Abstract: The disclosure relates to a grinding machine which, in the production of toothed belts, grinds the back surface of a molded and vulcanized cylindrical belt material (also called a slab) to finish the belt material thickness to the specified dimension before the belt material is cut into belts of a desired width. The grinding machine includes a rotary support wherein a belt material to be ground is held between a work roll having a large diameter and an idler shaft having a smaller diameter, and is arranged to face a grinding belt over the contact wheel of a belt grinder in such a way that they may be brought towards and away from each other.

Abstract: This disclosure relates to a belt-drive method and apparatus wherein the rotational force of a drive shaft is accompanied by minute fluctuations in the angular velocity, and a driven shaft has rotational inertia. A one-way clutch is provided in the belt drive, which forms a selective interruption of the rotational force transmission through the belt drive while the angular velocity at the drive shaft side is decelerating, the force being transmitted only while the angular velocity is increasing.

Abstract: This disclosure relates to the structure of a roller for hulling rice. The roller comprises a core including a cylinder, a boss section on the interior of the cylinder, and a rubber layer provided on the outer circumference of the cylinder. The cylinder is corrugated and includes alternating furrows and ridges in the axial direction thereof.

Abstract: This disclosure relates to an endless belt comprising a bed of elastic material and a plurality of longitudinally extending tension cords embedded therein. Each of the cords has its ends interconnected to form a junction, and the junctions of the cords are distributed over the length of said belt so that the junctions are longitudinally offset.The disclosure further relates to a process of producing such an endless belt.