[NB002004], Technical Note, Arthur Coyle Payne, May 12th, 1887
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Title
[NB002004], Technical Note, Arthur Coyle Payne, May 12th, 1887
Editor's Notes
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."
Author
Mentioned
Date
1887-05-12
Type
Subject
Folder/Volume ID
NB002-F
Microfilm ID
101:542
Document ID
NB002004
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University