IMPROVEMENTS IN APPARATUS FOR HEATING, VENTILATING, AND DISINFECTING
Year: 1875

page_text: LETTERS PATENT to James Wavish, of East India Road, in the
County of Middlesex, for the Invention of "IMPROVEMENTS IN
T
Sealed the 16th May 1876, and dated the 26th November 1875.
PROVISIONAL SPECIFICATION left by the said James Wavish at the
Office of the Commissioners of Patents, with his Petition, on the
26th November 1875.
I, JAMES WAVISH, of East India Road, in the County of Middlesex,
do hereby declare the nature of my said Invention for "IMPROVEMENTS
IN APPARATUS FOR HEATING, VENTILATING, AND DISINFECTING," to be as
follows:
My Invention has reference to the description of apparatus for
facilitating the proper combustion of fuel, in respect of which Letters
Patent were granted to me bearing date the 4th January 1875,
No. 39, and it consists essentially in forming an air chamber beneath
the plate carrying the perforated air tubes described in the Specification

page_text: of my said former Letters Patent, into which chamber air is introduced
from the external atmosphere by means of suitable pipes or passages.
The bottom of the chamber may be made of a funnel or tapering
shape to facilitate the attachment of the air supply pipe, or it may be
otherwise formed, according to circumstances, and a valve may be
provided for regulating the admission of the air. By means of this
Invention the oxygen requisite to support combustion is derived from
the external atmosphere direct in lieu of from the vitiated air of the
apartment, and provision is thus also made for ventilating the apart-
ment especially in warm weather when a fire is not required, the air
admitted into the chamber passing through the perforations of the air
tubes in the grate, and being supplied in a finely divided condition into
the apartment.
It is also proposed in the case of sick rooms and the wards of hospitals
to place over the air tubes (when a fire is not required in the grate),
bags or coverings containing or saturated with any suitable disinfectant,
whereby the air passing through the perforations of the air tubes will
become impregnated with such disinfectant, which will be thus diffused
throughout the ward or apartment.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said James Wavish in the Great Seal Patent Office on
the 23rd May 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I JAMES
WAVISH, of East India Road, in the County of Middlesex, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-sixth day of November, in the year of
our Lord One thousand eight hundred and seventy-five, in the thirty-
ninth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said James Wavish, Her special license
that I, the said James Wavish, my executors, administrators, and
assigns, or such others as I, the said James Wavish, my executors,
administrators, or assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term

page_text: 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 HEATING, VENTILAting, and DisinfeCTING," upon the condition
(amongst others) that I, the said James Wavish, by an instrument
in writing under my hand and seal, 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
Scal 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 Wavish, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement, reference being had to the accompanying Drawings
and to the letters and figures marked thereon, that is to say:-
1
My said Invention has reference to the description of apparatus for
facilitating the proper combustion of fuel in respect of which Letters
Patent were granted to me bring date the 4th January 1875, No. 39,
and it consists essentially in forming an air chamber beneath the plate
or base carrying the perforated air tubes described in the Specification
of my said former Letters Patent, into which chamber air is introduced
from the external atmosphere by means of suitable pipes or passages.
And in order that my said Invention may be fully understood I shall
now proceed more particularly to describe the same, and for that purpose
shall refer to the several Figures on the annexed Sheet of Drawings, the
same letters of reference indicating corresponding parts in both the
Figures.
Figure 1 of my Drawings represents a vertical section taken through.
the chimney breast and wall of an apartment showing a grate having
my Invention applied thereto, and Figure 2 is a front perspective view·
of the same.
a is the plate or base fitted to or forming part of a grate and carrying
the perforated air tube bas described in my said former Specification,
beneath which plate I form a chamber c into which air is introduced:

page_text: air into the chamber c being regulated either by a sliding valve e, as
shewn, or by a throttle valve or by a valve of any other suitable
description. By means of this arrangement of air chamber in commu-
nication with the exterior, the oxygen requisite to support com-
bustion is derived from the atmosphere direct in lieu of from the
vitiated air of the apartment, and provision is thus also made for
ventilating the apartment especially in warm weather when a fire is not
required, the air admitted into the chamber passing through the per-
forations of the air tube in the grate, and being supplied in a finely
divided condition into the apartment.
The chamber c may also be fitted at its front end with a valve ƒ of the
rotary class, or of any other suitable description by opening which when
the grate is occupied by a fire a portion of the air admitted into the
chamber c will be discharged in a heated condition into the apartment,
whilst the remainder passes through the perforations in the tube b, and
is utilized in supporting combustion. The portion of air so discharged
into the apartment, and which forms the surplus of what is required to
support combustion is thus admitted in an unimpoverished condition,
without having been deprived of its oxygen, but with its temperature
elevated by its passage through the air chamber c, whereby such air is
made available in heating the apartment, whilst at the same time its
salubrity is ensured.
In the case of sick rooms and the wards of hospitals I may place over
the air tube b (when a fire is not required in the grate) bags or
coverings containing or saturated with any suitable disinfectant, whereby
the air passing through the perforations of the air tube will become
impregnated with such disinfectant, which will be thus diffused
throughout the ward or apartment.
It is obvious that when the chamber with the perforated back and
sides described in my said former Specification is employed in com-
bination with the air tubes, that chamber may also be placed in direct
communication with the external atmosphere, either by means of pipes
or passages independent of those which supply the air chamber c, or by
being connected with and forming one chamber with the chamber c.
Having now described and particularly ascertained the nature of my
said Invention, and the manner in which the same is or may be used
or carried into effect, I would observe in conclusion that what I consider

page_text: to be novel and original and therefore claim as the Invention secured to
me by the herein-before in part recited Letters Patent is,―
The combination with a plate or base carrying perforated air tubes
as herein set forth of a chamber into which air is introduced from the
external atmosphere, substantially as and for the purposes herein-before
described.
In witness whereof, I, the said James Wavish, have to this my
Specification set my hand and seal, this Twenty-second day of
May, One thousand eight hundred and seventy-six.
JAMES WAVISH. (L.S.)