[NM018AAD], Patent Application, Thomas Alva Edison, March 4th, 1883

Item

Abstract

"The object of the invention is to automatically maintain a balance or quilibrium in the number of lamps between two circuits" in 3-wire system. Uses electromagnetic relay to switch electrical loads from one side to the other, says there should be a device like this for every ten houses or so, though fewer needed in a large distribution system than in a small one. Detailed description follows, but no dwg. This seems to be generally the basis for US Pat 283,983 but see also 283,984 and 287,517 filed slightly earlier. SEE IF ANY OF THESE PATENT DRAWINGS MATCH THE DESCRIPTION IN TEXT.

Mentions

Date

1883-03-04

Decade

1880-1889

Identifier

NM018AAD

Folder Set

NM018

Title

[NM018AAD], Patent Application, Thomas Alva Edison, March 4th, 1883

Microfilm ID

44:540

Publisher

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

Item sets