Abstract: Some elevator buckets 1, 11, 21, 31, 41 have aperture orifices 2, 3, 4, 12, 22; 42, 43, 44, 52. Traditionally, these aperture orifices are formed by drilling a solid bucket wall but by provided aperture features 12?, 13?, 52? in a moulded bucket with some already moulded aperture orifices then some markers or pre-cursors for aperture orifices are provided and provision of elevator buckets is more efficient with aperture orifices.

Abstract: A railroad car wheelset has an axle with one wheel rigidly attached as in conventional railroad practice. This wheel is permitted to rotate by journal bearings either on the extreme ends of the axle or inboard of each wheel location. At the location of the other wheel, the axle is provided with a smooth surface and a self-lubricating bearing is provided as a part of a hub on the axle. The axle shaft is provided with a boss for preventing the independently rotating wheel from migrating laterally out of proper alignment. A self-lubricating thrust bearing is located between this boss and the side of the wheel to eliminate any possible galling between the two moving surfaces. A removable retainer plate is located on the other side of the independently rotating wheel to prevent the wheel from moving laterally in that direction.

Abstract: A rubber member for rubber-elastic rail wheels which in the expanded state has an oval opening for receiving a flexible current bridge. When the rubber member is incorporated in the rail wheel, the opening assumes a substantially circular cross-section under prestressing.