Blade sharpening system and an edge restoring unit capable of use therewith

Abstract

A knife sharpening system includes a plurality of sharpening units, each performing a different sharpening operation, which are individually mountable on a base for alternate use. One of those units may be a knife edge former which is adjustable to produce edges of preselected different sharpness angles, and which is capable of use independently or as a part of said system.

1 . A blade-sharpening unit comprising a base, a wall extending therefrom, said wall having a slot for receiving a knife blade to be sharpened, and a pair of sharpening elements mounted on said wall to opposite sides of said slot and extending partly over said slot so as to define between them an included angle coinciding with said slot, said sharpening elements being articulately mounted on said wall to be capable of assuming selected different fixed positions on said wall, thereby to produce different included angles, and means for releasably securing said elements to said wall in a desired relevant fixed position, in which said wall has a side surface intersected by said slot, said sharpening elements being pivotally mounted on said side surface, and said side surface is provided with a plurality of stops adapted to be selectively engaged by said sharpening elements in their different relative positions respectively.  
   
   
       2 . The unit of  claim 1 , in which said side surface is provided with a pair of recessed portions, one in each side of said slot, and in which said sharpening elements are mounted within said recessed portions respectively.  
   
   
       3 . The unit of  claim 2 , in which said stops are located in said recessed portions.  
   
   
       4 . The unit of  claim 2 , in which said stops are defined by spaced notches into which parts of said sharpening elements are selectively adapted to be received.  
   
   
       5 . The unit of  claim 3 , in which said stops are defined by spaced notches into which parts of said sharpening elements are selectively adapted to be received.  
   
   
       6 . The unit of  claim 4 , in which said spaced-notches are located to be open to said recessed portions.  
   
   
       7 . The unit of  claim 5 , in which said spaced notches are located to be open to said recessed portions.  
   
   
       8 . A blade-sharpening unit comprising a base, a wall extending therefrom, said wall having a slot for receiving a knife blade to be sharpened, and a pair of sharpening elements mounted on said wall mounted on said wall to opposite sides of said slot and extending partly over said slot so as to define between them an included angle coinciding with said slot, said sharpening elements being articulately mounted on said wall to be capable of assuming selected different fixed positions on said wall, thereby to produce different included angles, and means for releasably securing said elements to said wall in a desired relevant fixed position, said means comprising a plurality of stops adapted to be selectively engaged by said sharpening elements in their different relative positions respectively.  
   
   
       9 . The unit of  claim 8 , in which said wall is provided with a pair of recessed portions, one on each side of the slot, and in which said sharpening elements are mounted within said recessed portions respectively.  
   
   
       20 . The unit of  claim 9 , in which said stops are located in said recessed portions.  
   
   
       11 . The unit of  claim 8 , in which said stops are defined by spaced notches into which parts of said sharpening elements are selectively adapted to be received.  
   
   
       12 . The unit of  claim 9 , in which said stops are defined by spaced notches into which parts of said sharpening elements are selectively adapted to be received.  
   
   
       13 . The unit of claim  10 , in which said stops are defined by spaced notches into which parts of said sharpening elements are selectively adapted to be received.  
   
   
       14 . The unit of  claim 12 , in which said spaced notches are located to be open to said recessed portions.