Improvements in Kettles and other Vessels for Heating Water or other Liquids.
Year: 1886

page_text: Date of Application, 20th Dec., 1886.
Complete Left, 20th Sept., 1887.
Complete Accepted, 21st Oct., 1887.
RESER
PROVISIONAL SPECIFICATION.
Improvements in Kettles and other Vessels for Heating Water or
other Liquids.
I CHARLES DARRAH of the firm of Baxendale & Co. of Miller Street, Manchester,
Manufacturers, do hereby declare the nature of my invention to be as follows:—
This invention consists in increasing the heating surface of kettles and particularly
for use upon gas or other enclosed stoves by the application to the bottom thereof of
bent or curved tubes projecting downwards towards the heating medium, one extremity
of each of these tubes communicating with the bottom of the vessel and the other being
carried up preferably a short distance inside so as to create a current of the liquid
being heated through such tubes.
I also form a projecting rim around the outside of the bottom of the kettle upon
which the kettle may stand say upon an enclosed stove and which serves to keep in
the heat, the rim being however perforated at intervals to ensure the flame having free
access to the bottom of the kettle and to promote a current of the hot gases
therethrough.
These improvements are equally applicable to other vessels employed for heating.
liquids.

page_text: COMPLETE SPECIFICATION.
Improvements in Kettles and other Vessels for Heating Water or
other Liquids.
I CHARLES DARRAH of the firm of Baxendale & Co. of Miller Street, Manchester,
Manufacturers, do hereby declare the nature of my 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 consists in increasing the heating surface of kettles and particularly
for use upon gas or other enclosed stoves by the application to the bottom thereof of
bent or curved tubes projecting downwards towards the heating medium, one extremity
of each of these tubes communicating with the bottom of the vessel and the other
being carried up preferably a short distance inside so as to create a current of the
liquid being heated through such tubes.
I also form a projecting rim around the outside of the bottom of the kettle upon
which the kettle may stand say upon an enclosed stove and which serves to keep in
the heat, the rim being however perforated at intervals to ensure the flame having
free access to the bottom of the kettle and to promote a current of the hot gases
therethrough.
On the accompanying drawing Fig. 1. is a side sectional view of a domestic kettle
with my improvements applied and Fig. 2 is a sectional plan of the same.
Fig. 3. is a side sectional view and Fig. 4. a perspective exterior view of a larger
kettle embracing my improvements and suitable for hotels, restaurants and other
places requiring a large supply of hot water.
In Figs. 1. and 2. A. is the body of the kettle which is of the ordinary construction
and material being fitted with a lid B. and having the usual spout C. The bottom of
the improved kettle is arranged with a number of bent or curved tubes D. projecting
downwards as illustrated. It will be observed by referring to Fig. 1. that the one
extremity of each of these tubes marked E is connected flush with the bottom F of
the kettle whilst the other extremity of the same tubes marked G is carried up a short
distance inside the kettle. In this manner I form a communication between the tubes
and the interior of the kettle and secure a current of the liquid being heated through
the tubes.
And in order that the kettle shall be able to stand rigidly say upon the top of an
enclosed stove I surround the bottom of the kettle with a rim H which is by
proferance perforated at intervals to ensure the flame and heated products of com-
bustion having free access to the outside of the tubes and to the bottom of the
kettle.
In this manner I increase to a considerable extent the heating surface of the kettle
and expedite the boiling of the same. My improved kettle is capable of being
constructed of cast or sheet metal.

page_text: In Figs. 3 and 4. the construction and arrangement of the bottom of the kettle
(except as to shape and size) is the same as that herein before described and the same
letters of reference are used to indicate similar parts.
It will be apparent that these improvements are equally applicable to other vessels
employed for heating liquids.
Having thus particularly described and ascertained the nature of my invention and
in what manner the same is to be performed I declare that what I claim is :-
1st. The use and application of projecting tubes to the bottom surface of domestic
and other kettles and other vessels for heating liquids substantially as and for the
purposes hereinbefore described and illustrated on the accompanying drawings.
2nd. The improved construction of kettles substantially as herein before described
and illustrated on the accompanying drawing.
JOHN G. WILSON,
Agent for the Applicant.