An Improved Drain Testing Apparatus.
Year: 1891

page_text: printed as amended in accordance with the decision of the Comptroller-General,
dated the 25th day of January, 1900.
Date of Application, 9th Mar., 1891
Complete Specification Left, 13th Nov., 1891-Accepted, 19th Dec., 1891
An Improved Drain Testing Apparatus.
THOMAS KEMP, Bridge House, 237, Cold Harbour Lane, Brixton, S.W., in the
County of Surrey, Sanitaty Engineer, do hereby declare the nature of this invention
to be as follows:-
The drain tester is constructed to pass a chemical of strong odor into the drain
without the aid of a machine. It consist of a small glass tube to contain the
chemical and fitted with a coil spring on the outside and an india rubber cap which
s fimly held on the top of the tube by a paper tape passing over same and attached
to the spring which seals up the contents. By placing the tester in a gully or
closet trap it is easily washed into the drain the distant required by a cord attached.
The tape becomes wet and weak by passing through the water in the trap and by
the force of the spring the tape is broken and the cap forced off. Therefore the
contents of the tube is discharged inside the drain to discover unsound pipes and
connections which are easily detected by the odor of the chemical escaping there-
from.
17
THOMAS KEMP, Budge House, 237, Cold Harbour Lane, Brixton, S.W., in the
County of Surrey, Sauntary Engineer, do hereby declare the nature of this invention
and in what inauner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
This invention consists of a small air tight composition or glass tube (A) with
a collar (B) forming a shoulder for a steel coil spring (C) which is drawn up to same
by a loose stout paper collar (D) and securely held by paper band (E) which is
attached to collar (D) and passing over an india rubber cap (F) which is firmly held
on top of tube by the power of the spring (C) preventing any escape of the contents
of tube which is a chemical of strong odour and smoke producer. » A tape is
secured to spring (C) passing through cap (F) with loop (G) for attaching a string
to lower the tester into gully or W.C. trap, which after being washed through the
[Price 8d.]

page_text: trap and the result obtained the string may be drawn back with spring (C) and
cap (F) attached.
By
The apparatus now being complete I explain the use and action of same.
attaching a piece of string about two yards long to the loop (G) securing other end
of string to prevent the tester being drawn too far into the drain, lower the tester
into W.C. or gully trap, then instantly throw down a pail of hot water which will
wash the tester through the trap into the drain. The paper band (E) becoming
wet & weak by passing through the water in the trap and by the force of the
spring (C) the band (E) suddenly breaks, releasing the cap (F) and simultaneously
discharges the contents of the tube into the drain to discover unsound pipes and
connections, which are easily detected by the odour of the chemical oozing from the
defective parts. after After the result is obtained (which will take about fifteen
minutes) the spring (C) and cap (F) may be diawn back by the string as a proof
that the contents of the tube has been discharged into the drain satisfactorily.
Having now particularly described and ascertamed the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. An improved drain tester the action and results of which are substantially as
described.
22. The improved drain tester hereinbefore described wherein the action of a spring
on the paper band which holds or seals the tester causes the release of the chemical
substantially as described.
(+)-An-improved-drain-tester:
()-The-netion-and-results--of n-drain-tester-substantially-as-described in the
specification.
(3.) The-nction of-the-spring-on the paper-band-m-sealing-up-and--releasing the
ehemical-substantially as described in-the-specifiention:
Dated this 13th November 1891.