An Improved Method of Constructing Manholes, Boxes, and the like.
Year: 1894

page_text: Date of Application, 2nd Feb., 1894
Complete Specification Left, 4th July, 1894-Accepted, 29th Dec., 1894
PROVISIONAL SPECIFICATION.
An Improved Method of Constructing Manholes, Boxes, and
the like.
We, CARRINGTON RIDDELL GORDON SMYTHE, of 5 Doune Quadrant, Glasgow,
Engineer, and ARCHIBALD HENDRY DUNNACHIE, of Glenboig, Lanarkshire,
Manufacturer, do hereby declare the nature of this invention to be as follows:-
This invention consists in constructing the manholes, and transformer boxes and
the like of fire-clay, stoneware, earthenware, terra-cotta, or similar materials built
in one piece, and of any suitable form, thus preventing leakage, moisture and the
accumulation of gas; at same time providing a convenient and portable manhole,
or box, or the like, and which can be laid in position without building up as is at
present necessary. These manholes, or boxes may be enamelled or glazed outside
or inside or both according to the composition of the material of which they are
made. Suitable openings are provided to fit any form of culvert, conduit, pipe or
conductor and are so arranged to enable workmen to get easy access to conductors
when this is necessary.
These manholes, or boxes may be thoroughly insulated if required.
Dated this 1st day of February 1894
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicants' Agents.
An Improved Method of Constructing Manholes, Boxes, and
the like.
We, CARRINGTON RIDDELL GORDON SMYTHE, of 5 Doune Quadrant, Glasgow,
Engineer, and ARCHIBALD HENDRY DUNNACHIE, of Glenboig, Lanarkshire,
Manufacturer, 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 :-
We will describe our invention, reference being made to the accompanying sheet
of drawings.
Figure 1 is an elevation; Figure 2 is a transverse section; and Figure 3 is a
horizontal section of the same; Figures 4, 5, and 6 are similar three-position views,
and so on down to Figure 24 of manholes and transformer boxes made in accordance
with and constituting our invention.
This invention consists in constructing the manholes, and transformer boxes A
and the like of fireclay, stoneware, earthenware, terra-cotta, or similar materials,
built in one piece, and of any suitable form, thus preventing leakage of moisture
and the accumulation of gas; at same time providing a convenient and portable
manhole, or box, or the like, and which can be laid in position without building up
as is at present necessary with bricks. These manholes, or boxes, A may be
enamelled or glazed outside or inside, or both, according to the composition of the
Do7

page_text: material of which they are made. Suitable openings A¹ are provided to fit any form
of culvert, conduit, pipe, or conductor, and are so arranged to enable workmen to
get easy access to conductors when this is necessary.
These manholes, or boxes, may be thoroughly insulated if required.
In case it may be desired, a small hole B may be left in the bottom of the box to
drain away any water which may get in through the joint of the cover, as shewn in
Figures 3, 6, 9 and 24.
In cases where such boxes are used for transformers, the box may be filled with
oil, or a raised bottom may be provided on which the transformer may be placed,
and the surrounding air or oil will form the insulation.
For extra large manholes we build them if necessary in sectional or side pieces.
Although we have appended one sheet of drawing showing several forms of
manholes and transformer boxes, we do not of course confine ourselves to these as
many other forms might also be made according to requirements.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is :-
The construction of manholes, transformer boxes, and the like of some homo-
geneous insulating material such as fireclay, earthenware, or similar material, in
one piece.
TL 0-1 1
£ 1004
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicants' Agents.