Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 527
al keys, andare similar to those of a piano. They vary from one to four or five sets or banks placed one abovethe other. The keys played by the feet are called pedals, and are conveniently disposed on the floor.Methods of Blowing.—The usual form of bellows which compresses and stores the air is… … should be ample to sustain the supply of wind with every stop drawn (except the tremolo) in thefollowing chords : Treble, E, G, C, E; bass, C, E, G, C ; pedal, C, G ; including also the couplers.The ordinary way of operating the bellows is by hand, and might be likened to pumping. In locali-ties…
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