Liquids according to the Temperature thereof.
Year: 1887

page_text: Date of Application, 15th Oct., 1887
Complete Left, 1st Dec:, 1887
Complete Accepted, 20th Jan., 1888
Liquids according to the Temperature thereof.
We ALFRED BUSH WILLWAY, of Drawbridge, Bristol, Somerset, Engineer and
EDMUND MOON of 12 Lower Park Row, Bristol, Somerset, Engineer, do hereby
declare the nature of this invention to be as follows:-
The object of our invention is an improved apparatus for regulating temperature.
applicable also for regulating the gas supply to water heating and like apparatus and
for regulating the flow or passage of steam, gases, or liquids according to the
temperature thereof and is based upon the well known principle of the variation of
expansion of different metals.
.
According to our invention we arrange in a box or casing a coil of metal of two
different expansive natures and through the centre of the coil we pass a pipe conveying
steam. The coil terminates in a tail piece or end on which is placed a cushion or valve
working in connection with an outlet from the box or casing which is also provided
with an inlet aperture.
The action of the apparatus is as follows-when the steam is passed through the
tube in the centre of the coil the difference of expansion between the two metals causes
the metal strip to uncoil, raising the valve or cushion and closing or partially closing
the outlet aperture.
The invention may be worked without steam by applying the heat direct to the coil
and the metal strip may take any form other than a coil that may be convenient for
the purpose to which it is applied.
Instead of a single coil of two metals two distinct coils of two metals can be arranged
for operating the one valve.
Dated this 15th day of October 1887.
H. GARDNER,
166, Fleet Street, London,
Agent for the said A. B. Willway
and E. Moon1.

page_text: Improved Apparatus for Regulating Temperature, Applicable also
for Regulating the Gas Supply to Water Heating and like
Apparatus and for Regulating the Flow or Passage of Gases or
Liquids according to the Temperature thereof.
We, ALFRED BUSH WILLWAY, of Drawbridge, Bristol, Somerset, Engineer, and
EDMUND MOON, of 12 Lower Park Row, Bristol, Somerset, 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 :-
The object of our invention is an improved apparatus for regulating temperature
applicable also for regulating the gas supply to water heating and like apparatus and
for regulating the flow or passage of gases or liquids according to the temperature
thereof and is based upon the well known principle of the variation of expansion of
different metals.
According to our invention we arrange in a box or casing a coil of metal of two
different expansive natures and through the centre of the coil we pass a pipe conveying
steam water or other fluid, the coil terminates in a tail piece or end on which is placed
a cushion or valve working in connection with an outlet from the box or casing which
is also provided with an inlet aperture.
The action of the apparatus is as follows: when the steam or other fluid is passed
through the tube in the centre of the coil, the difference of expansion between the two
metals causes the metal strip to uncoil, raising the valve or cushion and closing or
partially closing the outlet aperture.
The invention may be worked without steam by applying the heat direct to the coil
and the metal strip may take any form other than a coil that may be convenient for
the purpose to which it is applied.
Instead of a single coil of two metals, two distinct coils of two metals can be
arranged for operating the one valve.
Our invention will be understood by the annexed drawings, in which at Figure 1,
we show a box A into which, gas is admitted by the pipe B and passes through to the
outlet pipe C. The nozzle D of this pipe C has below it a cone shaped valve E resting
on the tail end F of a strip composed of two metals, say, copper and zinc having
different degrees of expansion whereby the strip F is very sensitive to the action of
heat, such as that from steam when allowed to enter the box A by the pipe G, this
having the coiled end of the strip F secured to it so that as the strip of the two metals
partake of the heat, the coil has a tendency to uncurl consequently the end F lifts and
puts the valve E into close contact with the nozzle D and temporarilly reduces the flow
of gas into the pipe C until the strip F reassumes its normal condition that happening
as soon as the steam in the pipe G is cut off.
Figure 2 represents another form of box A provided with a steam pipe G having
the coil attached the tail end F of said coiled strip having a spring button H for

page_text: closing the passage into the nozzle D, said nozzle being adjustable by means of the
pinch nut I after the nozzle is turned by its stem J.
The application of our coiled strip composed of two metals to a liquid heater is
indicated at Figure 3, the arrangement of the coil being substantially the same as that
described with reference to the foregoing Figures, so that when the water in the
vessel K boils from the heat of the gas ring L, the steam generated passes down the
pipe M into the box A and the sensitive character of the coil and strip F causes
the valve H to shut off the nozzle D, so that the gas which has entered by the pipe B
is checked in its flow so as to reduce or entirely extinguish the flame at the ring L.
The pipe B is provided with a pilot jet N to relight the ring L so soon as the fresh
flow of gas arrives at the ring L'after the removal of the button H from its contact
with D.
By this means the water in the vessel K can be kept just below boiling point so as
to retain the heat in the contents of the inner vessel P.
Thus far the invention will be understood as applied for determining the flow or
passage of steam gas air liquids and fluids, the employment of gas being given as an
example only.
Figure 4 shows the box A perforated and applied to the wall Q of a room so that
when the temperature gets too high, the heated air passes through the perforations of
the box and acts upon coil of metal which partaking of the heat causes the tail piece F
to push the cap R away from the aperture S to allow the heated air to escape the
temperature of the room being regulated thereby.
Figure 5 shows a modification of Figure 4 where a folding flap or shutter R is
actuated by the strip F through the link or rod T.
In all the foregoing Figures, we have shown a single strip of two metals as actuating
the valves but at Figure 6 we show an example of two coiled strips acting upon a
single rod T for opening and closing a Louvre ventilator U but other forms of
ventilators can be affixed...
According to Figure 7, instead of making the strip of coiled form we make it from two
distinct combined strips F, F1, of S shape, so that when said strip partakes of the heat
whether admitted through a perforated box or by steam admitted into a close box, the
end F acts to close the passage into the pipe C.
We are aware that two metals of different expansive natures have before been em-
ployed for regulating temperature in buildings and also for regulating the flow of gas
but in those cases the expansion has been produced from an end on action for opening
or closing the passage therefore we do not claim broadly the application of two such
metals but
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed we declare that what we
claim is :-
A sensitive regulator composed of two metals in combined form and coiled or made
of zig-zag shape (from two distinct strips of combined metal) as shown in the annexed
drawings for regulating temperature in dwellings, and buildings, applicable also for
determining the flow or passage of steam, gas air liquids and fluids, as hereinbefore
described.
H. GARDNER,
166, Fleet Street, London,
Agent for the said A. B. Willway
and E. Moon.