[LB055226], Letter from Alfred Ord Tate to Charles Summer Wirt, January 22nd, 1892
https://edisondigital.rutgers.edu/document/LB055226
Transcription
Jan. 22, 1892. Charles Wirt, Esq., The Electrical Supply Co., Chicago, Illinois. Dear Sir:- Your letter of 12th instant was duly received, and in compliance with the request contained therein I take much pleasure in sending to you by this mail, under separate cover, a large panel portrait of Mr. Edison, which I have had him dedicate to yourself. The hard rubber shells for use in connection with the phonograph, which I referred to in my previous letter, are shells made of hard rubber that fit over his tie brass mandrail, the phonograph cylinder in turn fitting over the shell. In practice these shells were found efficacious in preventing the cracking or cylinders from the cause mentioned by you. Their manufacture has been abandoned, however, for the reason stated in my last letter. The cylinders used with those shells were of a special pattern, as the ordinary blanks would not answer. Yours very truly, A. O. Tate Private Sec'y. M.