Fritts, Charles Edgar. [from old catalog] · Philadelphia, The Keystone · leaf 37
mploy an electrician, you can fitup a different apparatus which will answer all purposes. Itconsists of a simple current reverser, made to screw into thelathe spindle as a chuck, and neither the magnet nor thewatch revolves. The magnetism is reversed in the magnet,and the watch slowly drawn away,… … Fig. 2. between the battery or dynamo and the coils of the magnet.The reverser is a boxwood or hard rubber rod. A, A, coveredwith a brass tube B, B, cut into two parts as shown. The shapeof the cut is the same on both front and back sides, and is filledflush with sealing-wax, to insulate the parts…
Clocks and watches
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
