United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 27
series of small compartments below saidhorn, a sound conveyer connecting said re- 30producer with .said horn, and an adjustableclosure for opening and closing the mouth ofsaid amplifier and for giving access to saidcompartments. In Avitness whereof I have hereunto set my 35hand this twentv-fifth…
Phonograph · Patents
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents], 1878, leaf 27](https://img.insideoutlibrary.com/img/1024/ia-graphophonepaten10unit-27-40.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-1041-661.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten20unit-797-363.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten15unit-729-394.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten02unit-748-321.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-943-602.webp)
