| 释义 |
Lang|læŋ|
Also lang.
The name of John Lang, used attrib. and in the possessive (esp. in Lang('s) lay) to designate a lay (lay n.7 7 b) used for wire ropes and patented by him in 1879, in which the strands forming the rope are twisted in the same direction as the wires forming each strand.
1883Engineering 14 Dec. 537/1 In the Lang method the strands and the rope are laid in the same direction. 1887J. B. Smith Treat. Cable or Rope Traction viii. 156 (heading) The ‘Lang lay’, or construction of wire ropes. 1896W. E. Hipkins Wire Rope 52 Ropes on the lang principle. 1930Engineering 1 Aug. 135/1 The hauling rope is of the Lang-lay type, built up of six three-cornered strands and a hemp core. 1959B.S. Handbk. No. 4: Lifting Tackle (B.S.I.) I. 90 Ropes made Lang's lay require careful handling to ensure that the rope's end does not twist, and so allow ‘turn’ to come out of the rope. 1966McGraw-Hill Encycl. Sci. & Technol. XI. 627/1 In lang lay, wires in the strand and the strands themselves are laid in the same direction. This type rope wears better, is more flexible, and lasts longer. |