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GUIDE ROLL FOR FILAMENTS

  • US 3,753,517 A
  • Filed: 09/15/1972
  • Issued: 08/21/1973
  • Est. Priority Date: 11/26/1971
  • Status: Expired due to Term
First Claim
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1. A guide roll for filaments comprising a roll body fitted rotatably about a shaft, said shaft being provided with orifices through which pressurized air is introduced to form between said roll body and said shaft an air film to thereby provide a bearing means by which the roll body is supported, characterized in that the various values involved in the design of said bearing means, are chosen such as to satisfy the following relationship:

  • 2 <

    log n.d.L/Ps.C2.D <

    4.5 wherein n is the total number of orifices for the introduction of the pressurized air, with the limitation that n >

    OR = 6, d is the diameter in millimeters of the orifices for introducing the pressurized air, Ps is the pressure in kilograms per square centimeter absolute at which the pressurized air is fed, with the limitation that Ps >

    OR = 3, C is the clearance in millimeters between the roll body and the shaft in the radial direction, with the limitation that C >

    10 X 10 3, D is the outside diameter in millimeters of the shaft, and L is the sum of the distances in millimeters from the several orifices to the pressurized air discharge outlet measured in the axial direction, provided that when there is no pressurized air outlet between adjacent orifices, the distance between said orifices is not included.

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