In- PROVEMENTS IN TEA AND COFFEE POTS AND URNS
Year: 1865

page_text: PROVISIONAL SPECIFICATION left by the said Thomas Brown at the
Ollice of the Commissioners of Patents, with his Petition. on the 27th
July 1865
I, THOMAS BROWN, of No. 4. Dagmar Road, South Hackney, in the t'ounty
of Middlesex, do hereby declare the nature of the said Invention for "In-
PROVEMENTS IN TEA AND COFFEE POTS AND URNS," to be as follows:
The object of my Invention is in prevent the radiation of heat from the
contents of teapots, coffeepots, and urns. in order to preserve the desired
temperature of the contained quids: and the said Invention consists in
providing these vessels with an interior lining secured thereto by any suitable
means, and in such a manner that a steam or water tight space is formed
around the vessel containing the liquid desired to be kept hot, which space is
[Price Sil.]

page_text: filled with hot water or steam introduced into this space by means of suitable
valves or openings fixed in the exterior casing of the vessel in any convenient
position In some of these vessels it will be found desirable to provide means
for the escape of the surplus steam that may be generated within the com-
partment or space between the exterior casing and interior lining.
The most convenient mode of constructing these vessels according to my
Invention will necessarily vary somewhat with their character and shape, and
they may be formed of metals, warc, or other suitable material.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Thomas Brown in the Great Seal Patent Office on the 1
27th January 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
BROWN, of No. 4. Dagmar Road, South Hackney, in the County of Middle-
sex, send greeting
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-seventh day of July, in the year of our Lord
One thousand eight hundred and sixty-five, in the twenty-ninth year of
Her reign. did, for Herself. Her heirs and successors, given and grant unto
me, the said Thomas Brown, Her special licence that T, the said Thomas
Brown, my executors, administrators, and assigns, or such others as I, the
said Thomas Brown, my executors, administrators, and assigns, should at
any time agree with, and no others, from time to time and at all times
thereafter during the term therein expressed, should and lawfully might
make, use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands. and Isle of Man, an Invention for
"IMPROVEMENTS IN TEA AND COFFEE POTS AND URNS," upon the condition (amongst
others) that I, the said Thomas Brown, my executors or administrators,
by an instrument in writing under my, or their, or one of their hands and
seals, should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and cause the
same to be filed in the Great Seal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Thomas Brown, do hereby declare the
nature of my said Invention, and in what manner the same is to be performed,

page_text: to be particularly described and ascertained in and by the following state-
ment. reference being had to the accompanying Sheet of Drawings. of which
Fig. I represents the plan of the top of a teapot. Fig. 2 an elevation, and
Fig. 3 a vertical section of the same. Like letters refer to corresponding
parts in each of the Figures.
The chief object of my Invention is to prevent the radiation of heat from
the contents of tea and coffee pots and urns, in order to preserve the desired
temperature of the contained liquids. The said Invention consists in providing
these vessels with an interior lining A. secured to the exterior casing B by
studs or stays C. soldered between the said lining and casing, or by other
suitable means. A steam and water tight space or compartment D is thus
formed around the vessel. The portion of the space or compartment D at the
bottom of the said vessel is divided from the remainder of the said space by
extending the bottom sheet of the interior lining A beyond the sides thereof.
The edges of this plate are turned over to form a flange a. by which the bottom
plate is soldered to the side of the outer casing B. The bottom portion of
the space D is preferably filled with hot water poured in through the pipe-or
tube E. which extends through the top of the teapot or other vessel. the said
pipe being closed when required by the valve or cover F, or by a screw plug,
or other suitable means. The sides of the space or compartment D extending
round the teapot or other vessel are filled either with air or steam, or with
sawdust, or other similar non-conducting material. This prevents the radiation
of heat from the contents of the interior portion G. the temperature of the
said contents being still further preserved at the required degree by the
absorption of heat from the hot water contained in the lower portion of the
space or compartment D. Instead of filling the bottom of the space or com-
partment with hot water, as above described. the whole of the said space may
be filled with air, or with sawdust, or other similar non-conducting substance,
which preserves the temperature of the contents of the vessel in a great
measure, though not so effectually as when the bottom of the space or com-
partment is filled with hot water The tube E is only necessary when the
bottom of the space D is filled with hot water.
In some cases it may be found desirable to provide a valve or other suitable
means for the escape of the surplus steam that may be generated within the
space or compartment D. though with vessels constructed for ordinary use this
means of escape has not been found necessary.
Having thus fully described my improvements, and shown how the same
may be conveniently and advantageously carried into practice, I claim as my

page_text: Invention the space or compartment formed in a teapot, coffeepot, or urn.
for the purpose and substantially in the manner described.
In witness whereof. 1. the said Thomas Brown, have hereunto set my
hand and seal. this Twenty-seventh day of January. in the year of
Our Lord One thousand eight hundred and sixty-six.
Witness,
WILLIAM ROBERT LAKE,
"International Patent Office."
8. Southampton Buildings, W.C.
THOMAS BROWN. (S.)