Improvements in or connected with Apparatus for Heating Japanning Stoves and the like.
Year: 1899

page_text: Date of Application, 20th Mar., 1899-Accepted, 17th June, 1899
COMPLETE SPECIFICATION.
Improvements in or connected with Apparatus for Heating Japanning
Stoves and the like.
I, JOHN THOMPSON Core, of 86, Tiverton Road, Selly Oak, Birmingham, in the
County of Warwick, Hot Water Engineer, 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 is applicable to japanning enamelling or other stoves or ovens
heated by high pressure, hot water circulation when such stoves or ovens are
arranged in a series or group and consists in the first place of devices the object
of which is to enable any one or more of such stoves or ovens or any section of
such a series or group as may be arranged to work from one system of circulation
to be shut off or started again as may be desired with facility and without danger.
In the accompanying sheets of drawings to be hereinafter referred to Figure 1
is a sectional elevation of a part of a series or group of stoves or ovens arranged
and constructed in accordance with my invention and Figure 2 is a plan of the
same.
In Figure 1 Sheet 1, A, A are stoves forming part of a series or group
arranged side by side heated as shown by coils of high pressure hot water
pipes B B.
In accordance with my invention I use any ordinary coil or other furnace for
heating the system but I construct the flow and return pipes and connections in
the following manner. C and D are the main flow and return pipes respectively
which run the whole length of the series or group of stoves, and the coil or other
arrangement of pipes fitted to each stove is connected by the pipes E E with the
mains flow and return pipes as shewn. Both the upper and lower junctions of
these conuectious, are provided with suitable valves F, F, for cutting off or starting
any of the stoves without interfering with the main flows and returns. I further
connect the flow and return mains at suitable points with the pipes G G of com-
paratively smaller diameter or which again may be regulated in the bore or passage
by means of valves so constructed as to always leave a small passage to continuo
the circulation when one two or more stoves are at any time shut off. also provide in
addition to the usual expansion vessels H H one or more relief valves I, I, if
preferred. These valves may be of the dead weight equilibrium type or of the
lever or any other equivalent variety for dealing with high pressures.
The same arrangements with obvious alterations will apply to a series or group
of stoves one over the other.
In this case the flow and return mains are vertical instead of horizontal.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed I declare that what
I claim is:-
1
1. The construction, and use in connection with the high pressure hot water
heating of japanning stoves or other like stoves or ovens, such stoves or ovens
consisting of a series or group of flow and return mains running the whole extent

page_text: of such series or group each stove or section having separate connections to the
mains and controlled by valves substantially. as and for the purposes hereinbefore
described, and set forth.
2. The construction in combination therewith of bye pass pipes G of com-
paratively small diameter or which may be regulated in the bore or passage by 5
means of valves substantially as and for the purposes herein before described and
Bet forth.
Tadad 101.
1000

page_text: Date of Application, 20th Mar., 1899-Accepted, 15th July, 1899
Improvements in Devices for Regulating Temperature in Stoves
and for other purposes.
I, JOHN THOMPSON COPE, of 86, Tiverton Road, Selly Oak, Birmingham, in the
County of Warwick, Hot Water Engineer, 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 relates to improvements in devices for regulating temperaturo
in stoves for japanning enamelling or for other purposes, or in other like stoves
or ovens, and consists of devices for utilizing the expansion by heat of mercury
or of air or other gases separately or together in a suitable vessel operating a
piston in a cylinder of comparatively small diameter the piston being connected
by means of levers or other equivalent mechanism by which the movement of the
piston is increased and transmitted to a balanced valve mounted at the top of
any such stove or oven to let off the hot air when any desired temperature is
attained.
In the two accompanying sheets of explanatory drawings to be hereinafter
referred to:
Figure 1 Sheet 1 is an elevation partly in section of one form of regulator con-
structed in accordance with my invention.
Figures 2 and 3 Sheet 2 are plans of same also partly in section.
Figures 4 and 5 Sheet 2 shew modifications of the mercurial or expansion
vessel of the regulator.
The same letters of reference apply to corresponding parts throughout the wholo
of the figures.
In the arrangement shown in Figures 1, 2 and 3, A is an expansion vessel which
is preferably made of cast iron or other suitable material or alloy and is wholly
or partly filled with mercury. B is a small cylinder either cast with or attached
thereto and made of similar material. The cylinder and vessel may be lined with
aluminium, glass or other suitable material for resisting the corrosive action of
mercury. C is a piston to which is attached the short stem D. The top of this
stem is connected by means of anti-friction pivots d to the lever E, also mounted
on similar pivots e. This lever is mounted on framing F attached to the vessel A
in any convenient manner.
At the outer end of this lever is mounted a longer stem or connecting rod G
preferably of zinc or other expansive material. The lower end of this rests upon
the anti-friction pivots gg, and its upper end is connected by the pin to the
arm 3 of the regulating valve H. This valve is fixed within an opening or
flue situated at or near the top of any store or oven or any similar hot chamber,
and may be of the swing type as shewn or of any other balanced variety but of
When the
comparatively large area of opening with a moderate movement.
temperature of the stove or oven or any similar hot chamber attains the desired
maximum temperature the valve H is opened and any excess of heated air passes
outside or into any flue with which the said valve is connected. The working of

page_text: my regulator is as follows. The vessel A is charged with mercury or with a
certain volume of mercury, and air or other gas. When the stove or oven or
other chamber is heated to the desired degree the expansion of the mercury itself
or assited by the adjacent air or other gas, will force the mercury into the small
cylinder and gradually lift the piston C with its stein and attachments and open
the relief-valve H for the purposes described. The stem D is fitted with a screw
or other equivalent adjustment for the purpose of setting the apparatus to act at
uny desired temperature. When the expansion of the mercury is assisted by that
of the air or other gas, the latter occupies the space II at the top of the vessel A.
Figures 4 and 5 shew modified sections of the shape of the vessel A and the
arrangement of the air chamber II. The mercurial or expansion vessel A is
fixed inside the stove or oven and the other attachments may be fixed wholly
inside or partly inside and partly outside. It is obvious that the devices for
gearing up the piston C to the relief valve H may be varied in many ways without
departing from the nature of my invention. The piston is by preference fitted
with spring rings ce preferably of iron or steel. or may be otherwise packed with
asbestos or other suitable packing or material so as to move easily within the
cylinder B or it may simply be accurately ground in.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
1
1. The construction and use for regulating temperature in stoves and for other
purposes, of devices by which the expansion of mercury or of mercury and air or
other gases operate a piston in connection with levers or other equivalent
mechanism for operating automatically a relief valve to allow of the escape of
the hot air when the desired maximum temperature is attained substantially as
and for the purposes hereinbefore described and set forth.
Dated this 18th March 1899