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US Patent: 540,353
Wrench
Patentee:
William Dicks (exact or similar names) - Buffalo, NY

USPTO Classifications:
81/134, 81/177.1

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
James Sangster
Arthur J. Sangster
Harriet Johnson

Patent Dates:
Applied: Aug. 02, 1894
Granted: Jun. 04, 1895

Patent Pictures:
William Dicks patent June 4, 1895
USPTO (New site tip)
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Description:
A spring-loaded pawl at the base of the sliding jaw engages rack teeth on the inner face of one side of the handle to hold the adjustment.

Corresponding Canadian patent no. CA-52,842 was issued July 8, 1896.

According to Ken Cope's "American Wrench Makers 1830-1930" the Spaulding Machine Screw Co. of Buffalo, NY produced this wrench as well as Dicks' more commonly found screw-adjust pocket wrench (pat. no. 509,151).

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