| US Patent: 134,250 
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| Improvement in loose pulleys | 
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| Patentee: |  |
 | Wilson W. Carey (exact or similar names) - Lowell, MA |  
 
 
 
 
 
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| Patent Dates: |  
| Granted: | Dec. 24, 1872 |  USPTO (New site tip)
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                        Jeff Joslin
 Vintage Machinery entry for W. W. Carey
 
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| Description: |  | "The principal object of my invention is to render the pulley what is termed a self-lubricating one, it containing a reservoir for holding oil, such reservoir having one or more or a series of educts, each of which contains a reservoir for holding oil, such reservoir having one or more or a series of educts, each of which contains or is to contain a strainer consisting of a plug of leather, or other suitable material, such as will not only serve as a filter or strainer, but as a means of slowly delivering the oil or lubricating fluid upon the revolving shaft of the pulley while the latter may be in revolution." |  |