Material can now be scalped, crushed, and simultaneously fed onto the conveyor belt. the latest product from tm engineering combines 3 of our popular machines in to one unit. like our standard jaw crusher over rotary splitter, material is crushed, dispensed onto a conveyor belt, and deposited into a rotating carousel. with the addition of a scalper, material can now be scalped, crushed, and simultaneously.Progress in roll-crushing. by c. q. payne, new york, n. y. on the right, a roll crushers is shown in a sectional elevation of the a-c single-roll crusher while here below is a cutaway view of the machine, with hopper and part of the near side frame removed to show the crushing chamber. the moving elements of the machine consist of the roll, with its supporting shaft and driving gear, and the.