Improvements in Electric Couplings, more especially for use in Electric Bell Circuits and the like Domestic Purposes.
Year: 1889

page_text: Date of Application, 14th Oct., 1889-Accepted, 18th Jan., 1890-:
COMPLETE 'ECI
CATION.
Improvements in Electric Couplings, more especially for use in
Electric Bell Circuits and the like Domestic Purposes.
I HERMANN STUDTE, Student, of Dom Kruk near Inowraclaw in the Kingdom of
Prussia and German Empire 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 a conductor contact for house telegraphs and other
electric conductors, by means of which dining and work tables and the like can be
placed in connection with the house telegraph conductor or other electric apparatus
in an easy and convenient manner.
This invention possesses the advantage that it is not in the way does not project from
the floor or the table and always ensures a good electric contact.
The invention is shown in the accompanying drawings and is hereinafter described
with reference thereto.
Figures 1 to 4 show a contact appliance according to my present invention for one
conducting wire.
Figure 1 shows the new contact appliance applied to a table.
Figure 2 gives a view of the bottom of the contact from above.
Figure 3 a longitudinal section along the line (Figure 2) bottom.
Figure 4 shows-a-longitudinal section through the-top of the contact.
Figures 5 to 7 show a contact appliance which forms the contact of both conducting
wires with the table.
Figure 5 is a view from above.
Figure 6 a longitudinal section along the line y-y (Figure 5).
Figure the upper part thereof in longitudinal section.
The conductor contact for one wire according to Figures 1 to 4 is arranged as
follows:-
In a brass or other suitable metal cap or capsule b which is connected with a
conducting wire a little cap resting on a spring fis inserted in such a way that it
can be pressed entirely into the cap or capsule b. To the top of the cap h a bell g is
fitted as the closing piece and is connected with the conducting wire l. Two of
these capsules bare screwed into the floor of the room and connected with the
conductor lying under the boards.
In each of two feet of a table etcetera one closing bell g is screwed (Figure 4) and
then the table is placed with these feet upon the contact caps or capsules & let in to
the floor (see Figure 1).
The caps lay themselves inside the closing bells g and thus conduct the electrical
current to the press knob or to the lamp etcetera along the wires at the foot or carried
up through the foot.
placed into the interior
Round the insulating
Figures 5 to 7 show a conducting contact for the two wires.
In the cap or capsule Figure 6 an insulating cylinder is
of which the cap resting on a spring is pushed.
cylinder of ebonite or other suitable material a brass ring is placed which rests
on the spring. One of the conducting wires / leads the current into the bottom
plate of the insulating cylinder through the spring "into the cap while the other
Conducting wire leads the current through the metal screw into the spring f² and
through the latter into the ring r. ·
The closing piece in the foot of the table (Figure 7) consists of the bell which
s connected with the wire and the also inserted concave ring p which is in
connection with the wire l¹.
The conducting wires are either carried up in grooves or perforations in the legs
of the table or as desired.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what
1 claim is
1. A contact appliance for house telegraphs and electric conductors consisting of
two metal bells or concave pieces g let in to the legs of the table which are connected
with the conducting wire which leads the electric current to the top of the table
and the two metal caps or capsules (Figure 3) let in to the floor and the caps h
which are forced up by the spring fand place themselves in the metal bell
connected with the floor conductor all substantially in the manner and for the
purposes set forth.
g
and are
2. The contact described in claim 1 altered in such a way that instead of two
separate caps or capsules 6 let in to the floor and two metal bells g there is one metal
capsules 6 in which an insulating cylinder (Figure 6) is placed into the interior of
which the cap is pressed upwards by the spring fagainst the central bell g' while
a ring outside the insulating cylinder is pressed by the spring f1 against the ring » in
the foot of the table and concentric to g₁ the springs ff' the cap h¹ and the ring r
being provided with conducting wires all substantially as and for the purposes
hereinbefore described and illustrated in the drawings hereunto annexed.
תנות
1000
TONGUE & BIRKBECK,
34, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.