Title: Cylinder for forming, guiding and/or transporting paper webs or the like

Abstract: The web forming, guiding and/or transferring cylinder in the wire section of a papermaking machine has a deformable foraminous shell which is made of filamentary material and the end portions of which are clamped to rigid rotary ring-shaped end walls. The cylinder surrounds a rigid stationary back support which engages the internal surface of the shell opposite that portion of the external surface of the shell which contacts the web. The back support has grooves and/or ports which convey expelled liquid from the web into a suction chamber for admission into the saveall of the papermaking machine. One of the end walls is movable axially to change the axial tensional stress upon the shell. The back support has a convex external surface whose center of curvature may but need not be located on the axis of the cylinder.

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Inventors: Schiel, Christian (Heidenheim, DT)

Application Number: 743301
Filing Date: 1976-11-19
Publication_date: 1978-02-14
Assignee: J. M. Voith GmbH (Heidenheim, DT)
Primary Class(es): 162/306 162/314, 162/357, 162/369, 162/372, 162/DIG7, 492/7, 492/20
Other Classes:
US Patent Ref:

1714238	May, 1929	Pope	162/306.
1770834	Jul, 1930	Bergeron	162/314.
1949998	Mar, 1934	French	162/357.
2718825	Sep, 1955	Goodwillie	162/306.
3207658	Sep, 1965	Lamb	162/306.
3579422	May, 1971	Minick et al.	162/357.
3853698	Dec, 1974	Mohr	162/358.

Other Refs: 14610661561674

Dec, 1968	DT.
Apr, 1970	DT.

Primary Examiner: Fisher, Richard V.
Assistant Examiner:
Attorney: Kontler; Peter K.