[LM112003], Letter from Arthur Edwin Kennelly to Edison Machine Works, Samuel Insull, August 2nd, 1889

Item

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Abstract

"In reply to your letter of y esterday's date, I beg to say that I had [tested?] the specimens of Bonsilate you forwarded, for mechanical and electrical purposes. ## It is [illeg] than either hard rubber or vulcanized fiber. It takes a thread readily, turns well in the lathe and is more convenient to work than either rubber or fiber. It is however more brittle than those materials and not nearly so tough as fibres. For many purposes however it is mechanically preferable to rubber and fiber. ## After exposure to a temperature of 115C for six hours these Bonsilate speciments slightly [iileg] and warped darkening also in color, but this behavior was no more than that of fibre and rubber. ## One of these specimens gainly only 1.5% in weight by cooking in wtaer or 20 hours shewing that the material is practically waterproof> ## This material is not fireproof, for it will catch fire, but it does so with difficulty and the flame gradually extinguishes. I could not get it to catch fire by flashing a spark across its surface. It is much less inflammable than hard rubber, but rather more inflammable than vulcanized fiber. ## It is not apparently attacked by the ordinary acids or ammonia. . . . ."

Date

1889-08-02

Decade

1880-1889

Type

Identifier

LM112003

Folder Set

LM112

Title

[LM112003], Letter from Arthur Edwin Kennelly to Edison Machine Works, Samuel Insull, August 2nd, 1889

Microfilm ID

109:334

Publisher

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