US Patent: 563,040


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US Patent: 563,040

Vise

Patentee:

Charles J. Jackson (exact or similar names) - Erie, PA

USPTO Classifications:

269/268, 269/279

Tool Categories:

work holding : vises : pipe and chain vises

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

C. L. Belcher

Charles M. Catlin

Patent Dates:
Applied:	Nov. 02, 1895
Granted:	Jun. 30, 1896

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Carl Matthews
"Vintage Machinery" entry for Jackson Vise & Tool Co.

Description:

The innovation is improved gripping surfaces on the vise jaws, created by using multiple strips of steel that can each be reversed to expose a fresh edge. See also Canada patent CA-51,964, and US patent 631,013 that addresses a shortcoming of this jaw design where the strips can fall out even when originally tightly clamped.