Our Sister Company Sifter Parts & Service Inc. is the current manufacturer of the model CS-1 gyratory sifter, formally known as the Allis Chalmer, Ferrell Ross, or Blunt gyratory sifter. The CS-1 Sifter is an all metal machine capable of providing from one to four separations of any dry product from 1/4 inch down to 400 mesh. The gyratory motion of the sifter provides a passive, gentle screening while keeping the product in contact with the screen at all times for maxi-mum capacity. The sifter has the ability to screen up to 50,000 pounds per hour. The CS-1 can provide from 10 square feet of screening surface up to 35 square feet all in a 4′ x 4′ foot- print.