Method of making a knife with an oblique bolster

Abstract

The invention relates to a method for producing a knife ( 1 ) with a blade ( 2 ), a bolster ( 3 ) and a handle, in particular a tang ( 4 ), forged from a single piece of flat steel material ( 5 ), wherein, before forging, the flat material ( 5 ) is upset in the region between the blade ( 2 ) and the handle or tang ( 4 ) to form a bead ( 6 ), the longitudinal axis (LW) of which is arranged transversely in relation to the longitudinal axis (LM) of the knife, and is then formed by forging to form a bolster ( 3 ), which has at least one side edge (K 2 ) positioned obliquely in relation to the longitudinal axis (LM) of the knife, wherein the longitudinal axis (LW) of the bead ( 6 ), which later forms the bolster, is oriented obliquely in relation to the longitudinal axis (LM) of the knife ( 1 ).

1 . A method of making a knife with a blade, a bolster, and a handle, from a single flat piece of steel, the method comprising the steps of:
 upsetting the flat piece is upset to form in the region between the blade and the handle a bead whose longitudinal axis extends obliquely to the knife longitudinal axis and thereafter   forging the bead into a bolster that has at least one side edge (K 2 ) extending obliquely to the knife longitudinal axis.   
     
     
         2 . The method according to  claim 1 , wherein the longitudinal axis of the bead forms an of 5° to 60° with the longitudinal axis of the knife. 
     
     
         3 . The method according to  claim 1 , wherein the longitudinal axis of the bead forms an angle of 15° to 35° with the longitudinal axis of the knife. 
     
     
         4 . The method according to  claim 1 , wherein the two side edges of the bead extending transversely to the longitudinal axis of the knife extend parallel to each other. 
     
     
         5 . The method according to  claim 1 , wherein the two side edges of the bead extending transversely to the longitudinal axis of the knife converge toward each other. 
     
     
         6 . The method according to  claim 5 , wherein the two side edges of the bead have a larger or smaller distance from each other in the region of the knife back than at the opposite bead end. 
     
     
         7 . The method according to  claim 6 , wherein the first bead side edge turned toward the knife handle forms a larger acute angle with the knife longitudinal axis than the angle of the second bead side edge turned toward the knife blade. 
     
     
         8 . The method according to  claim 7 , wherein the first bead side edge turned toward the knife handle forms an acute angle of 50° to 90° and the second bead side edge turned toward the knife blade forms an acute angle of 30° to 80° with the knife longitudinal axis. 
     
     
         9 . The method according to  claim 5 , wherein, with upsetting of the bead, the region of the flat piece adjoining the oblique bead side edge is displaced obliquely with respect to the other flat piece region of the bead.