| US Patent: 487,775 
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| Duplex feed mechanism | 
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| Patentee: |  |
 | Francis H. Richards (exact or similar names) - Hartford, CT |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Mar. 25, 1892 |  
| Granted: | Dec. 13, 1892 |  USPTO (New site tip)
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                        Jeff Joslin
 
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| Description: |  | The invention is a two-speed feed mechanism. Francis Richards was a professional inventor. and we could not determine who Walter Wood was. |  |