![]() ![]() A cabinetmaker by trade, Chickering underwent an exacting 4-year apprenticeship, and his small but prosperous company produced 47 instruments a year by 1829. Innovation certainly had been on Jonas Chickering’s mind when he founded the piano company in April 1823 in Boston. These innovations almost immediately became standard features with all other piano manufacturers! And in 1845, they secured an additional patent for the first practical method of over-stringing for square pianos, with the patent applied to uprights in 1849. ![]() ![]() They introduced the first practical casting of a modern iron frame built to sustain the great tension of the strings of the piano, so the instrument could stay in tune for a considerably longer period of time. Take for example the 1837 worldwide patent registered by the Boston piano manufacturer Chickering & Sons. Some inventions completely revolutionize the further development of an instrument. “The Transformation of American Piano Making” ![]()
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