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 562
PIANOFORTE. 539 … transmitted to the string of the instrument. The operation of any action is as follows: 1. Thedamper is lifted from the string. 2. The hammer is caused to strike and fly back. 3. The damperis replaced the instant the finger is lifted from the key. It will be evident that the prime require-ment of…
Mechanical engineering -- Dictionaries
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