disk-wheel

Century Dictionary and Cyclopedia

1. n. A worm-wheel in which a spiral thread on the face of the disk drives a spur-gear the space of one tooth at each revolution, the shafts of the disk and gear being at right angles to each other.
2. n. A type of wheel for cars or motor-vehicles in which the hub is connected to the rim by a continuous web or plate, instead of by spokes with open intervals between. Such wheels appear to be solid disks. In car-wheels of this pattern the plates are of steel, bumped or dished to give lateral stiffness; or the plate is double with compressed card-board between. In motor-vehicles the disk is of thin steel, concaved to give elasticity by slight flexure of the plate under shock. Such wheels at high speed raise less dust than spoked wheels, and do not hum in moving through the air.