US Patent: 454,222
|
| Wrench
|
|
Patentee:
|
|
| John A. Miller (exact or similar names) - St. Louis, MO |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Applied: |
Oct. 03, 1890 |
| Granted: |
Jun. 16, 1891 |
|
Patent Pictures:
|
|
John A. Miller patent June 16, 1891 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Stan Schulz
|
|
Description: |
| Caliper action jaws; the adjustment held by a set screw on a curved arm. One jaw opening has a fixed set of gripping teeth; the other jaw has a set of gripping teeth pushed into engagement by a spring. The curved arm is held in place by removable plates. The patent also details the form and operation of the removable plates and the set screw and binding plate. |
|
