PREPARATir)X (W ('LAVS. 53 of tiles and pottery ; they can thus in a certain measure take the place of the grindstone apparatus generally used for that work. The extra pieces comprise a lever with counterpoise and an oscillating grating to separate the powder from the large pieces. To increase the… … Fig. 29. — Crushing Cylinders ( foly). of the machine shown in Fig. 30 are arranged in this manner, and so are those of the Whittaker machine (Fig. 31). As shocks are numerous in these machines, automatic belting is used to avoid breaking the gear-wheels ; the move- ment is transmitted by means of…
