Web spreader and guide

Details Web spreader and guide Web spreader and guide

1978-03-24

1979-02-20

Fisher, Richard V.

Paper making and fiber liberation

Apparatus

Automatic control

74241, 162273, 162275, D06C 306, D21F 132, D21F 136

Patent

active

041405749

ABSTRACT:
A web spreading and guiding device to maintain a running paper sheet making foraminous web comprising a wire or pick-up felt transversely taut and straight running in a papermaking machine, has a pair of free running pneumatic tires having their treads in nipping relation to one another to engage a margin of the web in the nip, the tires being carried by an arm which is pivotally biased to effect transverse web stretching bias of the tires on the web margin running through the nip. Generally one of the devices will be mounted to act on one margin of the web and another of the devices on the opposite margin of the web and the devices being cooperatively biased to stretch the web in opposite directions. Means are provided to control the tire bias for correcting any deviations of the web from a straight running path.

REFERENCES:
patent: 2530122 (1950-11-01), Hornbostel
patent: 2635475 (1953-04-01), Hornbostel
patent: 2718156 (1955-09-01), Wright
patent: 2752657 (1956-07-01), Meneo
patent: 2772879 (1956-12-01), Lorig
patent: 2801102 (1957-07-01), Walter et al.
patent: 3310210 (1967-03-01), Reib
patent: 4007865 (1977-02-01), Crandall

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