Improvements in and relating to the Construction of Joints for Telegraphic, Telephonic, and like wires.
Year: 1889

page_text: Date of Application, 15th Nov., 1889
Complete Specification Left, 14th Aug., 1890-Accepted, 27th Sept.,
1890
PROVISIONAL SPECIFICATION.
Improvements in and relating to the Construction of Joints for
Telegraphic, Telephonic, and like wires.
I, ROBERT JOSEPH HOOPER-RASTRICK of No. 30 Lavender Gardens, Lavender Hill,
Wandsworth, in the County of Surrey, Gentleman, do hereby declare the nature of
this invention to be as follows:-
In the joining of lengths of telegraph, telephone and like line wires, two systems
have hitherto invariably been adopted, namely, the common twist join, and, what is
known as the "Britannia joint," which latter is made by laying the ends of two wires
together, serving them with a fine wire, and soldering the whole. In making either
of these joints considerable skill is required in the twisting, serving and soldering,
and much time is necessarily occupied in the process. These are points of the highest
importance when a "breakdown" occurs, requiring speedy repair, and restoration of
communication.
My invention is devised with a view to overcome these disadvantages, by rendering
the formation of a joint speedy, inexpensive, and highly efficient as regards tensile
strength and electrical continuity.
The device, according to my invention, consists of a metal sleeve divided longitudi-
nally, and having a semicircular recess or groove formed in each. In one half of said
sleeve is fixed centrally a screw, which, when the two parts are brought together,
passes through a perforation in the other half, and, by means of a thumb screw, nut or
equivalent, the two halves are held firmly together. In one of the parts of the
sleeve are drilled, bored, stamped or otherwise formed transverse recesses for the
purposes hereinafter described. When it is desired to make a joint, the ends of
the two wires are turned sharply at right angles, and filed down to leave only small
projections, which latter take into the transverse recesses above described, the wire
itself lying in the longitudinal grooves. On now adjusting the second part of the
sleeve, and screwing the nut tightly home, a perfect mechanical and electrical joint is
made in an extremely short space of time.
Branch wires may also, if desired, be secured to the sleeve in the same manner by
'simply modifying the shape of the sleeve.
11 101L
November 1889
EDGAR GEORGE,
27, Bow Lane, Cannon Street, E.C., Agent.
COMPLETE SPECIFICATION.
Improvements in and relating to the Construction of Joints for
Telegraphic, Telephonic, and like Wires.
I ROBERT JOSEPH HOOPER RASTRICK of No. 30 Lavender Gardens, Lavender Hill,
Wandsworth, in the County of Surrey Gentleman, 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 :-
In the joining of lengths of telegraph, telephone and like line wires, two systems
have hitherto invariably been adopted, namely, the common twist joint, and, what is
known as the "Britannia joint" which latter is made by laying the ends of two wires
together, serving them with a fine wire and soldering the whole.
In making either of these joints considerable skill is required in the twisting, serving
and soldering, and much time is necessarily occupied in the process. These are points
of the highest importance when a "breakdown" occurs, requiring speedy repair, and
restoration of communication.

page_text: My invention is devised with a view to overcome these disadvantages by rendering
the formation of a joint, speedy, inexpensive and highly efficient as regards tensile
strength and electrical continuity.
In order that my invention may be better understood, I have appended the accom-
panying sheet of drawings in which
Figure 1 represents a metal sleeve joining the two ends of a wire;
Figure 2 is a plan of the two halves of the sleeve; and
Figure 3 is a section of the device showing the arrangement of the ends of the
wires.
The device according to my invention consists of a metal sleeve a, a, divided
longitudinally, and having a semicircular recess or groove bb¹ formed in each section.
In one half of said sleeve is fixed centrally a screw c, which, when the two parts
are brought together passes through a perforation d in the section a, and, by means
of a thumbscrew, nut or equivalent e the two halves or sections are held firmly
together.
In one of the parts or sections of the sleeve, are drilled, bored, stamped or otherwise
formed transverse recesses off for the purpose hereinafter described.
When it is desired to make a joint, the ends of the two wires g g¹ are turned or
bent sharply at right angles, and filed down to leave only small projections, as shown
at Figure 3, which latter take into the recesses ff, above described, the wires lying in
the longitudinal grooves 6, 6', as shown. On now adjusting the section a of the
sleeve, and screwing the nut e tightly home, a perfect mechanical and electrical joint
is made in an extremely short space of time. The two sections may, if desired, be
soldered together, so as to prevent oxidation.
Branch wires may also be secured to the sleeve in the same manner by simply
modifying the shape of said sleeve.
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 :-
The employment of a longitudinally divided sleeve recessed to receive the bent ends
of the wires to be joined, the two halves or sections being secured by a screw-and nut
substantially as described and shown.
Dated this 14th day of Amount 1000
EDGAR GEORGE,
101, London Wall, E.C., Agent.