An Improved Sewer Interceptor for Prevention of Back Flow of Storm Water from Sewers into Houses on Low Levels and the like.
Year: 1897

page_text: This Print is in accordance with the Original Specification as it stands after
Amendment (under Section 11 of the Patents, &c. Act, 1883), as required by
the decision of the Chief Examiner of the 13th day of January 1899.
Date of Application, 19th Aug., 1897
Complete Specification Left, 19th May, 1898-Accepted, 19th Aug, 1898
An Improved Sewer Interceptor for Prevention of Back Flow of
Storm Water from Sewers into Houses on Low Levels and the
like.
We, JOHN ALFRED WALLIS, of Fernbank, London Road, Maidstone, in the County
of Kent, Builder, and CHARLES EDWARD STANDING, of No. 21, Enbrook Terrace,
Cheriton, Folkestone, in the County of Kent, Builder's Foreman, do hereby declare
the nature of this invention to be as follows:-
Our invention relates to improvements in intercepting drain traps and has for its
object the stopping of back flow of soil or storm water into houses from overcharged
low level sewers. It is very simple in construction and easy of access and being
inserted in manhole close to main drain it leaves the remaining drain pipes from
manhole to house connections as a reserve for any soil or rain water that may
accumulate during the time the main drain is overcharged. Our invention consists
of a specially constructed sewer interceptor trap in which is enclosed a copper ball,
which floats on the water in house side of trap & in the event of back flow of sewage
from main sewer rises in the direction of fresh air inlet until it rests against drain
inlet from house, which is provided with india rubber or composition seating thus
formning a perfect check to any back flow as the greater the pressure the more
effectual is the check. The ball is inserted through a renovable cover formed in the
inlet side of trap, which can also be used as a cleaning eye. The ball does not
offer any obstruction to the ordinary flow of soil into the main drain as the trap has
the same area after the ball is inserted as any other part of the drain. The trap is to
be constructed of thick stoneware thus making it as substantial as any other part of
the drain.
.
COMPLETE SPECIFICATION.
An Improved Sewer Interceptor for Prevention of Back Flow of
Storm Water from Sewers into Houses on Low Levels and the
like.
We, JOHN ALFRED WALLIS, of Fernbank, London Road, Maidstone, in the County
of Kent, Contractor, and CHARLES EDWARD STANDING, of 21, Enbrook Terrace, Cheriton,

page_text: Folkestone, Gentleman 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:-
Our invention has for its object an improved sewer interceptor for prevention of
back flow of storm water from sewers into houses on low levels and the like. The
great advantage of which is its simplicity of construction and ease of access, and while
being inserted in a manhole close to the main drain it leaves the remaining drain
pipes from manhole to house connections as a reserve for any soil or rain water which
may accumulate during the time the main drain is overcharged.
In order that our invention may be clearly understood and easily carried into
practise we have appended hereto a sheet of drawings upon which
Figure 1 is a longitudinal section through our interceptor fixed in manhole.
Figure 2 is a plan of Figure 1.
In carrying our invention into effect we provide the specially constructed sewer
interceptor trap A within which the metal ball B is enclosed.
This ball is encased in india-rubber and floats on the water at the house side of trap
so that in the event of back flow of sewage from main sewer G the ball rises in the
direction of the fresh air. inlet C until it rests against drain inlet from house. D. which
is provided with the composition sealing E thus forming a perfect check to any back
flow as the greater the pressure the more effectual is the check. The removable
cover F is provided in the inlet side of trap and this can also be used as a cleaning eye,
and by simply fixing an ordinary Y junction at end of trap at G¹ a ready
means of removing any stoppage at H between trap and sewer may be
provided.
The ball does not offer any obstruction to the ordinary flow of soil into the main
drain as the trap is shaped to have the same area with the ball in as the area.of any
other part of the drain.
We prefer to construct the trap A of thick stoneware thus making it as substantial
as any other part of the drain.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we wish it to be understood
.that we are aware that prior to the date of our application it has been proposed to
construct sewer interceptors with a ball floating on water and a seating against which
it is raised and retained by back pressure of the water, and that in such interceptors it
has also been proposed (a) to provide a single removable cover for affording access to
the ball and (b) to make the ball chainber larger than the other chamber, and in
particular we are aware of the Specifications of George Couzens and Fred Couzens
No. 18347 A.D. 1895, and Pierre Felix Richards No. 17119 A.D. 1886 and we do not
claim anything described and claimed therein, but we declare that what we
claim is :-
1st. The improved sewer interceptor for prevention of back flow of storm water from
sewers into houses on low levels and the like substantially as herein set forth and
shewn.
.
2nd. The combination of the stoneware trap A rubber covered ball B and lid F
substantially as and for the purpose herein set forth and illustrated.
T
OU
V
LEWIS WM. GOOLD,
Agent for Applicant, 5; Corporation Street, Birmingham..