Textiles: cloth finishing – Expanding device for textile webs
Patent
1991-02-13
1993-03-09
Crowder, Clifford D.
Textiles: cloth finishing
Expanding device for textile webs
26 51, 26 74, 26 78, 19 025, 19268, D06C 306
Patent
active
051916860
ABSTRACT:
Lengthwise stretching machines for thermoplastic synthetic films are equipped with mechanical or opto-electrical devices for detecting a tearing of the film or an accumulation of film on the stretching rollers and for stopping the machine when tearing or accumulation occurs, to protect the stretching rollers. Unallowable loads and possible damage to the roller bearings are avoided by mounting the bearing housings (1, 2) of each roller (3, 4, 5) of a lower roller (7) in the machine frame for cooperation with a force generating device (8) which presses the respective bearing housing (1, 2) toward oppositely located rollers (9, 10, 11) of an upper roller group (12) to an extent permitted by stops (14, 15) rigidly arranged on the machine frame (13). The rollers (3, 4, 5) of the lower group received in the bearing housing (1, 2) can overcome the pressing force of the device (8) to slide in a yielding direction away from the upper rollers, when a roller accumulates film thereon. The rollers should move in the yielding direction so that roller axes remain in parallel to each other. The yielding movement activates a respective mechanically operable electrical limit switch of a plurality of such switches (16, 17).
REFERENCES:
patent: 639492 (1899-12-01), Ashworth
patent: 943944 (1909-12-01), Leach
patent: 1014042 (1912-01-01), Brady
patent: 1668555 (1928-05-01), Freeburg
patent: 2000660 (1935-05-01), Casablancas
patent: 2450738 (1948-10-01), Russell
patent: 2476070 (1949-07-01), Solliday
patent: 2707309 (1955-05-01), Wilson
patent: 2800686 (1957-07-01), Long et al.
patent: 2871519 (1959-02-01), Flint et al.
patent: 3765616 (1973-10-01), Hutzenlaub et al.
patent: 3854646 (1974-12-01), Dortel et al.
patent: 3936915 (1976-02-01), Becker
Eberle Willi
Maierhofer Hans-Juergen
Mueller Adolf
Crowder Clifford D.
Fasse W. G.
Lindauer Dornier GmbH
Vanatta Amy Brooke
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