[D8930AAV], Letter from Samuel Insull to West Orange Laboratory, May 28th, 1889

Item

Abstract

We must apologize for having overlooked replying to your favor of May 11th., the delay having been entirely owing to press of business in our Wire Department, which has compelled us to lay aside the matter of experiments for the present. We are now testing, and will report to you fully within the next few days. ## On April 26th you sent us three samples of Fire-proof wire, which after being tested appeared to be fairly good, so far as their fire-proof qualities were concerned. The insulation, however is very porous and it would appear to be saturated with some active chemical material, which entirely destroyed the copper. The two samples which we enclose you herewith, we placed about 1 ½ inches apart upon a board and kept damp. A pressure of 110 volts was kept on these wires for a period of 12 hours, during which time the moisture penetrated through to the wire, and the current entirely destroyed one of them.P.S. This also refers to your telegram of even (xxxx?)

Date

1889-05-28

Decade

1880-1889

Type

Identifier

D8930AAV

Folder Set

D8930

Title

[D8930AAV], Letter from Samuel Insull to West Orange Laboratory, May 28th, 1889

Microfilm ID

125:1013

Publisher

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