Improvements in or connected with Kettles.
Year: 1889

page_text: Date of Application, 27th Nov., 1889
Complete Specification Left, 19th Aug., 1890--Accepted, 20th Sept., 1890
PROVISIONAL SPECIFICATION.
Improvements in or connected with Kettles.
I WILLIAM CUMMINGS Junr. of 7 John Candlish Road in the Borough of Sunderland
and County of Durham, Engineer do hereby declare the nature of this invention to
be as follows:-
This invention relates to improvements in or connected with kettles and has for its
object increased heating surfaces, apparatus or arrangements for notifying automatically
low water level as well as boiling point and generally an improved arrangement or
construction or combination of parts whereby scalding may be rendered less liable to
occur and greater convenience in handling may be ensured. I obtain increased
heating surfaces by arranging an internal cross tube or tubes if necessary preferably
arranged more or less diagonally to the shell of the vessel and either tapering or
parallel in section as desired. The water surrounds the tube or tubes through which
the fire passes.
I further arrange within the kettle an internal shield extending upwards and
downwards the top of which enclosing the spout entrance is connected or jointed to
the inside of the kettle while the lower end extends towards but not to the base of the
kettle so that steam cannot find egress through the spout until a certain low water
level has been attained. In or in connection with the dome of the kettle I may place
a pipe or outlet controlled by a reed or whistle or equivalent means for ensuring by
the action thereof vibration in the air when acted on by steam so as to produce sound
and thus render boiling readily ascertainable. The kettle lid is preferably arranged to
one side so as to reduce the risk of scalding when removing or replacing same and it
may be jointed with an india-rubber or equivalent ring to admit of a certain amount
of play or elasticity of action when acted on by steam. By the above described
arrangement the spout may be placed higher up the vessel side without incurring the
disadvantages hitherto accruing to such an arrangement and this effects a further
advantage in respect of the application thereof in low grates.
Dated this 20th day of To
1000
A. CRAWHALL CHAPMAN,
3, St. Nicholas' Buildings, Newcastle-on-Tyne,
Patent Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in or connected with Kettles.
I, WILLIAM CUMMINGS Junior of 7 John Candlish Road in the Borough of
Sunderland and County of Durham, 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 relates to improvements in or connected with kettles and has for its
object increased heating surfaces, apparatus or arrangements for notifying automatically
low water level as well as boiling point and generally an improved arrangement or
construction or combination of parts whereby scalding may be rendered less liable to
occur and greater convenience in handling may be ensured. I obtain increased
heating surfaces by arranging an internal cross tube or tubes if necessary preferably
arranged more or less diagonally to the shell of the vessel and either tapering or
parallel in section as desired. The water surrounds the tube or tubes through which
the fire passes. I further arrange within the kettle an internal shield extending
upwards and downwards, the top of which enclosing the spout entrance is connected or
jointed to the inside of the kettle while the lower end extends towards but not to the
base of the kettle so that steam cannot find egress through the spout until a certain
low water level has been attained. In or in connection with the dome of the kettle I

page_text: may place a pipe or outlet controlled by a reed or whistle or equivalent means for
ensuring by the action thereof vibration in the air when acted on by steam so as to
produce sound and thus render boiling readily ascertainable.
The kettle lid is preferably arranged to one side so as to reduce the risk of scalding
when removing or replacing the same and it may if found desirable be jointed with
an india-rubber or equivalent ring to admit of a certain amount of play or elasticity of
action when acted on by steam. By the above described arrangement the spout may
be placed higher up the vessel side without incurring the disadvantages hitherto
accruing to such an arrangement and this effects a further advantage in respect of the
application thereof in low grates.
I will now fully describe my invention with reference to the accompanying
drawings in which Fig. 1. is a side sectional elevation, Fig. 2 being a plan and Fig. 3
a sectional plan on line A A in Fig. 1.
Referring to the figures a is a cross tube traversing the kettle and b is an internal
shield the top of which encloses the spout entrance the lower end extending downwards
as shown in the figures.
c is a pipe formed to act as a whistle and preferably arranged alongside the kettle
handle d, e being a lid for filling purposes situated near the side and towards the
back of the kettle.
The action and advantages of the above described arrangements may be stated as
follows;
Firstly, the cross tube greatly increases the heating surfaces whereby the liquid in
the kettle is more quickly boiled.
Secondly, the internal shield acts as a safeguard against the kettle boiling dry
because as soon as the water in the kettle reaches the low level indicated by the base
of the shield the steam in the kettle can escape freely up the interior of the shield b
through the spout fand as soon as steam is seen to issue from the spout the low level
of the water in the kettle is in part indicated.
This arrangement further enables the spout to be set higher up the kettle side and
at the same time steam is prevented from issuing from the spout as already explained.
Thirdly, as soon as boiling point is reached steam is formed which issuing through
the throat c' of the whistle c causes the latter to whistle thus notifying the boiling of
the kettle.
As soon however as the steam in the kettle can find free egress up the shield and
kettle spout as above explained the pressure in the kettle is reduced and the whistle
ceases to sound, thus indicating low water level.
Fourthly the position of the lid e facilitates the filling of the kettle and renders
scalding of the hands less liable to take place.
Having now particularly described and ascertained the nature of this my said
invention and in what manner the same is to be performed, I declare that what I
claim is :
.
1. The combination with a kettle having internal tubular heating surfaces of an
internal shield arranged and acting substantially as herein set forth.
2. The combination with a kettle having internal tubular heating surfaces and an
internal shield of a whistle the several parts being arranged and operating substantially
as and for the purposes herein set forth.
3. For indicating low water level in a kettle the arrangement or combination of
parts consisting of the internal shield and whistle device substantially as herein set forth.
4. The combination of parts constituting the improvements in kettles substantially
as and for the purposes hereinbefore described and illustrated with reference to the
accompanying drawings.
Dated this 18th day of 1000
A. CRAWHALL CHAPMAN,
3, St. Nicholas' Buildings, Newcastle-on-Tyne,
Patent Agent for Applicant.