| US Patent: 651,306 
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| Stay Bolt Wrench | 
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| Patentee: |  |
 | Charles Gabriel (exact or similar names) - Chicago, IL |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Sep. 18, 1899 |  
| Granted: | Jun. 05, 1900 |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | Charles Gabriel patent June 5, 1900 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | The external nut serves only to adjust the gripping cams; the tool is turned by a shank in line with its center. |  |