Improved Method of Laying Drain Pipes.
Year: 1897

page_text: Improved Method of Laying Drain Pipes.
I, DAVID THOMAS HAYLOCK, of 70, Yeldham Road, Hammersmith, in the County
of London, Clerk of Works to the Guardians of the Fulham Vestry, do hereby
declare the nature of this invention to be as follows:-
The present manner of laying drain pipes does not give the necessary facilities
for making good joints, for examining them and (after testing) for remedying
defects.
My invention consists of leaving a space at each joint in the concrete bed or on
in which the pipes are laid; I call this the access pit. I form it in the concrete
bed at the time of laying in the latter by inserting moulds of the required sizes
and made in any material, in earthen or stoneware or wire; they may be in the
form of baskets and may be perforated, and then would remain and become part of
the concrete mass but in other forms they will be in the shape of blocks and be
removed from the concrete before the concrete or lime is set so as to be used
again.
Dated this 18th day of September 1897.
ALFRED HOWARD,
Applicant's Agent.
I, DAVID THOMAS HAYLOCK, of 70, Yeldham Road, Hammersmith, in the County
of London, Clerk of Works to the Guardians of the Fulham Vestry, 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 present manner of laying drain pipes does not give the necessary facilities
for making good joints for examining them, and (after testing) for remedying
defects. In "drain" " pipes " I include all kinds of earthenware and metal pipes
which are used for conveying sewage or other refuse matter in a liquid or semi
liquid state, waste water or overflow water.
When drain pipes are once laid or bedded in the ordinary manner there are no
facilities for subsequent examination of the under parts of the joints, and conse-
quently the work of caulking or otherwise mending defective joints where a
leakage happens to be in the underneath part is very difficult.
To remedy this I leave in the concrete bed on which the pipes are to be laid
holes or spaces at every joint of the pipes at the time of laying the bed, or the

page_text: foundation down, by inserting moulds of the required sizes, and made of earthenware
or stoneware wire or wood or of any other material suitable for the purpose; they
may be in the form of baskets and may be perforated, and then would remain in
the bed and become part of the concrete mass, but in other forms they will be in
the shape of blocks and be removed from the concrète before it is set so as to be
used again. I call these holes or spaces access' pits."
I do not restrict myself to any particular size or shape of the moulds: both size
and shape would depend on the nature of the pipes that were to be laid.
'
foundation down, by inserting moulds of the required sizes, and made of earthenware
or stoneware wire or wood or of any other material suitable for the purpose; they
may be in the form of baskets and may be perforated, and then would remain in
the bed and become part of the concrete mass, but in other forms they will be in
the shape of blocks and be removed from the concrète before it is set so as to be
used again. I call these holes or spaces access' pits."
«
I do not restrict myself to any particular size or shape of the moulds: both size
and shape would depend on the nature of the pipes that were to be laid.
EXPLANATION OF DRAWINGS.
Fig. 1 is a plan of a bed of concrete in a drain trench, and shows pits formed in
same for giving complete access to spigot and socket ends of pipes, particularly to
their undersides, and for caulking making and flanching the joints thereof, also
for afterwards testing and inspecting same.
A. Is the concrete bed.
B. Shows the access pits placed at the required distances.
C. Is the mould or block used for the purpose of forming the access pit.
Fig. 2 is a longitudinal section of the bed of concrete with pipe laid, joints
made, and flanched complete.
D is a thin bed of cement mortar for effectually securing the pipes from rocking
or rolling.
E shows the pipes bedded and joints made complete.
After the joints are made, tested, and inspected, the access pits are fully charged
with cement grout; this, the foundation A, the bed D, and joint material then
become one complete solid mass at the pipe's most vital part viz. the joint at the
pipe's invert.
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. Making holes or spaces in the concrete bed or foundation on which drain pipes
are laid to allow of the making flanching and examining the joints thereof as above
described or substantially similar thereto.
Dated this 16th day of June 1808