| US Patent: 79,012 
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| Improvement in Augers | 
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| Patentee: |  |
 | Nathaniel C. Sanford (exact or similar names) - Meriden, CT |  
 
 
 
 
 
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| Patent Dates: |  
| Granted: | Jun. 16, 1868 |  
 
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| Description: |  | "This invention consists in forming an auger with two or more cutting-lips, commencing from the first or usual cutting-lip, and passing around the last turn or twist of the helical part of the auger, and each successive lip being at a greater distance from the axial centre of the auger than the preceding, and in a different horizontal plane, whereby the paths of the several lips are different and distinct, and the auger may be operated more easily." |  |