US Patent: 1,155,675 
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| Socket-Wrench
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	        Patentee:
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 | Louis Mueller (exact or similar names) - Cincinnati, OH |  
 
 
 
 
 
| Manufacturer: |  
| Not known to have been produced |  
 
 
 
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        Patent Dates:
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| Applied: | 
Oct. 03, 1913 | 
 
| Granted: | 
Oct. 05, 1915 | 
 
 
 
USPTO (New site tip) Google Patents 
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                        Stan Schulz 
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        Description: |  
| A rotatable barrel holds nested sockets that fit both hex and square nuts.  Spring-loaded stop pins hold the adjustment for the selected socket. A spring-loaded rod and cup at the handle end holds the barrel in line with the frame. |  
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