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US Patent: 98,698
Wrench
Patentee:
Andrew B. Lipsey (exact or similar names) - New York, NY

USPTO Classifications:
81/163

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Edward Brown
H. James Weston
Arthur F. Sheldon
Patent Dates:
Granted: Jan. 11, 1870

Patent Pictures:
Andrew B. Lipsey Pat. Jan. 11, 1870
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Description:
The combination of left- and right-hand threads provide "double-speed" adjustment

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