United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 334
9° 6. The combination of a phonograph dia-phragm, a magnetic portion at or near itscenter, a recorder having a magnetic arm andmeans for magnetizing it, and a spring con-necting said diaphragm and magnetic piece, 95substantially as described. This specification signed and witnessed this1st day of… … i (No Model.) 2 Sheets—Sheet 2. W. S. BURNETT. COMBINED PHONOGRAPH AND COIN OPEEATED MECHANISM. No. 502,246. Patented July 25, 1893.
Phonograph · Patents
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