Precision sharpener tool

Abstract

A precision sharpening tool is disclosed, having opposing sharpening elements arranged to form a generally “V” shaped sharpening slot and first and second guide members arranged on opposite sides of the sharpening slot which comprise tensioned spring means arranged to urge a guiding surface against a side of a blade being drawn through the sharpening slot.

1 . A sharpening tool comprising: 
 opposing sharpening elements arranged to form a generally “V” shaped sharpening slot;    a guide member arranged adjacent said sharpening slot, said guide member comprising tensioned spring means arranged to urge a guiding surface against a side of a blade being drawn through said sharpening slot.    
   
   
       2 . The sharpening tool of  claim 1  wherein said guide member comprises a rotatable cylindrical surface which engages a side of said blade.  
   
   
       3 . The sharpening tool of  claim 1  wherein said spring means is selected from bar, flat and leaf spring.  
   
   
       4 . The sharpening tool of  claim 1  wherein said sharpening elements are mounted in a mounting block and said tensioned spring means comprises a flat spring means which is mounted to said block.  
   
   
       5 . The sharpening tool of  claim 1  comprising first and second guide members arranged on opposite sides of said sharpening slot.  
   
   
       6 . The sharpening tool of  claim 5  wherein said guide members are arranged about equidistant from and generally parallel to a bisecting plane of said generally “V” shaped sharpening slot.  
   
   
       7 . The sharpening tool of  claim 1  wherein said sharpening elements are arranged in off-set overlapping opposition.  
   
   
       8 . The sharpening tool of  claim 7  wherein said opposing sharpening elements comprise polygonal plates, arranged so that sharpening edges thereof form the generally “V” shaped sharpening slot.  
   
   
       9 . The sharpening tool of  claim 7  wherein said sharpening elements comprise angled crossing sharpening sticks.  
   
   
       10 . The sharpening tool of  claim 7  wherein a plurality of opposing sharpening elements are generally mounted in interleaved about parallel stacks, forming the generally “V” shaped sharpening slot.  
   
   
       11 . The sharpening tool of  claim 1  wherein the vertex angle of the of said generally “V” shaped sharpening slot, is from about 35 degrees to about 45 degrees.  
   
   
       12 . The sharpening tool of  claim 11  wherein said guide member supports a knife blade along about the bisect plane of said generally “V” shaped sharpening slot.  
   
   
       13 . The sharpening tool of  claim 3  wherein said guide member comprises a mounting post having a spring tensioning means mounted thereto arranged to urge a guiding surface against a side of a blade being drawn through said sharpening slot.  
   
   
       14 . The sharpening tool of  claim 13  wherein said spring tensioning means comprises a bar spring having a guiding surface arranged to engage a side of a blade being drawn through said sharpening slot.  
   
   
       15 . The sharpening tool of  claim 14  wherein said guiding surface comprises a rotatable cylindrical surface which engages a side of a blade being drawn through said sharpening slot.  
   
   
       16 . The sharpening tool of  claim 14  wherein said spring tensing means comprises a leaf spring.  
   
   
       17 . A sharpening tool comprising: 
 a mounting block, comprising slots arranged for mounting opposing sharpening elements comprising overlapping rectilinear plates having sharpening edges arranged in a generally “V” shaped sharpening slot arrangement;    first and second guide members arranged adjacent said sharpening slot, said guide members comprising tensioned spring means arranged to urge a guiding surface against a side of a blade being drawn through said sharpening slot;    wherein said tensioned spring means is selected from flat, bar and leaf flat spring means.    
   
   
       18 . The sharpening tool of  claim 17  wherein said guide member comprises a flat spring tensioning means mounted to said mounting block adjacent said generally “V” shaped slot, said flat spring being arranged to urge a guiding surface thereof against a side of a blade being drawn through said sharpening slot.