Apparatus for cooling calender rolls and the like

Details Apparatus for cooling calender rolls and the like Apparatus for cooling calender rolls and the like

1993-02-01

1994-03-01

Gerrity, Stephen F.

Presses

Coil tightener and binder

34 54, 34114, 100 99, 100161, 162262, 162263, 162361, 162375, 374153, B30B 1534, B30B 304, D21G 100

Patent

active

052897664

ABSTRACT:
Apparatus for cooling the end portions of a calender roll which has an elastic layer adjacent its peripheral surface and wherein the central portion of the peripheral surface is overlapped by a running web of paper or other material when the calender is in use. The width of the non-overlapped portions of the peripheral surface of the roll varies when a web having a first width is followed by a web having a different second width. This could lead to damage to the roll at the non-overlapped portions of the peripheral surface as a result of overheating by an adjacent rotary component of the calender. The end portions of the roll are cooled by discrete adjustable cooling devices which are movable along the respective non-overlapped portions of the peripheral surface in parallelism with the axis of the roll and each of which shares movements with a monitoring device which is to be maintained in a selected position relative to the adjacent marginal portion of a running web. To this end, the monitoring devices transmit signals to discrete reversible motors which move the monitoring devices along the respective non-overlapped portions of the peripheral surface and are brought to a halt when the monitoring devices assume their selected positions.

REFERENCES:
patent: 1253298 (1918-01-01), Temple et al.
patent: 1714261 (1929-05-01), Egan et al.
patent: 3203678 (1965-08-01), Sawyer et al.
patent: 3239618 (1966-03-01), Sengel
patent: 3254593 (1966-06-01), Beachler
patent: 3257938 (1966-06-01), Goyette
patent: 3489344 (1970-01-01), Keyes, IV
patent: 4114528 (1978-09-01), Walker
patent: 4644667 (1987-02-01), Yanagi et al.
patent: 5028145 (1991-07-01), Borkenhagen et al.

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