AN IMPROVEMENT IN COUPLINGS FOR ROPE TRANSMISSIONS
Year: 1884

page_text: I HUGO PATAKY Civil Engineer and Patent Solicitor in Berlin S.W. Hedemann
Str. 2 do hereby declare the nature of said Invention for "AN IMPROVEMENT IN
COUPLINGS FOR ROPE TRANSMISSIONS" and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement:
This coupling for hemp or wire ropes which is intended for transmissions is so
constructed that the outer diameter of the shell b of this coupling is of the same
size as the diameter of the hemp or wire rope so that the outer surface of the
shell of the coupling is on a strait line with that of the rope besides this the
entire length of the coupling is as short as possible to enable it to lay well on to
the transmitting disc.
This coupling consists of the outer shell b. which is provided inside with a round
strongly rising thread for the reception of the end of the rope and a sharp fine
thread for the reception of the discs d' and h which are connected with the
noveable eye c.
On the lower end of this eye c the two discs d d are fixed and the first of them
is screwed on and secured by means of the pin screws e whereas the second is
moveable on the bolt f of the eye c but yet screwed in the shell 6 and fastened by
means of pin screws g to the shell b.
On the one half of the coupling the surfaces of the discs d and which touch
each other are provided with ratchets so that the eye c and with it the wire or
hemp rope can turn in one direction only and so that a turning back of the eye
and of the rope is prevented by the ratchets of the discs d and d¹.
The discs & and d¹ of the second part of the coupling have no ratchets but are
free to act as a swivel.
In case a wire rope has to be provided with a coupling the end of the former is
made red hot and a thread corresponding with the coupling box a is pressed into
the end of the rope and the latter is then screwed into the coupling box a intended
for its reception Fig. 1. The hemp wrapped round the end of the wire rope
squeezes itself between the coupling box a and the shell b which is connected with
the former by means of disc h.

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Between the disc h and the disc d and eye can intermediate space is left as high
as the ratchets fixed on the discs d and d so that when the eye on the rope turns
the disc d can lift itself off d.
In the case of a wire rope not served with hemp or in case of a hemp rope the
coupling box a and disc h are omitted Fig. 3.
In the rope couplings used as yet the eye was worn out in a short time by the
tractive power of the stretched rope and in order to prevent the whole coupling
becoming useless thereby the eyes c are provided with removeable swallow tail
shaped insertion pieces fastened by the screw 2. The coarse round thread on the
inner side of the coupling box a can likewise be omitted and in that case a thread
is not pressed into the end of the wire rope but the latter is simply pushed into
the smooth coupling box.
Another arrangement for fastening couplings to wire ropes is shown in Fig. 4 in
this case the end of the wire rope having been pushed into the coupling box ba
round wedge k with a hollow head is driven into the core of it, the wire ends of
the rope are bent into the hollow and soldered in so that the conical shaped end
of the rope cannot extricate itself from the coupling box.
This arrangement can likewise be employed successfully with wire ropes served
with hemp. Fig. 5.
Fig. 6 shows a coupling box the two halves of which are not connected pliably
by eyes but by a stiff shell m which are intended for use on discs of large
dimensions.
The advantages of this Invention consist chiefly in the following points:-
--
1 That in wet or dry weather or when necessary owing to the unavoidable
turning of new wire or hemp ropes on transmissions the rope need not be taken
off the discs but can be shortned or lengthened as required by turning the eye c by
means of a hook key which can be done by one man.
2nd That the joining of rope ends provided with the coupling shown in Fig. 4
can be effected by a simple stiff shell.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is
1st In rope couplings the application of two discs d and d' provided with ratchets
which are connected with the eye c in such a manner that they allow the latter to
turn in one direction only and then only for the purpose of stretching the rope
but prevent the turning back of the stretched rope.
2nd The application of swallow tail shaped insertion pieces r in the eye c in
order to be able to renew when necessary this part which is so much exposed to
wear by the tractive force of the stretched rope.
3rd The application of a wedge k provided with a hollow into which the single.
wire strands are laid and soldered.
4th The application of the screw shaped insertion piece k.
5th The application of disc n provided with teeth in order to secure the laid
over end strands.