US Patent 9676563 Transfer apparatus

A long roller conveyor device having a plurality of long rollers and a short roller conveyor device having a plurality of short roller rows each of which includes a plurality of short rollers are used. Rotation axes of the long rollers and rotation axes of the short rollers cross each other. Each of the short roller rows is arranged between the long rollers. On a conveying passage, any of the long rollers and the short roller rows are arranged.