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Construction of Wire Rope
Seaman - Military manual for the Seaman rate
Correct Way to Take Out a Kink in Wire Rope
Figure 3-25.–Arrangement of strands in wire rope. As shown in figure 3-26, wire rope is laid up in various  ways: RIGHT REGULAR LAY: Wires in the strands are twisted to the left; strands in the rope are twisted to the right. LEFT REGULAR LAY: Wires in the strands are twisted to the right; strands are twisted to the left. Figure 3-26.–Lays of wire rope. RIGHT LANG LAY: Both wires in the strands and strands in the rope are twisted to the right. LEFT LANG LAY: Both wires in the strands and strands in the rope are twisted to the left. USES  OF  WIRE  ROPE Chapter 613 of the Naval Ships' Technical Manual specifies the uses that may be made of wire rope of various constructions. A few of the more common constructions  and  some  of  their  uses  follow: 6 X 7: Only the galvanized type is specified. It is not suitable for general hoisting, but is applicable for permanent  standing  rigging. 6 X 19: Size for size, this type of construction is the strongest  of  all  the  wire  ropes.  When  made  of galvanized wire, 6 X 19 is used principally for heavy hoisting and is particularly useful on derricks and dredges.  Standing  rigging,  guys,  boat  slings,  and topping lifts for booms are often made of galvanized 6 X 19 wire rope. Phosphor bronze 6 X 19 rope is used for lifelines, wheel ropes, radio antennas, antenna downleads, and so forth, where either noncorrosive or nonmagnetic  properties  are  desirable. 6 X 37: When made of ungalvanized steel wire, this construction is flexible, making it suitable for cranes and similar machinery. It may be used for heavy hoisting. For instance, hoisting ropes larger than 1 3/4 inches  in  diameter  usually  are  of  this  type.  When  made of galvanized steel wire, this wire rope may be used for steering gear, boat crane falls, towing hawsers, bridles, torpedo  slings,  and  heavy  running  rigging. CARE  OF  WIRE  ROPE Long lengths of wire rope are usually on reels when received from your supply activity. Never try to unreel wire rope from a stationary reel. Mount the reel on a pipe or rod supported by two uprights. This method allows the reel to turn as the wire rope is pulled. Unreeling presents no problem, but spooling the wire rope back onto the reel may give you some trouble unless you remember that it tends to roll in the opposite  direction  from  the  lay.  For  example,  a right-laid  wire  rope  tends  to  roll  to  the  left. Consequently, start a right-laid wire rope at the left and work toward the right when spooling over the top of the reel. When spooling under the reel, start at the right and work toward the left. Naturally, handle left-laid wire rope just the opposite. 3-19

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