| US Patent: 181,693 
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| Improvement in Cant Hooks | 
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| Patentee: |  |
 | William A. Lloyd (exact or similar names) - Cheshire, MA |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Jun. 06, 1876 |  
| Granted: | Aug. 29, 1876 |  USPTO (New site tip)
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                        Russ Allen.
 
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| Description: |  | A spiral spring is used to assist in forcing and holding the dog into the log.  Mr. Lloyd references Schult's patent, No 94,038 which uses a flat spring. |  |