Tension control for continuous lengths of textile material
AssigneeWest Point Pepperell, Inc.
InventorRobert F. Hackney
Life of this patent
Estimating the term…
Abstract
Apparatus for leading long lengths of woven or nonwoven textile material over a series of rolls in a sinous path in which the rolls are arranged in upper and lower tiers and some of the upper rolls are driven from electric motors. The lower tier of rolls is supported by parallel beams which are pivoted at one end. At their other ends the beams are connected by a chain and sprocket connection to a motor-speed-control device which automatically adjusts the speed of certain rolls to maintain constant tension on the material along its path through the apparatus, when the material causes the bottom rolls to move up or down.
Claims30
Apparatus for leading long lengths of woven or nonwoven textile material over a series of rolls in a sinous path comprising a series of parallel horizontal rolls arranged in upper and lower tiers,
- means mounting the rolls of the upper tier rotatably in spaced stationary positions,
- separate means at opposite ends of the lower tier supporting the rolls of the lower tier as a group in horizonatally spaced positions,
- means pivotally mounting said separate supporting means at one end for movement separately when the tension of the passing material tends to vary,
- electric motor-driven means to rotate at least one of the upper tier of rolls,
- means to control the speed of said motor-driven means,
- means transmitting the motion of either of said separate supporting means to said control means for automatically controlling the speed of said driven means in response to variations in the tension of said material as it passes through the apparatus.
Apparatus for leading long lengths of woven or nonwoven textile material over a series of rolls in a sinuous path comprising a series of parallel horizontal rolls arranged in upper and lower tiers,
- means mounting the rolls of the upper tier rotatably in spaced stationary positions,
- a pair of independent parallel beams supporting the rolls of the lower tier as a group at opposite ends in horizontally spaced positions,
- means separately mounting said beams at one end about fixed pivots for movement separately when the tension of the passing material tends to vary,
- electric motor-driven means to rotate at least one of the upper tier of rolls,
- separate chain and sprocket means connected to the free ends of said beams,
- a transverse shaft connecting said sprocket means for rotation thereof in unison,
- means operated by said shaft to control the speed of said elctric motor-driven means in response to variations in the tension of the material as it passes through the apparatus.
Dependencies are inferred from the claim text.