United States. Patent Office · Washington, D.C., Govt. Print. Off. · leaf 632
spring arm, substantially as specified. 70 6. In a phonogram reproducing or copyingmechanism, the combination with a reproduc-ing stvlus mounted on a spring arm, of a re-cording stylus mounted on a weighted arm,and a lead wire connection between said 75spring arm and said weighted arm,…
Phonograph · Patents
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![An illustration from [Graphophone patents], 1878, leaf 632](https://img.insideoutlibrary.com/img/1024/ia-graphophonepaten02unit-632-272.webp)
