DUSTLESS OAT SEPARATOR AND ZIGZAG.
With two or four Wheat Riddles and Cockle Riddle.
Patented April 9, 1861; Re-issued, April 19, 1871.
This Machine is named “Dustless Separator,” because the Dust is separated from the wheat, conveyed out of the mill, and deposited in a dust room, before the grain passes to the riddles; the wheat and screenings are left free from dust.
Its operation is as follows:—The grain enters the Machine at the hopper, which is shown, where it receives the first blast; then passes through two to four wheat riddles in succession, and over a cockle riddle into the second blast. The riddles deposit oats, sticks, weeds, ergot, rat-balls, etc., in suitable spouts; the heavy screenings fall into a hopper and are spouted off. This Machine has none but suction blasts, and is offered to the milling community as a first-class Separator.
Dimensions and Capacity.
| No. | Capacity per hour. | Size on floor. | Extreme Height. | Pulley. | Rev. per minute. | |
| 2 | 30 to 40 bush. | 33×34 | 5 ft. 4 in | 6 in. | 440 | 2 riddles for |
| 3 | 60 to 80 bush. | 45×34 | 5 ft. 5 in | 6 in. | 440 | winter wheat |
| 2 | 30 to 40 bush. | 33×34 | 6 ft. 2 in | 6 in. | 440 | 4 riddles for |
| 3 | 60 to 80 bush. | 45×34 | 6 ft. 3 in | 6 in. | 440 | spring wheat |
