Anti-digging snow-plow bar

Abstract

An adjustable plow bar for a snow-plow blade, which is fastened to the plow blade to reduce digging into soft road surfaces, includes a bar having two side edges and a front edge substantially equal in length to the length of the plow blade, and mounting posts attached to the upper surface of the bar for mounting the bar to the plow and for adjusting the bar relative to the plow blade. The length of the bar distributes the weight of the plow evenly along length of the blade, and the front edge of the bar is beveled on the underside, which prevents the front edge from digging. Preferably the side edges of the bar also are beveled on the underside thereof, and the composition of the bar includes an abrasion-resistant material, such as tungsten carbide and other hard carbides.

What is claimed is: 
     
         1 . An adjustable plow bar for a snow-plow blade, comprising:
 a bar having two side edges and a front edge substantially equal in length to the length of the plow blade;   mounting means attached to an upper surface of the bar for mounting the bar to the plow; and   means for adjusting the bar relative to the plow blade;   wherein the bar distributes the weight of the plow evenly along length of the blade.   
     
     
         2 . The adjustable plow bar of  claim 1 , wherein the front edge of the bar is beveled on the underside thereof. 
     
     
         3 . The adjustable plow bar of  claim 2 , wherein the side edges of the bar are beveled on the underside thereof. 
     
     
         4 . The adjustable plow bar of  claim 2 , wherein the bar comprises an abrasion-resistant metal, alloy or composite material. 
     
     
         5 . The adjustable plow bar of  claim 2 , wherein the adjusting means comprises one or more spacers engaged with the mounting means. 
     
     
         6 . The adjustable plow bar of  claim 3 , wherein the bar comprises an abrasion-resistant metal, alloy or composite material. 
     
     
         7 . The adjustable plow bar of  claim 3 , wherein the adjusting means comprises one or more spacers engaged with the mounting means. 
     
     
         8 . The adjustable plow bar of  claim 1 , wherein the front edge of the bar is beveled on the underside thereof, the side edges of the bar are beveled on the underside thereof, and the bar comprises an abrasion-resistant material selected from the group consisting of tungsten carbide and other hard carbides.