Figure 5-18.Swage gauge.
Figure 5-19.Lap splice using a nicopress oval sleeve.
space should be maintained between the two sleeves,
as shown. The lap splice should be tested before being
HANDLING AND CARE OF WIRE ROPE
To render safe, dependable service over a
maximum period of time, you should take good care
and upkeep of the wire rope that is necessary to keep
it in good condition. Various ways of caring for and
handling wire rope are listed below.
Coiling and Uncoiling
Once anew reel has been opened, it may be coiled
or faked down, like line. The proper direction of
coiling is counterclockwise for left lay wire rope and
clockwise for right lay wire rope. Because of the
general toughness and resilience of wire, it often tends
to resist being coiled down. When this occurs, it is
useless to fight the wire by forcing down the turn
because the wire will only spring up again. But if it is
thrown in a back turn, as shown in figure 5-20, it will
lie down proper] y. A wire rope, when faked down, will
run right off like line; but when wound in a coil, it must
always be unwound.
Wire rope tends to kink during uncoiling or
unreeling, especially if it has been in service for a long
time. A kink can cause a weak spot in the rope that
wears out quicker than the rest of the rope.
A good method for unreeling wire rope is to run a
pipe, or rod, through the center and mount the reel on
drum jacks or other supports, so the reel is off the
ground (fig. 5-21, view A). In this way, the reel will
turn as the rope is unwound, and the rotation of the
Figure 5-20.Throwing a back turn.
reel helps keep the rope straight. During unreeling,
pull the rope straight forward and avoid hurrying the
operation. As a safeguard against kinking, NEVER
unreel wire rope from a reel that is stationary.
To uncoil a small coil of wire rope, simply stand
the coil on edge and roll it along the ground like a
wheel, or hoop (fig. 5-21, view B). NEVER lay the
coil flat on the floor or ground and uncoil it by pulling
on the end because such practice can kink or twist the
One of the most common types of damage
resulting from the improper handling of wire rope is
the development of a kink. A kink starts with the
formation of a loop (fig. 5-22).
A loop that has not been pulled tight enough to set
the wires, or strands, of the rope into a kink can be
removed by turning the rope at either end in the proper
direction to restore the lay, as shown in figure 5-23. If
this is not done and the loop is pulled tight enough to
cause a kink (fig. 5-24), the kink will result in
irreparable damage to the rope (fig. 5-25).
Kinking can be prevented by proper uncoiling and
unreeling methods and by the correct handling of the
rope throughout its installation.
Whenever possible, drums, sheaves, and blocks
used with wire rope should be placed to avoid reverse
or S-shaped bends. Reverse bends cause the individual
wires or strands to shift too much and increase wear and
fatigue. For a reverse bend, the drums and blocks affecting