Abstract: A process and apparatus for processing flat workpieces, in particular for carrying out operations between fabric pieces in superposed relationship, feeding the workpieces to a continuously operating workstation by pre-conveyors that cooperate with subsequent conveyors. The pre-conveyor and each subsequent conveyor are so arranged that, upon starting the pre-conveyor with a workpiece on its conveyor path, the conveyor path of the pre-conveyor is extended over the conveyor path of the subsequent conveyor to such an extent that the workpiece can be moved over the conveyor path of the subsequent conveyor. When that position is adopted, the conveyor belt of the pre-conveyor is stopped and the workpiece is deposited on the conveyor belt of the subsequent conveyor by shortening the path of the pre-conveyor.

Abstract: In a system for aligning a wheel employing means for generating electrical signals indicative of camber, toe and the rotational position of the wheel when the camber and toe readings are sensed employs an improved sensor assembly for generating the toe readings. The same sensor assembly can also be used with respect to providing a reference with respect to certain rear wheel relationships.

Abstract: A wheel mounting assembly for a tire balancing machine of a type for rotating a wheel with a tire mounted thereon includes an annular support plate arranged to be mounted for rotation by the machine. The support plate carries means for simultaneously moving a plurality of studs uniformly between first and second radial positions defined about the axis of rotation of the support plate. The foregoing means includes a central gear disposed on the axis of rotation of the support plate. A plurality of satellite gears corresponding in number to the number of the studs needed for support of a given wheel are disposed about the axis of rotation of the plate in engagement with the central gear. The studs are carried on means supported from each satellite gear so as to revolve about the axis of rotation of the satellite gears whereby rotation of one of the satellite gears serves to rotate the others to the same degree via the central gear so as to move all studs simultaneously from the first to the second position.