sses. From the center of the adapted to the clutching of-a single pulley. When used for second purifier has, at one end, a perforated sheet of iron, two pulleys, it has two wedge-shaped projections formed there- with wire gauze stretched across it, to retain in place the on, placed on opposite… … the projecting rim, I, on the pulley, L. The principal advantage of this method ALLEN’S FRICTION CLUTCH PULLEY The collar, C, is feathered on the shaft so is, however, that by closing the valve, as that it always maintains its relative posi- soon as the spirits passing through it begin sition with…
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