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Over time, square pianos were built in larger sizes with more keys and a wider range; by the 1830s, square grand pianos predominated, with changes to their internal mechanisms and construction that produced larger sounds and used higher string tensions. Square pianos were the most popular keyboard instrument of the late 18th century, and the ...
Jonas Chickering made several major contributions to the development of piano technology, most notably by introducing a one-piece, cast-iron plate to support the greater string tension of larger grand pianos. He also invented a new deflection of the strings, and in 1845 the first convenient method for over stringing in square pianos.
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Jean-Henri Pape, born as Johann Heinrich Pape and also known as Henry Pape [1] (1 July 1789 – 2 February 1875), was a French piano and harp maker in the early 19th century. Pape was born in Sarstedt , Germany , in 1789.
Johannes (Johann Christoph) Zumpe (pronounced zumpy; 14 June 1726 in Fürth, Free Imperial City of Nuremberg, modern Germany – buried 5 December 1790 in London, UK) was a leading maker of early English square pianos, a form of rectangular piano with a compass of about five octaves.
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