Advanced science.  Applied technology.

Search

Corner-Cutting Mining Assembly

Abstract: 

A mining assembly includes a primary rotary cutter mounted on one end of a support shaft and four secondary rotary cutters carried on the same support shaft and positioned behind the primary cutters for cutting corners in the hole cut by the latter.

Patent Number: 
4,400,036
Date Of Issue: 
08/23/1983
Inventors: 

John A. Bradley