Abstract: A particle blasting machine for deburring articles includes first, second, and third conveyors, first and second positioning elements, particle abrading apparatus and first and second ejecting elements. Articles are automatically ejected from the second conveyor onto the first conveyor and move in contact with the first positioning element. The second positioning element then moves into contact with the article initiating operation of the particle abrading element. The deburred article is then ejected by the second ejecting element onto the third conveyor.

Abstract: In a powder beam etching machine, slopes are formed in upper and lower edge surfaces of a rib formed along an outer margin of a platen and through-holes are formed around four corners. With such an arrangement, the powders adhered work may readily be removed by injection of air during a cleaning operation.

Abstract: A process for removing paint by high pressure waterjet blasting of painted surfaces wherein the waterjet comprises a ferrofluid or other liquid containing tiny magnetic particles suspended therein. The particles may be in colloidal suspension or be suspended by agitation and are preferably polymer coated. The liquid-magnetic particle mixture lends itself to electromagnetic process control, run-off maintenance and waste processing capabilities. Thereby, the process can employ process control and waste remediation options.

Abstract: The invention relates to an injector dosing mechanism (1) for an apparatus, in particular a sandblasting mechanism (30), for dosed addition to a liquid, such as anticorrosive agent, to a stream produced by the apparatus, having a container (2) for taking up the liquid and a connecting pipe (31) leading to the pipe (32) carrying the stream, the apparatus being operated via a switch-on mechanism (33). To permit a constant dosage of liquid without readjustment in a constant or varying air stream or even despite interruption of the air stream, a control valve (17, 18) controlled via a switching mechanism is disposed in the connecting pipe (31), the switching [means] mechanism being coupled with the switch-on [means] mechanism (33) of the apparatus and switching the control valve (17, 18) in accordance with the pulses from the switch-on [means] mechanism.