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US 4,068,357 AGranted
Method and apparatus for fabricating open weave scrim cloth
AssigneeMcDonnell Douglas Corporation
InventorsWilliam B. Goldsworthy, Harald E. Karlson
Life of this patent
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AssigneeMcDonnell Douglas Corporation
InventorsWilliam B. Goldsworthy, Harald E. Karlson
Estimating the term…
A method and apparatus for continuously weaving fibers or filaments, particularly glass fiber filaments, into a scrim cloth, to serve as reinforcement in the fabrication of filament reinforced foam insulation slabs. The scrim cloth consisting of uniformly spaced filaments in the X (longitudinal) direction and Y (transverse) direction is fabricated by traversing the Y filaments between hooks attached to long moveable oppositely spaced side panels and by paying off bands of spaced X filaments at various locations between the Y traversing mechanism. One layer of scrim cloth is fabricated at each station, the desired number of stations for the respective layers being located sequentially along the length of the machine. In fabricating a single layer of cloth at any station, a rotatable vertical tube through which a continuous Y filament is payed from a remotely mounted spool, is moved on a cross slide mechanism transversely back and forth between the hooks on the side panels of the machine, the filament from the lower end of the tube being initially tied to the first hook. The motion of the cross slide and an arm mounted on the rotatable tube orients the Y filament on one hook or set of hooks on one side panel as the cross slide changes direction, and after traversing the distance between the side panels the cross slide and arm on the tube orients the Y filament on an oppositely facing hook or set of hooks on the opposite side panel. The X filaments for each layer are inserted as a band of spaced filaments, each such X filaments moving in the direction of longitudinal side panel travel and resting on the Y filaments.
In apparatus for fabricating open weave scrim cloth consisting of uniformly spaced longitudinal or X filaments, and transverse or Y filaments, the combination comprising transversely spaced parallel longitudinally extending moveable supports, hooks mounted on said supports in oppositely facing relation, and a Y filament or fiber payoff mechanism positioned between said moveable supports, said Y payoff mechanism including fiber dispensing means, support means for said fiber dispensing means, said fiber dispensing means being mounted on said support means, means mounting said support means and said fiber dispensing means for transverse motion between the oppositely facing hooks on said longitudinally extending supports, means for rotating said fiber dispensing means a predetermined amount during transverse motion of said fiber dispensing means from adjacent the hooks on one said longitudinally extending support to adjacent the hooks on the opposite said longitudinally extending support, and fiber support means carried on said fiber dispensing means, to receive a fiber from said fiber dispensing means during rotation and transverse motion thereof between said longitudinally extending supports, and to snap said filament over a hook or hooks on one of said longitudinally extending supports when said fiber dispensing means and said fiber support means are disposed adjacent the hooks on said one of said longitudinally extending supports.
In apparatus for fabricating open weave scrim cloth consisting of uniformly spaced longitudinal or X filaments or fibers, and transverse or Y filaments or fibers, the combination comprising transversely spaced parallel longitudinally extending moveable supports, hooks mounted on said supports in oppositely facing relation, and a Y filament or fiber payoff mechanism positioned between said moveable supports, said Y payoff mechanism including at least one vertically disposed fiber dispensing tube element, tube support means, said at least one tube element being mounted on said tube support means, means for limited transverse motion of said tube support means and said tube element mounted thereon between the oppositely facing hooks on said longitudinally extending supports, means for rotating said at least one tube element a predetermined amount during transverse motion of said tube element from adjacent the hooks on one said longitudinally extending support, to adjacent the hooks on the opposite said longitudinally extending support, and finger means carried on said fiber dispensing tube element adjacent the lower end thereof, said finger means constructed to receive a fiber from the lower end of said fiber dispensing tube element during rotation and transverse motion thereof between said longitudinally extending supports, and to snap said filament over a hook or hooks on one of said longitudinally extending supports when said tube element and said finger means are disposed adjacent the hooks on said one of said longitudinally extending supports.
In apparatus for fabricating open-weave scrim cloth consisting of uniformly spaced longitudinal or X filaments and transverse or Y filaments, the combination comprising a pair of spaced parallel longitudinally extending side panels, hooks mounted on said side panels in oppositely facing relation, and a Y filament or fiber payoff mechanism positioned between said moveable supports, said Y payoff mechanism including at least one vertically disposed fiber dispensing tube, a cross slide member mounter for transverse motion between the oppositely facing hooks on said side panels, means connecting said at least one tube in vertical depending position on said slide member, an offset arm mounted on the lower end of said payoff tube, fingers connected to said arm for receiving a Y filament passing through said tube and fed to said fingers, cam means connected to said at least one payoff tube for rotation of said tube a predetermined amount during transverse motion of said tube from adjacent the hooks on one of said side members to adjacent the hooks on the opposite side member, said Y filament being positioned on said fingers during said rotation of said tube, said fingers carrying said Y filament being in position to snap said filament on the hooks on the respective side panels when said cross slide member reaches the respective opposite remote ends of its transverse motion.
In a process for continuously fabricating open-weave scrim cloth consisting of uniformly spaced longitudinal or X filaments, and transverse or Y filaments, the improvement which comprises traversing said Y filaments between oppositely facing hooks attached to elongated spaced parallel longitudinally moving side panels, paying off each Y filament from a filament dispensing tube transversely moving between said side panels, passing said filament to a filament support device mounted adjacent to said dispensing tube for transverse motion therewith, rotating said filament support device to capture a Y filament thereon from said filament dispensing tube and to position said Y filament adjacent a hook or hooks on one of said side panels when the dispensing tube and filament support device are positioned adjacent the hooks on said one of said side panels, and snapping said Y filament from said filament support device on said hook or hooks.
Dependencies are inferred from the claim text.