| US Patent: 129,010 
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| Improvement in Dado-Planes Improved Extension Plane
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| Patentee: |  |
 | Rufus H. Dorn (exact or similar names) - Port Henry, NY |  
 
 
 
 
 
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| Patent Dates: |  
| Granted: | Jul. 16, 1872 |  
 
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| Description: |  | Dorn claims a cutter adjustment mechanism that pivots the blade in a manner to widen and narrow the cut.  Produced during 1872 by Stanley until Traut redesigned the plane 136469 and it was released as the #46 and #47 dado planes.  A very rare Stanley plane. |  |