Improvements in Apparatus for Testing Drains, also applicable for Disinfecting and other Purposes.
Year: 1892

page_text: Date of Application, 23rd Sept., 1892-Accepted, 3rd Dec., 1892
COMPLETE SPECIFICATION.
Improvements in Apparatus for Testing Drains, also applicable for
Disinfecting and other Purposes.
We, JOHN JONES, of 40 Sydney Street, Chelsea, in the County of Middlesex,
Builder, and PETER HOY, of 36 High Holborn, in the County of Middlesex,
Sanitary Engineer, do hereby declare the nature of this invention and in what
mauner the same is to be performed to be particularly described and ascertained in
and by the following statement :-
This invention relates to apparatus for testing drains also applicable for dis-,.
infecting and other purposes, and will be best understood by reference to the
accompanying drawings in which
Fig. 1 is a view partly in side elevation and partly in section of the apparatus
constructed according to our invention,
Fig. 2 being a view drawn to a smaller scale than that to which Figure 1 is
drawn showing the manner of using the apparatus for testing a drain.
Fig. 3 is a section on the line 3-3 of Fig. 4, which is part side elevation of the
apparatus showing the clock-work mechanism for rotating the fan.
Like letters indicate like parts throughout the drawings.
A is the case which is preferably formed of sheet-iron and provided with two
movable walls or plates A¹ and the interior of which is divided into two parts by a
diaphragm A in which is formed an opening A³. The casing A is also provided
with an outlet B fitted with the union B by which the flexible pipe C may be
connected to B. D is a box preferably constructed of sheet iron and provided on
one side with an outlet or nozzle D' adapted to pass through the before mentioned
opening and enter the socket E' of the casing of the fan E as hereinafter more
particularly described. The box D at the lower part is provided with a fixed
grate D and with a grate D³ which is capable of being drawn out of the box D
and which is provided with a vertical end plate D which closes in the opening D³
at the lower part of the plate or wall D of the box D.
The box D is provided with a removable lid D' and it is supported on brackets
or slides A secured to the case A and along which it can be drawn when it is
desired to remove it from the case A. The before mentioned fan E contained
within the casing E' is mounted on the spindle F supported in the casing E2 and a
bracket F and on which spindle is secured a pinion G with which gears a wheel G¹
receiving its rotary motion through a suitable train of wheels H from springs con-
tained in the barrels H', there being preferably two springs used in the clockwork
applied for rotating the fan although one or more than two such springs may if
necessary be used instead. The outlet Es of the fan casing E2 passes into the
before mentioned outlet B of casing A.
In employing the before described apparatus for testing a drain the box D may
be removed from the case A and filled to the required extent with preferably cotton-
waste prepared in any manner which will ensure its smouldering without bursting
into flame and preferably such as will impart to the smoke a distinctive smell; a
suitable preparation for this being to first treat the cotton-waste with lamp-black,
then steep it in a solution of saltpetre and then add a desired quantity of gum-
assafetida.
The clockwork is then wound up by means of a key fitted on the square ended
arbours H by which means the fan E will be rotated in the direction of the arrow X,
Fig. 4. The box D is then placed in position in the case A so that its nozzle Dí
passing through the opening A³ of diaphragm A2 fits tightly into the socket E' of
the fan case E. The contents of the box D then being suitably ignited the fan E
will cause the smoke issuing therefrom to be drawn from the nozzle D' into case E
021

page_text: from which it will be expelled through the outlet E³ and pass by way of B and (
to the drain to be tested. A suitable way of connecting the before described
apparatus to a drain pipe so as to ensure a tight joint therewith is shown in Figure 2.
In this figure the flexible pipe C is shown as provided at its outlet end with a
delivery nozzle C' which is surrounded by an air collar or ring C' capable of being
inflated by means of the tube C¹³.
For connecting this last described apparatus to a drain pipe such as I all that
is necessary is to insert the end of nozzle C' and air collar C (the latter in a
collapsed state) into the open end of the drain pipe I and then inflate the air collar C2
by the mouth or otherwise so that the walls of the air collar C will be pressed
against the outer surface of E' and inner surface of I and effectually prevent any
subsequent escape of smoke at this part.
The before described apparatus may be advantageously used for driving rabbits
out of their warrens by connecting said apparatus with one outlet of the warren in
the manner before described in connection with the drain pipe and it may also be
used for disinfecting purposes the box D being charged with any desired material
for giving off smoke with the necessary disinfecting properties. Besides this the
apparatus which may be modified without departing from the spirit of the invention,
may be used for other purposes.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is,―
1. In apparatus such as described the combination with a box such as D of a
clockwork-operated fan such as E substantially as described and illustrated in the
accompanying drawings.
2. In apparatus such as described the combination with a case such as A A' and
clockwork-operated fan such as E of a removable box such as D having_a
permanently fixed grated bottom such as D2 and a removable grate such as D³
substantially as described and illustrated in the accompanying drawings.
3. In apparatus such as described the combination with a box such as D and
clockwork-operated fan such as E of a flexible pipe C nozzle C¹ and inflatable air-
collar such as C² substantially as described and illustrated in the accompanying
drawings.
4. The combination and arrangement of parts constituting the complete apparatus
for testing drains disinfecting and other purposes substantially as described and
illustrated in the accompanying drawings.
Dated this 21st day of September 1892.
1094
JOHN JONES.
PETER HOY.
W. P. Thompson & Boult,
Agents for the Applicants.