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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:
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"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.

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