Textiles: spinning – twisting – and twining – Apparatus and processes – With wire or strand preforming or shaping
Patent
1989-03-14
1990-08-14
Petrakes, John
Textiles: spinning, twisting, and twining
Apparatus and processes
With wire or strand preforming or shaping
57 9, 57 13, 57 59, 57314, H01B 1302, H01B 1208, D07B 306
Patent
active
049476378
ABSTRACT:
Improved multistrand Rutherford-type superconducting cable (42) is produced in a flattened form with two layers of helically wound strands (33) and in which the strands are alternately twisted about their lengths equally and in opposite directions to provide a flat cable with improved stability. In particular, the cable (42) is made by guiding multifilament wire strands (33) from spools (32) on a rotating turret (11) to a fixed tapered forming mandrel (22) where they are wound diagonally around the mandrel and then rolled into a flattened shape. The spools (32) are located around the periphery of the turret and are rotatable about axes in a plane parallel to the turret (11) to unroll the wire. Sprocket assemblies (48 and 49) are driven by drive chains (68 and 76) to rotate alternate spools (32) equally and in opposite directions relative to the forming mandrel (22) so that the wire strands (33) are twisted prior to being wound on the mandrel (22). The rate of rotation of the spools (32) in one direction is different than the rate of rotation of the spools (32) in the opposite direction to compensate for the rate of rotation of the turret (11) so that all strands (33) have the same degree of twist about their lengths.
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Armer Rollin A.
Royet John M.
Carnahan L. E.
Gaither Roger S.
Moser William R.
Petrakes John
The United States of America as represented by the United States
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