Conduits with Insulators for Underground Conductors for the Distribution of Electricity.
Year: 1892

page_text: Date of Application, 25th July, 1892
Complete Specification Left, 25th May, 1893-Accepted, 1st July, 1893
PROVISIONAL SPECIFICATION.
Conduits with Insulators for Underground Conductors for the
Distribution of Electricity.
I WILLIAM HARDING SCOTT Electrical Engineer of Gothic Works King Street
Norwich do hereby declare the nature of this invention to be as follows:-
In my system of conduits for electrical conductors I use separate lines of glazed
earthenware pipes such as are used for ordinary house drains for cach conductor,
& have insulators of highly vitrified & glazed earthenware or equivalent substance,
at intervals to keep the conductor from touching the pipes. These insulators may
take the form of short lengths of pipe suitably shaped inside so as to form bearers
having conical entrances & passages underneath to drain away into the manholes
at each end any liquid that may find its way into the line of pipes; or the insulating
bearers may be fixed inside the earthenware pipes or between two lengths of pipe
in any convenient manner as by cutting away part of the spigot end of the pipe or
by making recesses into the socket end so that lugs or projections on the insulators
may be cemented into the pipes & the joint inade. The insulators must be so
shaped that a passage is left at the bottom of the inside of the line of pipes for
water to drain away into the manholes at either end.
I make the insulator bearers with conical entrances so that the conductors may
be drawn in from the manholes.
The pipe may be bedded in concrete when strength is required.
COMPLETE
SPECIFICATION.
Conduits with Insulators for Underground Conductors for the
Distribution of Electricity.
I, WILLIAM HARDING SCOTT of Gothic Works, King Street Norwich in the
County of Norfolk Electrical Engineer 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 systems of conduits for electrical conductors according to my invention
I use for each conductor a separate line of glazed earthenware pipes resembling
for instance in material and mode of connection pipes such as are used for house
drains and I provide in combination with such, pipes insulators of highly vitrified
or glazed earthenware or equivalent substance and situated at intervals throughout
the lengths of pipes so as to keep the conductor from contact with the pipes.-
The insulators may be in the form of short lengths between the lengths of pipe or
they may be situated inside the lengths of pipe. The insulators are shaped or
disposed so that a passage is left at the bottom of the inside of the lengths of pipe
for water to drain away into the manholes and the said insulators have conical
splayed or rounded entrances to facilitate the entrance of the conductors.
I have illustrated in the accompanying drawings examples of conduits with
insulators according to my invention.
Figure 1 is a longitudinal section of two adjacent lengths of pipes with an
insulator fixed in between the spigot and socket.
Figure 2 shews a side view of the insulator.
Figure 3 shews in longitudinal section an insulator forming what is practically a

page_text: short length of the pipe with a socket at one end and a spigot at the other end
and
Figure 4 shews in longitudinal section the ends of two lengths of pipe with an
insulator between formed with two sockets for the reception of the ends of the
pipes.
Figure 5 is a side view of this insulator.
In each of the figures the lengths of pipe are marked A. and the insulators B. care
the openings through the insulators which form bearers for the conductors (shewn
at d) the said openings having conical splayed or rounded entrances e² to enable the
conductors to be drawn in by the ordinary drawing in wire d2 at either end. f are
the openings forming passages for water through the pipes to the manholes.
The openings e and may be square circular oval or of any other suitable shape.
The insulators and the pipes may be provided with lugs or projections and
grooves or openings which engage together when the parts are fixed in position for
example part of the spigot ends of the pipes may be cut away or recesses may be
made in the socket end to receive lugs or projections on the insulator as shewn at b
in Figure 2 so that a secure cementing of the insulators in place is effected when
the joints, between the lengths of pipe are made. The manholes may be of any
usual or suitable construction and there may be any number of lengths of pipe
arranged parallel to each other (in any suitable supports or bearers or in concrete)
according to the number of conductors. The arrangements at the manholes for
securing the conductors together and the arrangements for leading off branch lines
from the conductors may also be of any usual or suitable kind.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is-
Conduits with insulators (for underground conductors for the distribution of
electricity) consisting of lengths of glazed earthenware pipe with insulators or
insulated bearers of vitrified or glazed earthenware or equivalent material secured
in or between the said lengths of pipe and having passages with conical splayed or
rounded terminations for the conductors and an opening or openings for the passage
of water along the lengths of pipe substantially as hereinbefore described and
illustrated by the examples shewn in the accompanying drawings.
Dated this 25th day of May 1893
J. H. JOHNSON & Co.,
47,, Lincoln's Inn Fields, London, W.C., Agents.