheel.

All ranks of an instrument (such as a photoplayer or pipe organ) playing at once.

Grooved conical pulley used in early cylinder music boxes and other mechanical instruments. As the spring winds down, the drive chain or cord winds onto the large end of the cone, keeping the force fairly constant.