IMPROVEMENTS IN SHIPS' COOKING APPARATUS
Year: 1859

page_text: LETTERS PATENT to Sir Thomas Tassell Grant, K.C.B., of 20, Chester
Terrace, Regent's Park, in the County of Middlesex, for the Invention
of "IMPROVEMENTS IN SHIPS' COOKING APPARATUS."
Sealed the 13th October 1859, and dated the 27th April 1859.
PROVISIONAL SPECIFICATION left by the said Sir Thomas Tassell Grant
at the Office of the Commissioners of Patents, with his Petition, on
the 27th April 1859.
I, Sir THOMAS TASSELL GRANT, K.C.B., of 20, Chester Terrace, Regent's
Park, in the County of Middlesex, do hereby declare the nature of my
Invention for "IMPROVEMENTS IN SHIPS' COOKING APPARATUS," to be as
follows:-
This Invention has for its object improvements in ships' cooking apparatus.
For these purposes the fire-place occupies the larger part of the front of the
boiler, the two ends or cheeks of the fire-place as well as the parts below the
ash-pit being made into water spaces constituting parts of the boiler. The
fire has bars in front, and it is capable of being closed in by two folding doors
in front. At the back of the fire is a hollow bridge or water space forming

page_text: part of the boiler, and from the front angle of the boiler near the upper part
of the fire-place descends a water space or hanging bridge forming part of the
boiler. By this arrangement the heat and products of combustion from the
fire pass over the first-mentioned bridge, then under the hanging bridge, and
then through a series of tubes which are surrounded with water, one end of
each of which tubes is fixed in the back plate of the chamber formed behind
the fire, the other end of each tube is fixed into the front plate of an enclosed
chamber at the back of the apparatus, in which chamber are formed two
ovens, which are back to back, there being a space of a few inches between
the back ends of the two ovens, and between the ovens and the sides and the
top and bottom of the chamber in which they are enclosed, and from which
chamber the heat and products of combustion after heating the ovens pass
into the chimney. Over the fire is a hot plate with suitable openings with
covers thereto. At the back of such hot plate, and rising to some height
above it, is formed an enclosed steam chamber or chambers, in which one or
more cooking vessels is or are placed or fixed, there being spaces all round
such vessel or vessels, in order that the steam in the chamber may act on all
parts of such cooking vessel or vessels, and from the lower part of which
cooking vessel or vessels, a pipe or pipes pass out at the back of the apparatus
with a cock therein to draw off the contents of the vessel or vessels, and
another pipe passes from the bottom of the steam chamber, it having a cock
on the outside to draw off the water resulting from condensation of the steam
in the steam chamber surrounding the cooking vessel. On cither side of the
steam chamber there is placed on suitable projecting brackets or supports two
kettles or vessels with a steam pipe to each, communicating with the steam
chamber before described, so that steam may be supplied to such kettles or
vessels, and such vessels are made suitable for receiving smaller vessels in
which cooking may be carried on by the heat of steam. Steam is supplied
from the boiler below the steam chamber by means of a rising pipe which
passes through the steam chamber into a bonnet or dome-shaped steam chest,
which is at its lower parts fixed to the main steam chamber, and forms part
thereof. Provision is made for indicating the supply of the water in the
boiler by a descending tube and whistle at the top of the bonnet or dome of
the steam chest.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the Executrix and Executors of Sir Thomas Tassell Grant, deceased,
in the Great Seal Patent Office on the 27th October 1859.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, EMMA
GRANT, of 20, Chester Terrace, Regent's Park, in the County of Middlesex,
Widow, THOMAS GEORGE GRANT, of the Royal Clarence Yard, Gosport, in the
County of Southampton, Storekeeper, and WILLIAM BURLEY GRANT, of Devon-
port, in the County of Devon, Lieutenant in the Royal Navy, Executrix and
Executors of Sir THOMAS TASSEL GRANT, K.C.B., late of Chester Terrace
aforesaid, who departed this life on or about the Fifteenth day of October, One
thousand eight hundred and fifty-nine, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-seventh day of April, in the year of our Lord
One thousand eight hundred and fifty-nine, in the twenty-second year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto the
said Sir Thomas Tassell Grant, Her special licence that he, the said Sir Thomas
Tassell Grant, his executors, administrators, and assigns, or such others as
he, the said Sir Thomas Tassell Grant, his 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 SHIPS' COOKING APPARATUS," upon the condition (amongst
others) that he, the said Sir Thomas Tassell Grant, his executors or admi-
nistrators, by an instrument in writing under his, 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 we, the said Emma Grant, Thomas George Grant,
and William Burley Grant, as such executrix and executors as aforesaid, do
hereby declare the nature of the said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and by
the following statement thereof, that is to say :-
This Invention has for its object improvements in ships' cooking apparatus.
For this purpose I employ an apparatus of the following construction:-It

page_text: consists of a fire-place or furnace combined with a boiler; the fire-place or
furnace is placed at the front of the boiler, and the two ends or cheeks thereof
are formed by water spaces in connection with the boiler; the bottom of the
ash-pit also is formed in a similar manner. The top of the fire-place or furnace
is formed of metal slabs which serve as a hot plate. At the front of the fire-
place or furnace are bars as in an ordinary grate, and doors are provided by
which it may be closed in when desired. The back or bridge of the fire-place
or furnace is formed by a water space also in communication with the boiler.
Behind the hollow bridge is a chamber from which a series of small tubular
smoke flues pass to a chamber at the back of the boiler, in which ovens are
placed; this chamber communicates directly with a chimney placed at the
back of the apparatus. Over the boiler a steam chamber is formed; it
receives steam from the boiler by means of a pipe ascending from the top of
the boiler, and terminating in a dome formed at the top of the steam chamber.
This arrangement is to prevent water being forced over with the steam into
the steam chamber. Within the steam chamber one or more cooking
chambers are placed, and they are supported in such a manner that a space
may be left for the steam all around the said vessel or vessels. Cocks are
provided at the exterior of the apparatus for drawing off the contents of the
cooking vessel or vessels and also the water formed by the condensation of the
steam from the steam chamber. On cach side of the steam chamber brackets
are fixed to support kettles or vessels, which are supplied with steam by steam.
pipes connecting them with the steam chamber, and these vessels receive
smaller vessels in which cooking may be carried on. A whistle is provided to
indicate should the supply of water in the boiler be allowed to fall below the
proper level.
And in order that the said Invention may be most fully understood, and
readily carried into effect, we will proceed to describe the Drawings hereunto
annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a front elevation of a ships' cooking apparatus, constructed
according to the Invention; Figure 2 is a side elevation, and Figure 3 is an
end elevation of the same; Figure 4 is a horizontal section taken through the
tubular flues and through the ovens; Figure 5 is a horizontal section taken
through the steam chamber, and the cooking vessels it contains; and
Figure 6 is a vertical and longitudinal section taken through the centre of the
apparatus.

page_text: a, a, is the fire-place or furnace; a, a, are the bottom bars thereof;
and a, a, are the front bars; a³, a³, are doors for closing the fire-place or
furnace in front when desired; b is the boiler which is supplied with water
by means of a pump; b, b¹, are water spaces, forming part of the boiler, and
serving as the cheeks or ends of the fire-place or furnace b² is
another water space forming the bottom of the ash-pit; and b³ is the back
or bridge of the fire-place or furnace, which also is a water space forming
part of the boiler; c, c, are metal plates closing in the fire at the top. These
plates serve as hot plates, and have holes through them, which are fitted with
covers c', c¹, and when these covers are removed cooking vessels may be
placed over the openings, and they are then exposed directly to the heat of
the fire. d is a chamber at the back of the bridge b³, from which the tubular
flues c, e, pass through the body of the boiler b to another chamber f, con-
taining the ovens /', f. These ovens are so supported in the chamber as
to leave space for the heated air from the fire to pass in contact with every
part of the ovens, excepting the fronts thereof, where the oven doors f, f.
are fitted. g is a chimney or flue in direct communication with the chamber /.
At the top of the boiler b a steam chamber his formed, and the steam from
the boiler passes into this chamber by the vertical pipe i. which terminates
within the dome on the top of the steam chamber h. The cooking
vessels i, i, are placed inside the steam chamber h. They are closed at the
top with suitable covers, and on the top of the steam chamber are corre-
sponding covers or lids, which are removed when it is desired to introduce the
articles to be cooked into the vessels i, j. The cocks k, k, are for the purpose
of drawing liquids out of the cooking chambers; 1, 1, are cocks for drawing off
the water formed by the condensation of the steam from the steam chamber h;
m, m, are try cocks, for ascertaining the level of the water in the boiler b;
n is a glass or indicator for the same purpose; it is of the ordinary construction.
0, 0, are vessels supported on brackets on each side of the steam chamber;
they are connected therewith by the pipes o¹, o'; they are thus supplied with
steam; at the top they are fitted with covers, in which are openings to receive
the small cooking vessels p, p. At the top of the dome h is a whistle g
communicating with a pipe q', which descends below the proper water level
in the boiler. The whistle is for the purpose of giving an alarm should the
water in the boiler fall considerably below the proper level. The end of the
pipe q' then becomes uncovered, and steam passes up it, and causes the whistle
to sound. r, r, are plates, which can be removed for the purpose of cleaning
the flues when necessary.

page_text: In some cases immediately behind the bridge b³ another or hanging bridge
is employed; it forms part of the boiler, and descends from the top of the
chamber d, and serves to deflect the flames downward after they have passed
over the bridge b³. In practice, however, the use of this hanging bridge has
not been found necessary.
In witness whereof, we, the said Emma Grant, Thomas George Grant,
and William Burley Grant, have hereunto set our hands and seals, this
Twenty-sixth day of October, in the year of our Lord One thousand
eight hundred and fifty-nine.
Executrix
Redhill Died TT: M
EMMA GRANT. (L.S.)
THOS. G. GRANT. (L.S.)
and Executors
W. B. GRANT.
(L.S.)
as aforesaid.