See pipe chest.

Suction-operated (or rarely, pressure-operated) motor used for turning music rolls, or for other devices. * Synonyms: air motor, vacuum motor.

Pressure, usually measured in inches or in centimeters of water, of air used to operate pipes or pressure-operated pneumatic actions. Refer to definition of "pipe" for further information.

Wurlitzer’s term for a rotating jeweled ball, illuminated with a light bulb in the center, and surrounded by a segmented mirror cone. Used as a decorative effect on certain coin piano, orchestrion, and organ cabinets. A popular feature in many models of Wurlitzer orchestrions.

Hardwood block, usually hollow or with a cavity, struck by a hard beater. A popular effect of dance band drummers during the acoustic recording era, as it produced prominent syncopated accents that could be heard in early recordings better than the snare drum could. Very popular in orchestrions during this same era. The piccolo wood block is much smaller and produces a very loud high-pitched tone. * Synonyms: Chinese block, Indian block, wood drum. * Dutch: jazzblokjes, blok. * German: Holz Trommel.