Year: 1897

page_text: Date of Application, 4th Feb., 1897-Accepted, 13th Mar., 1897
invention, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
The object of my invention is to provide a joint piece for electrical conductors
which is of light weight, can be cheaply manufactured, can be readily applied to tho
wires to be joined, and will insure good electrical connection between the said wires,
and this object I attain in the manner horoinafter set forth, reference being had to
the accompanying drawing, in which :
Figure 1 is a perspective view of a joint for electrical conductors made in accordance
with my invention;
Figure 2 is a plan or top view of the same;
Figure 3 is a transverse sectional view on a larger scale;
Figure 4 is a view illustrating the course taken by the end portion of each of the
wires;
Figure 5 is a perspective view illustrating another form of joint made in accordance
with my invention;
Figure 6 is a transverse section of the same on a larger scalo ; and
Figures 7, 8, and 9 are views illustrating modifications of my invention.
In carrying out my invention, I prefer to take a seamless tube or tube blank and
draw the same so as to indent its sides and form a joint piece with three independent
tubes or tubular receptacles 1, 2, and 3, the tubes in the joint piece, shown in
Figures 1, 2, and 3, being disposed in triangular form, that is to say, two being side
by side in the same plane and the other above and midway between those two.
In making a joint or connection with this joint piece one of the wires, say the
wire 4, is passed through the tube 1 in one direction, say from the right, and the
other wire 5, is passed through the tube 2 in the opposite direction, the end portion
of each wire being permitted to project for some distance beyond the end of the tube
through which it is passod. The end portion of the wire 4 is then passed over the
wire 5, bent back upon itself, and thrust into one end of the tube 3, and the end
portion of the wire 5 is passed under the wire 4 and then bent back upon itsolf and
thrust into the opposite end of said tube 3 after which the wires are drawn tight so
as to pull their loops 6 close up to the ends of the joint piece. This has the offoct
not only of causing the loop of the wire 4 to bear firmly against the wire 5 and the
loop of the wire 5 to bear with equal force against the wire 4, but it also draws the
said wires firmly into contact with the end portions of the tubes to which they aro
adapted, hence insuring a good electrical contact independent of the contact of the
wires with the tubes between the ends of the latter, so that perfect electrical connection
between the two wires is insured.
In Figures 5 and 6, I have shewn a joint piece in which the three tubular
portions 1, 2 and 3 are disposed side by side in the same plane instead of being
arranged triangularly, as shown in Figures 1, 2 and 3, the course of the wires,
however, being substantially similar in both cases.
In Figure 7, i have shewn a triple tube, with joint, and in Figure 8, I have shown
three separate tubes secured together by soldering or brazing, but I prefer in all
cases to form the triple tube from a single seamless tube blank.

page_text: While I also prefor in every case to dispose the wires in the manner described so
that a loop of each wire will press firmly upon the other wire, such disposal is not
absolutely essential to my invention, for instance, one wire may pass through the
tube 1 and have its end portion bent backward into one end of the tube 2 and the
other wiro may pass through the tube 3 and have its end portion bent back into
the opposite end of said tube 2, as shown in Figure 9, neither wire crossing the
.other.
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 I
claim is :-
1. For electrical conductors, a joint piece consisting of three tubes, disposed closely
together, as described, whereby two of the tubes are available for the passage of the
wires to be joined, and the other for the reception of the backwardly bent ends of the
said wires, substantially as herein before described.
2. For electrical conductors, a joint piece consisting of a seamless tube, indented
so as to form three tubes or channels, two of which are available for the passage of
the wires to be joined and the other for the reception of the backwardly bent onds of
the said wires, substantially as hereinbeforo described.
3. For electrical conductors, a joint pieco consisting of three independent tubos
disposed closely together in triangular form, substantially as hereinbeforo described.
4. For electrical conductors, a joint piece consisting of a seamless tube having its
sides indented so as to form three independent tubes arranged in triangular form,
substantially as herein before described.
5. The combination of the joint piece consisting of three tubes, in contact or
connection with each other with conducting wires one passing in one direction
through one of said tubes and the other passing in the opposite direction through
another of the said tubes, the end portion of one wire being bent back into one end
of the third tube and the end portion of the other wire being bent back into tho
opposite end of said third tube so as to form, at each end of the joint piece, a loop of
one wire through which the other wire is passed and upon which it bears, substantially
as herein before described.
Dated this 4th low of Fohruar 1907
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.