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US Patent: 509,151
Screw Wrench
Patentee:
William Dicks - Buffalo, NY

USPTO Classifications:
81/166, 81/437

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

Assignees:
None

Manufacturer:
Spaulding Machine Screw Co. - Buffalo, NY

Witnesses:
Arthur J. Sangster
James Sangster
H. C. Herr

Patent Dates:
Applied: Apr. 26, 1893
Granted: Nov. 21, 1893

Patent Pictures: [ 1 | 2 ]
William Dicks patent November 21, 1893
USPTO pdf tiff
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Description:
A screwdriver on the end of the adjusting screw extends beyond the end of the handle when the wrench is completely opened.

The wrench also received Canadian patent no, CA-45,875 on April 24, 1894, and British patent GB-189322215 registered Nov. 21, 1893.

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