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Scientific American, Vol. 56, No. 6 (1887) (1887)
leaf 3
about? Up to the pres- which passes a shaft. One face of the disk is formed ent, the means have been of the most elementary char- D, which is a reproduction, on a small scale, of the one with cutting teeth, while the hub of the shaft upon between the scenes. The two apparatus are con- acter. The… … Fig. 3—-MECHANISM OF THE BATON, ‘Fig: 2.-ELECTRIC MUSIQ BATON. Fig, 1,-LEADER’S STAND. © 1887 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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