Web spreading roll
AssigneeArcomac S.A.
InventorArmand Demiere
Life of this patent
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Abstract
A web-spreading shaft has a central rod with fixed modules aligned thereon. The modules are trapezoidal-shaped, in lateral view, and are aligned in fixed angular relationship along the rod. The latter is stressed axially and thus takes an arcuate shape, according to the angular relationship of the modules. Rotating cylindrical sleeves are aligned on the thus curved shaft. Means are provided for circulating a lubricating fluid between the rotating sleeves and the shaft.
Claims6
A web-spreading roll, comprising a stationary central rod, a plurality of stationary identical cylindrical modules having a symmetrical trapezoidal-shaped section along their axis, said modules being disposed on said rod in an identical fixed angular position to each other, stressing means disposed at both ends of said rod to impart stress to the rod in its lengthwise direction and to urge said modules together in frictional engagement to each other, thus imparting to said stationary rod with said stationary modules an arcuate shape, the radius of the arc depending on said angular position, a plurality of identical cylindrical sleeves disposed along said modules, means disposed between said modules and said sleeves for permitting rotation of the sleeves around said modules, and means associated with said sleeves for assuring simultaneous and uniform rotation of all sleeves together.
Dependencies are inferred from the claim text.