Wightman Electric Manufacturing Company

The Wightman Glass Insulator.

A trolley line insulator made of glass was described in THE ELECTRICAL WORLD of Oct. 24. The article stated that glass would have been earlier adopted for trolley line insulation had any one devised a practical plan of connection between the trolley wire and span wire, in order to secure the glass insulator against breakage. The Wightman Electric Manufacturing Company, of Scranton, Pa., has been manufacturing a trolley wire insulator for the past two years, in which glass is used, and has found the same to meet all requirements. A cut of this insulator appears in this issue. It has been on the market for nearly two years, and from the many testimonials which have been received in regard to its efficiency, it would seem that a "practical plan" for protecting the glass against breakage has been secured in this insulator.

The Wightman Glass Insulator.