[NB002004], Technical Note, Arthur Coyle Payne, May 12th, 1887

Item

Abstract

Payne No. 2. Took 10 forms each containing 3 reg. 16. C.P. preliminary fibres; placed them in plumbago crucible & filled in with small pieces of tin, so that when tin was melted the molten metal would stand about 2 in. over forms. Forms fixed so they could not float & fibres wre arranged so they could contract in reg. way. Run through final carbonization in Lawson's furnace. After taken from furnace, allowed to coold down to dull red, & just before reaching solidifying point metal poured out. Crucible immediately filled with powdered plumbago to keep out oxygen & also to prevent cooling off so rapidly. Left until thoroughly cooled. Found 7 broken; broke 3 in detaching the small pieces of tin that adhered to carbons, having 20 carbons in good condition. Carbons when put in forms were quite crooked, but during process seem to have gotten straighter. Came out dark & smooth-- not very shiny. The forms were cut out at each end and aboutan inch on each side to allow the metal free access. Delivered 20 carbons to Edison Marked Payne No. 2."

Date

1887-05-12

Decade

1880-1889

Identifier

NB002004

Folder Set

NB002

Title

[NB002004], Technical Note, Arthur Coyle Payne, May 12th, 1887

Microfilm ID

101:542

Publisher

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

Item sets