An Improved Machine or Apparatus for Cleaning and Repairing Drain and other Pipes or Conduits.
Year: 1898

page_text: Date of Application, 17th June, 1898
Complete Specification Left, 12th Apr., 1899-Accepted, 13th May, 1899
An Improved Machine or Apparatus for Cleaning and Repairing
Drain and other Pipes or Conduits.
I, ROBERT GEORGE RESTALL, of 101, Marylebone Road, London, N.W., Builder
and Sanitary Engineer, do hereby declare the nature of this invention to be as
follows:-
My present invention consists of certain modifications of, and improvements
upon, the machine or apparatus forming the subject matter of my previous
Patent No. 22597 of A.D. 1893.
My said previous patent consists, firstly of a machine (Figs. 1 and 2) for
clearing and cleaning such pipes or conduits, and secondly of a machine (Figs. 3
and 4) for repairing or cementing the inner surface of such pipes or conduits when
so cleaned, both of which said machines are more or less rigid for their entire
length, such rigidity being partly maintained, as relates to Figs. 1 and 2, by
means of a metallic rod E, and as relates to Figs. 3 and 4 by the means of a
through metallic or other rigid rod E', but I have found in practice that the
said machines or apparatus while very efficient when applied to straight drains
or conduits are, by reason of the said rigidity, inoperative when applied to drains
or conduits having sharp bends or curves therein, and my present invention has
for its object such improvements or modifications of my said prior patent as will
enable the machine to be operative in drains, pipes, or conduits having such
sharp curves or bends within their lengths.
For the purposes of my present invention I employ an apparatus for first
clearing or cleaning drains or other conduits, similar to that shewn in Figs. 1
and 2 of my said previous patent, my improvements consisting in forming the
wood or other cylinder A thereat in two or any number of parts or sections of
its length, the rod or bolt E running therethrough having a like number of
joints, coinciding with and corresponding to the joints in, the said cylinder, in
order that the whole when pulled through a drain or the like may readily conform
in shape to the curves or turns therein.
In so far as relates to the repairing apparatus or machine illustrated by Figs. 3
and 4 of my said previous patent, for the purposes of my present invention I
may or may not dispense with the blocks or discs L M, and arrange that the
discs C of rubber or other resilient material may each be clamped between a pair
of metal discs, mounted upon a short length of metallic tube, the said tube having
an external screw-thread, upon each end of which is screwed a nut or nuts, which
serve to bring the said discs nearer to each other, and so clamp the resilient disc
between them.
A pair or more of resilient discs so arranged are mounted upon a metallic rod
having one or any number of universal joints formed therein, the said jointed
rod passing through the tubes of the discs and being threaded at its outer end,
thercat receives suitable nuts, each having a loop attached thereto for the reception
of ropes for pulling the machine backward and forward through the said drains

page_text: or the like, a suitable spiral spring or springs being mounted upon and surrounding
the said jointed rod between the discs of resilient material, for the purpose of
keeping the latter as far apart from each other as permitted by the last named
nuts.
For the purpose of cementing the joints, or stopping apertures in drains or the
like, my improved apparatus would be employed in substantially the same manner
as that described in relation to Figs. 3 and 4 of my said previous patent, the
improved, construction of the apparatus rendering the same adaptable for con-
forming to the curves and bends in such conduits.
Dated this 17th day of Tune 1000
GEO. THOS. HYDE,
No. 1, Broad Street Buildings Liverpool Street, E.C.,
Agent for the Applicant.
An Improved Machine or Apparatus for Cleaning and Repairing
Drain and other fipes or Conduits.
I, ROBERT GEORGE RESTALL, of 101, Marylebone Road, London, N.W., 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:-
This invention relates to an apparatus for cleaning and repairing drain and
other pipes or conduits and has for its special object to provide such an apparatus
that shall be capable of use for passage through sharp bends or curves and for
the cleaning and repair of drain pipes at curves or bends, and so that flexible
rods may be dispensed with.
The invention is an improvement upon the apparatus forming the subject matter
of Letters Patent No. 22097/93 previously granted to me, and consists in the em-
ployment of a jointed rod upon which discs are slidably mounted and are main-
tained at the utmost distance apart by means of an interposed spiral spring which
tends to maintain the jointed rod in a straight line and which ensures the
effective use of the apparatus when a jointed rod is employed.
The invention is illustrated in the accompanying drawings in which,
Figure 1 represents a front elevation of a repairing apparatus according to
the invention, and
Figure 2 is a sectional elevation corresponding thereto.
As illustrated in the accompanying drawings the apparatus consists of two
rods A. A connected together by their looped extremities a a¹ so as to be capable
of any relative radial movement in relation to each other. Upon each of these
rods sleeves B are slidably mounted upon which rubber or other flexible discs C
are provided such rubber discs being suitably mounted upon the sleeves by means
of clamping plates D and nuts E, the latter of which screw upon the extremities
of the sliding sleeves B and effectually force the plates D which bind the rubber
discs C between them. At the screw threaded extremities of each of the rods
loops Fare provided for the reception of ropes by means of which the apparatus
is caused to pass to and fro. The discs C are caused to abut against the bosses
of the loops F by means of the interposed spiral spring G which has the effect
of maintaining the jointed rod straight so that thereby the jointed rope shall not
be caught in any of the recesses in the defective pipe by reason of the joint.
The apparatus is used in similar fashion to that forming the subject matter of
the Letters Patent previously referred to, being first introduced into the pipe or

page_text: conduit to be repaired and there drawn to and fro after the cementing material
has been placed between the discs. The compression of the spring tends to
maintain the jointed rod straight and the spring has its convolutions of a larger
diameter towards its extremities as illustrated.
Although the invention has been described as applied to a repairing apparatus
it is equally applicable to cleaning apparatus whereby the drain pipe or conduit
may be first cleaned and preferably at the same time flushed prior to the use of
the repairing apparatus. The repairing apparatus previously described may be
used as a cleaning apparatus.
It is obvious that the rod may be provided of two, three or more sections jointed
or connected one to the other.
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
[ claim is:-
A repairing or cleaning apparatus for drain or other pipes or conduits sub-
stantially as and for the purpose hereinbefore described and as illustrated.
Dated Mis 14th day of April 1099.
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and
25, Cross Street, Manchester, Agents.