Improved Apparatus for Jointing and Repairing Drain and other Pipes.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improved Apparatus for Jointing and Repairing Drain and other
Pipes.
GEORGE FREDERICK RESTALL, 57, Park Road, Regent's Park, London, Sani-
tary Engineer, do hereby declare the nature of this invention to be as follows.-
This my invention is an apparatus for jointing and repairing and cementing
drain and other pipes by forcing cement or other suitable repairing material
into the joints or defective places by hydraulic or pneumatic pressure thereby
making the pipes sound and watertight. By my invention I mount on an
axially disposed rod or a cord two rubber or resilient discs which fit the pipe
closely the discs being a suitable distance apart and beyond each disc at either
end of the rod I mount a suitable airtight chamber which is less in diameter
than the rubber discs and a suitable tap is attached to the outer face of each
chamber the whole being held together on the rod or cord by loop nuts or other
suitable means. Suitable tubes are attached to the air or water chambers
through which air or water can be pumped or otherwise conveyed into them.
When air or water is pumped into the chamber or chambers at either end of
the apparatus they expand towards the rubber discs and force them towards each
other. When repairing a drain or other pipe or pipes the chambers at either
end of the apparatus being empty the two rubber discs can be pulled further
apart. The apparatus is then inserted into the drain at a manhole or where an
opening has been made and filled between the discs with a cement or other suit-
able repairing material and air or water is pumped into the chamber or chambers
at either, end of the apparatus causing the chambers to expand towards the
rubber discs thereby forcing the cement contained between the discs into the
joints or defective places as the apparatus is pulled or pushed through the drain
by cords or rods which are attached to either end of the apparatus. The pres-
sure can be regulated as desired from either end of the apparatus and at any
particular part of the drain or pipe or pipes in which it is used. I do not
bind myself entirely to the particular kind of air or water chambers as pre-
viously described but I may use any suitable hydraulic or pneumatic device by
which cement or other repairing material can be forced into joints or defective
places in drain and other pipes from the interior.
Dated this 7th day of February 1899

page_text: Improved Apparatus for Jointing and Repairing Drain and other
Pipes.
I, GEORGE FREDERICK RESTALL, Sanitary Engineer, of 57, Park Road, Regent's
Park, London, NW, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascei-
tained in and by the following statement:-
My invention consists of an apparatus for use in the jointing, repairing and
cementing of drain and other pipes whereby the joints or defective places in
the surface of the pipe are filled in with' cement or other material carried by
the apparatus and airanged to be discharged therefrom under fluid pressure
In carrying my invention into effect I mount upon a rod or tube two rubber
or other discs of the diameter of the pipe to be jointed or repaired, such discs
being arranged to slide upon the 1od or tube so as to approach to or recede
from each other. The space between the two discs when separated forms the
cement chamber and the two discs are arranged to be forced together by fluid
pressure thus compressing the cementing material and causing it to flow into
the joints, cracks or crevices occurring in the pipe. At each end of the rod or
tube I mount a suitable air tight chamber which is less in diameter than the
rubber discs and has a tap for admitting air or other fluid under pressure from
a pump or other apparatus.
Figure 1 is a sectional elevation showing one method of carrying my inven-
tion into effect The two rubber discs a, b, are mounted upon the central
tube c, and enclosed between the rigid plates d, e, f, q
The discs a, b, are
arranged to slide upon the tube c, so as to approach to or recede from each other.
The space between the two discs when separated forms the cement chamber.
At the ends of the tube air-tight chambers i, k, are formed of less diameter
than the discs a, b, and having taps 7. m, for the admission of fluid under pres-
sure Into the chamber i, k, plungers n, o, attached to the rubber discs a, b,
are fitted having the joints p, q, closed by turning in the edges of the leather
casings, r, s, to form a cup-leather joint. On the admission of fluid under
pressure through either of the taps the chambers i, k, which communicate with
the taps by the ports t, u, v, m, expand towards the rubber discs a, b, by the
movement of the plungers n, o, thus advancing the discs a, b, towards each
other and compressing the cement in the chamber h
When using my apparatus for jointing, repairing or cementing a drain, pipe
I proceed as follows:-Having inserted the apparatus in the drain through, a
manhole or other opening and separated the discs a, b, as shown in Figure 1, I
place the cement in the chamber h, and feed the apparatus into the pipe by
means of canes or cords attached to the screw ends r, y. Air water or other
fluid under pressure is now admitted through one of the taps 7, m. by a hose
pipe from a pump or other supply When using air the tap may now be closed
and the hose pipe removed If the apparatus be now pushed or pulled along
the pipe, the cement under pressure is forced out into all joints. cracks or
crevices occurring in the pipe, the discs a, b, approaching each other as the
quantity of cement in the chamber h, becomes less. When using water under
pressure I prefer to keep the tap open and the hose pipe supplying pressure
during the operation of pulling or pushing the apparatus through the pipe, the
hose pipe being fed into or withdrawn from the drain pipe as required.
The pressure can be regulated as desired from either end of the apparatus
and at any particular part of the drain or pipe in which it is used.
4

page_text: I do not limit myself to the particular kind of compressed fluid chambers
above described but may use any suitable device by which the discs may be
advanced by the agency of fluid pressure for the purpose of forcing the cement
into joints, cracks or crevices in the pipe.
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:
1. The improved apparatus for jointing and repairing drain or other pipes
consisting of two discs mounted upon a rod or tube and capable of being forced
towards each other by fluid pressure substantially as and for the purposes
described
2. In an apparatus for jointing and repairing drain or other pipes the com-
bination and arrangement of two discs mounted upon a central iod or tube,
with two fluid chambers attached to such rod or tube and capable of expansion
under fluid pressure and thus forcing the discs towards each other thereby
forcing the material contained between the discs into the joints or defective
places in the pipes substantially as herein before described and as illustrated in
the accompanying drawing.
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1800
MARKS & CLERK,
18, Southampton Buildings, London, W.C,
13, Temple Street, Birmingham, and
25, Cross Street, Manchester, Agents
MARKS & CLERK,
18, Southampton Buildings, London, W.C,
13, Temple Street, Birmingham, and
25, Cross Street, Manchester, Agents