US Patent: 543,665
|
| Pipe Wrench
|
|
Patentee:
|
|
| Edward Wright (exact or similar names) - Worcester, MA |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Applied: |
Dec. 03, 1894 |
| Granted: |
Jul. 30, 1895 |
|
Patent Pictures:
|
|
Edward Wright patent July 30, 1895 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Stan Schulz
|
|
Description: |
| Improvement to Wright's October 3, 1893 patent (no. 505,869) to add replaceable toothed gripping surfaces for pipe and rods, and an alternate gripping sleeve for smooth finish pipe. Holes in the adjusting nut allow for insertion of small lever handles, and the action of the lever handle alternately tightens and releases the jaw grip once the size has been set by the screw adjustment.
Production versions of Wright's pipe wrench cite the October 3, 1893 patent. |
|
