Autograph Note Signed

Thomas A. Edison Autograph Note Signed

Thomas A. Edison Autograph Note Signed

Thomas A. Edison Autograph Note Signed   Thomas A. Edison Autograph Note Signed

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EDISON - AUTOGRAPH NOTE SIGNED - HFSID 67845. EDISON The inventor write to his lab supervisor regarding experiments on his favorite invention, the phonograph. ANS: " E " in pencil, 1p, 5x8, ruled sheet. In full, as written: You dont (sic) keep in touch with me = What has become of the Experiments to get blanks with hard Centers , Read this, still have soft Centers. It would appear easy to get the hard center. Handwritten postscript: " They have stopped using Rea [illegible] machine on Amberol for a week waiting for you to decide something say works OK but Knifes (sic) dull ". THOMAS ALVA Edison, who writes to laboratory supervisor, S. Moore, had introduced Amberol, an unbreakable cylinder , in November 1908 and then created the Blue Amberol, which had a longer playing time. Despite eventually turning from cylinders to discs, Edison's company continued to manufacture the Amberol cylinders until 1929.

Originally, in 1877, Edison's phonograph had a receiver, a delicate metal needle that operated on a phonograph blank of white wax. The surface of the wax blank (which looked like an ivory box) could record from 1,000 to 1,200 words or several musical compositions.

The wax blank then could be automatically pared from 15-20 times for new records. Between 1912 and 1926, Edison continually refined his discs starting with the Edison Disc Records in 1912 and launching his marketing sensation, The Re-Creation Disk, in 1919. The up and down groove enabled the record to play 50% longer than the "talking machine" record of the same size. A 10-inch Edison Disc record played longer than a 12-inch lateral groove. His Re-Creation Disk was molded in greater thickness and from a harder substance than an ordinary record, making it more durable. The phonograph was Edison's favorite invention. Lightly creased with folds, light vertical fold at the "E".

Chipped at blank right edge, irregular upper edge from removal from pad. See more material from these signers.

See more listings in our SCIENCE & MEDICINE (1,240). Please note that this is an authentically signed item. We do not sell autograph copies or signature reprints. Images shown may contain our company watermark. The actual document does not contain this watermark.

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Whether looking to add to your collection, acquire a unique centerpiece for the home or office, or as a truly one-of-a-kind gift for someone special, you'll find it here at HistoryForSale. Founded in 1981, is a long-standing UACC Registered Dealer, #RD110, and is a long-standing member of the Manuscript Society. The Gallery of History is the largest dealer in the world with an available inventory that exceeds 230,000 rare autographs and manuscripts. Preserving historical documents is important to us.

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There are no other warranties of any nature either expressed or implied, including but not limited to the warranties of merchantability and fitness for a particular purpose. EDISON AUTOGRAPH NOTE SIGNED" is in sale since Friday, May 29, 2020. This item is in the category "Collectibles\Autographs\Science, Inventor". The seller is "historydirect" and is located in Las Vegas, Nevada. This item can be shipped worldwide.
  1. Authentication: Numbered COA issued by Gallery of History, Inc.

  2. Signed by: Thomas A. Edison
  3. Autograph Type: Autograph Note Signed
  4. Autograph: Authentic Original

Thomas A. Edison Autograph Note Signed   Thomas A. Edison Autograph Note Signed