or Sewerage Pipes.
Year: 1886

page_text: Date of Application, 24th July, 1886.
Complete Left, 19th May, 1887.
Complete Accepted, 21st June, 1887.
RESERV
or Sewerage Pipes.
I, JOSEPH POTTS of 241 St. Vincent Street, Glasgow, in the County of Lanark,
North Britain, Civil Engineer do hereby declare the nature of this invention to be
as follows:
This Invention, which relates to certain improvements in the construction, bedding
and laying of drain or sewerage pipes, has for its object to provide a solid and
reliable foundation for the same whereby it is insured that the pipes will be
permanently maintained at their proper level or position without liability to fracture
of the pipes or their joints as is the case with such pipes as at present constructed
and laid.
The Invention consists in providing a cradle situated at the underside of each pipe
and extending the full or nearly the full length thereof, whereby a sufficient length
and breadth of flat, or practically flat, bearing surface is obtained.
The cradle may be formed in one piece with each length of pipe or it may be
formed separately therefrom. When formed separately, it may be connected to the
pipe by Portland or other cement or mortar and such cradles are or may be formed
of the same material as the pipes themselves, for example of fire-clay or earthenware
or they may be formed of cement or concrete and the pipes and cradles may be laid
in concretę.
Dated this Tante third day of July 1886
ST. JOHN V. DAY,
115, St. Vincent Street, Glasgow,
Petitioner's Agent.

page_text: COMPLETE SPECIFICATION.
Improvements in the Construction, Bedding, and Laying of Drain
or Sewerage Pipes.
I, JOSEPH POTTS of 241 St. Vincent Street, Glasgow, in the County of Lanark,
North Britain, Civil 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, which relates to certain improvements in the construction, bedding
and laying of drain or sewerage pipes, has for its object to provide a solid and reliable
foundation for the same whereby it is insured that the pipes will be permanently
maintained at their proper level or position without liability to fracture of the pipes
or their joints as is the case with such pipes as hitherto constructed and laid, the
lessening of the liability of the said pipes to fracture being a result of the construction
of their bottom or underpart according to my Invention, that is to say, such bottom
or underpart being much stronger than in such pipes as hitherto made.
The Invention consists in providing a cradle situated at the underside of each pipe
and extending the full or nearly the full length thereof, and of a depth not extending
below the outer part or periphery of the faucet and whereby a sufficient length and
breadth of flat or practically flat continuous bearing surface is obtained.
The cradle may be formed in one piece with each length of pipe or it may be
formed separately therefrom. When formed separately it may be connected to the
pipe by Portland or other cement or mortar and such cradles are or may be formed of
the same material as the pipes themselves, for example of fire clay or earthenware or
they may be formed of cement or concrete and the pipes and cradles may be laid in
concrete.
In order that my Invention may be properly understood and readily carried into
effect, I will now proceed to describe the drawings hereunto annexed.
On Figure 1, of the annexed drawings are shewn in side elevation a portion of the
improved drain or sewerage pipes constructed according to my Invention as they
appear when laid in situ that is to say, joined together as constituting a portion of a
drain or sewer.
Figure 2, is a longitudinal section of the same.
Figure 3, is an end elevation of the faucet end of one of my said improved drain or
sewerage pipes, and
Figure 4, is a transverse section of one of the said pipes.
At the underside of each of these improved drain or sewerage pipes A, is a hollow
whose edges are inclined inwards whereby the four edges of such hollow constitute a
dovetail recess B, as will be seen by reference to the Figures 2 and 4 more especially.
The fire clay forming the edges of this dovetailed hollow or recess extends nearly the
whole length of each pipe that is to say, from the faucet end C, up to within a distance
from the spigot end D, which leaves a sufficient length of such spigot end D, to fill

page_text: into the faucet C, of an adjacent pipe. In this way when the cement or other
material used for filling up or making the joint of each spigot and faucet is filled in
each such joint the improved drain or sewerage pipes so constructed have a con-
tinuous bed or bearing surface in the ground wherein they are laid and whereby a
solid and reliable foundation of the same is obtained. To render such foundation
more stable the dovetail hollow under each pipe is filled up with concrete or cement
as shewn by Figures 2 and 4 of the annexed drawings and by thus constructing the
said pipes, that is to say with the thin edge of fire-clay to form the hollow for
receiving the concrete in place of making the foundation a solid lump of fire clay the
difficulties and extra cost which would be involved in the construction and firing of
such pipes if a thick solid lump of fire-clay were used instead of the narrow ridges
constituting the dovetailed hollow are overcome.
Having now particularly described and ascertained the nature of my said Invention
and in what manner the same is to be performed, I declare that what I claim is :-
The improvements in the constructing bedding and laying of drain or sewerage
pipes wherein a continuous flat foundation or bed for the same is obtained by con-
structing a dovetail or equivalently shaped hollow or recess on the underside of such
pipes such recess being filled solidly with concrete or cement substantially as herein
before described and shewn upon the annexed drawings, the foundation or bed not
extending below the under rim or periphery of the faucet of the pipes.
ST. JOHN V. DAY,
Applicant's Agent.