Under the control of a microprocessor first and second motors alternately drive first and second ends of a shear bar for adjusting the position of the shear bar relative to cutter head. The shear bar is adjusted so that it is substantially parallel to the cutter head even though the cutter head and shear...http://www.google.es/patents/US4799625?utm_source=gb-gplus-sharePatente US4799625 - Method and apparatus for adjusting a shear bar relative to a cutter head
Method and apparatus for adjusting a shear bar relative to a cutter head
