Apparatus for the production of bulked and crimped yarn
AssigneeJohn Heathcoat & Company Limited
InventorsDuncan Cameron Ferrier, Thomas Berry, Karel Murenbeeld
Life of this patent
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Abstract
Bulked and crimped yarn is produced by a device comprising yarn feed means arranged to form a yarn package, means for taking off yarn from an end of the package and heat exchanging means arranged to be in heat-exchanging relation with the yarn on its way to the package. Means capable of sensing the position of the take-off end of the package is arranged to send a control signal controlling operation of the heat exchanging means. The yarn feed means may be a fluid jet or feed nip rollers. A stuffer tube or a movable surface may be provided to receive the yarn package. The take-off position sensing means may be optical, electrical, acoustical, pneumatic, or mechanical.
Claims18
A device for producing bulked and crimped filamentary yarn of controlled quality, comprising yarn feed means for receiving yarn and propelling it forwardly, means for receiving the yarn and arranging it in a crimped bulked state in the form of an elongated package extending in a direction away from the yarn feed means, variable heat exchanging means arranged in heat exchanging relationship with the yarn, means for taking off bulked and crimped yarn from the end of the package remote from said yarn feed means, means for sensing the position of the take-off end of the yarn package and generating a corresponding take-off signal, and means for receiving the take-off signal and controlling the operation of the heat-exchanging means in conformity with the information contained in the take-off signal so as to determine the quantity of heat exchanged between the heat-exchanging means and the yarn being fed to the package.
A device for producing bulked and crimped filamentary yarn of controlled quality, comprising yarn feed means for receiving yarn and propelling it forwardly, variable heat-exchanging means arranged in heat-exchanging relation with the yarn, means arranged to cause the yarn filaments to separate, thereby bulking the yarn, yarn receiving means arranged to receive the bulked yarn and arrange it in a crimped state in the form of an elongated package extending in a direction away from the yarn feed means, means for taking off bulked and crimped yarn from the end of the package remote from the yarn feed means, means for sensing the position of the take-off end of the yarn package and generating a corresponding take-off signal, and means for receiving the take-off signal and controlling the operation of the heat-exchanging means in conformity with the information contained in the take-off signal so as to determine the quantity of heat exchanged between the heat-exchanging means and the yarn being fed to the package.
Dependencies are inferred from the claim text.