Reeving

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Order of reeving with 20 rolls; ABoK # 3259 (front only)

With reeving , for example, the hoisting rope of a - both the process and the manner referred to, in a rope threading roller blocks will crane in the rollers of roller head and hook block .

European reeving

With the so-called "European reeving", the hoist rope is first guided over a pulley on the far right (or left) outside over the pulley head. Then the rope is always reeved into the next roll to the left (or right).

American reeving

With the “American reeving”, however, the hoist rope is fed in the middle of the roll package. Then the rope is first reeved in one direction (e.g. to the right), whereby one role is always skipped both in the roller head and in the hook block. At the end, the rope is reeved in the shape of an 8 between the hook and the pulley head and then guided back to the middle in the pulleys that are still free. From there, the procedure is continued mirror-inverted in the other direction, until the rope is finally back in the middle and is also attached there. The advantage of this reeving is that the rollers wear more evenly and the rope package has less tendency to twist itself.

Prime examples

  • Leonardo's drawing as the origin with 20 rolls side by side

  • In comparison, the modern design with 31 rollers (16 above, 14 below, +1 roller in the middle in the lower block) pulled with 2 pulling ropes (in the background)

  • Parallel reeving from right to left

  • One over the other reeving from top to bottom

  • Reeving according to ABoK # 3254,

  • Fixing the end under the roll

See also

literature

  • Clifford W. Ashley: The Ashley Book of Knots . Over 3800 knots. How they look like. What they are used for. How they are made. Special edition. Edition Maritim, Hamburg 2005, ISBN 3-89225-527-X . Here: pp. 531, 532; ABoK # 3251-3260

Web links