. Bulletin - United States National Museum. Science. Figure Experimental Graphofhonk photo- graphed in 1884 at the \'olta Laboratory. This is similar to one preserved at the Smithsonian Institu- tion. {Smilhsonian photo 44312-Z).) least 8 feet from the ; The point of the jet is glass, and could be directed at a single groove. The other experimental Graphophones indicate an amazing range of experimentation. While the method of cutting a record on wax was the one later exploited commercially, everything else seems to have been tried at least once. The following was noted on W
. Bulletin - United States National Museum. Science. Figure Experimental Graphofhonk photo- graphed in 1884 at the \'olta Laboratory. This is similar to one preserved at the Smithsonian Institu- tion. {Smilhsonian photo 44312-Z).) least 8 feet from the ; The point of the jet is glass, and could be directed at a single groove. The other experimental Graphophones indicate an amazing range of experimentation. While the method of cutting a record on wax was the one later exploited commercially, everything else seems to have been tried at least once. The following was noted on Wednesday, March 20, 1881: "A fountain pen is attached to a diaphragm so as to be vibrated in a plane parallel to the axis of a cylinder—The ink used in this pen to contain iron in a finely divided state, and the pen caused to trace a spiral line around the cylinder as it turned. The cylinder to be covered with a sheet of paper upon which the record is made. . This ink . . can be rendered magnetic by means of a permanent magnet. The sounds were to be reproduced by simply substituting a magnet for the fountain pen . ." The result of these ideas for magnetic reproduction resulted in patent 341287, granted on May 4. 1886; it deals solely with "the reproduction, through the action of magnetism, of sounds by means of records in solid ;. Figure 6.—Another Experimental Graphophone, photographed at the V'olta Laboratory in 1884. [Smithsonian photo 44312-F.) The air jet used in reproducing has already l)ccn descriljed. Other jets, of molten metal, wax, and water, were also tried. On Saturday. May 19. 1883, Tainter wrote (see fig. 3): Made the following experiment today: The cylinder of the Edison phonograph was covered with the coating of paraffine-wax and then turned off true and smooth. A cutting style .\.. secured to the end of a lever B was then adjusted over the cylinder, as shown. Lever B was pivoted at the points C-D. and the only pressure exerte
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
