US Patent: 759,042
|
| Bit-Extender
|
|
Patentee:
|
|
| William B. Swan (exact or similar names) - Seymour, CT |
|
|
Patent Dates:
|
| Applied: |
Jan. 02, 1904 |
| Granted: |
May 03, 1904 |
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward
Jeff Joslin (dm)
|
|
Description: |
| Bits are held in this extension by a toothed lever which engages a corresponding notch in the tang of the bit. The lever is forced into firm contact with the notch by a beveled surface on a threaded nut as it is tightened down against the head of the bit extension. This bit-extension appears in The James Swan Company's 1904 catalogue. |
|
