US Patent: 734,329
|
| Adjustable Wrench
|
|
Patentee:
|
|
| Elisha F. Hirst (exact or similar names) - Richmond, IN |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Applied: |
Apr. 18, 1903 |
| Granted: |
Jul. 21, 1903 |
|
Patent Pictures:
|
|
Elisha F. Hirst patent July 21, 1903 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Stan Schulz
|
|
Description: |
| The interior spring creates side pressure to prevent the sliding jaw from moving freely. The rotating toothed spiral cam (which sets in a central slot in the shank) provides a stop to adjust the size of the jaw opening. |
|
