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US Patent: 611,499
Wrench
Patentee:
Charles Samule Metcalfe (exact or similar names) - Silver City, NM

USPTO Classifications:
81/384, 81/404

Tool Categories:
wrenches : wrench adjustment types : auxiliary levers on wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. Fred. Acker
William P. Goebel
D. A. Shipley
E. B. Moorman
Patent Dates:
Applied: Mar. 15, 1898
Granted: Sep. 27, 1898

Patent Pictures:
Charles S. Metcalfe patent September 27, 1898
USPTO (New site tip)
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Description:
Screw-adjustable jaw with an auxiliary cam-lever to provide extra gripping pressure to the jaw face.

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