Knight's American mechanical dictionary - a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary; and digest of mechanical (14779731914)

Identifier: knightsamericanm02knig (find matches)
Title: Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts
Year: 1882 (1880s)
Authors: Knight, Edward H. (Edward Henry), 1824-1883
Subjects: Industrial arts Mechanical engineering
Publisher: Boston : Houghton, Mifflin and Company
Contributing Library: NCSU Libraries
Digitizing Sponsor: NCSU Libraries



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ith the samelength of string, than in the usualpiano-forte actions. / K are, respectively, the hori-zontil aud upright piano-forteactions of Steinway and Sons. Others might be mentionedwould space permit, embracingthe peculiir constructions ofinstruments whose fame is widerthan the continent, such as theChiekering. Knabe, Ueher, Ual-let and Davis, Schomacker. andi others. On the stringing andconstruction of pianos, see Lebr-buch des Pianofortebasses, Wei-mar, 1S72. In Pepyss diary, October, lfit>4,another form of stringed instru-ment played by keys is thus de-scribed : — To the musique meeting at the post-office, where I wasonce before. And thither anon come all the Gresham College,and a great deal of noble company ; and the new instrumentwas brought called the Arched Viall, where, being tuned withlute-strings and played on with keys like an organ, a piece ofparchment is always kept moving; and the strings, which, bythe keys, are pressed down upon it, are grated in imitation of .
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i n by Messrs Atkins and Drewer, inwhich steel hooks a 6, having oneor more prongs, arc employed inplace ofstrings.the general arrange-ments of the key-board, action, andsounding-board resembling those ofthe upright piano. The hooks areattached to a metallic frame r, com-posed of two bars connected by pil-lars which alternate with the hook-support*, and cause the sound-board to vibrate by strikingagainst it. When the hooks have more than one prong, eachprong must be tuned to a different octave. A kind of glocken-speii. Pi-ano-forte Action. The motion-work of apiano-forte, includin,^ the key and hammer ami theitarts interreninLT. See Fi^s. 36S7 and 3688. Pi-ano-forte Haminer. The pen iissor in thepiano movement which is impelled by the key andstrikes the strincr. PIANOGRAPH. 1696 PICKER. »S\ a iii;ino, w