Bright dipping. A description is given of the equipment used for ‘parkerising’ or bright dipping metals, especially where a series of successive bath treatments occur. The articles are carried in baskets or on conveyors from jigs, and the main concern of the specification is the automatic programming arrangements for such equipment to immerse and remove from the bath liquor the baskets or jig supports after the desired reaction time of immersion for the components.—Brit. Pat. 734,137, Hockley Chemical Co. Ltd., Birmingham.
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