Drying cylinder for a paper making machine

Details Drying cylinder for a paper making machine Drying cylinder for a paper making machine

1976-05-05

1978-07-18

Sprague, Kenneth W.

Drying and gas or vapor contact with solids

Apparatus

Rotary drums or receptacles

34119, 34125, 165 89, F26B 1102

Patent

active

041006836

ABSTRACT:
The internal ribs of the drying cylinders are formed with cross-sections which are of parabolic shape or substantially parabolic shape in order to obviate any additional thermal stressing of the cylinder. The rib cross-sections are each situated in a zone bounded outwardly by a hexagon which consists of a rectangle of full rib width and a height equal to 0.75 times the rib height and an adjoining trapezium having a width 0.65 times the maximum rib width at the top of the rib and inwardly by a pentagon of a width of 0.7 times the full width at mid-height of the rib and an apex at the maximum height of the rib.

REFERENCES:
patent: 1453113 (1923-04-01), Hutchins
patent: 3367042 (1968-02-01), Cox, Jr.
patent: 3659349 (1972-05-01), Nykopp

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