Improvements in the Construction of Underground Conduits for Electrical Conductors.
Year: 1890

page_text: Date of Application, 23rd Sept., 1890
Complete Specification Left, 22nd June, 1891-Accepted, 25th July, 1891
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Underground Conduits for
Electrical Conductors.
I, WILLIAM CHARLES CLOETE HAWTAYNE of 44 Hartismere Road, Walham
Green in the County of Middlesex, Electrical Engineer, do hereby declare the
nature of this invention to be as follows:
The object of my invention is to provide an underground conduit for electrical
conductors which can be very readily and economically laid and which is free from
external joints and the objections incidental thereto. According to my invention
I arrange the tubes or ways (through which the conductors are to pass) in position
in trenches made for their reception and I support them in position by distance
pieces or in any convenient way. I then introduce into the trench cement bitumen
(or other material which will "set") so that it encloses the tubes or ways, and
when set forms a continuous conduit without joints and effectually protecting the
tubes or ways. There may be first put into the trench a trough or the like of iron
or other material to receive the cement bitumen or the like. The tubes or ways
may be made of any permanent material such as iron wood or the like or even of
paper saturated or treated with a preservative and insulating substance or compound
or they may be made of a material such for instance as paper rolled and cemented
with an adhesive substance so that they will act as cores sufficiently to allow the
cement bitumen or the like to set around them and retain the necessary ways
through the cement bitumen or the like after the cores have become disintegrated.
Dated this 23rd day of September 1890.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, Agents.
COMPLETE SPECIFICATION.
Improvements in the Construction of Underground Conduits for
Electrical Conductors.
WILLIAM CHARLES CLOETE HAWTAYNE Electrical Engineer of 16 Lower
Parkfields Putney in the County of Surrey 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 :-
The object of my invention is to provide an underground conduit for electrical
conductors which can be very readily & economically laid & which is free from
external joints & the objections incidental thereto. According to my invention
I arrange the tubes or ways through which the conductors are to pass in position
in trenches made for their reception & I support them in position by distance
pieces or in any convenient way. I then introduce into the trenches cement, bitumen
(or other material which will "set") so that it encloses the tubes or ways & when
set forms a continuous conduit without joints and effectually protecting the tubes or
ways. There may be first put into the trench a trough or the like of iron or other
material to receive the cement, bitumen, or the like. The tubes or ways may be
made of any permanent material such as iron, wood or the like or even of paper
saturated or treated with a preservative & insulating substance or compound and
they may be made of a material such for instance as paper rolled and cemented
with an adhesive substance so that they will act as cores sufficiently to allow the
cement, bitumen or the like to set around them & retain the necessary ways through
the cement, bitumen or the like after the cores have become disintegrated.

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 I
claim is
1. The mode herein described of constructing underground conduits for electrica¹
conductors, the said conduit consisting of an internal tube or way surrounded by a
continuous packing of cement, bitumen or other material which will "set" & be
free from external joints substantially as hereinbefore described.
Dated this 22nd day of June 1891
W. C. C. HAWTAYNE.