An Improvement in Domestic Water Heating and Cooking Utensils.
Year: 1889

page_text: COMPLETE SPECIFICATION.
An Improvement in Domestic Water Heating and Cooking Utensils.
I WILLIAM BLAKELY of Vernon, Princess Road, Bournemouth West, Dorsetshire,
Estate Agent, 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 for its object to increase the heating surface of domestic water
heating and cooking utensils; and also to prevent radiation from the sides; and the
invention consists essentially in fluting the bottom of the vessel either circularly or
radially and also in fluting the sides of the vessel, so as to expose a greater area of
surface to the action of the fire and also retard the progress of the heated gases in
contact with such vessel.
Reference is to be had to the accompanying drawings forming part of this Specifica-
tion, which illustrates the invention by way of example only. Figure 1 is a sectional
elevation, and figure 2 a bottom view of a utensil having the bottom fluted circularly
in accordance with this invention. I have not illustrated a vessel with the bottom
radially fluted, neither are the flutings in the sides illustrated, but it will be understood
that my invention comprises both these features.
The bottom a would be fluted with concentric ridges or fluted radially, by
stamping between dies, etc., or otherwise. Or, instead of concentric ridges, the
bottom may have a continuous spiral ridge stamped in it. The sides may also be
fluted horizontally or vertically, the flutings or corrugations in the latter case being
deeper at the bottom edge and gradually tapering off to nothing at, or near, the
rim of the vessel, and the vessel thus constructed may be encased in a plain or fluted
metal jacket b, in order to prevent radiation of heat from the sides. There would be
a space between the sides of the vessel and the jacket b into which the heat would
ascend through the opening between the sides of the vessel and the jacket b. At the
top 6, I should provide a removable ring or rim fitting tightly round the top so
as to close the space between the vessel and its jacket as in figure 3, which ring
could be removed in order to enable the soot to be cleaned out, or the jacket might
be hung on the upper edge of the vessel as in figure 1. This ring might also be

page_text: "
provided with a lip or flange forming a gutta of V or other convenient form, as
seen in figure 3, to catch the water or milk which may boil over when the vessel
is in use on open fires, kitcheners, petroleum or gas stoves.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner performed, I declare that what I claim is :-
:―
1st. A cooking utensil whose bottom and sides are fluted either circularly, spirally,
or radially, as and for the purpose specified.
2nd. In combination with a cooking vessel whose sides are fluted, as specified, a
jacket secured to the vessel, and a lip or flange forming a gutter and extending around
the upper edge of the vessel, substantially as and for the purpose specified.
Dated this 12th day of February 1889