US Patent: 1,132
|
| Vise
|
|
Patentee:
|
|
| John Wetherell (exact or similar names) - Allegheny, PA |
|
|
Patent Dates:
|
| Granted: |
Apr. 22, 1839 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Carl Matthews
John Wetherell vise on toolarchives.com
|
|
Description: |
| The toolarchives.com site has photos of a vise that matches this patent, and is marked "JOHN WETHERELL" and "PITTSBURGH".The patented feature of the vise is a pair of pins protruding from below each jaw, and facing away from the opposite jaw, that fit into recesses in the screw nuts, which are made separate from the jaws. This arrangement allows some play in the mechanism so that the jaws can accomodate the angular movement created by the one jaw moving in an arc around the pivot pin rather than in a parallel motion. |
|
