Search Results for: Wooden frame photographs
(p. ) march, , g. j. clime. grand harmonica," with the strings stretched by weights, and struck by hammers. strips of glass ranged in a frame produce sounds also, by means of balls set on wires, or by coining in contact with wheels rapidly revolved by a treadle. nov , . john geib.
, , i . humphrey walton. ( ) pedal for causing. the grand hammer to strike one, two, or three strings ; the hammers" striking perpendicular hammers which strike the wires. ( ) the touch is regulated according to the fancy of the player, from the deepest to the most delicate [by] a regulating touch frame...
https://www.piano-tuners.org/history/patents.html