Yarn heating apparatus

Details Yarn heating apparatus Yarn heating apparatus

1979-09-27

1981-03-10

Camby, John J.

Heating

Advancing structure flexing, looping or coiling sheet, web...

165104R, 219540, F27B 928

Patent

active

042551340

ABSTRACT:
A yarn heating apparatus is provided which is adapted for use in a false twist yarn crimping machine or the like. The heating apparatus comprises an arcuately curved heater plate mounted in a generally vertical orientation within a channel in an insulated housing, and having one or more yarn receiving grooves extending along its length. A flat cover is hinged along one edge of the channel, and an insert is mounted on the inside of the cover. The inner face of the insert is curved in conformance with the curvature of the heater plate, such that when the door is closed, the inner face preferably sealably engages the heater plate to define a yarn passage of uniform cross-sectional configuration along the length of the heater plate. During operation of the machine, air rises along the vertically disposed yarn passage as a result of the chimney effect, to carry off the fumes emanating from the heated yarn. The uniform cross-sectional configuration of the passage minimizes heat loss by permitting the laminar flow of such air. Means are also provided for withdrawing the fumes directly from the yarn passage to prevent the same from entering the atmosphere.

REFERENCES:
patent: 2958921 (1950-11-01), Gilchrist et al.
patent: 3395433 (1968-08-01), Kodaira et al.
patent: 3461519 (1969-08-01), Raschle
patent: 3796538 (1974-03-01), Howorth

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