D01BMECHANICAL TREATMENT OF NATURAL FIBROUS OR FILAMENTARY MATERIAL TO OBTAIN FIBRES OF FILAMENTS, e.g. FOR SPINNING crude extraction of asbestos fibres from ores B03B; apparatus for retting D01CAttention is drawn to the note following the title of Class D01In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme. D01B1/00 D01B1/00Mechanical separation of fibres from plant material, e.g. seeds, leaves, stalks D01B1/02Separating vegetable fibres from seeds, e.g. cotton D01B1/04Ginning D01B1/06Roller gins, e.g. Macarthy type D01B1/08Saw gins D01B1/10Separating vegetable fibres from stalks or leaves D01B1/12Rippling D01B1/14Breaking or scutching, e.g. of flaxDecorticating D01B1/16with devices dependent on a bending action to break or loosen fibre-bearing materials crushing rollers D01B1/22 D01B1/18with stamping devices D01B1/20with scraping devices D01B1/22with crushing or breaking rollers or plates D01B1/24with toothed or other pointed devices D01B1/26with beaters rotating about an axis parallel with the fibre bundle D01B1/28with beaters rotating about an axis perpendicular to the fibre bundle D01B1/30Details of machines D01B1/32Feeding arrangements D01B1/34Devices holding fibres or fibre-bearing materials during treatment D01B1/36Conveying devices, e.g. moving bands or ropes D01B1/38Delivery or discharge arrangements D01B1/40Arrangements for disposing of non-fibrous materials D01B1/42employing liquids D01B1/44FrameworkCasingsCoveringsGrids D01B1/46Driving arrangements D01B1/48Drying retted fibres D01B1/50Obtaining fibres from other specified vegetable matter, e.g. peat, Spanish moss D01B3/00Mechanical removal of impurities from animal fibres carbonising rags to recover animal fibres D01C5/00 D01B3/02De-burring machines or apparatus de-burring arrangements forming part of or intimately associated with carding or drafting machines, e.g. burr-crushing rollers, D01G D01B3/025Removing pieces of metal D01B3/04Machines or apparatus for washing or scouring loose wool fibres D01B3/06with circular movement of either wool or liquid D01B3/08with longitudinal movement of either wool or liquid D01B3/10Details of machines or apparatus D01B5/00Hackling or heckling machines hand heckling tools D01G33/00 D01B5/02Details D01B5/04Apparatus for feeding, holding, or conveying materials to or in machines D01B5/06Construction, mounting, or operating features of heckling devices D01B5/08Arrangements for removing, or disposing of, tow or waste D01B5/10Touch pins or other ending devices D01B5/12FrameworkCasingsCoverings D01B5/14Driving arrangements D01B5/16Arrangements for confining or removing dust or the like D01B7/00Obtaining silk fibres or filaments D01B7/02Cleaning or classifying silk cocoons D01B7/04Reeling silk D01B7/06Obtaining silk from cocoons or portions thereof not suitable for reeling de-gumming silk D01C3/02 D01B9/00Other mechanical treatment of natural fibrous or filamentary material to obtain fibres or filaments