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Scientific American, Vol. 87, No. 17 (1902) (1902)
leaf 8
n all re- the rotating synchronizer, S, but with a speed reduc- spects alike, any description will apply to the one as vibrate and will remain against the contact point tion of 13 to 1. The commutator may be rotated which the previous wave had carried it. The trai well as to the other. through a… … Receiving a Message on the Page-Printer. A Group of Keyboards. © 1902 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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