Inhibiting noise in sheet spreaders

Details Inhibiting noise in sheet spreaders Inhibiting noise in sheet spreaders

1977-03-28

1979-12-04

Schacher, Richard A.

Advancing material of indeterminate length

Processes

By fluid current

226 97, 226197, B65H 1732

Patent

active

041767756

ABSTRACT:
Objectionable noise is inhibited in sheet spreaders of the type wherein strips of a slit traveling web are laterally separated by running the strips over spaced, bowed hollow spreader bars, frictional resistance being alleviated by floating the strips on a layer of air covering the areas of the bars wrapped by the strips. Tendency toward high frequency vibration and thus noise experienced in high speed operation is inhibited by ventilation in the tangency angles between the bars and the running strips.

REFERENCES:
patent: 3122295 (1964-02-01), Davison
patent: 3216638 (1965-11-01), Brickle
patent: 3398870 (1968-08-01), Mullan
patent: 3463377 (1969-08-01), Lucas
patent: 3498515 (1970-03-01), Johnson
patent: 3567093 (1971-03-01), Johnson
patent: 3719316 (1973-03-01), Frye

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