US Patent: 149,641 - Pipe-Wrenches


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US Patent: 149,641

Pipe-Wrenches

Patentee:

Adam Collis (exact or similar names) - Altoona, PA

USPTO Classifications:

81/98

Tool Categories:

wrenches : pipe wrenches

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Applied:	Feb. 21, 1874
Granted:	Apr. 14, 1874

Patent Pictures:

Adam Collis Pat. April 14, 1874

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Description:

The wrench is conceived as a stud or pipe wrench. The hard steel die insert provides the "bite," along with the roughened surface on the end of the handle portion. The screw in the head prevents the head from slipping off the handle.