AN IMPROVED KETTLE
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I, HENRY BARRON, Manager of the City of London Sanitary Association, of
61 Cannon Street, in the City of London, do hereby declare the nature of the said
Invention for "AN IMPROVED KETTLE," to be as follows:-
11
My Invention relates to an improved construction of kettle, which shall produce
quick boiling, and shall be without lid or spout.
My improved kettle consists of two shells, an outer and an inner one, united at
their edges, so as to form between them a heating chamber for the water. The
inner cell is in the form of a truncated cone, whilst the outer one, springing from
base of the cone with an outward curve, is brought round to the truncation of
the cone, and joined thereto, thus forming the heating chamber aforesaid. This
construction in place of tending to damp the fire, creates a draught up through the
cone, and the water being in a comparatively thin film, and spread round a large
heating surface, is raised to boiling point in a very short space of time. Though
I rely mainly upon the inner cone, the axis of which is truly vertical so as to
ensure proper and even impact of the heat, and not inclined, yet the heat also has
a certain amount of effect upon the outer shell. In order that my kettle may be
filled and emptied and relieved of steam pressure, the outer shell is bulged at one
point, and an aperture formed with an overhanging upper lip to keep out dust etc.
My kettle is provided with any suitable form of handle.
FELL & WILDING,
Agents for the Applicant.

page_text: I HENRY BARRON, Manager of the City of London Sanitary Association, of
61 Cannon Street, in the City of London, do hereby declare the nature of my
Invention for "AN IMPROVED KETTLE" 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 a simple and inexpensive construction of kettle which
has no separate aperture for filling it and therefore no loose lid and which has
moreover a comparatively large heating surface whereby a relatively small
quantity of water will be raised to boiling point in a very short space of time, the
form of the kettle being such as to create a draught and promote the combustion of
the fuel over which it is placed, instead of tending to damp the fire as ordinary
flat bottomed kettles do.
My improved kettle is of concavo-convex section and consists of two shells, an
outer one of hemispherical form which constitutes the body of the kettle, and an
inner one of truncated conical form, which constitutes the bottom of the kettle,
these two shells being placed the one inside the other and united around the edges
at their base so as to form between them a heating chamber for the water. Tho
conical bottom rises through the hemispherical body which has an aperture
corresponding to the smaller end of the cone and the two are also united around
the edges of the latter which thus leads completely through the body of the kettle
and forms a thoroughfare for the products of combustion of the fuel beneath. The
hemispherical body is provided with a spout which also constitutes the filling
orifice, and with a suitable form of handle.
In order that the Invention may be more readily understood I have illustrated
it in the accompanying Drawings forming part of this Specification in which
Figure 1 is a side elevation, Figure 2 is an underside view and Figure 3 is a
longitudinal section of the improved form of kettle.. a is the body portion of tin
plate or other material struck up of approximately hemispherical form and b is the
bottom portion, bent from sheet metal to the form of an oblique truncated cono
and its meeting edges united by a seam or it may be stamped up in one piece.
The conical bottom is united around its larger base to the base of the budy
portion a by means of a brazed or soldered lap joint as shown, its smaller end
or base being similarly united to the body portion, which is formed with a
corresponding orifice c. The conical bottom thus forms a flue leading quite
through the body of the kettle and in the chamber formed between the two shells,
the water is exposed over a large heating surface and in the form of a comparatively
thin film to the action of the fire. d. is the spout brazed or otherwise fixed in a
suitable orifice in the shell a. The spout projects into the water chamber formed
between the two shells to prevent the boiling water from escaping from the kettle
and this inwardly projecting portion is perforated on the underside to allow of the
kettle being emptied and also perforated at top.to allow the steam to escape.
the handle rivetted or brazed to the shell a. Figure 4 shows a section of a kettle
of similar form in which the outer shell is made in two halves brazed together
at ff, the spout in this case being struck up in one with the half body of the kettle
in dies of suitable form.
e is

page_text: 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:
The concavo-convex construction of a kettle formed of two shells, an outer one
of approximately hemispherical form and an inner one of truncated conical form
which leads completely through the outer one and is united thereto around its
larger and smaller base, the kettle being provided with a spout and having no
separate filling aperture and lid substantially as shown and described.
Dated this 9th day of July A.D. 1884.
HENRY BARRON.