US Patent: 622,471
|
| Wrench
|
|
Patentee:
|
|
| Frank S. Hollweck (exact or similar names) - Philadelphia, PA |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Applied: |
May 14, 1898 |
| Granted: |
Apr. 04, 1899 |
|
Patent Pictures:
|
|
Frank S. Hollweck patent April 4, 1899 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Stan Schulz
|
|
Description: |
| Screw-adjust "monkey wrench" with a spring and paired levers supporting the base of the adjusting sleeve. Opening the levers allows the movable jaw to retract, thereby enabling "ratchet" type movement. |
|
