Improvements relating to the Laying of Drain Pipes
Year: 1897

page_text: Date of Application, 20th Feb., 1897
Complete Specification Left, 22nd Nov., 1897-Accepted, 24th Dec., 1897
PROVISIONAL SPECIFICATION.
"Improvements relating to the Laying of Drain Pipes."
I, JAMES GEORGE Cox, of 8, Kerbey Street, Poplar, London. E. Sanitary
Engineer, do hereby declare the nature of this invention to be as follows:-
:―
My invention relates to improvements in the laying of drain pipes and has for
its object to enable the necessary joints to be made more effectively than is at
present possible by the ordinary system of laying, and to readily effect the laying
of the connected sections or lengths of pipes or conduits in alignment.
My invention consists in the provision of a chair or cradle for supporting the
sections or lengths of the drain pipes or conduits upon the concrete or other
foundation.
In carrying my invention into effect I provide a chair cradle or block which.
I preferably form as a brick and of a shape having a semi-circular bed to corre-
spond with the circular conformation of the drain pipe in which the drain pipe
may rest. I preferably arrange the chair having a dimension of 3 inches from
the bottom of the bed to its base and other dimensions to correspond. I pre-
ferably arrange a circumferential groove within the bed into which a corresponding
circumferential rib formed upon the drain pipe or conduit may engage and rest
or into which cement may be passed for the fixture of the pipe to the chair. I
preferably arrange the chair of sufficient width that one only may be necessary
for receiving each section of pipe, and for this purpose I provide the chair imme-
diately behind the flanged extremity of the pipe or conduit.
It will be understood that by so carrying the drain pipès all parts of the joints
when or after being made can be readily seen and any defect at once remedied,
and the alignment of the pipes can be readily ascertained by taking the upper
surface of the chair as the basis.
"
Improvements relating to the Laying of Drain Pipes."
I, JAMES GEORGE Cox, of 8 Kerby Street, Poplar, London E. Sanitary
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:-
My invention relates to improvements in the laving of drain nines and has for

page_text: its object to enable the necessary joints to be made more effectively than is at
present possible by the ordinary system of laying, and to readily effect the laying
of the connected sections or lengths of pipes or conduits in alignment.
My invention consists in the provision of a chair or cradle for supporting the
sections or lengths of the drain pipes or conduits upon the concrete or other
foundation.
In the accompanying sheet of explanatory drawings,
Figure 1 is a general view of one form of block I construct, and
Figure 2 is a similar view of a modified form of the same.
Figures 3 and 4 are plan and elevation respectively of my blocks with a pipe
length in position upon the same.
In carrying my invention into effect I provide a chair, cradle or block A. which
I preferably form as a brick and of a shape having a semi-circular bed B to
correspond with the circular conformation of the drain pipe, in which the drain
pine C may rest. I bed each chair or block upon an ordinary brick E or upon
a foundation of concrete F when so desired. I preferably arrange the chair
having a dimension of 3 inches from the bottom of the bed B to its base and other
])
dimensions to correspond. I sometimes; arrange a circumferential groove
within the bed B into which a corresponding circumferential rib formed upon
the drain pipe or conduit may engage and rest or into which cement may be
passed for the fixture of the pipe to the chair. I prefer to arrange the chair of
sufficient width that one only may be necessary for receiving each section of pipe:
and for this purpose I place the chair in position immediately behind the flanged
extremity of the pipe or conduit as shown in. Figures 3 and 4.
I make my blocks of clay, earthenware, concrete or other suitable material and
I hollow out the body of the block or otherwise vary its shape to suit the weight
and form of pipe or conduit which is to be carried upon it.
It will be understood that by so carrying the drain pipes all parts of the joints
when or after being made can be readily seen and any defect at once remedied,
and the alignment of the pipes can be readily ascertained by taking the upper
surface of the chair as the basis. The whole pipes or system of pipes can be
surrounded with concrete at one operation when my improved chairs are employed
thereby obviating the possibility of a thin layer of clay or other matter separating
the upper body of concrete from the lower portion, such as commonly occurs with
existing methods of pipe laying.
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,―
I, The improved method of laying and carrying drain or like pipes sub-
stantially as and for the purposes herein before described.
2, The improved bed or chair for carrying drain or like pipes substantially
as and for the purposes herein before described and as illustrated in the accom
panying drawings.
Dated this 22nd. day of November 1907
MARKS & CLERK
18, Southampton Buildings, London, W.C. and
13, Temple Street, Birmingham.
Agents.