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US Patent: 820,185
John W. Edmands - Newton Center, MA

USPTO Classifications:
81/119, 81/177.9, 81/DIG8

Tool Categories:
wrenches : wrench components : wrench sockets
wrenches : wrench components : wrench handle components


Rex Wrench Co. - Boston, MA

Thomas B. Booth
Everett S. Emery

Patent Dates:
Applied: Aug. 04, 1904
Granted: May 08, 1906

Patent Pictures: [ 1 | 2 | 3 | 4 ]
John W. Edmands Pat. May 8, 1906
USPTO pdf tiff
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U.S. 820185 in ESPACENET
REX WRENCH (July 1909 ad) (FLICKR)
The patented feature is the connection between the holding member and an adjustable and removable socket member. The wrench handle and removable socket in the drawing are an example of the application of the patent.

The REX ADJUSTABLE SOCKET WRENCH set used this patent. The heads are "crow foot" open end in the set shown in the 2nd image, and sockets in the set shown in the 3rd image.

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