US Patent: 121,372 - Improvement in Wrenches


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US Patent: 121,372

Improvement in Wrenches

Patentee:

Henry A. Hyle (exact or similar names) - Shamburg, PA

USPTO Classifications:

Tool Categories:

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Granted:	Nov. 28, 1871

Patent Pictures:

Henry A. Hyle Pat. Nov. 28, 1871

Description:

The hook jaw has two pivot points to adapt to a range of sizes, and a set screw limit stop to avoid crushing smaller pipe.