Spring-Loaded Sod Cutter For Vibratory Plow

Abstract

A sod cutting blade pivotally supported on a plow assembly frame such that the sod cutting blade is able to pivot and pass over an obstruction when encountered during a plowing operation. The plow assembly has a spring that is used to bias the sod cutter into the ground.

What is claimed is: 
     
         1 . A system for installing a utility underground, the system comprising:
 a mobile power source comprising a work machine frame;   a plow assembly connected to the power source, the plow assembly comprising:
 an arm pivotally connected to the work machine frame at a first end of the arm; 
 a shaker box connected to a second end of the arm; 
 a plow blade connected to the shaker box; 
 a pivotal sod cutting member supported by the arm between the first end of the arm and the second end of the arm ahead of the plow blade, wherein the sod cutting member has a cutting length less than a length of the plow blade and pivots when the sod cutting member engages an underground obstruction; and 
 a biasing member connected to the sod cutting member and the arm to bias the sod cutting member into a ground surface.