US Patent: 877,831
|
Auger-Bit
|
Patentee:
|
|
Patrick Joseph Creedon (exact or similar names) - Peterborough, ON Canada |
Manufacturer: |
Not known to have been produced |
|
Patent Dates:
|
Applied: |
Mar. 04, 1907 |
Granted: |
Jan. 28, 1908 |
USPTO (New site tip) Google Patents
Report data errors or omissions to steward
Jeff Joslin (dm)
|
Description: |
Single spiral, solid core bit with a second spiral at the tip claimed to prevent the main cutter from catching while withdrawing the bit. |
|