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[PT032ABE], Patent Application, Thomas Alva Edison, September 12th, 1888

Title: [PT032ABE], Patent Application, Thomas Alva Edison, September 12th, 1888
Editor's Notes: Draft (by TAE?) patent application for extracting gold from sulphureted ores. Results in Case 801; Pat. 474,591. Draft claims; no drawings. New process "is based upon the fact that the coating upon the gold [which prevents amalgamation with Hg] may be removed by the application of weak nitric acit, and that at the same time the surface of the gold may be amalgamated if there is added to the weak acid solution a small quantity of a mercurial salt, especially nitrate of mercury." [note in Edison's hand and after claims becomes shorthand of a note to Dyer]
Author: Edison, Thomas Alva
Date: 1888-09-12
Type: Patent Application
Subject: Ore milling (non-iron ore); Chemicals, chemical products, and chemical processes
Folder ID: PT032ABE-F
Microfilm ID: 114:469
Document ID: PT032ABE
URL: https://edisondigital.rutgers.edu/document/PT032ABE
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 114
License: CC0 1.0 Universal

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