US Patent: 93,688 - Pipe Wrench


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US Patent: 93,688

Pipe Wrench

Patentee:

William H. Downing (exact or similar names) - Pioneer, PA

USPTO Classifications:

81/95

Tool Categories:

wrenches : pipe wrenches

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Granted:	Aug. 17, 1869

Patent Pictures:

Wm. H. Downing Pat. Aug. 17, 1869

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Description:

The gripping surface is a toothed disk that pivots on an off-center pin. The disk's position in relation to the fixed jaw is adjustable by a bolt connected to a secondary handle.