head, which is se- terials are inexpensive , no great mechanical skill is re- quired in its construction ; and its sensitiveness and ac cured between curacy are sufficient for the requirements of most elec- two thick plates of mica, the shank tricians. Besides all this, it is perfectly "dead… … To a block attached to the base, opposite the center net and the iron down the upper silver wire, then through the coil, the cylinder. The terminals of the coll are soldered to the of the magnet, is secured a tapering spring, tV inch lower silver wire, and the spring to the other binding silver…
Patented · Gas · Water · Shaft · Patents · Scientific American · Center · Whooping crane · Sea lions · Natural gas · Barrel head · Horse power · Address munn · Express money · Great wall · Novel construction
Internet Archive · Public domain (published before 1931). Free to use for anything.
