Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 27,090
Improved Mode of Constructing Screw-Wrenches
Albert C. Richard - Newtown, CT

USPTO Classifications:

Tool Categories:
wrenches : nut wrenches
wrenches : wrench adjustment types : screw adjust wrenches


Not known to have been produced

David Sanford
Hugh Campbell

Patent Dates:
Granted: Feb. 07, 1860

Reissue Information:
Reissued as RE4,450 (Jun. 27, 1871)

Patent Pictures:
Albert C. Richard Pat. Feb. 7, 1860
USPTO pdf tiff
Google Patents
Report data errors or omissions
The adjusting screw is located at the back of the adjustable jaw, close to the head of the wrench. This A.C. Richard patent was sold to Coes, but was not produced. It is cited in John H. Coes' Dec. 28, 1875 patent (no. 171,550).

Herb Page mentions this Richard patent in relation to A.G. Coes' wrench production on pg. 64 of "The Brothers Coes and Their Legacy of Wrenches." (2005) It is prominently cited in an A.G. Coes & Co. advertisement in the 1872 Worcester City Directory, along with 52,968 and 114,505. The aspect used is the wrench bar enlargement in the portion nearest the head.

Copyright © 2002-2018 - DATAMP