Jump to Content

Collection Guide
Collection Title:
Collection Number:
Get Items:
Patent petition for gold washing machine, 1849.
MANUSCRIPTSMCII : Box 28 : Folder 12
Collection Overview


Patent petition for gold washing machine, 1849
Gold washing machine patent


Coffin, Edward P., creator


Petition to the [United States] Commissioner of Patents filed by Edward P. Coffin of Nantucket, Massachusetts for a "new and useful improvement in gold washing machines." A 3 -page description of the mechanism is attached to the petition along with a transfer of the rights to this invention from Edward P. Coffin to Willard Sears of New Bedford, Massachusetts. The only date included in these documents is 1849 with no month or day, even though space is provided for month and day in two different places. The year 1849 indicates that this invention might have been inspired by the California gold discovery.


1849 (issued)


Sears, Willard
Gold -- historical and economic aspects
Gold industry -- United States
Gold mines and mining -- Technological innovations
Patents -- Massachusetts


The Edward P. Coffin who filed this patent might have been born in Nantucket, Massachusetts on December 27, 1809, and might have married Lydia B. Gardner in the same city on September 11, 1831.
The Willard Sears who obtained the rights to Edward P. Coffin's invention might have been born in Yarmouth [Massachusetts] on April 2, 1794, might have moved to New Bedford in 1818 and established himself in the tannery business, and might have died there on June 1, 1878.
Gold washing machine patent.
Unrestricted . Please credit California State Library.

Physical Description:

Document in file folder; 14 3/4 x 9 1/2 in.






Copyright Note:

Unrestricted . Please credit California State Library.