File:US2203569A Musical Instrument (1940-03-08 filed, 1940-06-04 published) by Laurens Hammond - Solovox.pdf

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English: US patent application 2203569, Laurens Hammond, "Musical Instrument", published 1940-06-04  , filed 1940-03-08
  • Figure 1 is a side elevation of the combined electrical musical instrument and grand type piano-portions of the latter being broken away more clearly to show the keyboard for the electrical portion of the instrument;
  • Figure 2 is a perspective view of the electrical portion of the musical instrument combined with an upright type piano;
  • Figure 3 is a vertical sectional view of the keyboards of the instrument;
  • Figure 4 is a fragmentary horizontal sectional view taken on the line 4-4 of Figure 3;
  • Figure 5 is a fragmentary vertical sectional view taken on the line 5-5 of Figure 3;
  • Figure 6 is a fragmentary plan view of the keyboards of the instrument;
  • Figure 7 is a fragmentary front elevational view of the keyboards of the instrument;
  • Figures 8, 9, 10 and 11 are fragmentary sec tional views showing the keyboard for the electrical portion of the instrument attached to pianos having various front contours;
  • Figure 12 is a fragmentary bottom plan view showing an adjustable mounting for the keyboard of the electrical portion of the instrument;
  • Figure 13 is a side elevational view of the keyboard for the electrical portion of the instrument attached to the piano portion thereof, the latter being shown in fragmentary section;
  • Figure 14 is a fragmentary sectional view taken on the line l4--I4 of Fig. 12; and,
  • Figures 15, 16, 17 and 18 show the positions of the player's hands on the keyboards of the combination instrument.
Date (filed)
1940-06-04 (published)
Source US Patent Office
Author
creator QS:P170,Q123678
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May or may not be in the public domain In general, the contents of United States patents published before March 1, 1989 are in the public domain.[1]

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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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