US Patent: 10,666
|
Screw-Wrench
Improvement in Screw or Coach-Wrenches
|
|
Patentee:
|
|
| Dexter H. Chamberlain (exact or similar names) - Boston, MA |
| Manufacturer: |
| Not known to have been produced |
|
|
Patent Dates:
|
| Applied: |
Feb. 18, 1854 |
| Granted: |
Mar. 21, 1854 |
|
Patent Pictures:
|
|
Dexter H. Chamberlain patent March 21, 1854 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Stan Schulz
|
|
Description: |
| The position of the adjustable jaw in this sliding-jaw screw-wrench is held by the wedging action of a split center shank and a tapered center screw tightened and loosened by a knob on the end of the handle.
Collector Don Ervin has constructed one of these just to see how it would work. |
|
