US Patent: 186,155
|
| Wrench
|
|
Patentee:
|
|
| Oliver B. North (exact or similar names) - New Haven, CT |
|
|
Patent Dates:
|
| Applied: |
Jun. 14, 1876 |
| Granted: |
Jan. 09, 1877 |
|
Patent Pictures:
|
|
Oliver B. North patent Jan. 9, 1877 with 6 inch example |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Stan Schulz
|
|
Description: |
| This improvement to North's January 11, 1876 patent (no. 172,155) replaces the rack and pawl adjustment with a screw-adjustment. The base for the adjusting screw is slid on to the handle and "crimped" into a notch in the shank casting before the "loop" portion of the handle is expanded.
North's monkey wrenches cite both patents. |
|
