New or Improved Apparatus for Disinfecting and Deodorising Urinals, Water Closets, and the like.
Year: 1892

page_text: Date of Application, 2nd Aug., 1892
Complete Specification Left, 26th Apr., 1893-Accepted, 27th May, 1893
PROVISIONAL SPECIFICATION.
New or Improved Apparatus for Disinfecting and Deodorising
Urinals, Water Closets, and the like.
We, HENRY THOMAS BISHOP and WILLIAM FRANCIS BISHOP, of Hillgrove
Street, Bristol, Sanitary Plumbers, do hereby declare the nature of this invention
to be as follows:-
: —
Our invention relates to new or improved appliances for automatically disinfecting
and deodorising urinals, closets, and the like, supplying a stipulated quantity of
liquid disinfectant with the flushing water each time the closet or urinal is used,
thereby neutralising or destroying all noxious vapours, disinfecting any matter on
which the flushing water operates, and retaining a small quantity of the disinfecting
fluid in the pan to deodorise the surrounding air of the chamber after it has been
used.
The value of disinfectants and deodorants when used in closets and urinals,
especially for those placed in dwelling houses, is universally admitted, but the
difficulty has hitherto been to ensure their proper use at all times; it is the object
of this invention to provide appliances whereby a regulated supply of these fluids
may be conveyed with the flushing water to the closet, and at the close of the
flushing, a sufficient quantity be mixed with the water retained in the pan to
effectively deodorise the surroundings.
Our invention consists in providing a reservoir for disinfecting fluid, with an
internal syphon and air-vent arrangement, one end of the syphon being conveyed
outside the reservoir and connected to the flush pipe, the rush of water in the latter
operating the syphon, and obtaining the required quantity of disinfectant which is
mixed with the water as it passes on to the closet pan, thereby disinfecting the
discharge; and so arranging the outlet from the syphon, that a small quantity of the
fluid will flow into the pan and mix with the water retained after the flushing has
taken place.
To carry our invention into effect, we provide a reservoir of any suitable material,
such as earthenware, glass, or metal unaffected by acids, of a sufficient size to contain
a considerable supply of disinfecting fluid, having an air vent from the outside, and
an aperture for filling purposes near the top at the bottom of the reservoir a small
chamber is placed, the size of which regulates the quantity of fluid discharged at
cach flushing operation; in the upper side of the chamber a small needle hole is
made, through which the liquid passes, a drop at a time, into the chamber; a small
cavity is made at the lowest part of the chamber, and in this cavity one end of the
syphon is placed, the other end of the syphon is conveyed through the reservoir at
any convenient point, and connected by a small tube to the flushing pipe, an air
tube having an opening outside the reservoir being attached to the chamber, the
fluid will then slowly fill the chamber, and the syphon, when operated by the rush
of water in the flushing pipe, will instantly empty it, and its contents will mix with
the water in the pipe; at the termination of the flush, a slight second action of the
syphon will be set up, and the few drops that have run into the chamber during the
flush will be drawn through the syphon and mix with the small quantity of water
retained in the pan after the flush.
The various parts of our appliance being provided as described, the operation
thereof is as follows:-The reservoir being fixed in any suitable place, and the small
tube from the syphon connected to the flush pipe, the reservoir is filled with a fluid
disinfectant, which passes slowly through the needle hole to the chamber, filling it
and a portion of the syphon tube when the valve of the cistern is lifted, the rush
of water passes through the flush pipe, and actuates the syphon, which immediately

page_text: empties the chamber, and the fluid passes on with the water to the closet and
disinfects the contents, the few drops that are obtained from the syphon at the end
of the flushing, mix with the very last of the flushing water, and are retained in the
pan, thereby deodorising the surroundings and preventing any unpleasant smell
from escaping. The hole at the top of the chamber is made of such a size as to
allow the chamber to be filled in three or four minutes, so that if that interval of
time elapses between each flushing, a proper supply of disinfectant will be discharged
each time the closet is flushed.
Dated 30th day of July 1892.
J. G. WESTLAKE,
Applicants' Agent.
COMPLETE SPECIFICATION.
New or Improved Apparatus for Disinfecting and Deodorising
Urinals, Water Closets, and the like.
We, HENRY THOMAS BISHOP and WILLIAM FRANCIS BISHOP, both of
Hillgrove Street, Bristol, Sanitary Engineers 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 relates to apparatus for supplying disinfecting and deodorising
Aluid to water-closets, urinals, and the like, which consists of a reservoir to contain
a supply of the disinfectant, a small chamber being attached which will hold a
stipulated quantity of the fluid, and a syphon to automatically empty the chamber
and mingle its contents with the flushing water every time the pan is flushed, the
syphonic action being set up by the rush of water through the flush pipe: the
chamber is filled through a small hole in the top from the reservoir, and when
the chamber has been emptied by the syphon, its action is cut off by the vent pipe
from the outer air to the top of the chamber.
The accompanying sheet of drawings will illustrate the construction and operation
of our apparatus ;
Fig. 1 is a general view of a reservoir fixed near the flush pipe from the cistern
and connected thereto;
Fig. 2 is a section of the reservoir, with a syphon and annular chamber inserted
through a circular opening in the base and fastened at the top by a screw mut:
Fig. 3 is an enlarged perspective of the chamber, into which the fluid passes from
the reservoir to supply the syphon; and
Fig. 4 is a section, also on an enlarged scale, showing the details of the chamber
and syphon, the tubes being broken off for convenience of room.
The same letters of reference are used in all the figures.
A is a reservoir of glass, earthenware, metal, or other suitable material, with a
circular opening at the bottom and a small hole at the top, also a screw-threaded
hole for a plug, a near the top, through which the reservoir is filled with the disin-
fecting fluid, B is an annular chamber, in which is a small hole through which
the chamber is slowly filled from the contents of the reservoir C is a base to
support and form an integral part of the chamber: a screw-cup D with a rubber
or leather washer on the flange as shown, is inserted in the lower side of the base
to afford easy access to the chamber in case of stoppage and also to provide a small
cavity at the lowest point of the chamber into which the fluid may flow and from
which the syphon will be supplied: E and E are the legs of a syphon, E passing
through the top of the chamber into the cup D, the upper part continued to E¹
forming the other leg, which also (conveniently) passes through the top of the
chamber and through the base, where it is connected by a union to a metal or
flexible tube e which is inserted by a screw bend at any suitable place in the
flushing pipe W. A rubber washer F is put round the chamber B resting on the base C
by which a watertight joint is made when the chamber is inserted in the aperture

page_text: of the reservoir: G is a central tube which serves a double purpose, (1) to form a
vent pipe to the chamber, and (2) to support the chamber and syphon appliance by
a screw-threaded nut at the outside of the reservoir, which brings the base C
and washer F tightly against the bottom of the reservoir and holds all the parts
firmly together.
The various parts and appliances being provided as described, the reservoir is
filled and put on a shelf or bracket, as shown in Fig. 1, and the small pipe e con-
nected to the flush pipe W, and the whole appliance is ready for operation. When
the rush of water passes down the flushing pipe, a vacuum is formed in the tube e,
and the contents of the chamber immediately discharged through the tube and
mixed with the flushing water, thus disinfecting any offensive material with which
it comes into contact the diameter of the syphon tube being much greater than
the pin-hole by which the chamber is filled, the contents will be very quickly
withdrawn, and the action of the syphon cease, the supply being exhausted: the
fluid in the reservoir will however immediately commence to refill the chamber,
and by the time the flushing is terminated a few drops will have passed through
the chamber into the cup D, and these few drops of the disinfectant will be drawn
out by the syphon and flow into the pan and mix with the water retained there,
and thus deodorise the surroundings until the next flushing takes place, when the
chamber having become full of the fluid, will be ready to discharge its contents
through the syphon as before.
Instead of the leg E' of the syphon being conveyed through the reservoir to the
outside of the chamber as shown, it may be passed through an aperture in the
upper part of the reservoir, or in any other suitable direction, but the method
described appears to be the best for the purpose.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
:―
'The construction of a reservoir for fluid disinfectants, having a small chamber
inserted in or attached to the bottom which is slowly filled through a pin hole, and
quickly and automatically discharged by a syphon actuated by the rush of water
in the flushing pipe, whereby a stipulated quantity of liquid is mixed with the
water each time the pan is flushed, for the more speedy and effectual deodorisation
of water closets and the like; substantially as and for the purposes herein set
forth and described, and illustrated in the accompanying drawings.
C
*1 1000
J. G. WESTLAKE,
2, John Street, Bristol, Applicants' Agent.