قراءة كتاب Development of the Phonograph at Alexander Graham Bell's Volta Laboratory Contributions from the Museum of History and Technology, United States National Museum Bulletin 218, Paper 5, (pages 69-79)
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Development of the Phonograph at Alexander Graham Bell's Volta Laboratory Contributions from the Museum of History and Technology, United States National Museum Bulletin 218, Paper 5, (pages 69-79)
mechanisms. 'Tis a book, 'tis true, but a miraculous book, which has no pages or letters. Indeed, 'tis a book which to enjoy the eyes are useless; only ears suffice. When a man desires to read, then, he surrounds this contrivance with many small tendons of every kind, then he places the needle on the chapter to be heard and, at the same time, there come, as from the mouth of a man or from an instrument of music, all those clear and separate sounds which make up the Lunarians' tongue.'" (See A. Coeuroy and G. Clarence, Le phonographe, Paris, 1929, p. 9, 10.)
[3] Tainter retained a lifelong admiration for Alexander Graham Bell. This is Tainter's description of their first meeting in Cambridge: "... one day I received a visit from a very distinguished looking gentleman with jet black hair and beard, who announced himself as Mr. A. Graham Bell. His charm of manner and conversation attracted me greatly...." Tainter, op. cit. (footnote 1), p. 2.
[4] A. G. Bell apparently spent little time in the Volta Laboratory. The Dr. Bell referred to in Tainter's notebooks is Chichester A. Bell. The basic graphophone patent (U. S. patent 341214) was issued to C. A. Bell and Tainter. The Tainter material reveals A. G. Bell as the man who suggested the basic lines of research (and furnished the money), and then allowed his associates to get the credit for many of the inventions that resulted.
[5] Tainter, op. cit. (footnote 1), p. 3.
[6] Ibid., p. 5.
[7] Ibid., p. 30.
[8] As quoted by The Washington Herald, October 28, 1937.
[9] Tainter, op. cit. (footnote 1), pp. 28, 29.
[10] The basic distinction between the first Edison patent, and the Bell and Tainter patent of 1886 was the method of recording. Edison's method was to indent the sound waves on a piece of tin-foil (wax was included as a recording material in his English patent); the Bell and Tainter improvement called for cutting or "engraving" the sound waves into a wax record, with a sharp recording stylus.
The strength of Bell and Tainter patent is indicated by the following excerpt from a letter written by a Washington patent attorney, S. T. Cameron, who was a member of the law firm which carried on litigation for the American Graphophone Co. The letter is dated December 8, 1914, and is addressed to George C. Maynard, Curator of Mechanical Technology, U. S. National Museum: "Subsequent to the issuance of the Bell and Tainter patent No. 341214, Edison announced that he would shortly produce his 'new phonograph' which, when it appeared, was in fact nothing but the Bell and Tainter record set forth in their