81 yrs of Classifying History: F Class Vibrating Screen
11/04/2017· Haver Boecker, formerly W.S. Tyler, invented the Ty Rock, the first vibrating screen with four bearing technology, in 1935. Years of innovation perfected this machine into what is known today as the Tyler F Class. Even after 70 years of operation, the classic F Class design still remains an important part of an aggregates operation.



































