CA Patent: CA-17,940 
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| Pipe Wrench
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	        Patentee:
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 | Henry B. Williams (exact or similar names) - Fremont Centre, MI |  
 
 
 
 
 
| Manufacturer: |  
| Not known to have been produced |  
 
 
 
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        Patent Dates:
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| Granted: | 
Oct. 23, 1883 | 
 
 
 
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		  Patent Pictures:
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WILLIAMS' Pipe Wrench patent no. 17,940 from CANADIAN PATENT OFFICE RECORD  |  
 
CIPO Data Espacenet patent 
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                        Stan Schulz 17,940 in Canadian Patents Database 
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        Description: |  
| Hook jaw pipe wrench with size adjustment accomplished by pivot point for swinging hook jaw held in one of several notches by a leaf spring. 
The DATAMP entry for corresponding U.S. patent no. 275,106 also provides production information, etc. |  
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