Fred Locke patent for extended inner skirt warning to infringers

[Trade Journal]

Publication: The Journal of Electricity

San Francisco, CA, United States
vol. 6, no. 1, p. 17, col. 1-2



ON June 7th letters patent were granted to Fred M. Locke, of Victor, N. Y., on an improved high tension insulator, by the design of which it is proposed to prevent leakage of the current from the wire over the insulator to the supporting pin, thereby obviating the burning off of the pin. This Mr. Locke accomplishes by so elongating the inner petticoat of the insulator that it will closely cover or enclose the supporting pin down to a point adjacent to the cross arm, and in addition this inner elongated petticoat is made smaller in diameter in proportion to the petticoats of the insulator above it.

The burning off of pins where high voltage currents are transmitted has rendered necessary some means of preventing this leakage, and Mr. Locke claims that this can be accomplished by the extension of the inner petticoat in the manner described, thus providing a protecting sleeve for the pin and increasing the arcing distance of the current around the insulator.

Mr. Locke desires the announcement made that parties buying such insulators from the R. Thomas Sons Company will be asked to pay royalties on the same.


Keywords:Fred Locke : Locke Insulator Manufacturing Company : Patent : R. Thomas & Sons Company : U-957 : U-957A : M-2795 : M-2796
Researcher notes:Primary porcelain styles covered by the patent are U-957, U-957A, M-2795 and M-2796. The patent also attempts to claim credit for glazewelding, which was upheld in the Thomas Boch patent final court decision against Fred Locke in January 1902.
Supplemental information: Patent: 605,109
Researcher:Elton Gish
Date completed:August 18, 2009 by: Elton Gish;