Portable grand pianoforte

Portable grand pianoforte *upright piano invented by John Isaac Hawkins of Philadelphia in 1800 and patented by him there. His father, Isaac, patented it in England on his behalf in the same year. The piano was vertically strung, with strings reaching down to the ground, and the soundboard was set in a metal frame and braced with metal bars; the pin block was of metal. It had a 5-oct. compass, F1–f3. Height only 138 cm. (52½ in.) (92; A. J. Hipkins in: Encyclopaedia Britannica, 14th ed.)…