Abstract: A method of manufacturing a disc wheel which is of generally Y-shape in cross sections radial of the rotary axis of the wheel, the stem of the Y providing the central disc of the wheel and having holes for the normal wheel bolts or studs, and the bifurcations of the Y providing the wheel rim. The wheel has an annular metal reinforcement having parts located in the stem and in one of the bifurcations of the Y, the reinforcement including holes corresponding to the holes in the finished wheel for the bolts or studs. A covering of plastics material is moulded over the reinforcement, the covering having an integral extension which provides the other bifurcation of the Y. The plastics covering is moulded onto the reinforcement in a mould cavity defined between first and second mould portions which are movable towards and away from one another in directions parallel to the rotary axis of the wheel between open and closed positions.

Abstract: A method of injection moulding a pallet comprising a reinforcement or reinforcing frame provided with an encapsulation of thermoplastic polymeric material, wherein the reinforcement is held in an open mould cavity by vertical projections before the mould cavity is closed and after closure of the cavity is supported in the cavity by horizontal projections whereupon said material is injected into the cavity to encapsulate the reinforcement, the projections subsequently being withdrawn the cavity opened and the pallet removed. The reinforcement or reinforcing frame of the pallet is in the form of two interconnected assemblies of crossed rods.