Patent for Making White Lead

Résumé du livre

Autograph manuscript dated June 20, 1836, submitted by Edward Clark, an American engineer, granting him a patent for fourteen years that he has invented a new and improved method for the manufacture of metallic salts. Clark was granted a patent on Dec. 4, 1828, which was then canceled on account of defective specifications; the patent was granted again on July 3, 1832, but again canceled due to the same reasons. This is an official United States document bearing the U. S. seal; signed by president Andrew Jackson; John Forsyth as Secretary of State; and B. F. Butler, Attorney General of the United States. The engraving on p. 1 was done by J. N. Throop. Following the first page are two folded pages of hand painted illustrations of Clark's invention done by O. G. Warren. Following that are six leaves of glazed paper, with text written in brown ink, thirty seven lines to a page within a double red frame, explaining the method and specifications used.