Advancing material of indeterminate length – By fluid current – And web storage
Patent
1980-06-10
1982-07-06
McCarthy, Edward J.
Advancing material of indeterminate length
By fluid current
And web storage
226196, B65H 1732
Patent
active
043378854
ABSTRACT:
Apparatus for guiding tape is disclosed wherein the tape is guided over a gaseous cushion at a guiding surface mounted relative to a reference surface with means urging the tape along the guiding surface against the reference surface. In one embodiment the urging means is the provision of the guiding surface and the reference surface positioned at a slight angle, in the range of from 5' to 30' and preferably 10' from normal so that the surfaces are positioned at an acute angle. The guide member can have the outside surface of an inverted frustum of a cone. In addition the guide member may include at least one sidewall of a vacuum column. Instead of the provision of a slight angle to urge the tape against the reference surface the apparatus can be constructed to provide a gaseous cushion between the guiding surface and the tape thicker at a location remote from the reference surface than adjacent to the reference surface. Means are provided for controlling the temperature of the gaseous stream to control the temperature of the tape. The guide member can comprise a pair of spaced apart cassette face members for guiding the tape loop pulled from a cassette to a tape head.
REFERENCES:
patent: 3078022 (1963-02-01), Durbeck
patent: 3087664 (1963-04-01), Streeter
patent: 3270933 (1966-09-01), Dekker
patent: 3347437 (1967-10-01), Rush
patent: 3420424 (1969-01-01), Barbeau
patent: 3984039 (1976-10-01), Hawley
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