Paper making and fiber liberation – Apparatus – Apparatus repair – cleaning or conditioning
Patent
1982-04-29
1983-08-23
Chin, Peter
Paper making and fiber liberation
Apparatus
Apparatus repair, cleaning or conditioning
26 51, 26106, 28142, D21F 700, D06C 306
Patent
active
044002386
ABSTRACT:
An apparatus for processing an endless web includes means for supporting the endless web at a first location and a roll for supporting the endless web at a second location. The roll has first and second ends. First and second carriages are engaged to first and second substantially parallel tracks respectively for rotatably supporting the first and second ends of the roll respectively in a normal operating position and for moving the roll relative to the support means along the tracks. A bridge connects the first and second carriages. Means are mounted to the bridge for lifting the roll at a location between the first and second ends, whereby the roll is supported by the lifting means and the first carriage, whereby the endless web may be inserted or removed over the second end of the roll.
The lifting means includes a cradle for supporting the roll, means for moving the cradle into and out of a position underneath the roll and means for elevating the cradle while the cradle is in the position under the roll. In a first embodiment of the invention, the elevating means comprises an inflatable cushion adapted to be inflated and thereby raise the cradle and to be deflated and thereby lower the cradle. In a second embodiment, the elevating means includes a block adapted to rest on the ground, a first link pivotally mounted to the block and a second link pivotally mounted to the cradle. A pivot joins the other ends of the two links and means are provided for moving the pivot from a first position horizontally displaced from the first ends of the links, wherein the cradle is in a lowered position, and a second position where the pivot means is substantially vertically aligned with the block and the cradle, whereby the cradle is in an elevated position.
REFERENCES:
patent: 4220501 (1980-09-01), Skaugen
patent: 4232435 (1980-11-01), Eriksen
patent: 4256537 (1981-03-01), Stanislaw
Hicks James S.
Stanislaw Peter P.
Chin Peter
Morrison Machine Co.
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