Abstract: A rim supporting a tire thereon has facing projecting portions along a mounting rim thereon and one of these portions has a recess fitting a raised portion on an outer peripheral face of one of a plurality of spokes on a spoke assembly on which the rim is designed to be removably secured. The other raised portion aids in balancing the tire and rim and prevents shifting of the rim to avoid an interlocking fit of the raised portion on the spoke assembly within the recess on the rim as it is removably secured on the spoke assembly. While this rim can only be received on the specially designed spoke assembly this spoke assembly is adapted to receive rims in common use which do not have the novel facing projecting portions.

Abstract: A leading self-propelled vehicle with accommodations for passengers is drivable, under the control of an operator, over roadways and has a rearwardly directed portion designed to provide for selective hitching to a trailer adapted to receive and transport self-propelled vehicles accompanying the passengers. A flexible connection can be provided between the leading vehicle and the trailer to provide, in conjunction with a protective cover on the trailer, for streamline flow of air around the trailer.

Abstract: A device in combination with a shower head supplied by water under pressure, which device includes a container for storing a liquid or liquids to be selectively mixed with water delivered from the shower head. A liquid delivery path supplies liquid from the container to a location downstream of a water spray forming portion in the shower head, ths path including a valve arrangement for manual control by the shower head user so as to control the delivery and rate of delivery of the liquid. A mixer disc at the downstream location is adapted to be rotated by water jets formed upstream at the spray forming portion of the shower head. The mixer disc is designed to receive, at a central portion thereof, liquid from the liquid delivery path, the action of the revolving disc being such that any received liquid is flung outwardly into the water spray for intimate mixing therewith.