US Patent: 647,937 - Pipe Wrench


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US Patent: 647,937

Pipe Wrench

Patentee:

Porte M. Bradley (exact or similar names) - Cripple Creek, CO

USPTO Classifications:

81/105, 81/185.2, 81/DIG.6

Tool Categories:

wrenches : pipe wrenches

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Applied:	Jan. 20, 1900
Granted:	Apr. 24, 1900

Patent Pictures:

Porte M. Bradley patent April 24, 1900

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Description:

The patented features include the angled jaw on the main shank, the spring that pushes the movable jaw toward the fixed jaw, the circular "block" for the adjusting nut, and the circular enlargement for that "block."