Improvements in and .connected with Apparatus for Testing Drains.
Year: 1895

page_text: Date of Application, 28th Dec., 1895-Accepted, 1st Feb., 1896
COMPLETE SPECIFICATION.
Improvements in and .connected with Apparatus for
Testing Drains.
I, WILLIAM HERBERT TEMPLE, of 47, Prospect Road, Scarborough, in the
County of York, Sanitary Inspector 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 improvements in and connected with apparatus for
testing drains and has for its object an improved device for holding a smoke case.
and for conducting the smoke into the drain to be tested.
According to my invention I provide a tube the upper end of which is open and
the lower end bent upwards and provided with a cap. The upper end of the said
tube, which is preferably larger in diameter than the rest of the tube and is
adapted to receive the smoke case, is provided with a cover or cap which can be.
hermetically closed by suitable means, such as, for instance, a bayonet joint.
On one side of the said tube I provide a guide or guides to receive a rod adapted.
to slide in the said guide or guides and to be locked in any desired position by
suitable means such as a thumb screw.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawing, in which :—
Figure 1 is an elevation of my improved drain testing apparatus:
Figure 2 is an elevation at right angles to Figure 1:
Figure 3 is a vertical section to an enlarged scale of the joint between the top-
of the tube and its cover:
Figure 4 is a side view of the lower part of the said cover; and,
Figure 5 is a side view of the top portion of the tube also drawn to an enlarged.
scale:
Figure 6 is a view shewing the apparatus in use.
a is the tube the lower end of which is bent upwards as shewn and provided with
a cap b. The upper end of the tube is expanded or made of larger diameter at c-
as shewn clearly in the drawing to receive the smoke case shewn in dotted lines
in Figure 3.
d is the cap or cover for the said tube, the said cover being designed to
hermetically close the upper end of the tube a to prevent the escape of smoke-
from the smoke case which occasionally bursts or leaks at the top. The joint
between the end of the tube and cover is preferably a bayonet joint, as shewn.
clearly in Figure 3, in which e and e¹ are metal rings fixed respectively in the ends
of the tube and cover, the ring e being provided with tapered lugs f,f and the
ring el with bent arms f'adapted to pass under the lugs f. g is a tube fitted to
the inside of the ring e¹ and designed to receive the smoke case and to be inserted
into the ring e when making the joint, and g' is a washer to render the joint
tight.
h, h are the guides fitted on one side of the tube a; i is the rod which slides.
therein, and is the thumb screw in the upper of the guides for fixing the rod in
any desired position.
The operation of the apparatus is as follows:-To test a drain, the cap b is.
removed from the lower end of the tube a and the latter is inserted into a gully
trap (Figure 6) containing water, the tube being drawn up until its bend fits-
against the top of the outlet of the trap as shewn. The rod is then lowered in.
2

page_text: the guides until its bottom end comes in contact with the bottom of the gully
trap when it is locked in this position by the thumb screw j. By this means the
apparatus is fixed in position for use. The cover d is then removed, a smoke case
is introduced into the same and its fuse ignited, and the cover is then fitted onto
the top of the tube a. The smoke produced in the smoke case passes down the
tube a and out from the outlet of the bent up end of the same and into the drains
which are to be tested in the usual manner.
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 :-
1. In drain testing apparatus a tube having one end bent upwards and the other
end adapted to receive a smoke case and to be hermetically closed by a suitable
cover substantially as, and for the purposes, hereinbefore described.
2. The combination with a tube of the kind described of a rod sliding in guides
on the same, substantially as, and for the purposes, hereinbefore described.
3. The improved drain testing apparatus hereinbefore described and illustrated
in the accompanying drawing.
Dated this 28th day of December 1895.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.