US Patent: 100,978
|
| Wrench
|
|
Patentee:
|
|
| Luke Chapman (exact or similar names) - Collinsville, CT |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Granted: |
Mar. 22, 1870 |
|
Patent Pictures:
|
|
Luke Chapman Pat. Mar. 22, 1870 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Stan Schulz
|
|
Description: |
| The "step" supporting the adjusting nut is forged in one piece with the main bar. The movable jaw is formed with a "split back" to wrap around the main bar. The adjusting screw is held in place by a screw through the "step." |
|
