Owens-corning Fiberglas Corporation

David W Thomas

Alex P Symborski

Ray M Fulmer

Method and apparatus for forming glass filaments are provided by (a) a plurality of spaced apart forming sections wherein each section is comprised of (i) a feeder adapted to supply a plurality of streams of glass to be attenuated into continuous filaments, a zone being defined by the paths of the free-falling streams, (ii) applicator means laterally spaced from said zone adapted to apply a coating to the advancing filaments, (iii) first guide means laterally spaced from said zone adapted to gather the filaments into a strand, the guide means and applicator being positioned such that the coating is applied to the filaments at a region external to said zone and intermediate the feeder and the first guide means along the path of advancement of the filaments, (iv) secondary attenuation means laterally spaced from the zone adapted to advance the filaments as waste, (b) a single primary attenuation means adapted to simultaneously attenuate the streams from each section into filaments; and (c) second guide means positioned to advance the strands from each section external to all of said zones when the strands are being advanced by the primary attenuation means, said feeders, applicator means, first guide means and second guide means being positioned such that any of said strands are advanced along paths external to all of said zones and in the absence of contact with any other of said strands when any of the waste strands are advanced by the secondary attenuation means.

Method and apparatus for forming glass filaments

Method and apparatus for forming discrete segments of fibrous glass comprises supplying a plurality of streams of molten glass; attenuating the streams into filaments and cutting the continuous filaments into discrete segments by a forming means; positioning a delivery means having a first collection zone and a second collection zone spaced from the first zone to receive said discrete segments; controlling said forming means to operate at a first speed or a second speed slower than the first speed; directing the discrete segments to said first zone when said forming means is operated at said first speed and to said second zone when said forming means is operated at said second speed.

Method and apparatus for forming and collecting discrete fibers and/or

The disclosure embraces a method of and apparatus for distributing linear groups of fibers onto a moving collector which include engaging and advancing groups of fibers by rotating pull wheels, disengaging the groups of fibers from the pull wheels by oscillating and rotating members associated with the pull wheels, oscillating the members by cam-actuated systems of linkage to control disengagement of the groups of fibers from the pull wheels and effect distribution of the groups of fibers on the collector, and applying pressure on the linkage systems opposing the operation of the systems to substantially eliminate lost motion in the linkage systems and thereby promote oscillatory motion accuracy of the fiber disengaging members whereby the collected body of fibers is endowed with substantially uniform characteristics.

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Newark, OH, United States of America

David W Thomas