Abstract: A rice-cleaning machine has a flowing-down friction type rice-cleaning chamber (18) formed around the lower portion of a main vertical rotary shaft (10) a grain sending chamber (79) formed around an upper portion of the main shaft (10) for forcibly sending grains to the rice-cleaning chamber (18), and a rising-up abrasion type rice-cleaning chamber (44) formed around the grain sending chamber (79). Rice-cleaning rolls (15) and (38) of the rice-cleaning chambers (18) and (44) are independently driven to rotate. A grain overflow port at an upper portion of the abrasion cleaning chamber (44) and a grain flowing-in port at an upper portion of the grain sending chamber (79) are communicated through by a connection passage (61). A rice grain supply apparatus consisting of a vertical cylinder body (46) and a vertical spiral (49) are connected to a side portion of the abrasion chamber (44).

Abstract: A pole ballasting device adapted to be positioned about the lower end of one or more poles of a pole-using temporary structure for the purpose of holding the poles. The device includes at least two discrete blocks having, in their assembled condition, one or more common vertically extending through holes for receiving the poles therethrough. The blocks are arranged along planes passing through the through holes. A joining mechanism is provided for separably joining the blocks into a unit. A container is formed in at least one of the blocks and adapted to contain a fluidic load therein.

Abstract: A vertical type impact rice huller which is free from the occurrence of collision of the grain is disclosed.