How to Insulate the Ends of Chair Posts
A CHAIR that is provided with insulation against electrical surges is invaluable for safety and efficiency in electrical operations, such as wiring, telegraphy, or high frequency work. Most chairs may be very easily adapted to such a use.
Four large common green glass insulators, such as are used on the crosstrees of telegraph poles, should be obtained. The four feet of the chair should be made to fit tightly into the holes of the insulators.
Since the hole in the bottom of the insulator is threaded, the insulator should be twisted on with a rotary motion. Besides insulating the chair, these insulators will serve in the place of domes for the legs of the CHAIR.-JOSEPH BRAFF.