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US 4,642,852 AGranted
Dust extractor for drawframe
AssigneeNational Research Development Corporation
InventorsNicholas J. Turner, Geoffrey A. Ogden, Richard S. Bridge
Life of this patent
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AssigneeNational Research Development Corporation
InventorsNicholas J. Turner, Geoffrey A. Ogden, Richard S. Bridge
Estimating the term…
Dust extraction apparatus for a drawframe of the type comprising a pair of table-like creels (3), on each of which are disposed a set of bollards (5) arranged such that multiple slivers of cotton can be drawn in parallel relationship into a set of differential drafting rollers (2), the dust extraction apparatus comprising a plurality of air inlet vents positioned, for example, on each creel table at or around each bollard and at or around each guide-fork (20), and further air inlet vents, for example, at or around each set of differential drafting rollers, each vent being connected to outlet ducting (6, 9, 12) providing substantially constant suction and incorporating a filter adapted to continuously remove particles of dust etc. from the air within the ducting at a substantially constant rate.
Dust extraction apparatus on a drawframe, the apparatus comprising guide means mounted on an axis to cause a change of direction of a sliver and a plurality of individual air inlet vents disposed at a plurality of spaced positions about the drawframe along a sliver path where dust and other pollutant particles may be generated, and connected via outlet ducting to one or more suction and collection means adapted continuously to remove particles from the surrounding air, characterised in that at least some of said air inlet vents are disposed so as to extend along the axis of said guide means so that free access to operating parts of the drawframe is not hindered thereby.
Dependencies are inferred from the claim text.