Englund's curve insulator

[Trade Journal]

Publication: The Electrical Engineer

New York, NY, United States
vol. 10, no. 126, p. 372,373, col. 1,1





The insulator shown in the accompanying cut is for use where unusual strains have to be met. The managers of the Electric Merchandise Company, Chicago, who are the owners of this patent, have, during the last few years, experimented very largely with a view of securing a centre curve insulator which, while being neat in appearance, would have the requisite strength needed for all demands. The objection offered to those heretofore made has been that, to get the needed strength, it has been necessary to have the insulator so heavy that it has been unwieldy to handle, and heavy in appearance on the line; while if attempts have been made to lighten it, openings have had to be made, which, filling with rain and snow, have destroyed the insulation.


This illustration has not been processed yet.


The insulator illustrated is a solid but very neat coil of rubber, but nine inches in length, and when placed on the line, it is scarcely discernible. It is, however, protected on the inside of the rubber so securely that it will stand any strain which may be put upon it, even to holding the extreme ends of the line.


Keywords:Trolley Insulator : Need Image
Researcher notes: 
Supplemental information: 
Researcher:Bob Stahr
Date completed:February 2, 2011 by: Bob Stahr;