US Patent: 797,538


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US Patent: 797,538

Wrench

Patentee:

Charles C. Spery (exact or similar names) - Rockford, IL

USPTO Classifications:

81/116

Tool Categories:

wrenches : alligator wrenches

Assignees:

None

Manufacturer:

Unknown

Witnesses:

Patent Dates:
Applied:	Jun. 08, 1905
Granted:	Aug. 15, 1905

Patent Pictures:

Charles C. Spery patent August 15, 1905

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Description:

The adjustment means is a screw which slides a cone-shaped wedge in and out between the bases of the swinging jaws of this alligator wrench. A leaf spring between the jaws tends to hold them open.

Visible markings on a known example include "THE CRESCENT" and the patent date.