Fig. 1. shows the construction of a wheel used for bevelling and polishing glass; Fig. 2 shows the wooden wheel in its iron frame. The first wheel is of cast-iron, the second wheel is of clear stone, free from anything that would scratch the glass, and the third wheel is of wood. All the wheels can be made to fix on the same spindle at A, which is upright; the wheels lift off and on, and are fastened down by a collar and a nut. On the iron wheel, which cuts the bevel to the size required, sand is used. The stone wheel is fed with water only, and the wooden wheel, which polishes and finishes the glass, is fed with putty powder. The tray B receives the water and sand which fall from the wheels. The wooden wheel, which must be made of willow, is fitted in sections into an iron frame wheel, moulded to shape; the wood should be about lin. thick, and the sections will hold themselves in place.

Fig. 2.

Wheels for Bevelling and Polishing Glass.