Abstract: A barrel for use in treating workpieces, such as cleaning, scouring, deburring, etc., with abrasive blasting particles, high pressure fluid jets, etc. The barrel is intended to be rotated and includes a novel spiral flight which pushed workpieces through the barrel, a novel arrangement of drain holes for voiding the barrel of debris such as blast particles, flashings, cleaning fluid, etc., and includes novel turning cleats which cause workpieces to turn over within the barrel to expose various portions thereof to a blast stream of particles or fluid.

Abstract: A substantially horizontally disposed drum is supported for rotation. One end of the drum is adapted to receive lumps of material which are granulated within the drum by abrasive particles which are projected from an abrasive throwing wheel. The drum includes a plurality of apertures through which the granulated material and abrasive particles are removed and subsequently conveyed to a separator for separating the granulated material from the abrasive particles. The apparatus may include a conditioner which scours the granulated material.