An Improved Form or Construction of Pipes for the Reception of Electric Cables.
Year: 1897

page_text: Date of Application, 24th May, 1897
Complete Specification Left, 22nd Feb., 1898-Accepted, 9th Apr.,
1898
PROVISIONAL SPECIFICATION.
An Improved Form or Construction of Pipes for the Reception of
Electric Cables.
We, JOHN JOHNSTON GREEN, and WILLIAM OATES, of the Firm of Oates and
Green, Limited, Claremount, Halifax, in the County of York, Sanitary Engineers,
do hereby declare the nature of this invention to be as follows:-
As
This invention relates to an improved form or construction of combined pipes
for receiving and carrying electric cables employed for underground service.
is well known, a series of pipes or tubes connected together for carrying electric
cables has been in common use, the shape or cross section having hitherto been
square or circular. In practice it is found, if these pipes are not laid longitudinally
true, that when cables were being drawn through the pipes or tubes, the said
cables have become locked fast, consequently the work has been impeded. This
difficulty could be overcome if the tubes were made sufficiently large, but to do
that, the combined pipes are enlarged and are more expensive.
According to our invention we propose to make these pipes, oval or oblong
arranged vertically so that if they are not laid true horizontally there is freedom
and room sufficient to draw the cable through, and this is effected without making
the combined pipes greater in width.
1007
TASKER & CROSSLEY,
Halifax, Patent Agents.
An Improved Form or Construction of Pipes for the Reception of
Electric Cables.
We, JOHN JOHNSTON GREEN, and WILLIAM OATES, of the Firm of Oates and
Green, Limited, Claremount, Halifax, in the County of York, Sanitary Engineers,
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 an improved form or construction of combined pipes
for receiving and carrying electric cables employed for underground service. As
is well known, a series of pipes or tubes connected together for carrying electric
cables has been in common use, the shape or cross section having hitherto been
square or circular. In practice it is found if these pipes are not laid horizontally
true, that when cables were being drawn through the pipes or tubes, the said
cables have become locked fast, consequently the work has been impeded. This
7

page_text: difficulty could be overcome if the tubes were made sufficiently large, but to do
that, the combined pipes are enlarged and more bulky, in addition they are more
expensive.
According to our invention we propose to make these pipes oval or oblong
arranged vertically so that if they are not laid true horizontally there is freedom
and room sufficient to draw the cable through and this is effected without making
the combined pipes greater in width.
The accompanying drawings more clearly explain the manner of carrying out
our invention where Fig. 1, is cross section of one arrangement and Fig. 2 another
arrangement. The openings in the pipes or tubes, A, are made oval or oblong
vertically in which care is taken in their manufacture that there are no corners
formed as in the case of square tubes now in use, in which the corners
catch and tear the cables when being drawn through the said angular tubes; whilst
at the same time, our oval shaped tubes prevent any binding of the cables if the
tubes happened to be unequally set or laid, the vertical space allowing greater
freedom for the drawing through of the cable. B shews the cable when drawn along
the bottom of the tubes and C shews the cable when drawn along the top of the
tubes and set in working order.
The accompanying drawings shew the tubes arranged in sets of three tubes
joined together but they are equally applicable to sets of five, seven eight, or any
other number.
Having now particularly described and ascertained the nature of our, said in-
vention, and in what manner the same is to be performed, we declare that what we
claim is:
The use of oval or oblong tubes arranged vertically and joined together side by
side for purposes and in manner shewn and described herein.