Improved Method of and Means for Inserting Junctions or Replacing Damaged Pipes in Existing Sewers without Disturbing same.
Year: 1897

page_text: Date of Application, 14th June, 1897
Complete Specification Left, 14th Mar., 1898-Accepted, 7th May, 1898
PROVISIONAL SPECIFICATION.
Improved Method of and Means for Inserting Junctions or Replacing
Damaged Pipes in Existing Sewers without Disturbing same.
I, ARTHUR WAKEFIELD, of 39, Victoria Street, in the City of Westminster,
Sanitary Engineer, do hereby declare the nature of this invention to be as
follows:
When it is necessary to take or break out a single pipe in a sewer or a con-
tinuous length of earthenware or like pipes say for the purpose of inserting a
junction pipe or in the event of a single pipe or several pipes being damaged it is
found to be difficult or impossible to effect this and replace the pipe or pipes
without disturbing a considerable portion of the sewer and so rendering it more or
less liable to leakage or further breakage.
Now by my present invention I desire to provide a means whereby a junction
or other pipe or its equivalent may be effectively inserted without disturbing the
other portion of the sewer.
In carrying out my invention I break up the pipe which is desired to be removed
and in the place of which it is desired to insert a junction pipe or length-or a
damaged pipe which is required to be removed and which would be replaced by
means of my invention. For this purpose I provide an invert consisting say of
one half of the pipe formed so that the upper edges are swelled or bellied out to
allow of a flange or socket to be formed therein or thereon running the whole
length of the pipe except spigot and being carried round the socket of the same a
channel groove or
pocket being formed of sufficient width to allow of the edges of
the upper half of the pipe to rest in the pocket thus made flush with the sewer and
for a filling in of mastic or cement behind same.
The upper half of the divided pipe has the Y or single junction formed on it or
it may be a plain half pipe.
The invert is fixed as follows. The pipe to be removed is broken up without
disturbing the adjacent pipe if possible and the ground or soil below removed for a
few inches under position of broken pipe. My invert is then placed with its socket
end over the crown of the spigot end of the adjacent pipe and its spigot end is
inserted in the socket of the opposite pipe-the invert is then revolved round the
adjacent pipe ends internally and externally until it assumes the position of the
removed pipe without disturbing the adjacent pipes. The ground or soil is now
replaced beneath it and rammed and the lower half of that portion of the sewer is
restored. It now only remains for the upper portion or half having in or on it
the junction (or without it) to be placed over the invert with its edges or arms rest-
ing in the pocket and the space to be filled up with cement or the like when the
sewer is again effective and little or no damage done thereto.
Dated this 14th day of June 1897.
STANLEY, POPPLEWELL & Co.,
7 and 8, Southampton Buildings, Chancery Lane, London.
Chartered Patent Agents.

page_text: Improved Method of and Means for Inserting Junctions or Replacing
Damaged Pipes in Existing Sewers without Disturbing same.
I, ARTHUR WAKEFIELD, of 39, Victoria Street, in the City of Westminster,
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:-
When it is necessary to take or break out a single pipe in a sewer or a con-
tinuous length of earthenware or like pipes, say for the purpose of 'inserting a
junction pipe, or in the event of a single pipe or several pipes being damaged it is
found to be difficult or impossible to effect this and replace the pipe or pipes
without disturbing a considerable portion of the sewer and so rendering it more or
less liable to leakage or further breakage.
Now, by my present invention, I desire to provide a means whereby a junction
or other pipe or its equivalent may be effectively inserted without disturbing the
other portion of the sewer, and in order to more clearly explain the nature of my
said invention I have attached to this specification a drawing shewing my appli-
ances, Figure 1 being the upper portion or crown carrying a junction and removed
from its bed. Figure 2 shewing the lower portion or invert placed in position
between two pipes and ready to receive the upper portion or crown, (Figure 1).
- or a
In carrying out my invention, I break up the pipe which is desired to be removed
and in the place of which it is desired to insert a junction pipe or length-
damaged pipe which is required to be removed and replaced by means of my
invention. For this purpose I provide an invert A, Figure 2, consisting, say, of
one half of a pipe formed so that the upper edges are swelled or bellied out as BB
to allow of a flange or socket to be formed therein or thereon running the whole
length of the pipe except spigot, and being carried round the socket end of the
same, a channel, groove, or pocket being formed of sufficient width to allow of the
edges of the upper half of the pipe to rest in the pocket C thus made flush with
the sewer and for a filling in of mastic or cement behind same. The upper half of
the divided pipe, Figure 1, has the Y or single junction formed on it or it may be
a plain half pipe. The invert is fixed as follows. The pipe to be removed is
broken up without disturbing the adjacent pipes if possible, and the ground or
soil below removed for a few inches under position of broken pipe. My invert is
then placed with its socket end D over the crown of the spigot end E of the adjacent
pipe and its spigot end F is inserted in the socket of the opposite pipe G. The
invert is then revolved round the adjacent pipe ends internally and externally until
it assumes the position of the removed pipe, as in Figure 2, without disturbing the
adjacent pipes. The ground or soil is now replaced beneath it and rammed and
the lower half of that portion of the sewer is restored. It now only remains for the
upper portion or half having in or on it the junction (or without it) to be placed
over the invert with its edges or arms H resting in the pockets C and the space to
be filled up with cement or the like when the sewer is again effective and little or
no damage done thereto.
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. The method of and means for inserting junctions or the equivalents for
ordinary sanitary pipes between two such pipes already in position without disturb

page_text: ing the same, substantially as hereinbefore described and as illustrated by the
accompanying drawings.
2. A sanitary pipe made in two longitudinal portions, the invert provided along
its edges with a seating for ensuring a satisfactory joint with the upper portion or
crown, the latter carrying a junction or equivalent or not as may be desired, sub-
stantially as and for the purposes hereinbefore set forth and illustrated by the
accompanying drawings.
Dated this 12th day of March 1898.
STANLEY, POPPLEWELL & Co.,
Chartered Patent Agents.