| US Patent: 310,019 
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| Combined Wrench and Gage For Gas Service-Pipe Cocks | 
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| Patentee: |  |
 | Alfred G. Bayles (exact or similar names) - New York, NY |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Mar. 25, 1884 |  
| Granted: | Dec. 30, 1884 |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | Alfred G. Bayles patent December 30, 1884 |  Google Patents
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| Description: |  | "The slotted handle of the wrench is provided with a scale of division marks, so that the adjustable gage-pin can be readily set to prevent the cock from being opened beyond a fixed point." |  |