Improvements relating to Apparatus for Heating Liquids.
Year: 1899

page_text: Date of Application 4th Nov., 1899
Complete Specification Left, 4th Aug., 1900-Accepted, 4th Feb., 1901
PROVISIONAL SPECIFICATION.
Improvements relating to Apparatus for Heating Liquids.
We, EDWARD WILLIAM PARISH, Commercial Traveller, of South Knighton,
Jeffery WilliaM EADY, Gentleman, of Springfield Road, and ALFRED PERCY
CARRYER, Chartered Accountant, of Saint Martins, all of Leicester, in the County
of Leicester, do hereby declare the nature of this invention to be as follows.-
This invention has reference to apparatus for heating liquids and relates par-
ticularly to that class of apparatus in which a central chamber or compartment
containing the liquid to be heated is surrounded by a second chamber or compait-
ment into which the liquid as it is heated can overflow and from which it can
be withdrawn as required.
The chief object of our invention consists in providing apparatus of the above
or a similar description with means whereby cool liquid can be allowed to flow
into the apparatus simultaneously with the withdrawal of the hot liquid there-
from, the quantity of the incoming liquid corresponding to the amount of hot
liquid that is withdrawn.
For this purpose we connect the tap or cock through which the hot water is
withdrawn from the apparatus to an inlet cock or valve on the pipe leading from
the water service main or from any other source of liquid supply
The con-
nection of the aforesaid tap with the aforesaid valve 18 auch that on opening the
tap to withdraw the hot liquid from the apparatus, the said inlet valve is simul-
taneously opened and a quantity of cold liquid permitted to flow through the said
valve into the apparatus, corresponding to the amount of liquid drawn through
the tap.
We prefer that the connection between the said tap and the said inlet valve
should not be a rigid one, that is to say, it should be one which while permitting
both the tap and the valve to be simultaneously operated will not interfere with
the proper fitting of the plugs of said cook and valve upon their seatings For
this purpose we may connect said plugs by means of a rod or spindle provided
with square or rectangular ends to loosely engage with correspondingly formed
cavities in the two plugs. This mode of connection enables a certain amount of
free movement of the rod or spindle longitudinally and therefore insures that each
plug shall be independent of the other in so far as its adjustment on its seat
18 concerned. This connection of the plugs to each other may obviously be modi-
fied in a variety of ways and therefor we do not wish to confine ourselves to the
use of the said rod or spindle for this purpose.
In order to regulate the pressure and quantity of liquid entering the apparatus
through the aforesaid inlet valve, we may provide it with a cavity to receive one
or more rings or perforated discs, so that the passage through which the liquid
passes into the apparatus may be more or less contracted in accordance with the
area of the outlet through which the hot liquid is withdrawn or we may provide
a tap on the inlet pipe which can be adjusted for a similar purpose
We wish it to be understood that although we have set forth our invention as

page_text: being applicable to apparatus for heating liquids in vessels of the kind stated, we
do not wish to be confined to vessels so constructed, our invention being applicable
to any liquid heating apparatus in which it is necessary or desirable to supply
a quantity of fresh liquid equivalent to the quantity of liquid withdrawn from
the apparatus, without using a ball-tap or similar contrivance
Dated this 4th dow of November 1900
HASELTINE, LAKE & Co,
45, Southampton Buildings, London, W.C.,
Agents for the Applicants.
Improvements relating to Apparatus for Heating Liquids.
We, EDWARD WILLIAM PARISH, Commercial Traveller, of South Knighton,
JEFFERY WILLIAM EADY, Gentleman, of Springfield Road, and ALFRED PERCY
CARRYER, Chartered Accountant, of Saint Martins, all of Leicester, in the County
of Leicester, 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:-
This invention has reference to apparatus for heating liquids and relates par-
ticularly to that class of apparatus in which a central chamber or compartment
containing the liquid to be heated is surrounded by a second chamber or compait-
ment into which the liquid as it is heated can overflow and from which it can
be withdrawn as required
The chief object of our invention consists in providing apparatus of the above
or a similar description with means whereby cool liquid is allowed to flow
into the apparatus simultaneously with the withdrawal of hot liquid there-
from and in quantity corresponding to the amount of the hot liquid withdrawn,
so that the apparatus 18, always kept fully supplied with liquid."
For this purpose the outlet tap or cock through which the hot water is with-
drawn from the apparatus and the inlet cock or valve on the pipe leading
from the water service main or from any other source of liquid supply, are con-
nected together in such a manner that on opening the outlet tap to withdraw
the hot liquid from the apparatus, the said inlet valve 18 simultaneously opened
and a quantity of cool liquid permitted to flow through the said inlet valve into
the apparatus, corresponding to the amount of liquid drawn through the outlet
We prefer that the connection between the outlet tap and the inlet valve should
be one which while permitting both to be simultaneously operated will not interfere
with the proper fitting of the plugs of said tap and valve upon their seatings
In order that our said invention may be clearly understood and readily carried
into effect we will describe the same more fully with reference to the accom-
panying drawings in which:-
Figure 1 is a vertical section and Figure 2 a transverse section on the line 1-1
of Figure 1, showing a liquid heating apparatus, having our improvements applied
thereto.
a is the liquid heating apparatus, 6 the outlet tap or cock, and c the inlet
cock or valve.
The liquid heating apparatus shown on the drawings consists of two com-
partments a¹ a³ arranged concentrically, the former of which terminates at its
lower end in a chamber a³ which is heated by means of a gas or other burner
arranged in the space, a beneath the said chamber. The upper end of the said

page_text: compartment a¹ 18 open to the surrounding compartment a³ and is connected by
a tiansverse passage or pipe as to the cock or tap b c 18 the inlet cock or valvo
through which the incoming cool liquid enters the lower end of the outer com-
partment a and by rising therein as it becomes heated overflows into the central
compartment a when hot liquid is withdrawn therefrom through the cock b. As
the fiquid in the chamber a' becomes heated it rises in the central compartment a¹
eady to be withdrawn through the said cock b. It will therefore be seen that
the cool liquid entering the apparatus through the cock c cannot be withdrawn
from the apparatus until it has become considerably heated and has 11sen in the
compartment a², and has overflowed into the compartment a²
The
In order to simultaneously operate the valves b and c and admit a quantity
of cool liquid to the apparatus in a quantity corresponding to the amount of hot
liquid withdrawn therefrom, we connect the plug of the outlet cock b with the
plug of the inlet cock c by means of a rod or spindle d The rod is provided
with square or rectangular ends which loosely engage with correspondingly
formed cavities or recesses in the plugs of the inlet and outlet cocks
cavity in the plug of the outlet cock b into which the upper end of the rod
enters 18 of such a length that a space is left between the inner end of said
cavity and the end of the rod The square portion on the upper end of the rod d
is so formed that it can enter to a more or less degree into the aforesaid cavity,
so that a certain amount of free longitudinal movement can take place between
the rod and the plug of the cock
This free longitudinal movement between the plug of the outlet cock and the
1od ensures that the inlet and outlet cocks shall be independent of one anothei
in so far as the adjustment of each on its seat is concerned, and while permitting
both of the cocks to be simultaneously operated, does not interfere with the
separate adjustment of the two cocks when necessary
We wish it to be understood that we do not wish to confine ourselves to the
use of the 1od or spindle for connecting the inlet and outlet cocks together as
any other means may be employed which will accomplish the simultaneous opera-
tion of the said cocks and at the same time permit them to have a certain amount
of longitudinal movement independently of each other for the purpose herein
stated.
In order to regulate the pressure and quantity of liquid entering the apparatus
through the aforesaid inlet cock, we may provide said cock with a cavity or
chamber c¹ to receive one or more perforated rings c³ The size of the openings
or perforations in these rings may vary so that by inserting one or more of them
into said cavity or chamber c¹ the passage through which the liquid flows into
the heating apparatus may be more or less diminished or contracted in accord-
ance with the area of the outlet pipe or tube through which the hot liquid 18
withdrawn from the apparatus The areas of the inlet and outlet passages or
pipes can thus be readily adjusted so that the quantity of cool liquid entering
the apparatus may not be in excess of the quantity of hot liquid being withdrawn
therefiom and vice versa.
We have described the invention as applied to apparatus for heating liquids
in vessels of the kind stated but we wish it to be understood that we do not
confine ourselves to vessels so constructed, as the invention is equally applicable
to any liquid heating apparatus in which it is necessary or desirable to supply
a quantity of fresh liquid equivalent to the quantity of liquid being withdrawn
fiom said apparatus, without using a ball-tap or similar contiivance.
Having now particularly described and ascertained the nature of our said
invention and in what manner the samo is to be performed, we declare that what
ne claim 15.-
1 A liquid heating apparatus provided with inlet and outlet valves or cocks
which are so connected together that they operate simultaneously to enable the

page_text: quantity of hot liquid withdrawn from the apparatus to be replaced by a corre-
sponding quantity of cool liquid substantially as described
2 A Liquid heating apparatus provided with a lower chamber and two con-
centric compartments above it, said compartments communicating with each
other at the upper part and the inner compartment communicating with the
Jiquid outlet substantially as and for the purpose specified.
3 The liquid heating apparatus having its parts constructed and arranged
substantially as described with reference to the accompanying drawings for the
purpose specified.
•
August 1900
HASELTINE, LAKE & Co,
45, Southampton Buildings, London, W.C.,
Agents for the Applicants