Abstract: The caster wheel includes a swivel housing connected to a transportation apparatus such as a shopping cart and supporting a transverse shaft and a downwardly directed braking bracket terminated with a transverse braking shoe. Two separate wheel discs are respectively supported for rotation on the shaft and are slidably interconnected along their periphery by snap-in annular grooves and tongues. Each wheel disc is provided with a radially directed guiding ring which is adapted for engaging a guiding groove on a conveyor belt.

Abstract: A caster for furniture and the like has a ground-engaging rolling member, an upright mounting fork which rotatably mounts the rolling member and a support element which projects upwardly from the mounting fork and is formed with an upright passage. A mounting arrangement mounts the fork on the support element so that the fork can turn about an upright axis, and a pin is longitudinally shiftable in the passage of the support element between a plurality of positions. An arresting arrangement serves to arrest the fork against turning about the upright axis, and includes a first set of teeth provided on the support element and a second set of teeth provided on the pin. These teeth extend parallel to the upright axis and are engageable with one another in dependence upon the position of the pin in the passage to prevent turning of the fork about the upright axis when they are in such engagement.