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Fabric alignment method and machine

  • US 4,261,498 A
  • Filed: 09/17/1979
  • Issued: 04/14/1981
  • Est. Priority Date: 09/17/1979
  • Status: Expired due to Term
First Claim
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1. Apparatus to correct the alignment of a web of material having a plurality of rows of ferrous containing markings on the back thereof comprising:

  • a frame, a plurality of input rolls, a plurality of output rolls, each of the input rolls having a corresponding output roll, means to drive the corresponding input roll and output roll in synchronism, means to supply the web of material to said input and output rolls, means to drive each set of corresponding input and output rolls separate from the drive of the other sets of corresponding input and output rolls, means to vary the speed of each set of corresponding input and output rolls and means operably associated with the ferrous markings on the back of the web material to sense the position of the markings to control the means to vary the speed of each set of corresponding input and output rolls.

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