US Patent: 850,900
|
| Wrench
|
|
Patentee:
|
|
| Michael Boynton (exact or similar names) - Hoboken, NJ |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Applied: |
Jun. 05, 1906 |
| Granted: |
Apr. 23, 1907 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Stan Schulz
|
|
Description: |
| Chandler & Chandler - patent attorneys
It is well understood that in pipe-wrenches it is necessary to secure such a firm hold upon the pipe operated upon that it can be turned or screwed up and at the same time the action must be such as to rotate the pipe and not to crush it between the jaws. Again, the wrench must be so constructed that a reverse movement of the handle will cause the jaws to "let go" the pipe and not to hold on to it. It is the object of the present invention to provide improvements in a pipe wrench whereby the jaws may be set on the pipe so as not to slip thereon in the work of turning it " up " and to let go the instant the handle of the wrench is moved in the opposite direction.
|
|
