IMPROVEMENTS IN MEANS FOR VENTILATING BUILDINGS AND OTHER PLACES
Year: 1867

page_text: LETTERS PATENT to James White, of Great Portland Street, in the -
County of Middlesex, for the Invention of "IMPROVEMENTS IN MEANS FOR
VENTILATING BUILDINGS AND OTHER PLACES."
.Sealed the 21st April 1868, and dated the 22nd October 1867.
PROVISIONAL SPECIFICATION left by the said James White at the
Office of the Commissioners of Patents, with his Petition, on the
22nd October 1867.
I, JAMES WHITE, of Great Portland Street, in the County of Middlesex,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
MEANS FOR VENTILATING BUILDINGS AND OTHER PLACES," to be as follows:-
The Invention has for its object improvements in means for ventilating
buildings and other places, and relates to means for withdrawing vitiated air
from a room or enclosed space. For this purpose I form apertures in the
ceiling of the room or enclosed space, and I employ suitable channels or
passages communicating therewith and with a chamber connected with the
grate or fire-place employed to warm such room or enclosed space, from such
chamber a pipe or channel is carried a short distance up the flue.
Thus by
the heat generated by the grate or fire-place in the chamber connected there-
with the air contained in such chamber is rarefied, and in passing off by the
flue such rarefied air carries away with it the vitiated air from the room or
enclosed space. The vitiated air passes through the apertures in the ceiling,
and by the channels or passages into the chamber connected with the grate or

page_text: 'fire-place, and out thereof through the pipe into the flue.
Instead of the
channels or passages from the ceiling passing to a chamber connected with the
stove or grate used to warm the room or enclosed space, such channels or
passages may lead to a chamber which is heated by oil, gas, or in any other
suitable manner, and if desired the warm air generated in the heated chamber
may be caused to pass around and thereby warm the room or enclosed space
before its discharge into the flue or open air.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James White in the Great Seal Patent Office on the
22nd April 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
WHITE, of Great Portland Street, in the County of Middlesex, send greeting.
WHEREAS 'Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-second day of October, in the year of our
Lord One thousand eight hundred and sixty-seven, in the thirty-first year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said James White, Her special licence that I, the said James White, my
executors, administrators, and assigns, or such others as I, the said James
White, 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
MEANS FOR VENTILATING BUILDINGS AND OTHER PLACES," upon the condition
(amongst others) that I, the said James White, my executors or adminis-
trators, 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 James White, 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:-
The Invention has for its object improvements in means for ventilating
buildings and other places, and relates to means for withdrawing vitiated air

page_text: but in the apartments marked B and C the foul or vitiated air is drawn there-
from into a chamber c connected with and heated by a fire in the stove or
grate of the apartment above, whilst in the apartment marked D a combination
of the two plans is shown, part of the vitiated air being drawn away through
the aperture a in the ceiling and into the chamber c heated by the stove or
grate in the apartment C above, and part of the vitiated air being drawn away
through the aperture a¹ in the wall close to the ceiling and into the chamber c
heated by the stove or grate in such apartment D. The apartment marked D
may, however, be ventilated by either of the plans shewn applied thereto instead
of having both arrangements. If desired more than one aperture a may
be formed in the ceiling to communicate with the tubes or passages b, and
such tubes or passages 6 may be led into chambers c warmed by oil, gas,
or other suitable means and communicating with a ventilating shaft common
to several apartments instead of being led into the flues f, or separate ventilating
shaft may be employed if desired. If desired suitable valves may be employed
to regulate the amount of air passing away from the rooms or enclosed
spaces, or to shut off all communication between such rooms or enclosed
spaces and the ventilating means when such is not required.
Having thus described the nature of my Invention, and the best means
with which I am acquainted for carrying the same into effect, I would have
it understood that I do not confine myself to the precise details herein shewn
and described; but what I do claim is, the peculiar adaptations and com-
binations of means for ventilating buildings and other places, substantially as
herein shewn and described.
In witness whereof, I, the said James White, have hereunto set my hand
and seal, this Twenty-first day of April, in the year of our Lord Oe
thousand eight hundred and sixty-eight.
Witness,
B. J. B. MILLS,
Patent Agent,
35, Southampton Buildings,
Chancery Lane.
JAMES WHITE. (L.S.)