Abstract:
A card wire has consecutive teeth spaced apart in the longitudinal direction by a pitch. The teeth are bounded in the longitudinal direction by a tooth face on a first side and by a tooth back on a second side. Looking downwards in the height direction of the card wire, the tooth face and the tooth back of consecutive teeth merge in a tooth base and, looking upwards in the height direction, form a tooth tip. The tooth depth is defined by the greatest distance, in the height direction of the card wire, from the tooth tip to the tooth base. The ratio of pitch to tooth depth is less than 1.1. An interspace, measured at right angles to a tangent to an inflection point between tooth back and tooth base, between this inflection point and the opposite tooth face is greater than a quarter of the pitch.
Abstract:
Apparatus for making a fibrous web comprises a plurality of carding drums (3, 4, 5, 6), which closely succeed each other in the direction of travel of the feed web and rotate in the same sense. An air-permeable collecting surface is provided, on which the fibers of the feed web are deposited which fly from the carding drums (3, 4, 5, 6). Each carding drum (4, 5, 6) which succeeds another (3, 4, 5) in the direction of travel of the feed web constitutes a worker roller associated with the preceding carding drum. In order to increase the permissible speed of travel of the feed web, an additional worker roller (20) and a clearer roller (21) are associated with each carding drum (3, 4, 5, 6) on that side thereof which is remote from the collecting surface (7).
Abstract:
Processes and apparatus for treating fibrous materials for subsequent processing are described. Such processes and apparatus are able to provide a continuously high throughput, e.g., 400 pounds per hour or more, while achieving an acceptable degree of cleanliness and uniformity with a substantial absence of formation of neps. In a preferred embodiment the fiber treatment unit includes a train of rolls adjacently mounted for rotation about parallel axes. Adjacent rolls rotate in opposite directions and each is provided with a plurality of fiber grabbing, card clothing teeth. A number of additional carding points about the rotating cylinders are provided. Numerous trash removing assemblies adjacent the rotating rolls provide for removal of trash and other dry particles thus preventing escape of such particles into the atmosphere and minimizing health hazards at this and subsequent fiber process stages. In order to achieve the stated objective high capacity, the several rolls are rotated typically at excessively higher than conventional card peripheral velocities.The process and apparatus described may be used to provide a very fine opening, with orientation, and cleaning as one stage in multi-stage cotton fiber total systems which may involve processing from initial greige bale to greige fiber supply package to a finisher card to produce card sliver for yarn spinning, or the output from the very fine opening and cleaning fiber treatment unit may be used for batch kier or continuous chemical cleaning to supply non-woven or yarn spinning operations.
Abstract:
A taker-in under casing in a carding machine is disposed below a taker-in roller and between an under casing for a cylinder and a dish plate so as to extend along a portion of the lower peripheral surface of the taker-in roller. In order to vary the spacing between the taker-in under casing and the dish plate and/or the gauge between the taker-in under casing and the taker-in roller to thereby control the quantity and a quality of substances to be removed at the taker-in under casing, the latter is provided with a device for adjusting the position of the taker-in under casing, which is manually operable at the outside of the carding machine. The adjusting device has a first adjusting mechanism for causing the taker-in under casing to slide along the circumference of the taker-in roller, and a second adjusting mechanism for causing the taker-in under casing to pivot toward and away from the taker-in roller, these mechanisms being operable independently of each other.
Abstract:
A carding machine has a toothed takerin (4a) for taking fibre to be carded from a feed arrangement (3a) to a main carding cylinder (5a). The fibre is conveyed on the lower arc of the takerin, and a substantially rigid, flat plate (10) lies below the lower arc of the takerin. The plate extends across the full width of the takerin and terminates in a free edge facing into the direction of roation of the takerin and substantially parallel to the takerin axis. The free edge is spaced from the tips of the teeth on the takerin by a distance of not more than 5 mm, and the plate lies in a plane that makes an angle of from 75.degree. to 120.degree. to that radial plane of the takerin that intersects the free edge of the plate.
Abstract:
A metallic card clothing for use in a carding machine is produced by digging up at fixed intervals a plurality of regularly spaced projected ridges or one projected ridge formed on one flat surface of a steel strip thereby giving rise to a plurality of serrated component elements having a triangular shape in a plane as viewed in the longitudinal direction of the projected ridges and a lateral shape resembling the teeth of a saw. Owing to the specific shape of the needles formed in the component elements, this metallic card clothing excels in carding action and resistance to wear.
Abstract:
An improved cleaner-opener-comber device for cleaning, opening and combing a fibrous web in a combing machine. The device includes a first and second taker-in mounted on the machine for rotation in a first direction and separated by a separation member. A larger diameter cylindrical drum is cooperatively disposed with respect to the first and second taker-ins for rotation in a direction opposite to the direction of rotation of the first and second takers-in. A plurality of plates having prongs slanted in the direction opposite to the direction of rotation of the cylindrical drum are selectively adjustably mounted proximate the cylindrical drum and allows the fibrous web to pass between the plates and the cylindrical drum for enhanced cleaning, opening and combing of the fibrous web.
Abstract:
A carding device of the large rotating carding drum type including a comber-cleaner assembly particularly well suited for combing and cleaning universal flat cards is provided. The comber-cleaner including a worker roller and a stripper roller mounted for cooperation with the carding drum is disposed between a take-in roller and a card belt. The comber-cleaner assembly includes at least three curved plaque segments disposed over the worker roller for defining at least two channels for positioning at least two extractor blades for improved removal of residual short fibers and other impurities. A control strip deforms the web as it passes from the stripper roller to the worker roller.
Abstract:
Clothing for the cylinder of a card particularly for use with wool and synthetic fibres comprises a stave having pins mounted in it at a density greater than ten pins per square centimetre with each pin projecting from the stave by a length of less than 2 1/2 mm. The length of taper of each pin is greater than the projecting length so that part of the taper is located within the body of the stave thus leading to improved carding of fine denier material.
Abstract:
To reduce the liberation of dust and fly from the taker-in and adjacent areas of a carding machine, the usual taker-in cover is eliminated and a housing means, defining an expansion chamber of substantial volume in open communication with the upper portion of the taker-in, is positioned between the revolving flats, the taker-in feed roll, the taker-in and the main cylinder back plate, and air is continuously exhausted from the taker-in and the expansion chamber to relieve pressure incident to rotation of the taker-in while thereby removing any liberated dust and fly from the chamber.