US Patent: 95,744
|
Wrench
Improvement in Pipe-Wrenches
|
|
|
Patent Dates:
|
| Applied: |
Sep. 11, 1869 |
| Granted: |
Oct. 12, 1869 |
|
Patent Pictures:
[
1 | 2
]
|
|
D.C. Stillson Pat. Oct. 12, 1869 Walworth Mfg. Co Boston, with patent drawing |
USPTO Images
Google Patents
Report data errors or omissions
|
|
Description: |
| Stillson's pipe wrench has teeth on both the fixed jaw and adjustable jaw. The adjusting knurl is housed in a pivoted frame which allows the teeth to grip pipe without "locking." The patent was improved by Stillson in subsequent patents issued Sept. 13, 1870 (no.107,304), and April 30, 1872 (no 126,161), and by C.C. Walworth in 1882 (no. 262,263).
The mechanical principles of this design were used as the basic assumption for a multitude of subsequent pipe wrench designs. |
|
){kind=link}
){kind=link}