US Patent: 2,531,285 
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| Wrench With Self-Adjusting Jaws
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	        Patentee:
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 | Edward L. Manspeaker (exact or similar names) - Turtle Creek, PA |  
 
 
 
 
 
 
 
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        Patent Dates:
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| Applied: | 
Mar. 08, 1948 | 
 
| Granted: | 
Nov. 21, 1950 | 
 
 
 
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		  Patent Pictures:
	      
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Edward L. Manspeaker Pat. Nov. 21, 1950  |  
 
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                        Stan Schulz 
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        Description: |  
| This self-adjusting locking pliers uses sliding wedges in one handle as the "anchor" for the toggle. This patent together with 2,576,286 and 2,997,903 is cited on the ChannelLock 910 Grip-Lock locking pliers. A 1966 ChanneLLock GripLock 910 ad identifies the tension spring on the tool with this patent.  |  
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