[D8930AAB], Letter from Samuel Insull to West Orange Laboratory, January 15th, 1889

Item

Abstract

Further referring to your favors of the 9th, 10., and 1th. Inst., we find that the #420 compound would be very much better if it were less inflammable, and that the melting point should be considerably higher. These same remarks apply equally in the case of #434B, and this also has the same disadvantage of not being sufficiently liquid. Otherwise it appears to be just as good as the first above referred to compound. With relation to Compound #439, the melting point is higher than that of the other two, and it becomes liquid and works very well indeed, but it is too inflammable. #440 is entirely useless, being altogether too soft. We are compelled to pout a braid of white cotton outside of this compound, and if the melting point below it soaks right through the cotton disfiguring it it and rendering the wire useless.

Date

1889-01-15

Decade

1880-1889

Type

Identifier

D8930AAB

Folder Set

D8930

Title

[D8930AAB], Letter from Samuel Insull to West Orange Laboratory, January 15th, 1889

Microfilm ID

125:992

Publisher

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