| US Patent: 180,348 
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| Wrench | 
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| Patentee: |  |
 | Benjamin F. Joslyn (exact or similar names) - Worcester, MA |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Feb. 28, 1876 |  
| Granted: | Jul. 25, 1876 |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | Benjamin F. Joslyn Pat. July 25, 1876 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | A swinging segment on the lower section of the movable jaw can be set to engage or disengage from the adjusting screw. |  |