Guides in which tension is created by leading the thread over a zigzag path with several sharp bends, these bends being in addition to those that are needed to carry the thread from the cop or bobbin to the outlet eye.
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201,
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72, Metal Deforming,
160+, and 205 for a metal working machine which provides an undulating path for successively presented portions of running length work.
242, Winding, Tensioning, or Guiding,
541+, and 153 for a tensioning a running material.