| US Patent: 460,474 
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| Wrench | 
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| Patentees: |  
 | Otto Knapp (exact or similar names) - Kansas City, MO |  | Charles E. Salisch (exact or similar names) - Kansas City, MO |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Applied: | Aug. 04, 1890 |  
| Granted: | Sep. 29, 1891 |  
 
USPTO (New site tip)| Patent Pictures: |  |  |  | Otto Knapp and Charles E. Salisch patent September 29, 1891 |  Google Patents
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                        Stan Schulz
 
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| Description: |  | This reversible ratchet has the reversing linkage embedded in the handle so the "buttons" to toggle the pawl are adjacent to the hand grip. The head accommodates interchangeable sockets.  The sockets (called "bushes" in the specifications) have spring clips to hold them in the head. |  |