[NM030019], Technical Note, Thomas Alva Edison, June 22nd, 1887
https://edisondigital.rutgers.edu/document/NM030019
PDF: Archive.org
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Metadata
- Title
- [NM030019], Technical Note, Thomas Alva Edison, June 22nd, 1887
- Editor's Notes
- "Cylinders for phonographs Take split mould you used for Plaster Paris & mould following substances Melt Asphalt in Crucible pour-- Melt [asphalt] mixed with equal quantity Kaolin. Melt Rosin mixed with 1/4 weight or bulk of Asphalt. Melt Rosin mixed with 1/4 weight Chalk or Kaolin [Melt Rosin mixed with] 1/2 [weight Chalk or Kaolin] Melt Parafine mixed with 1/2 its bulk Rosin Melt [Rosin mixed with] 1/2 [its bulk] Chalk or Kaolin Duplicating Ink-- Aniline Violet in water strong solution mixed with gum tagacanth, various proportions of each Write on good writing paper; after drying transer to Blotting paper moistened, then from this take the duplicate. Rig up a vat for covering parafine paper on one side only [drawing]"
- Author
- Edison, Thomas Alva
- Date
- 1887-06-22
- Type
- Technical Note
- Folder ID
- NM030-F
- Microfilm ID
- 106:666
- Document ID
- NM030019
- Publisher
- Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
- Has Version
- Archive.org Viewer, Microfilm Series Reel 106
- Item sets
- [NM030-F] Notebook (1887)