United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 416
herefrom. I claim as my invention— 1. A mandrel for phonographs made com- 90plete in one piece and its interior rigid and itsoutside surface elastic, substantiallj as andfor the purposes stated. 2. A mandrel for phonographs that has anexterior elastic surface and its interior rigid, 95to operate in… … F/^.2
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents], 1878, leaf 416](https://img.insideoutlibrary.com/img/1024/ia-graphophonepaten02unit-416-187.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten15unit-1215-625.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-773-503.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten10unit-137-113.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-281-195.webp)
