US Patent: 1,429,812
|
| Wrench
|
|
Patentee:
|
|
| John Van Horn (exact or similar names) - San Francisco, CA |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Applied: |
Dec. 15, 1921 |
| Granted: |
Sep. 19, 1922 |
|
Patent Pictures:
|
|
John Van Horn patent September 19, 1922 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Stan Schulz
|
|
Description: |
| Screw-adjust pipe wrench with a spring between the adjusting screw and movable jaw. The spring rocks the jaw into gripping position but is not essential to the wrench's operation. |
|
