| US Patent: 191,761 
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| Carriage Wrench | 
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| Patentee: |  |
 | Eli K. Holley (exact or similar names) - Lockport, NY |  
 
 
 
 
 
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| Patent Dates: |  
| Applied: | May 07, 1877 |  
| Granted: | Jun. 12, 1877 |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | Eli K. Holley Pat. June 12, 1877 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | The jaws have an internal spring which holds them out against the tapered shell which surrounds them. As the adjusting bolt pulls the jaws into the shell, the jaws tighten. A known example has no legible markings. |  |