US Patent: 68,168
|
| Improvement in Wrenches
|
|
Patentee:
|
|
| Theodore D. Christopher (exact or similar names) - Madison, IN |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Granted: |
Aug. 27, 1867 |
|
Patent Pictures:
|
|
Theodore D. Christopher Pat. Aug. 27, 1867 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Stan Schulz
|
|
Description: |
| A swinging catch-bar on the back side of the base of the movable jaw allows for quick adjustment. The screw-adjust portion of the movable jaw allows for final close adjustment.
An Oct 5, 1867 SCIENTIFIC AMERICAN write-up describes two alternate wrench forms based on this patent. |
|
