| US Patent: 341,207 
 | 
| Metal-turning lathe | 
| 
| Patentee: |  |
 | John R. Back (exact or similar names) - Worcester, Worcester County, MA |  
 
 
 
 
 
 | 
| Patent Dates: |  
| Applied: | Dec. 14, 1885 |  
| Granted: | May 04, 1886 |  
 
USPTO (New site tip)| Patent Pictures:
	      
	        [
			1 | 2
	        ] |  |  |  |  |  Google Patents
 Report data errors or omissions to steward 
                        Joel Havens
 "Vintage Machinery" entry for F. E. Reed & Co.
 
 | 
| 
| Description: |  | Rufus B. Fowler - patent attorney 
My invention relates to the feeding mechanism of a metal-turning lathe; and it consists in the addition of a driving-pulley to the "intermediate gear" usually employed in driving the "leading-screw," from which a rotary motion is given the "feed-shaft" also, in a gear and driving-pulley driven by the intermediate gear, by which a quicker motion is given to the feed-shaft, and in devices for holding the driving-pulleys, whereby a change of gears may be made-and the speed of the feed-shaft varied. |  |