US Patent: 125,388 
 | 
| Improvement in loose pulleys
 | 
| 
	        Patentee:
		   |  
|
 | Jonathan P. Grosvenor (exact or similar names) - Lowell, MA |  
 
 
 
 
 
 
 
 | 
| 
        Patent Dates:
         |  
| Granted: | 
Apr. 09, 1872 | 
 
 
 
USPTO (New site tip) Google Patents 
			Report data errors or omissions to steward 
                        Jeff Joslin Vintage Machinery entry for J. P. Grosvenor. 
 | 
| 
        Description: |  
| "My invention relates to the construction, inside a loose pulley, of a reservoir for oil or other lubricant, so that the oil will not escape from the pulley while stationary, and while revolving is kept within the pulley and constantly applied to all parts of the bearing by the motion of the pulley." |  
  |