| US Patent: 2,536,627 
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| Woodworking machine blade guard | 
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| Patentee: |  |
 | William Copp (exact or similar names) - Guelph, ON Canada |  
 
 
 
 
 
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| Patent Dates: |  
| Granted: | Jan. 02, 1951 |  USPTO (New site tip)
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                        Jeff Joslin
 Vintage Machinery entry for Callander Foundry & Mfg. Co.
 Vintage Machinery entry for Delta Specialty/Delta Mfg. Co./Delta-Rockwell/Rockwell Intl.
 
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| Description: |  | Callander Foundry made the "Beaver" line of machinery; the company was purchased by Rockwell Mfg. Co. in 1953. |  |