| US Patent: 526,476 
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| Wrench or Clamp Adjustment | 
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| Patentee: |  |
 | William J. Wright (exact or similar names) - Oakland, CA |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Feb. 09, 1894 |  
| Granted: | Sep. 25, 1894 |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | William J. Wright September 25, 1894 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | The primary adjustment is a spring-loaded slide with a tapered tip, that fits into gaps between thin plates in a slot in the shank of the movable jaw.  The end of the spring is both a lifting means, and has a spur that fits into a notch in the frame to hold the adjusting slide in place. |  |