Improvements in and relating to Flexible Telephone Cords.
Year: 1894

page_text: Date of Application, 11th Aug., 1894-Accepted 15th Sept., 1894
Improvements in and relating to Flexible Telephone Cords.
We, OTTO SCHRIMPFF and RUPPERT RIFFELMACHER, both of Roth near
Nurnberg in the German Empire, Manufacturers, do hereby declare the nature of
this invention, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
This invention relates to flexible cords for use with telephonic receivers and its
object is to obviate the danger of breaking when such cords are subjected to strain.
A flexible cord constructed according to this invention is provided with the
usual two insulated conductors and with an additional or third cord by means of
which the cords and the telephone are suspended. This third cord is furnished
with a loop hook or other device for the purpose of suspension. The ends of the
conducting cords are furnished with contact pieces by means of which they are
easily attached and detached.
The accompanying drawings, reference to which is hereinafter made, illustrate
in what manner this invention may be carried into effect. Similar letters are used
to indicate similar parts where they occur in the different figures.
Figure 1 shews the combination with the two conducting cords of a third
suspending cord.
Figure 2 illustrates the three cords after they have been braided together.
Figure 2A shews a modified form of suspensory device.
Figures 3, 34 and 3B, illustrate how the ends of the conducting cords are
furnished with strong and easily insertable and removable contact pieces.
As represented in the drawings the two conducting cords 1, 1, may be of the
usual or any ordinary construction and have combined with them a third cord s.
In Figures 1 and 2 the end of the cords is shewn provided with a swivel hook c,
while in Figure 2ª the cord is shewn divided to form a loop. Any other device
however may be employed from which the cords may be suspended. It is preferred
to leave the ends of the finished cords separate for a distance of about
20 centimetres as shewn in Figure 2. The three cords are braided or otherwise
finished or fastened together, the ends of the conducting cords being provided with
the contact pieces d' d³.
Figures 3, 34, and 3B illustrate the application of one of the contact pieces to
one of the conducting cords. The end of the cord is stripped and the bare wire is
placed within one part or side of the flat fluted or double tube h which is also
furnished with a pin d'. The tube or tubes his or are then twisted as shewn in
Figure 3 thus establishing a firm and efficient contact between the cord / and the
pin d'. For the purpose of improving the appearance of the finished contact it is
preferred to cover it with the ferrule z as represented by Figure 3B. The tubes h
and the end of the cord I are then braided whipped or bound and the ferrule = is
slipped over the pin d'. If desired the ferrule may be secured in place by means
of an indentation n formed in it after it is placed in position.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. Flexible cords for telephones constructed and arranged substantially as
herein before described and as illustrated by the accompanying drawings.
2. In a flexible telephone cord the combination with two conducting cords or
wires of a third suspending cord, arranged substantially as herein before described
and as illustrated by the accompanying drawings.

page_text: 3. The combination with a flexible telephone cord of jointing and contact pieces
constructed and arranged substantially as hereinbefore described and as illustrated
by the accompanying drawings.
Dated this 10th don
AD 1004
WILLIAM E. HEYS,
Agent for the Applicants.