NOTE: The wedge socket efficiency is
approximately two thirds of the breaking strength of
the wire rope due to the crushing action of the wedge.
A basket socket is normally attached to the end of
the rope with either molten zinc or babbitt metal;
therefore, it is a permanent end fitting. In all
circumstances, dry or poured, the wire rope should
lead from the socket in line with the axis of the socket.
DRY METHOD. The basket socket can also&
fabricated by the dry method (fig. 5- 12) when facilities
are not available to make a poured fitting; however, its
strength will be reduced to approximately one sixth of
that of a poured zinc connection.
POURED METHOD. The poured basket
socket (fig. 5-13) is the preferred method of basket
socket assembly. Properly fabricated, it is as strong as
the rope itself, and when tested to destruction, a wire
rope will break before it will pull out of the socket.
When molten lead is used vice zinc, the strength of the
connection must be approximate] y three fourths of the
strength of a zinc connection
Permanent eyes in wire rope slings can also be
made in 3/8- to 5/8-inch (9.5 to 15.9-mm) wire rope
by using the nicopress portable hydraulic splicing tool
and oval sleeves. The nicopress portable splicing tool
(fig. 5-14) consists of a hand-operated hydraulic pump
connected to a ram head assembly. Included as a part
of the tool kit are interchangeable compression dies
for wire sizes 3/8, 7/16, 1/2, 9/16, and 5/8 inch (9.5,
11.1, 12.7, 14.3, and 15.9 mm). The dies are in
machined halves with a groove size to match the oval
sleeve and the wire rope being spliced. The oval
sleeves (fig. 5-15) are available in plain copper or
To make an eye splice, pick an oval sleeve equal
to the size of the wire rope being spliced. Slide the
sleeve over the bitter end of the length of rope, then
form an eye and pass the bitter end through the end
again (fig. 5-16). Next, place the lower half of the
compression die in the ram head assembly. Place the
oval sleeve in this lower half and drop in the upper half
of the die. Fully insert the thrust pin that is used to hold
the dies in place when making the swage. Start
pumping the handle and continue to do so until the dies
meet. At this time the overload valve will pop off, and
a 100-percent efficient splice is formed (fig. 5-17).
Retract the plunger and remove the swaged splice.
Figure 5-12.Attaching a basket socket by the dry method.