Coating apparatus – Solid applicator contacting work – With work-handling or work-supporting
Patent
1977-04-21
1978-07-18
McIntosh, John P.
Coating apparatus
Solid applicator contacting work
With work-handling or work-supporting
118246, 118DIG20, B05C 108
Patent
active
041008804
ABSTRACT:
Apparatus for the uniform treatment of thread with a treatment fluid during the winding of the thread on a cross-wound bobbin or the like driven at a constant rotational speed while the speed of the thread is increasing constantly, said apparatus comprising a treatment roller, the lower portion thereof dipping into a bath of the treatment fluid, and two thread guides. The first guide is stationary, the second is movable in a direction parallel to the axis of the treatment roller in response to the speed of the thread, the thread being stretched therebetween and lying against the periphery of the treatment roller. The roller, which is driven at a constant rotational speed, has a cylindrical first section and a second section comprised of a plurality of truncated cone surfaces; a plurality of radially disposed and axially extending small passages on the second section forming grooves having a depth of zero at the border of the cylindrical section and increasing over-proportionally to the groove length. In a second embodiment the treatment roller has a cylindrical surface only and a skimmer abutting against said surface. The skimmer is slideable along said surface in response to the increasing speed of the thread, gathering increasingly larger amounts of treatment fluid and acting to concentrate treatment fluid at the thread passing by and being guided by the free end of said skimmer.
REFERENCES:
patent: 1578241 (1926-03-01), Johnson
patent: 1578242 (1926-03-01), Johnson
patent: 2038789 (1936-04-01), Higgins
patent: 2271999 (1942-02-01), Gariepy
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