IMPROVEMENTS IN IRON WIRE CABLES PROVIDED WITH SOCKETS
Year: 1877

page_text: '
PROVISIONAL SPECIFICATION left by Henry Conradi at the Office of the
Commissioners of Patents on the 23rd October 1877. A communication from
abroad by Theodor Hager, of Main, in Prussia, Germany.
"
HENRY CONRADI, of 8, Lower James Street, Golden Square, in the County
of Middlesex. "IMPROVEMENTS IN IRON WIRE CABLES PROVIDED WITH SOCKETS."
[A communication from abroad by Theodor Hager, of Main, in Prussia, Germany.]
The iron wire cables manufactured in the same manner as hemp ropes by twisting
the wires, and thus forming groups of spiral-shaped layers, do not offer the requisite
resistance to the tensile or compressive strains.they have to stand. In the present
arrangement the mail is formed by wires placed parallel to each other, fastened
and held together so as to form a cable with free or closed ends as described
hereafter.
I. The cable or wire chain, with free ends, as represented in Fig. I., shows some
points on which force and load act. It is composed of a series of wires placed
parallel to each other, which are maintained in their respective position by means of
sockets, cylindrical or other shaped covers, which protect the wire and form for the
wire disc the point of action. The sockets can be made of any material and shape,
but are represented in a cylindrical, or in form of a ball. These sockets form one
of the principal parts. The wires lying freely and not being twisted together
possess a greater elasticity than those formed by wires twisted together of the same
capacity. The ends being the points of direct action for load and power, are formed
by conical-shaped fasteners of any kind, as rings or hooks. Fig. 6 represents in
enlarged scale a cone a, bored cylindrically, through which the wires pass, which
turn afterwards back again, and at the end of the cone are wound over the parallel
layers;
the ends are then fastened to the cable. The cone a, Fig. 6, together with
the wires fastened to it, is placed into the socket b, Fig. 1, being covered and pro-
tected by a leather disc c, and into which socket any kind of ring or hook-shaped
fastener d is then screwed in. The other end of the cable is fixed in the same way.
As soon as the power and load act on the ring, the cone a, covered by the single
wires of the cable, is drawn tight into the conical bored socket b, effecting a most
secure fastening and point of action.
II. The Closed Endless Cable.-The arrangement of both ends is similar to the

page_text: former, but the sockets in which the cones, covered with the wires are placed, belong
to both. Fig. 2, 3, 4, show so clearly several kinds of the numerous connecting
arrangements that it can be understood without further explanation.
III. The Covered Cable.-Such a cable constructed on the principle of mail con-
nection is represented in Fig. 7, in order to show more clearly the winding round.
e, e, e, e, represent groups of wires placed parallel round a hemp core or rope, which
are fixed and tightened by pulling the wire f, f, which is wound over them in such
a manner that each is covered by it in certain distances, and the even and parallel
position of the wires is herewith secured and maintained. The zinc wire in con-
nection with the iron or steel wire protects the wires from rust through the gal-
vanic influence. Moreover, the cable can be covered with any kind of material to
secure its shape and to protect it.
IV. Driving Belt Provided with the above-described Wire Cable.-Instead of
using double belts, or belts of several layers, where a single belt is not sufficient for -
the transfer of power, it is in the present case only required, as shown in Fig. 5, to
provide the single belt with several cable pieces, by fixing or stitching the latter
on it. For this purpose it is advisable to interchange with larger and smaller
sockets in order to give room for the stitch belt.
The improvements on which the claims are based consist in,-
1. In the disposition of the wires, being laid parallel to each other, and which
produce hereby a greater elasticity.
2. In the disposition of the several kinds of sockets placed over the wires, fastening
and holding them together, thus forming points of attachment for the transmission
of endless belts. These sockets can also be fixed to twisted wire cables and
ropes..
3. In the combination of winding zinc wires between the iron or steel wires of
the cable in order to prevent rust.
4: In the application of hollowed out or bored cones fastened to the end of
the cable, which are pressed into corresponding and similar shaped sockets, thus
transforming the open cables into closed ones (endless), or forming also, as in the
case of cables for mining purposes, points of attachments for power and load.
5. In the application of the wire cable or chain provided with the sockets,
which are drawn over it, fixed to the single driving leather belts or others, in order
to strengthen it, and to increase its safe working strain.