US1970 18410210 Mannerofconstructingtheactionpartofpianofortes Fig1

US1970 18410210 Mannerofconstructingtheactionpartofpianofortes Fig1

From patent specification: A, Fig. 1, is the key, supported and moving on a fulcrum at a in the usual manner. B is the jack attached to the key. C is the fly or sticker operated by a spring D and a regulating screw E with its button F ; the same being constructed after the common method now generally in use. The foot of the hammer G is supported and turns on a pin b passing through the same and the two sides c, d, of a perpendicular stud H, secured to the cross rail I by a screw e. K, is a rail, having its face covered with cloth L, upon which the hammers fall and rest after striking the strings. The lower part or center block f, of the hammer, has a suitable notch g on which the fly or escapement of the grasshopper acts to throw the hammer forward. This notch g is shaped somewhat differe...

#["us1970" #"18410210" #"mannerofconstructingtheactionpartofpianofortes" #"fig1"]

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UploadedMay 4, 2026

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