Advancing material of indeterminate length – By fluid current – And web storage
Patent
1989-05-04
1990-05-15
Levy, Stuart S.
Advancing material of indeterminate length
By fluid current
And web storage
226196, B65H 2014
Patent
active
049250779
ABSTRACT:
An arcuate turning guide for a running web over which the running web is floatingly suspended on a cushion of air. The guide has a pair of air nozzle slots positioned transversely and spaced circumferentially apart from one another, the slots being directed toward one another for providing pressurized air to said air cushion. The air slots are defined in part by a nozzle knife which has a sharp nozzle defining edge and also has a heel edge, the guide has a pocket for securely receiving the knife heel edge, and an adjustment is provided for the sharp edge to vary the width of the nozzle slot. The guide has a pair of vane members, one located at each transverse end of the guide, and adjustable means are provided for selectively adjusting said vane members transversely toward and away from one another. The vane members each having an edge dam located adjacent its respective web edge, and the vane members also have inclined and opposed air directing vanes to thereby direct air toward the transverse center of the air cushion. A series of extruded metal, interlocking parts together define the arcuate turning guide to provide the desired degree of wrap of the guide.
REFERENCES:
patent: 3398870 (1968-08-01), Mullan et al.
patent: 4182472 (1981-08-01), Peekna
patent: 4197972 (1980-04-01), Daane
patent: 4282998 (1981-08-01), Peekna
patent: 4342413 (1982-08-01), Reba
patent: 4430012 (1984-02-01), Kooy et al.
patent: 4671676 (1987-06-01), Chen et al.
Daane Robert A.
Helms Randall D.
Advance Systems Inc.
Bowen Paul Thomas
Levy Stuart S.
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