Improvements in Apparatus for the Dispensing of Disinfectants.
Year: 1892

page_text: Date of Application, 16th Nov., 1892
Complete Specification Left, 16th Aug., 1893-Accepted, 16th Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for the Dispensing of Disinfectants.
We THOMAS ROWAN, GEORGE ADLEY and FREDERICK TOLKIEN, trading as
"The Coal Tar Disinfectant Company" of 14 St. Mary Axe, in the City of
London, Manufacturing Chemists do hereby declare the nature of this invention to
be as follows:
Our invention relates to apparatus for the dispensing of disinfectants, and has for
its object the provision of means whereby such dispensing is effected either auto-
matically by the change of level in the flushing tank or in conjunction with the
mechanism for the control of the flushing liquid or by a lever independent of the
flushing tank or by other mechanism in connection with the flushing arrangements,
and in uniform and definite quantities, and with no leak or loss of disinfectant or
weakening of the strength of the fluid disinfectant during the period of time between
the flushes.
Our invention consists firstly in a valve and dispensing device of special
construction and secondly in the means for operating the said valve, so that the
above mentioned conditions are carried out.
To carry out our invention we provide a tank or vessel of any convenient form,
to hold the store of disinfecting liquid and attach to it direct or by means of a pipe,
or other connecting device, a valve of special construction. This said valve is
formed of two pistons, spaced a certain distance apart and connected together by a
rod or other convenient means.
This valve is adapted to slide in a cylindrical seating, of such a length, that the
said seating can exactly cover or more than bridge over the space between the
opposite edges of the two pistons. From this it will be seen that when the valve is
in its mid position, in the seating, a given volume between the pistons will be
enclosed by the seating.
Both pistons are provided with a valve edge or rim which engages with one end
of the cylindrical seating, that is the top piston has a valve edge to engage with the
top end of the seating and the bottom piston has a valve edge to engage with the
bottom edge of the seating, so that whichever end position the valve occupies it is
always closed.
The pistons and other parts of this said valve are of such a length as to allow of
the space between the pistons passing out of either end of the seating.
The object of this is that when for instance the valve is in its uppermost position
and in communication with the tank of disinfectant the space between the pistons is
filled with disinfecting liquid and upon the valve being moved towards its lower
position, the liquid is first imprisoned in the seating thus determining the given
amount to be dispensed, and on the valve reaching its lowest position, the upper
edge of the lower piston is some way below the edge of the cylindrical seating, and
the liquid escapes from between the pistons into the delivery pipe or tank.
The valve may be constructed either from a tube with the ends closed and with
one or more slots of the proper length arranged a proper distance between the two
ends, or it may be formed of pistons arranged on a central support.
The tank for holding the disinfectant we make so as to be placed inside or outside
the flushing tank or other device, and we may operate the valve of the disinfectant
tank by means of a float connected thereto and operated by the variation of level
in the flushing tank.
Or equivalently the valve of the disinfectant tank may be connected to and
operated by the valve mechanism of the flushing tank.

page_text: Or where there is no flushing tank the valve may have an independent operating
mechanism for itself, which may consist of a pivotted counterbalanced lever which is
connected to the valve by any means.
The operation of our device is as follows:-When a flush is to be made, the
ordinary flush mechanism is operated, and this, in turn, moves the valve of the
disinfectant tank and a given quantity of disinfectant is discharged into the flushing
tank.
Or when the float operating arrangement is used, the valve of the disinfectant
tank is preferably in its upper position when the flush tank is full; but when the
flush water is let out the float drops and brings the valve with it, thus delivering a
given quantity of disinfectant into the flush tank, to be mixed with the charge of
water during its delivery. The fresh water re-admitted in its turn operates the
float and raises the valve of the disinfectant tank into the upper position to receive
a fresh charge of disinfectant.
As the pistons fit the seating very accurately no leak takes place during the
movement of the valve, and the valve in its end positions is maintained quite tight
by the special valve surface or rim or one or other piston engaging with the valve
seat on one or other end of the cylindrical seating.
We may make the valve of the disinfectant tank adjustable as to volume which
may conveniently be done by increasing or decreasing the distance between the
cutting off edges of the valve.
Dated this 16th day of November 1892.
FELL & WILDING,
1, Queen Victoria Street, E.C., Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Apparatus for the Dispensing of Disinfectants.
We, THOMAS ROWAN, GEORGE ADLEY and FREDERICK TOLKIEN, trading as
The Coal Tar Disinfectant Co." of 14 St. Mary Axe in the City of London
Manufacturing Chemists, do hereby declare the nature of our invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement:-
Our invention relates to apparatus for the dispensing of disinfectants, and has for
its object the provision of means whereby such dispensing is effected either anto-
matically by the change of level in the Hushing tank or in conjunction with the
mechanisin for the control of the flushing liquid or by a lever independent of the
flushing tank or by other mechanism in connection with the flushing arrangements
and in uniform and definite quantities, and with no leak or loss of disinfectant or
weakening of the strength of the fluid disinfectant during the period of time between
the flushes.
Our invention consists firstly in a valve and dispensing device of special
construction and secondly in the means for operating this said valve, so that the
above mentioned conditions are carried out.
In order that my invention may be the better understood we will now proceed to
describe it in relation to the drawings hereunto annexed reference being had to the
letters & figures marked thereon. Like letters refer to like parts in the various
figures.
Figure 1 is a view of one form of our apparatus with the disinfectant tank and
dispensing valve in section.
Figure 2 is a view of a modified arrangement in which the disinfectant tank is
situated within the flush tank the valve being operated direct through the medium
of a float by the change of level of liquid in the flush tank.
Figure 3 is a sectional view of a modified construction of the dispensing valve
in which means are provided for adjusting and varying the quantity of disinfectant
to be dispensed.

page_text: To carry out our invention we provide a tank or vessel A of any convenient form
to hold the store of disinfecting liquid and attach to it direct as shown in the
Figure 1 or equivalently by means of a pipe or other connecting device, a valve B
of special construction.
The said valve B is formed of two pistons C C spaced a certain distance apart
and connected together by a tune or rod D or other convenient means.
This valve is adapted to slide in a cylindrical seating E of such a length, that
the said seating E can exactly cover or more than bridge over the space between
the opposite edges of the two pistons C¹C).
From this it will be seen that when the valve B is in its mid position in the
seating E as shewn in Fig. 3 a given volume between the pistons C¹ C¹ will be
enclosed by the seating.
Both pistons C C are provided with a valve edge or rim F which engages with
one end of the cylindrical seating E that is the top piston C has a valve edge to
engage with the top end of the seating E and the bottom piston C has a valve edge
to engage with the bottom edge of the seating E so that which ever end position
the valve occupies it is always closed.
The pistons C C and other parts of this said valve B are of such a length as to
allow of the space between the pistons passing out of either end of the seating
forming a communication with the space between the two pistons and the outside
either at the top or bottom end of the valve. The object of this is that when for
instance the valve B is in its uppermost position as shewn in Fig. 1 and in com-
munication with the tank of disinfectant A the space between the pistons is filled
with disinfecting liquid and upon the valve B being moved towards its lower
position, the liquid is first imprisoned in the seating E thus determining the given
amount to be dispensed, & on the valve B reaching its lowest position, the upper
edge of the lower piston C is some way below the lower edge of the cylindrical
seating E & the liquid escapes from between the pistons into the delivery pipe G in
Figure 1 or tank H in Figure 2.
The valve B may be constructed either from a tube with the ends closed and
with one or more slots J of the proper length arranged at a proper distance between
the two ends as shewn in Figure 1 or it may be formed of pistons arranged on a
central support as shown in Figure 3 with guiding lugs K arranged on each
piston CC to control the pistons when they get beyond the ends of the seating E.
The tank A for holding the disinfectant we make so as to be placed either inside
as in Figure 2 or outside as in Figure 1 of the flushing tank or other device and
we operate the valve of the disinfectant tank either by means of a float L connected
thereto and operated by the variation of level in the flushing tank H as in Figure 2.
Or equivalently the valve of the disinfectant tank may be connected to and operated
by the mechanism N operated by the float O in the flush tauk H as in Fig. 1 or by
the valve mechanism of the flushing tank H.
Or where there is no flushing tank the valve B may have an independent
operating mechanism for itself which may consist essentially of the mechanism
shown in Fig. 1 viz. :-of a pivotted counterbalanced lever P which is connected to
the valve B by any means such as the cord or chain R a handle and chain or cord
shown in dotted lines Figure 1 being provided for operating the valve B. The
operation of our device is as follows:-When a flush is to be made in the case
where the float operating arrangement is used as shewn in Figs. 1 & 2 the valve B
of the disinfectant tank A is preferably in its upper position when the flush tank H
is full; and when the flush water is let out of the tank H the float O in Figure 1
or L in Figure 2 drops and moves the valve B with it, thus delivering a given
quantity of disinfectant into the flush tank H or pipe G to be mixed with the
charge of water during its delivery.
The fresh water readmitted in its turn operates the float and raises the valve B
of the disinfectant tank into the upper portion to receive a fresh charge of disin-
fectant; or in the case where the ordinary flush mechanism is connected to the

page_text: .
valve, when the mechanism is operated it in turn moves the valve B of the disin-
fectant tank A and a given quantity of disinfectant is discharged into the flushing
tank.
As the pistons C C fit the seating E very accurately no leak takes place during
the movement of the valve, and the valve in its end positions is maintained quite
tight by the special valve surface or rim F on one or other piston C C, engaging
with the valve seat on one or other end of the cylindrical seatings E.
We may make the valve of the disinfectant tank adjustable as to voluine which
may conveniently be done by increasing or decreasing the distance between the
cutting off edges of the valve.
We illustrate in Figure 3 one way of carrying this into effect; the pistons C. C.
are mounted on a central spindle D, one piston being screwed thereon and locked
in place by a lock nut S so that the relative position of the pistons to one another
may be altered in order to vary the quantity of disinfectant delivered.
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be perforined, we declare that what we
claim is :-
1st. A dispensing valve consisting of two pistons or their equivalent mounted
some distance apart upon a stem and adapted to work in and be embraced by a
cylindrical casing and means for operating the same so that by the reciprocation of
the pistons in the seating the space enclosed by the pistons and the seating will be
alternately filled and emptied by matter situated on the exterior of the valve
seating, substantially as described.
2nd. In a dispensing valve as described in Claim 1 the combination of the
pistons having a valve edge upon each with a valve seating at each end of the
cylindrical seating adapted to form a joint with the said valve edge, substantially
as described.
3rd. In a dispensing apparatus the combination of a valve as claimed in Claim 1
with a float operated by the change of level of liquid in a tank, substantially as
described.
4th. In a dispensing valve as claimed in Claim 1 the arrangement of the pistons
adjustable to one another to vary the volume of disinfectant to be dispensed,
substantially as described.
5th. The construction and arrangement of a disinfectant dispensing apparatus,
substantially as described and illustrated in the accompanying drawings.
Dated this 16th day of August 1893.
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