| US Patent: 47,561 
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| Improved lubricator | 
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| Patentee: |  |
 | Leverett Homer Olmsted (exact or similar names) - Newark, NJ |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Granted: | May 02, 1865 |  USPTO (New site tip)
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                        Jeff Joslin
 Vintage Machinery entry for L. H. Olmsted
 
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| Description: |  | The invention is a hollow shaft with a small hole drilled at each pulley location, the hole being covered by a piece of leather that allows the lubricant to slowly wick out. |  |