Apparatus for Automatically Supplying Disinfectants to Water Cisterns.
Year: 1894

page_text: Date of Application, 7th June, 1894
Complete Specification Left, 10th Oct., 1894-Accepted, 10th Nov., 1894
PROVISIONAL SPECIFICATION.
Apparatus for Automatically Supplying Disinfectants to Water
Cisterns.
1, HUGH MCCALLUM, of Spring Hill, Pitlochry, in the County of Perth,
Physician and Surgeon, do hereby declare the nature of this invention to be as
follows:-
My invention has for its object to provide means for automatically supplying
disinfectants to the water in flushing and other cisterns.
In carrying out my invention I arrange, over or in connection with the cistern
into which the disinfectant is to be introduced, a vessel for containing the
disinfectant. At the bottom of this vessel is a neck or channel containing two
valves, so arranged that when one is opened the other is closed and the space
between which serves to regulate the amount of disinfectant supplied from time to
time. The upper of these two valves is connected with a float in the cistern in
such a manner that when the water level in the said cistern falls below a certain
level the said upper valve will be opened, the said upper valve being normally
closed against its seat when the cistern is full. The other, or lower, valve is also
connected with a float but in such a manner that, so long as the water is at a
certain level in the said cistern, the said valve will be open whilst, when the water
falls below a certain level, the said valve will be closed.
With this arrangement it will be understood that so long as the cistern is full of
water the upper valve of the disinfectant vessel is closed and the lower valve
opened. When the cistern is emptied the lower valve is first closed and then the
upper valve is opened so that a certain quantity of the disinfectant can enter the
space between the two valves. As the cistern again filled the upper valve is
first closed and afterwards the lower valve is opened, whereby the disinfectant in
the space between the valves will flow into the cistern.
The operation before described takes place each time the cistern is emptied.
In order to suspend the operation of the apparatus I provide means for holding
up the float controlling the upper valve, for instance by attaching to the float a
chain adapted to be connected to a hook outside the cistern.
To enable the quantity of the disinfectant supplied to be adjusted the pipe or
neck forming the chamber between the two valves may be made in two parts
screwing one outo the other.
Dated the 7th day of June 1894.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Apparatus for Automatically Supplying Disinfectants to Water
Cisterns.
I, HUGH MCCALLUM, of Spring Hill, Pitlochry, in the County of Perth,
Physician and Surgeon, 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 :-
My invention has for its object to provide means for automatically supplying
disinfectants to the water in flushing-and-other cisterns, and is illustrated in the
accompanying drawings, in which:-
Figure 1 is a vertical section of one form of apparatus constructed according to
the invention for automatically supplying disinfectants to water cisterns:
Figure 2 is an elevation partly in section at right angles to Figure 1:
Figures 3 and 4 are respectively elevations at right angles to each other
illustrating a modified form of apparatus:
Figure 5 is a horizontal section on the line 5-5 Figure 3, drawn to an enlarged
scale:
Figure 6 is a section on the line 6-6, Figure 5; and,
Figure 7 is a section on the line 7-7 Figure 5 but shewing the parts in a
different position to that shewn in Figure 5.
In carrying out my invention I arrange, over or in connection with the cistern a
into which the disinfectant is to be introduced, a vessel b6 for containing the
disinfectant. Such vessel is advantageously supported above the cistern a upon
legs d, d having clips e, e which embrace the edges of the cistern and are secured
by pressure-screws f, f.
In the arrangement illustrated in Figures 1 and 2 the bottom of the vessel bis
provided with a neck or channel 'containing two valves, h and i respectively, so
arranged that when one is opened the other is closed and the space or chamber j
between which serves to regulate or measure the quantity of disinfectant supplied
from time to time. The upper one h of these two valves is connected by a rod k,
lever and chain m with a float n in the cistern a in such a mauner that when the
water in the said cistern falls below a certain level the valve h will be opened, the
said valve being normally closed against its seat when the cistern is full. The other,
or lower, valve i is also connected by an angular bar o with two floats p, p but in
such a manner that, so long as the water is at a certain level in the cistern a, the
valve will be open, whilst, when the water falls below a certain level, the said
valve will be closed.
With this arrangement it will be understood that so long as the cistern a is full
of water the upper valve h of the disinfectant vessel b is closed and the lower
valve is opened. When the cistern a is emptied the lower valve is first
closed and then the upper valve his opened so that a certain quantity of the
disinfectant can enter the space between the two valves. As the cistern a is
again filled the upper valve h is first closed and afterwards the lower valve i.is
opened, whereby the disinfectant in the space j between the valves will flow into
the cistern a.
The operation before described takes place.each time the cistera a is emptied.
In order to suspend the operation of the apparatus I provide means for holding
up the float n controlling the upper valve h, for instance as shewn by attaching to
the float n a chain 9 passing over a pulley or roller r and carrying a ring s whereby
it can be connected to a hook t outside the cistern a.
To enable the quantity of the disinfectaut supplied to be varied the pipe or
neck g forming the chamber j between the two valves h and i may be made in two
parts as shewn clearly in Figure 1 screwing one onto the other so as to be relatively
adjustable.

page_text: The arrangement of my apparatus illustrated in Figures 3 to 7 is the same as
that hereinbefore described with reference to Figures 1 and 2 except that a two-
way cock is employed in place of the two valves h and i thereby enabling me to
dispense with the use of one of the floats hereinbefore described, the chamber j
which regulates the amount of disinfectant supplied at each operation being fixed
to the under side of the disinfectant vessel b.
The chamber can be placed in communication with either of the two passages
or ways and w of the cock u by a pipe a, and is always in communication with
the top part of the vessel 6 by an air tube y. The passage in the cock u can
also be placed in communication with the disinfectant vessel b by a pipe =; and
the passage to with the cistern a by a pipe or nozzle a¹. The float is secured to
the plug of the cock u by means of a rod or lever c.
With this arrangement when the water in the cistern a falls below a certain level
the plug e' of the cock u is moved by the float into the position shewn in Figure 7
in which position the passage will open communication between the disinfectant
vessel and the chamber j which will therefore become charged with the
disinfectant. When the cistern a again becomes full the plug c¹ of the cock u is
moved by the float into the position shewn in Figure 6 in which position the
passage w will open communication between the chamber j and the cistern a
whereby the disinfectant in the chamber will flow into the cistern a.
с
To prevent the float 6' and lever e from descending too far into the cistern and
for allowing of suspending the operation of the apparatus I provide a chain d¹
attached to the float-lever c and passing through a slot in a hook a² and over a
pulley or roller e¹ on the vessel such chain carrying a pin or stop f¹ which cannot
pass through the slot and thereby prevents more than a given length of the chain
being drawn down. The free end of the chain carries a ring g' which being passed
onto the hook a² will keep the float braised and consequently render the apparatus
inoperative.
The two parts of which the chamber j is composed are arranged to slide one
within the other as shewn clearly in Figure 5 instead of screwing one onto the other
as in Figures 1 and 2.
The disinfectant vessel is advantageously provided with a removable cover h¹
having a funnel to facilitate the filling of the said vessel.
Although I have described the charging and discharging of the measuring
chamber as being effected by the rising and falling of the floats respectively, it
will be obvious that they can be effected by the reverse action of the floats.
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. An apparatus for automatically supplying disinfectants to water cisterns
comprising a vessel for containing the disinfectant, a chamber connected therewith
for regulating or measuring the quantity of disinfectant supplied from time to time
and an arrangement of valves operated by floats for respectively charging and
discharging the said chamber as the level of the water in the cistern rises and
falls, substantially as herein before described.
2. The modification of the arrangement claimed in the preceding claiming clause
wherein a two-way cock operated by a single float is employed, substantially as
hereinbefore described.
3. The improved apparatus for automatically supplying disinfectants to water
cisterns herein before described and illustrated respectively in Figures 1 and 2 and
Figures 3 to 7 of the accompanying drawings.
Dated the 10th day of October 1894
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.