The Thomas A. Edison Papers Digital Edition

PDF: Archive.org
CSV: Metadata

Metadata

Title

[NM020ABF], Technical Note, Thomas Alva Edison, September 26th, 1886

Editor's Notes

[685 686 & 687] "Dick Patent I take the vegetable filiment before carbonziation and soak it for several hours in a solution which contains disolved carbonizable matter such as sugar molasses, Licorice, coal tar= these materials permeating the interstices between the microscopic fibres of which the filiment is made up the filiment is then taken out of the solution the surface cleaned from the adhering solution & then allowed to dry afterwards it is placed under strain & pressure in the moulds & then put in closed boxes & carbonized the extra material being between the fibres carbonization & seems to lock them together and thus cause the electric current to pass through all parts of the filiment equally claim-- The strength of the solutions should be of a consistency a little less than table syrup-- it may be varied within wide limits and still accomplish the results-- Claim soaking the filiments of previous to carbonization in a solution containing a carbonizable material in solution.-- Dick-- I think some one has soaked wood in sugar etc & afterwards carbonized same for arc carbons, so draw your claims accordingly 2nd patent Doing the same thing to filiments already carbonized or partially carbonized & then carbonizing them again & fully Dick Carree makes his arc carbons by squirting the compound of ground carbon & tar through die carbonizing & then soaking in sugar etc & recarbonizing hence you should draw your claims to get around this. Prepare these immediately

Author

Edison, Thomas Alva

Mentioned

Dyer, Richard Nott

Date

1886-09-26

Type

Technical Note

Subject

Carbon, coal, glass, ceramics

Cellulose, resins, rubber, and related products

Incandescent lamp

Folder ID

NM020-F

Microfilm ID

44:750

Document ID

NM020ABF

URL

https://edisondigital.rutgers.edu/document/NM020ABF

Rights

Thomas Edison National Historical Park

Publisher

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

Has Version

Archive.org Viewer, Microfilm Series Reel 44

Item sets

[NM020-F] Cat.1151 (1885-1886)