IMPROVEMENTS IN APPARATUS FOR VENTILA- TING FURNACES. DRYING ROOMS STABLES KITCHENS AND OTHER PLACES." PROVISIONAL SPECIFICATION
Year: 1861

page_text: LETTERS PATENT to Michel Francois Antoine Thibault de Menonville,
of Numero 42, Rue Laffitte, Paris, in the Empire of France, Manu-
facturer, for the Invention of "IMPROVEMENTS IN APPARATUS FOR VENTILA-
TING FURNACES. DRYING ROOMS STABLES KITCHENS AND OTHER PLACES."
PROVISIONAL SPECIFICATION left by the said Michel Francois Antoine
Thibault de Menonville at the Office of the Commissioners of Patents,
with his Petition, on the 20th June 1861.
I, MICHEL FRANCOIS ANTOINE THIBAULT DE MENONVILLE, of Numero 42,
Rue Laffitte, Paris, in the Empire of France, Manufacturer, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN APPARATUS FOR
VENTILATING FURNACES, DRYING ROOMS, STABLES, KITCHENS, AND OTHER PLACES,"
to be as follows:-
My Invention consists of a ventilator suitable to furnaces, drying rooms,
stables, kitchens, and all other places where steam or foul air arises which it
is desirable to remove.
The ventilator consists of a sort of cage or deep frame of zinc, furnished on
one side with panes of glass, in one or more of which a fan ventilator is
adapted; this frame of zinc is fixed an to opening in the window or other suit-
able place, and drawing in the vapour the latter becomes condensed by contact

page_text: with the zinc, and falling in water escapes by openings made at the lower part
of the frame; the form and size of the apparatus may vary to suit the places
where it is to be adapted.
By means of this simple apparatus stoves, drying rooms, stables, and other
similar places can be relieved of a large portion of humidity without their
heat being much diminished.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Michel Francois Antoine Thibault de Menonvillo in the
Great Seal Patent Office on the 17th December 1861.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, MICHEL
FRANCOIS ANTOINE THIBAULT DE MENONVILLE, of Numero 42, Rue Laffitte,
Paris, in the Empire of France, Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twentieth day of June, in the year of our Lord
One thousand eight hundred and sixty-one, in the twenty-fifth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Michel Francois Antonie Thibault de Menonville, Her special
licence that I, the said Michel Francois Antoine Thibault de Menonville,
my executors, administrators, and assigns, or such others as I, the said
Michel Francois Antoine Thibault de Menonville, my executors, "administra-
tors, 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 APPARATUS FOR VENTILATING FURNACES, DRYING
ROOMS, STABLES, KITCHINS, AND OTHER PLACES," upon the condition (amongst
others) that I, the said Michel Francois Antoine Thibault de Menonville,
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 Michel Francois Antoine Thibault
de Menonville, do hereby declare the nature of my said Invention, and in
what manner the same is to be performed, to be particularly described

page_text: and ascertained in and by the following statement, and accompanying Drawing
that is to say:-
My Invention relates to improvements in apparatus for ventilating furnaces
drying rooms, stables, kitchins, and other places, no matter their size or how
built.
.
By reference to the accompanying Drawing, the construction of the improved
ventilator will be readily understood.
Fig. 1 represents the ventilator, which consists of a window, the panes of
which are set in a frame of zinc or other suitable metal, and in one or more
of which a fan ventilator A is fixed, as shown in the annexed Drawing; round
the sides of this window a deep zinc frame C, C, C, C, is fixed, having at the
bottom two or more small holes B, B, to admit of the water escaping which is
formed by the steam and other vapour condensing by coming in contact with
the metal, sides, which are cold from exposure to the outer air.
The apparatus can be of any required size or shape to suit the building in
which it is to be adapted, and where light is not required, in place of the glass
panes forming a window, a sheet of zinc can be substituted, in which one or
more fan ventilators are fixed.
The ventilator is extremely useful in stables, kitchins, drying rooms, and
similar places, as all damp exhalations are carried off by the fan ventilator
drawing up the steam and so bringing it in contact with the metal sides, where
it becomes condensed and then escapes as water. When these ventilators are
adapted to furnaces large portions of steam are carried off, and but a slight
diminution made in the heat.
Having thus described my Invention, what I claim and desire to secure by
Letters Patent the improved ventilating apparatus herein-before described
and represented in the accompanying Drawing; at the same time I do not
confine myself to the precise details as to the form, size, and materials used
in the construction, as these may vary without departing from the principle of
the Invention.
In witness whereof, I, the said Michael Francois Antoine Thibault de
Menonville, have hereunto set my hand and seal, this Seventeenth
day of December, in the year of our Lord One thousand eight hundred
and sixty-one
M. F. A. THIBAULT DE MENONVILLE. (L.S.)