Abstract
Here we propose a husker roller shaping hyperboloid of one sheet of revolution as intermediate method bet ween right cylinder roller whose larger capacity of treatment is inherent, and a motor husker which has husking operation as natural function. The principle employs the slip in the direction ofthe nearest generating straight line caused by preserving an included angle between two roller axes, for husking operation.
When the included angle between two axes is 20°, the diameters are about 76mm, and the slit breadth between two rollers is 3/10-7/10 of thickness of paddy, the slip length is 2.5-3.5mm.
The result of husking test by static loading using these rollers is as follows. When paddy are suppliad in lying state, (it represents standing state in right cylinder roller), the husking ratio reaches 100%, and even in standing state, when the slit breadth is less than 3/10, the ratio also reaches 100%. when 6/10, it reaches about 60%.
The reguired torque of rollers for husking is mainly influenced by the breadth of slit between the rollers. Beside, in our opinion, the greater part of this torque is consumed by inlaying rollers with paddy.
