A METHOD OB APPARATUS FOR HEATING APARTMENTS
Year: 1831

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD
TREVITHICK, of Saint Aith, in the County of Cornwall, Engineer, send greeting.
WHEREAS His present most Excellent Majesty King William the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing, date
at Westminster, the Twenty-first day of February, in the first year of His reign,
did for Himself, His heirs and successors, give and grant unto me, the said
Richard Trevithick, Iis especial licence, sole privilege and authority, that I,
the said Richard Trevithick, my exors, adñiors, and assigns, and such others as
I, the said Richard Trevithick, my exors, adñiors, or assigns, should at any time
agree with, and no others, from time to time and at all times during the term
of years
therein mentioned, should and lawfully might make, use, exercise, and
vend, within England, Wales, and the Town of Berwick upon Tweed, my
Invention of "A METHOD OB APPARATUS FOR HEATING APARTMENTS;" in which
said Letters Patent is contained a proviso that I, the said Richard Trevithick,
shall cause a particular description of the nature of my said Invention, and in
what manner the same is to be performed, to be inrolled in His said Majesty's
High Court of Chancery within six calendar months next and immediately
after the said in part recited Letters Patent, as in and by the same, reference
being thereunto had, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Richard Trevithick, do hereby declare that the nature of my said Invention of
a method or apparatus for heating apartments, and the manner in which the
same is to be carried into effect, is shewn by the following Drawings and
description, where Figure 1 represents a longitudinal vertical section through

page_text: the middle of a metallic vessel capable of containing a considerable quantity
of water, with a fire-place in the inside, surrounded with water in all parts
except at the doorway and at an opening where the smoke may pass off into a
common chimney. Fig. 2, a vertical section near the fire door, at right angles
to the section shewn at Fig. 1; with the sections are also shewn wheels and
handles, which lie out of the planes of the sections. The letters of reference
indicate the same parts in both Figures. a, the vessel; b, the space for con-
taining the water; c, the fire-place; d, the fire bars, or grating; e, the ash pit;
f, an inner door, to prevent the air from entering over the fire, yet allow it to
pass into the ash-pit, and thence up to the fire through the grating; g, an outer
door, to be shut when the fire is to be extinguished; h, a chimney or flue, to
convey the smoke into a common chimney; this flue may be removed when
the water boils, and then the opening of the flue may be shut, to keep in the
heat, either by a door or by a plug fitting the opening; k, the cover of the
vessel, having a rim all around, within which iron cement is to be driven to
make the vessel steam-tight; 1, a hole in the middle of the cover, into which a
plug is dropped having a fluted stem and a flat head ground steam-tight upon
the cover; this plug or valve is for the purpose of allowing the escape of steam
if it should be raised above boiling point, and the valve is taken out when it
may be necessary to pour water into the vessel; m, four wheels, on which the
vessel may be easily removed from one room to another; n, two handles, to
facilitate the removal. To use this apparatus for the warming of an apartment,
the vessel is nearly filled with water, and placed so near to a chimney in
another room, if more convenient, that the flue piece h may convey away the
smoke; a fire is then lighted upon the grating d, and continued till the water
boils, when the flue piece is taken away, and the flue opening stopped with the
plug or door, and also the outer fire door closed. In this state the apparatus
is drawn into the apartment to be warmed, where it will continue for many
hours to give off a most agreeable heat without any of that offensive odour
usually experienced from stoves heated by an enclosed fire. Figures 3, 4, 5,
and 6 represent another form of my apparatus for heating churches or other
large buildings. Figure 3, a vertical section from A to B, of Figures 5 and 6,
with a representation of the flue and its flanch, which lie beyond that section
and the fire doorway and its flanch, which lie nearer, and also the four wheels,
two of which are on each side of the section. Figure 5, a horizontal section
from E to F, of Figures 3 and 4. Figure 6, a horizontal section, from G to H
of Figures 3 and 4, with a view of the four handles situated at a higher level
than the section, and of the fire bars at a lower level; the same letters of
reference signify the same parts in all the four Figures. a, the outer case of

page_text: the water vessel; b, the cover; c, the space for water; d, the fire-place and
flue; e, the fire bars, made in two pieces, to be introduced through the fire
doorway; f, the ash-pit; g, the fire door; h, pipes open at top and bottom,
cemented into holes in the bottom, and in the cover of the water vessel; these
pipes are to admit a current of air up through them, in order the more speedily
carry
the heat into the building; k, the aperture in the cover, to supply the
vessel with water, and the plug to keep in the steam; 1, four wheels, on which
the whole is moved, each wheel revolving in a recess cast in the bottom of tho
outer case, as represented by dotted lines in Figures 3 and 4; m, four handles';
n, the flanches of the fire doorway and of the flue, represented in Figure 4 by
dotted lines. A pipe to communicate with a chimney while the water is being
heated must be made to suit locality, and therefore cannot require any descrip-
tion. This apparatus can be heated in a vestry room, and the fire door and
flue closed and then wheeled into the church, where it will soon diffuse a most
comfortable warmth; or the heat may be kept up while standing in its place by
having a constant communication with a chimney, and thus diffuse a much
more salubrious heat than can be obtained by metallic or earthen stoves heated
immediately by the fire.
In witness whereof, I, the said Richard Trevithick, have hereunto set my
hand and seal, this Nineteenth day of August, in the year of our Lord
One thousand eight hundred and thirty-one