Improved Method of and Apparatus for Cleaning, Cementing, and Repairing Drain and other Pipes.
Year: 1893

page_text: Date of Application, 25th Nov., 1893
Complete Specification Left, 22nd Aug., 1894-Accepted, 13th Oct., 1894
PROVISIONAL SPECIFICATION.
Improved Method of and Apparatus for Cleaning, Cementing, and
Repairing Drain and other Pipes.
I, ROBERT GEORGE RESTALL, of 101 Marylebone Road in the County of
London, Builder and Sanitary Engineer, do hereby declare the nature of this
invention to be as follows:-
This my invention has reference to an improved method of and apparatus for
cleaning, cementing, and repairing drain and other pipes; the object of the inven-
tion being to provide simple and ready means for cleaning, cementing the joints of,
and stopping apertures in drains and pipes without the necessity of taking them up
from the ground for the purpose.
In carrying out my invention, I first employ a short length of wood or metal of
round section and of less diameter than the pipes to be cleaned or repaired. A
metal bolt extends through the aforesaid piece of wood and on the ends of the
same rubber discs,-of larger diameter than the piece of wood,-are suitably
secured.
When about to clean or repair a drain, this apparatus is drawn to and fro
through the drain by means of a cord or other means; the drain being flushed with
water at the same time.
I then employ another apparatus, which consists of a metal rod having an eye
at one end and a screw-nut at the other end. A small disc is mounted on the rod
midway its length, and on either side thereof are spiral springs. Beyond the
springs, at each end of the rod, is a wooden or metal disc of slightly less
diameter than the pipes to be repaired. Suitable rubber or other flexible discs
fitting the pipes, are suitably secured to the outer faces of the last-named discs,
and the whole is kept together upon the rod by the nut thereon. A suitable bail
or loop is fitted to each of the outer discs to enable the apparatus to be drawn
through the pipes by means of cords or other suitable means.
When cementing the joints or stopping apertures in a drain, the apparatus is
partly inserted in the drain at a man-hole, or at a place where one pipe has been
removed for the purpose, and cement is filled into the space between the discs
aforementioned. The apparatus is then drawn through the drain by means of a
cord having one end fastened to the bail of one of the discs at one end of the
apparatus, and another cord attached to the eye of the bolt at the other end of
the apparatus. When the cords are pulled taut to draw the apparatus through
the drain, the discs are caused to contract towards each other and force the cement
contained between them into all the crevices of the series of pipes.
T
0 of Natamber 1892

page_text: Improved Method of and Apparatus for Cleaning, Cementing, and
Repairing Drain and other Pipes.
I, ROBERT GEORGE RESTALL, of 101 Marylebone Road, in the County of
London, Builder and 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:-
My invention relates to an improved method of, and apparatus for cleaning,
cementing, and otherwise repairing the joints and other defective parts of drain
and other pipes, and has for its object to provide a simple and ready means for
effecting this, and stopping all cracks and extraneous apertures in such conduits
from the inner side, without the necessity of taking them up from the ground for
that purpose.
In order that my invention and the manner in which the same is employed
may be fully and clearly understood I have hereunto appended a sheet of drawings
of which
Figs. 1 and 2 are external view and longitudinal section respectively of my
improved device for clearing or cleaning drain and other pipes or conduits.
Figs. 3 and 5 are external view and longitudinal section respectively, of my
improved apparatus for effecting repairs to such or similar pipes or conduits.
It frequently occurs during the laying of drain and similar pipes, that a certain
portion of the cement used in fixing the joints, of same, will ooze through or
percolate between the end of one pipe and its neighbour, more especially if any
portion of the end of the inner pipe has been chipped or broken away, with the
result, that the portion of cement that has oozed through will stand out or extend
into the passage of the pipe, and this or these frequently cause stoppage, by reason
of it or them arresting small portions of solid matter, that would have passed
through had the interior of the conduit been perfectly smooth, and such matter
accumulating forms a solid mass that no extent of flushing will remove, and
hitherto no other means has been known for removing the cause of such
obstructions than that of opening the ground and taking up length after length of
piping until the defective one can be reached, and to prevent such percolation of
cement in the first instance, or to remove the same if existing, and repair the
aperture or apertures caused by its removal, or from other causes, without taking
up the pipes as hitherto, is, as previously stated, the object and purpose of my
invention.
The apparatus illustrated by Figs. 1 and 2 consists of a short length of wood,
metal or other hard material Á, perfectly circular in cross section and of slightly
less diameter than the pipes or other conduit to be cleaned or repaired. Upon
each end of A is a disc of rubber, leather or other resilient material C, of larger
diameter than A, and these are retained in position by circular metallic plates D,
mounted upon a metal bolt E which extends longitudinally through A, and
protrudes a suitable distance beyond the plates D, and is provided at one end with
a ring or eye F, to which a rope or rod may be attached, the opposite end of E
being threaded for a suitable distance for receiving a nut G by which the whole is
held rigidly together.
When a drain or other conduit is to be cleaned or repaired or both, this
apparatus would be first drawn to and fro therethrough, if necessary, but in most
cases the drawing of this through only will be sufficient to remove all obstructions,
and any cement protuberances that may exist upon the inner surface of the pipes,
but if thought necessary that this should be again drawn back, an eye may be
screwed upon the opposite end with or without the nut G, so that a rope or rod
may be attached thereto. This apparatus may be usefully employed for passing

page_text: through drains or other conduits when first laid in order to remove any
protuberances of cement that may percolate through the joints as previous
mentioned. Preferably the drain should be flushed when using this apparatus for
cleansing purposes.
When the joints of a drain or other conduit are defective, or when apertures,
holes or other leaky places exist therein and are to be repaired, and the apparatus
Figs. 1 and 2 has been passed therethrough, I then employ the apparatus illustrated
by Figs. 3 and 4 which is constructed as follows.
cane,
This consists of a rod E', which may be rigid and of metal, or flexible and made of
vulcanite or other similar or suitable material capable of bending to accommodate
curves in the pipe or other conduit, and is provided with a ring or eye Fl at one
end, the opposite end being threaded for a suitable distance for the reception of a
screw eye H, and if necessary a lock nut to retain the same in position, such for
instance as G in Fig. 1. Upon the centre of E' is mounted loosely a small wooden
or other disc J, and on each side of this, surrounding E', are spiral springs K, one
end of each of which abuts against J, while their opposite ends abut against
wooden or metallic discs L, capable of sliding upon the rod E', these being slightly
less in diameter than the pipes or other conduit to be repaired, each of which is
provided with an annular groove M, and has fixed thereto discs of rubber, leather
or other resilient material C, larger in diameter than the discs L, and capable of
fitting the pipes or other conduit, these being secured in position by metallic
circular plates N screwed to the discs L, the whole being kept together upon the
rod E', and slightly compressing the springs K, by means of the screw eye H.
Suitable wire or other hand holds O, is provided at each end of the apparatus,
driven or screwed into, or otherwise attached to the discs C.
When cementing the joints or stopping apertures in a drain or other conduit, a
cord, rope, cane or rod would be connected to each end of the apparatus, one to
the eye Fi, and the other to the screw eye H, and at a man-hole, or at a place
where one length of pipe had been removed for the purpose, one of said cords,
ropes, canes or rods would be passed through the drain to a similar opening, the
apparatus would then be inserted into the pipe or conduit from the first opening,
and suitable cement or other material be poured into the space between the discs L,
and when this is filled, the apparatus would be pushed into the drain or other
conduit by the hand hold O. The apparatus would then be drawn through the
pipes or conduit by means of the cord or the like therein, and if necessary with-
drawn by the cord or the like at the opposite end of the apparatus, and when.
either of the said cords or the like were pulled taut to draw the apparatus through,
the discs L would be "drawn closer together, and by reason of the airtight fit of
the flexible discs C, the cement or the like would be forced into the defective
joints, apertures, cracks or crevices in the pipes or conduit, and so effect their
stoppage and the general repair of the drain without the need of removing the
same from the ground.
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.
Ist. In an improved method of and means for cleaning, cementing, and repairing
drain pipes and other conduits, without removing them from the ground, the
construction and use of the herein described apparatus, connected, combined and
operating substantially as herein set forth and shewn by the accompanying
drawings.
+
2nd. In an improved apparatus for cleaning drains and other conduits, and
removing obstructions therefrom or thereon, the combination of a cylindrical
block A, having upon each end a rubber, leather or other resilient disc C, retained
in position by metallic plates D, the whole being pierced longitudinally by a
metallic rod E, having upon one end an eye or ring F, the opposite end being
threaded and carrying a nut G, or screw, eye H or both, connected and operating

page_text: substantially as and for the purposes stated, and shewn by Figs. 1 and 2 of the
accompanying drawings.
3rd. In an improved apparatus for cementing and repairing drains and other
conduits without removing them from the ground, the combination of a rigid or
flexible rod E', having at one end a ring or eye F¹, the opposite end being
threaded for carrying a screw eye H, and nut G, and upon which is loosely
mounted, centrally of its length, a wooden or other disc J, against which abuts
one end of a pair of spiral springs K, surrounding E¹, the opposite ends of said
springs abutting against wooden or metallic discs L, also mounted loosely upon E',
each of said discs being provided with a groove M, and having upon their outer
faces a disc of rubber, leather or other resilient material C, retained thereon by
metallic plates N screwed to L, and each provided with a wire or other hand
hold O, the whole being held firmly together by the screw eye H, and if necessary
further secured by a lock nut such as G, in Figs. 1 and 2 connected and operating
in combination with suitable cords, ropes, canes or rods, substantially as and for
the purposes herein described and shewn by Figs. 3 and 4 of the accompanying
drawings.
Dated thin and day of August 1804
GEO. THOS. HYDE,
1, Broad Street Buildings, Liverpool Street, London, E.C.,
Agent for the Applicant.