Improvements in or relating to Drain and Sewer Pipe Joints.
Year: 1898

page_text: Date of Application, 23rd Nov., 1898
Complete Specification Left, 4th Feb., 1899-Accepted, 4th Mar., 1899
PROVISIONAL SPECIFICATION.
Improvements in or relating to Drain and Sewer Pipe Joints.
I, JOHN BEAMISH HAMILTON, of Tudor House, Tenby, South Wales, Surgeon and
Physician, do hereby declare the nature of this invention to be as follows:-
:-
This invention relates to drain and sewer pipe joints, and its object is to enable
such joints to be effectively cemented, particularly in that part which lies under-
neath and out of sight of the workman."
According to this invention I form a trough-shaped mould or casing of suitable
material, preferably the same as that of which the pipes are formed. This trough is
of convenient shape externally, but internally semi-circular, being curved and shaped
to fit the joint. In use the trough is placed beneath the joint and either filled with
cement before the pipes are laid or cement is poured into the trough after the pipes
have been placed in position. By this means the underside of the joint is properly
cemented the whole way round and a tight joint is obtained.
The interior of the end of each trough is preferably so shaped that it fits closely
about the pipes on either side of the joint, thus preventing the cement at the bottom
from being displaced by pressure from above.
There is also a provision by means of stops against which the end of the contained
pipe impinges which prevents any possible disturbance of or pressure on the
cement in the trough.
The shape of the trough may be varied in many respects to suit requirements.
The troughs may if desired be applied to existing faulty joints without disturbing
the pipes.
BOULT & WADE.
Agents for the Applicant.
Improvements in or relating to Drain and Sewer Pipe Joints.
I, JOHN BEAMISH HAMILTON, of Tudor House, Tenby, South Wales, Surgeon and
Physician, 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:-
This invention relates to drain and sewer pipe joints and its object is to enable
such joints to be effectively cemented, particularly in that part which lies under-
neath and out of sight of the workman.

page_text: According to this invention I form a trough-shaped mould or casing of suitable
material, preferably the same as that of which the pipes are formed. This trough is
of convenient shape externally, but internally semi-circular, being curved and shaped
to fit the joint. In use the trough is placed beneath the joint and either filled with
cement before the pipes are laid or cenient is poured into the trough after the pipes
have been placed in position. By this means the underside of the joint is properly
cemented the whole way round and a tight joint is obtained.
The interior of the end of each trough is preferably so shaped that it fits closely
about the pipes on either side of the joint, thus preventing the cement at the bottom
from being displaced by pressure from above.
There is also a provision by means of stops against which the faucet of the con-
tained pipe impinges which prevents any possible disturbance of or pressure on the
cement in the trough.
The shape of the trough may be varied in many respects to suit requirements.
The troughs may if desired be applied to existing faulty joints without disturbing
the pipes.
In the accompanying drawings
Figure 1 is a perspective view of a trough.
Figure 2 is a similar view of a modified form,
Figure 3 is a central longitudinal section of Figure 1 shewing the manner in
which a joint is made,
Figure 4 is a sectional plan, and
Figure 5 is a transverse section on the line 5-5 of Figure 3.
A trough-shaped mould or casting A of any suitable shape externally, such as
circular, rectangular or polygonal, is made of earthenware, concrete or the like.
Internally the trough is semi-circular and is shaped to fit the joint, the diameter
of the end A¹ corresponding to the outside diameter of the pipes to be jointed.
Within the end A' and adjacent to it, the diameter is increased at A2 to correspond
to the internal diameter of the faucet of a pipe, and beyond this again at A³ the
diameter corresponds to the external diameter of the faucet. Thus the parts A¹
and A form two internal contiguous collars in the trough. To prevent mistakes in
jointing, the trough is preferably made symmetrical, although it is obvious that
the part A may be dispensed with at one end.
In making a joint, a layer of cement or other binding material is placed within
the trough on the parts A2 and A3 and the faucet B of a pipe C upon the cement,
the pipe itself resting on the part A¹ thereby preventing the cement beneath from
being displaced by pressure from above. Binding material is now placed within
the faucet B, and the spigot D of the other pipe inserted into the faucet B, resting
on the other end A¹ of the trough, the joint being then finished on the upper
side in the usual way. The pipes may however first be placed.in position on the
trough and the binding material poured between them.
In order to prevent any possible disturbance of or pressure on the binding
material in the trough stops A are formed on the sides of the part A2 at the
junctions of A2 and As, the faucet B bearing against these stops.
If desired the space E may also be filled with the binding material in order to
further prevent displacement of the parts forming the joint.
The interior of the trough may be a smaller arc than a semicircle, although the
latter is the more convenient.
The trough may vary in shape and details to suit various requirements and is
especially adapted for jointing pipes that are so laid that a workman can only
get at one side.
If desired, two or more troughs may be used so as to completely encircle the joint.
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 trough A substantially as and for the purpose described.

page_text: 2. The complete pipe joint substantially as described and illustrated in Figures 3,
4 and 5 of the accompanying drawings.
3. A trough for drain pipes provided with internal collars corresponding to the
various diameters of a spigot and faucet joint.
Dated this 30th day of Januam: 1809
JOHN BEAMISH HAMILTON.
Boult & Wade,
Agents for the Applicant.