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Scientific American, Vol. 56, No. 24 (June 1887) (1887)
leaf 7
oden disk, the other been found very useful in experiments in connection globe is 67 a minute, 97,790 a day, and 35,639,835 a with the eight light dynamo, recently described in to be fluted like a tap and used for cutting the edge of the wooden disk, so as to convert it into a worm wheel these… … Fig. l.-SIMPLE ARC LAMP. © 1887 SCIENTIFIC AMERICAN, INC.Patents · Munn · Tripod · Patented · Scientific American · Solder · Wrought iron · Natural gas · American supplement · Express money · Tripod head · Address munn · Screw cutting · Test tubes · Letters patent
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