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US Patent: 390,422
Wrench
Patentee:
Oscar C. White (exact or similar names) - Wichita, KS

USPTO Classifications:
81/166, 81/77

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
C. Sedgwick
John M. Deemer
Arthur R. Allen
Alva J. Applegate
Patent Dates:
Applied: May 02, 1888
Granted: Oct. 02, 1888

Patent Pictures:
Oscar C. White patent October 2, 1888
USPTO (New site tip)
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Description:
Adjustable box end wrench; one end for square nuts and the other end for hexagonal nuts.

Ken Cope's "American Wrench Makers 1830-1930" lists White as producing the wrench, based on a SCIENTIFIC AMERICAN notice of the patent.

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