Improvements in and relating to Scalpers, Graders and Purifiers for the Treatment of Cereals and Cereal Products.

摘要

9817. Craig, A., and Gunnell, W. April 30. Sifting grain, flour, &c.-Relates to a machine for bolting flour, purifying middlings, cleaning cereals, and the like. The sieve casing is suspended by hangers A, and is driven with a gyratory motion by a crank arranged beneath it. Sieves 2, 6, and 9a are arranged in the inclined position shown in Fig. 2, and are provided with bottom boards and outlets, as shown. In the case of flour-milling products, the break stock is fed to the machine at 1. The stock to be returned to the mill is discharged at 16. Fine middlings are discharged at 10, 21, and the coarse middlings at 17. Air is admitted through valved openings at 18, 18a and passes through the sieves 6, 9a, and thence by trunks 5, 8 perforated on their underside to the trunk 14 and fan 15 which discharges the light particles into a dust collector. Flexible connections 12 are employed to join the trunks 5, 8 to the trunk 14. The air current is controlled by valves at 18' and 13. Fig. 3 shows the balance wheel B and crank-pin E for actuating the sieve casing. The wheel B is driven by the shaft H supported in a footstep bearing and driven by a belt pulley. The wheel B is formed with a journal N bearing against blocks K, which can be adjusted by wedges M and screws L to take up wear. The bearing is arranged in a box D. The balancewheel B carries an adjustable weight F to balance the weight of the sieve casing.