[X001M3218], Letter from Wilson Stout Howell to William J Jenks, December 6th, 1888

Item

Abstract

Dear Sir; Enclosed is a sketch of board for testing municipal circuits for continuity. An incandescence lamp of high resistance is placed in series with each municipal circuit during day light and the current taken from the bus wires (110 or 220 volts as is necessary) which will make carbon of test lamp and affording a constant and continuous test of the continuity of each municipal circuit, and show by extinguishment of its lamp, the opening of any circuit during daylight: tests for grounds will be make in usual manner, as grounds on the "domestic" system would render the testing of municipal grounds difficult or impossible with the 110 current. If you [xxx] of this device please mark it so and send to Bergmann Co. promptly. Yours very truly, Wilson S. Howell. Is it worth a patent? Good for our circuits run from stations using incandescence machines. H.

Recipient

Mentions

Date

1888-12-06

Decade

1880-1889

Type

Identifier

X001M3218

Folder Set

X001M3

Title

[X001M3218], Letter from Wilson Stout Howell to William J Jenks, December 6th, 1888

Microfilm ID

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University