| US Patent: 289,817 
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| Boring-machine | 
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| Patentees: |  
 | Frank H. Drummond (exact or similar names) - Bangor, ME |  | Thomas Jenkins, Jr. (exact or similar names) - Bangor, ME |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Jan. 17, 1883 |  
| Granted: | Dec. 11, 1883 |  USPTO (New site tip)
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                        Jeff Joslin
 
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| Description: |  | "Our invention relates to a machine for boring the holes in spool and other similar blocks..." |  |