free part of the spring is soldered a small plate of plati pointedcontact screwj. The standardf is connected with the remainingpole of the battery cl. In the end of the spool far enough to be surrounded by several convo lutions of the primary wire. The primary coil is 1! INDEX OF INVENTIONS For which Letters Patent of the United States were Granted October 17 1893 AND EACH BEARING THAT DATE. 505745 Beehive T. 0. Hines 507070, scientific american, 1893-10-28
free part of the spring is soldered a small plate of plati pointedcontact screwj. The standardf is connected with the remainingpole of the battery cl. In the end of the spool far enough to be surrounded by several convo lutions of the primary wire. The primary coil is 1! INDEX OF INVENTIONS For which Letters Patent of the United States were Granted October 17 1893 AND EACH BEARING THAT DATE. 505745 Beehive T. 0. Hines 507070, scientific american, 1893-10-28
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