Heating and Watering Greenhouses and the like Buildings.
Year: 1889

page_text: Date of Application, 26th Jan., 1889
Complete Specification Left, 12th Apr, 1389
Complete Specification Acceoted, 1st June, 1889
Heating and Watering Greenhouses and the like Buildings.
J, JOHN POAT, of Richmond Villa, St. Sampsons. Guernsey, Gentleman, do hereby
declare the nature of this invention to he as follows:-
My invention relates to that class of apparatus used for the heating of greenhouses,
conservatories, and apartments by the medium of hot water, and has the following
advantages over other systems in use:-
1st. That a supply of warm water is available for use to irrigate young plants or
otherwise.
2nd. That there is the same head of water on the hot water system as on the cold,
thereby obviating the necessity of using hand labour or other means for the distribution
of warm water for the various purposes required.
3rd. The small cost entailed and facility with which this system can be carried out
with existing ranges of hot water pipes in a short space of time, so as not to materially
interfere with the temperature of the greenhouse while the alterations in the system
are being made.
4th. That the hot and cold water services can be worked from one service of pipes
instead of two, thereby effecting a saving in the first cost of apparatus and fittings.
5th. That this system is very simple in its working and entails no danger.
6th. That the regulation of the temperature is greatly facilitated by this system.
My invention consists in the combination with a hot water system of piping of a
cold water supply at a suitable service pressure or head of water, so that this combined
system will enable hot, cold or tepid water to be withdrawn at considerable pressure
for watering plants from the circulating system of pipes, which, at the same time,
heat the greenhouse, thus conferring the hereinabove detailed advantages in use.
At each end of a duplicate part of the return pipe, I place a regulating diaphragm
or other valve, and at a point in the said pipe between these two regulating valves I
introduce the cold water supply through a tap or valve.

page_text: Along the said return pipe at one or more points between the two regulating valves,
one or more taps are inserted having screwed nozzles, to which can be attached the
watering hose, at whatever point desired.
In the pipe leading from the ordinary supply or expansion cistern a tap or valve is
inserted.
Now it will be readily understood that if the valve or tap in the pipe of the supply
cistern be closed, the tap of the cold water supply and the regulating valve at each
end of the return pipe be opened, the water in the whole system of pipes will be
under a pressure due to the head of the cold water supply, and it follows that by
manipulating the regulating valves in the return pipe and the cold water supply valve
or tap, the temperature of the water in the return pipe between the regulating
valves can be arranged as desired, such water being forced out on opening the hoso
service tap or taps again, if the two regulating valves be closed, and the cold water
supply opened, only cold water will be forced out. If it be desired to lower the
temperature of the system of hot water pipes, one regulating valve and the valve
in the supply cistern are opened and the other regulating valve shut so that
immediately the cold water supply is turned on, the hot water is forced out of the
pipes into the supply cistern and is allowed to flow away, such hot water being
replaced by the cold water thereby lowering the temperature.
A safety valve may be placed below the tap or valve of the supply cistern so as to
relieve any excess of pressure in the system of pipes should this tap or valve be
left closed by accident.
Or I may provide a usual expansion box, supported by a short pipe above the
hot water system of piping. In the said vertical connecting pipe is fitted a tap
or cock which is partially opened when warm water is being drawn off, thus
acting as a vent.
Dated this 26th day of January 1980
FELL & WILDING,
1, Queen Victoria Street, London, E.C.,
Agents for the Applicant.

page_text: Heating and Watering Greenhouses and the like Buildings.
L. JOHN POAT, of Richmond Villa, St. Sampsons, Guernsey, Gentleman, do hereby
declare the nature of this invention and in what manner the same is to bo
performed to be particularly described and ascertained in and by the following
statement :-
My invention relates to that class of apparatus used for the heating of green-
houses, conservatories, and apartments by the medium of hot water, and has the
following advantages over other systems in use :-
1. The supply of warm water is available for use to irrigate young plants or
otherwise.
2. There is the same head of water on the hot water system as on the cold, or
vice versa, thereby obviating the necessity of using hand labour or other means for
distribution of warm water for the various purposes required.
3. The small cost entailed, and facility with which this system can be carried out
with existing ranges of hot water pipes in a short space of time so as not to materially
interfere with the temperature of the greenhouse while the alterations in the system
are being made.
That the hot and cold water services can be worked from one service of pipes,
instead of two, either from the hot water service pipes direct, or the cold water service
in connection with a tank, thereby effecting a saving in the first cost of the apparatus
and fittings.
5. This system is very simple in its working and entails no danger, and the
regulation of the temperature is greatly facilitated thereby.
In order that my invention may be the better understood I now proceed to
describe the same in relation to the drawings hereunto annexed reference being had to
the letters and figures marked thereon. Like letters refer to like parts in the
drawings.
Figure 1. is a side elevation of apparatus of one way of carrying out my invention.
Figure 2. is a plan of the same.
My invention consists in the combination with a hot water system of piping and
a cold water supply at a suitable service pressure or head of water so that this
combined system will enable hot, cold or tepid water to be withdrawn at considerable
pressure for watering plants from the circulating system of pipes which at the same
time heats the greenhouses, thus conferring the herein above detailed advantages in
use.
As illustrating one method by which I carry my invention into effect I arrange in
the hot water system A. at each end of a duplicate part of the return pipe a a
regulating diaphragm or other valve C, and at a point in the said pipe between these
two regulating valves CCI introduce the cold water supply through the pipe B. and

page_text: valve b. Along the said return pipe a. between the two regulating valves CC at one or
more points I arrange one or more taps or valves D, having screwed nozzles to which
can be attached the watering hose at whichever point desired.
In the pipe leading from the ordinary supply or expansion cistern E. a tap or
valve c. is inserted. It will be readily understood that if the valve or tap e. in the
pipe of the supply cistern E. be closed, the tap b. of the cold water supply and the
two regulating valves C C in the return pipe a. be opened, the water in the whole
system of pipes will be under a pressure due to the head of the cold water supply, and
it follows that by manipulating the regulating valves in the return pipe a. and
the cold water supply valve or tap b. the temperature of the water in the return pipe a.
between the valves CC can be varied as desired.
Upon opening the hose service tap or taps D. such water is forced out, and can be
used for any of the purposes before described. Again, if the two regulating
valves C C be closed and the cold water supply pipe b. be opened only cold water will
'issue from the hose tap or taps D.
If it be desired to lower the temperature of the system of hot water pipes A., one
regulating valve C. and the valve in the supply cistern are opened and the other
regulating valve shut so that immediately the cold water supply is turned on the
hot water is forced out of the pipes into the supply cistern and is allowed to flow
away, such hot water being replaced by the cold water thereby lowering the
temperature.
It is obvious that I may obtain the pressure for watering or other purposes by
having a head on the hot water. The tap or valve e. in the pipe of the supply
cistern E. may be left partially open when warm water is being drawn, in order to
afford a vent.
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. The combination of a hot water system with a cold water system either having
sufficient working head of water so that hot, cold or tépid water can be used at a
pressure for watering or other purposes.
2. In such a hot water system, a duplicate return pipe having regulating valves on
each end, taps for water service at one or more points between the said regulating
valves, and a tap in the pipe of the cold water supply system or expansion box, in
combination with a cold water service supplied through a tap conveniently inserted
in the said duplicate return pipe.
London 19th Anil 1990