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File:US2253782A Keyboard for Electrical Musical Instrument (1940-05-07 filed, 1948-08-26 published) by Laurens Hammond - Solovox.pdf

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Description
English: US patent application 2253782, "Keyboard for Electrical Musical Instrument", published 1948-08-26 , assigned to Hammond Instrument Company , filed 1940-05-07
  • Figure 1 is a perspective view of the keyboard of my invention showing it as attached to the front rail of a piano;
  • Figure 2 is an enlarged transverse sectional view of the keyboard taken on the line 2-2 of Fig. 1;
  • Figure 2a is an enlarged sectional view of the tablet switch mechanism and tablet 'mounting taken on the line 2a--2a of Fig. 4; and
  • Figures 3 to 8 inclusive are longitudinal sectional views taken on the lines 3-3 to 8--8 inclusive, respectively, of Fig. 2.
Date (filed)
1948-08-26 (published)
Source US Patent Office
Author
Laurens Hammond  (1895–1973)  wikidata:Q123678
 
Laurens Hammond
Description American inventor
Date of birth/death 11 January 1895 3 July 1973
Location of birth/death Evanston Cornwall
Authority file
creator QS:P170,Q123678
Other versions
  • US2253782A Keyboard for Electrical Musical Instrument (1940-05-07 filed, 1948-08-26 published) by Laurens Hammond - Solovox.pdf
    US2253782A Keyboard for Electrical Musical Instrument (1940-05-07 filed, 1948-08-26 published) by Laurens Hammond - Solovox.pdf
  • US2253782A Keyboard for Electrical Musical Instrument (1940-05-07 filed, 1948-08-26 published) by Laurens Hammond - Solovox Fig1.jpg
    US2253782A Keyboard for Electrical Musical Instrument (1940-05-07 filed, 1948-08-26 published) by Laurens Hammond - Solovox Fig1.jpg
  • US2253782A Keyboard for Electrical Musical Instrument (1940-05-07 filed, 1948-08-26 published) by Laurens Hammond - Solovox Fig1 (trim).jpg
    US2253782A Keyboard for Electrical Musical Instrument (1940-05-07 filed, 1948-08-26 published) by Laurens Hammond - Solovox Fig1 (trim).jpg

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 In general, the contents of United States patents are in the public domain.

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A portion of the disclosure of this patent document contains material which is subject to (copyright or mask work) protection. The (copyright or mask work) owner has no objection to the facsimile reproduction by any­one of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent file or records, but otherwise reserves all (copyright or mask work) rights whatsoever.

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