Year: 1887

page_text: Date of Application, 6th Jan., 1887
Complete Left, 6th Oct., 1887
Complete Accepted, 8th Nov., 1887
We THOMAS SILK WILSON and HENRY THOMAS JOHNSON both of Albert Square
Manchester in the County of Lancaster Sanitary Engineers do hereby declare the
nature of this invention to be as follows:-
--
This invention relates to improvements upon the ventilating apparatus for which
Letters Patent (No. 1112 dated January 10th 1884) were granted to us, the object of
the present improvements being to simplify the construction and to render the
apparatus more suitable for the ventilation of ordinary living or sleeping rooms and
other similar apartments, and a special feature of this invention is that the apparatus
is intended to be let into the chimney breast below the ceiling and to ventilate the
apartment by means of the ordinary flue or chimney.
We use one or more Argand or other suitable gas burners enclosed in a chimney of
copper fire clay or other suitable material, the form of the said chimney being
cylindrical or elliptical according to the form of burner used, and one or more such
chimneys being employed according to the number of burners used.
The chimney or chimneys is or are enclosed in a metal shell of a circular or elleptical
form in section, but larger in diameter so as to leave an annular air space all round
between the shell and chimney. The upper part of this shell above the chimney is
bent or curved backwards so that its mouth is directed towards the flue. The burner,
chimney and shell are supported on an open stand so as to admit air to support the
combustion of the gas.
This apparatus is enclosed in a metal casing which is fitted into an opening made in
the brickwork or stonework of the chimney breast. The back of this casing is flush
with the interior or side of the flue and is provided with an opening at the upper part
opposite to the mouth of the shell above described.
The sides, top, and bottom are closed and fit closely into the opening in the brick-
work or stonework. The front is made with a curved or bevilled top and sides and
projects into the apartment. Where it is undesirable to have the front of the case
projecting into the room the shell would be dispensed with, owing to the contraction
of space and the burner would have the chimney only without the additional shell.

page_text: The bottom part of the front does not join the bottom of the casing, an opening
being left to admit air into the casing, and also through the perforated or open stand
to the gas burner or burners, and to allow of the easy ignition and extinction of
the gas.
The front and the bevilled or curved sides of the casing are fitted with ornamental
perforated panels to admit air into the casing; and in some cases we substitute louvre
plates in lieu of these perforated panels.
When the gas is lighted the chimney and its shell become heated to a considerable
degree and a strong current of heated air is thereby set up in the annular space
between the two and is directed by the curved or bent upper portion of the shell into
the flue, thereby inducing a steady current of air from the apartment through the
lower opening, and the perforations or louvres in the front of the casing, to pass
through the casing and through the opening in the back of the same into the flue.
The upward draught existing in the latter will also greatly assist the ventilation
and if the top of the same be fitted with an exhaust cowl when there is a sufficient
wind the draught will be powerful enough to induce a steady ventilating current
through the apparatus without igniting the gas.
Dated this 5th day of January 1887
GEORGE DAVIES,
4, St. Ann's Square, Manchester,
Agent for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improved Apparatus for Ventilating Apartments.
We THOMAS SILK WILSON and HENRY THOMAS JOHNSON both of Albert Square
Manchester in the County of Lancaster Sanitary Engineers do hereby declare the
nature of this invention and in what manner the same is to be perforined, to be
particularly described and ascertained in and by the following statement:—
This invention relates to improvements upon the ventilating apparatus for which
Letters Patent (No. 1112 dated January 10th 1884) were granted to us, the object
of the present improvements being to modify the construction so as to render the
apparatus more economical and convenient for the ventilation of ordinary living or
sleeping rooms and other similar apartments by dispensing with otherwise specially
constructed metal shafts, and a special feature of this invention is that the apparatus
is intended to be let into the chimney breast below the ceiling and so utilize the
ordinary flue or chimney to ventilate the apartment.
The nature of our said invention and the manner in which the same is to be per-
formed or carried into practical effect will be readily understood on reference to the
annexed sheet of drawings and the following explanation thereof.
On the annexed sheet of drawings Fig. 1. is a vertical section of our improved
apparatus, and Fig. 2 is a horizontal section of the same as constructed to act with a
single Argand gas burner, and Fig. 3. is a horizontal section showing the same modified
to act with two burners.
•
We use one or more Argand or other suitable gas burners a, a enclosed in a
chimney b, b of copper, fire clay, or other suitable material, the form of the said
chimneys being cylindrical as shown at Figs. 2 and 3.
This chimney b, bis enclosed in metal shells c, c of a similar form in section but
larger in diameter so as to leave an annular air space all round between the shell and
chimney (see Fig. 2), or elliptical in form as shown at Fig. 3. if two burners are
used. The upper part of these shells c, c above the chimneys are bent or curved
backwards so that their mouths c* are directed towards the flue. The burner a, a
chimney b, b and shell c, c are supported on an open stand or upon a rest, bar or
plate d, d so as to admit air to support the combustion of the gas.
This apparatus is enclosed in an outer metal casing e, e which is fitted into an
opening made in the brickwork or stonework, (see Fig. 1.) of the chimney breast.
The back ex, ex of this casing is flush with the interior or side of the flue and is pro-
vided with an opening at the upper part opposite to the mouth of the shell c*, c* above
described; 9, y is a sliding plate to close this opening when desired. The sides, top
and bottom are closed, and fit closely into the opening in the brickwork or stone-
work ff. The front e¹, e¹ is made with curved or bevilled top and sides and projects
into the apartment.
Where it is undesirable to have the front of the case projecting into the room, the
shell would be dispensed with owing to the contraction of space and the burner would
have the chimney only without the additional shell.

page_text: At the bottom of the casing is an opening h, left to admit air into the casing and
to the gas burner or burners and to allow of the easy ignition and extinction of
the gas.
The front and the bevilled or curved sides of the casing are fitted with ornamental
perforated panels i, i to admit air into the casing and in some cases we substitute
louvre plates k, k (Fig. 1.) in lieu of these perforated panels i, i.
When the gas is lighted the chimney b, and its shell c, c become heated to a con-
siderable degree and a strong current of heated air is thereby set up in the annular
space between the two and is directed by the curved or bent upper portion ex, ex of
the shell into the flue, thereby inducing a steady current of air from the apartment
through the lower opening h, h and the perforations i, i, or, louvres k, k in the front
of the casing and through the opening in the back of the same into the flue.
The upward dranght existing in the latter will also greatly assist the ventilation
and if the top of the same be fitted with an exhaust cowl when there is a sufficient
wind the draught will be powerful enough to induce a steady ventilating current through
the apparatus without igniting the gas.
The front e, e with its curved or bevilled top and sides may be made with a hinge l, l
at one side (see Figs. 2 and 3.) so that it can be readily opened for lighting the gas
or otherwise.
We would also remark that we do not wish to confine ourselves to the use of Argand
or other ordinary gas burners, but would use in lieu thereof atmospheric or so called
Bunsen burners; the shells and frame will remain the same, the ordinary gas burners
would be substituted with atmospheric burners.
Having now particularly described and ascertained the nature of our said invention
and in what manner the saine is to be performed we declare that what we claim is :-
r
First, the improved apparatus or draught inducer fixed in the chimney breast fo
ventilating apartments substantially as hereinbefore described and illustrated by the
drawings annexed.
Secondly, we claim for the purposes of ventilating apartments the combination with
one or more ordinary gas or atmospheric burners of a chimney or chimneys open at
both ends and enclosed in a cylindrical or other suitably formed shell open at the
bottom and with its upper part bent backwards and opening into the flue, the whole
being enclosed in a casing (fitted in the chimney breast) with a front and sides made
with open louvres or perforations to admit the air from the apartment and an opening
at the back near the top to allow of the exit thereof into the flue.
Dated this 5th day of October 1887.
GEORGE DAVIES,
4, St. Ann's Square, Manchester;
Agent for the Applicants.