Sliding-plate extractors

All rotary extractors employ deep beds of solids to be extracted, sometimes as much as two or more meters deep. Hence, rotary extractors are also termed deep-bed extractors. There are several mechanical variations of these extractors. Two variations have already been mentioned. Another variation is where the individual cells have hinged bottoms that swing open whenever the cell is to be emptied. In this variation, the solids slide against a common one-piece bottom that has an opening to allow solids to fall through when extraction is completed. Termed sliding plate. 

Sharp 3 Rifle, Borchardl a Patent model of 187S made by Sharp s Rifle Co., Bridgeport, Conn.)— Plate 3—AAA, receiver BB, slide OC, sear D, firing bolt E, cam F, extractor 0, connection,... 

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