IMPROVEMENTS IN " APPARATUS FOR MAINTAINING A CONSTANT DRAUGHT IN CHIMNEYS AND PREVENTING THEM FROM SMOKING
Year: 1882

page_text: LETTERS PATENT to Edmund Edwards, of the firm of Edwards and Co:,
Patent Agents and Engineers, of 40, Southampton Buildings, Chancery Lane,
in the County of Middlesex for an Invention of "IMPROVEMENTS IN
"
APPARATUS FOR MAINTAINING A CONSTANT DRAUGHT IN CHIMNEYS AND
PREVENTING THEM FROM SMOKING A communication to him from abroad
by Adolphe Marques, of Bordeaux in the Republic of France.
PROVISIONAL SPECIFICATION left by the said Edmund Edwards at the
Office of the Commissioners of Patents on the 22nd July 1882.
EDMUND EDWARDS, of the firm of Edwards and Co-, Patent Agents and
Engineers, of 40, Southampton Buildings, Chancery Lane, in the County of
Middlesex " IMPROVEMENTS IN APPARATUS FOR MAINTAINING A CONSTANT
DRAUGHT IN CHIMNEYS AND PREVENTING THEM FROM SMOKING" [A commu-
nication to him from abroad by Adolphe Marques, of Bordeaux in the Republic of
France.]
This invention has for its object improvements in apparatus to be applied to
chimneys of any kind and in any position, for the purpose of maintaining in them
a constant and regular upward draught, and preventing them from smoking by the
accidental cessation or reversal of such draught.
The apparatus consists of a central pipe of metal or other suitable material, of
dimensions which may be varied according to the size of the chimney to which it
is to be applied, the lower part of the pipe being conical and its lower or larger
end being supported by a pipe fitting into the top of the chimney or by a plate
fixed upon the latter. Round the outside of the conical pipe described are fixed a
number of smaller conical pipes the upper ends of which enter the former at
different heights by openings varying according to the height at which they so
enter, so that in this way the air passing up them enters the central pipe with
considerable force, and thus prevents the smoke from being accidentally forced
down the chimney.

page_text: The whole apparatus described is further surrounded by an external case
enclosing both the upper pipe and the lower conical pipes, but of larger diameter,
fixed upon the top of the chimney, and at the lower end of this external case are
made openings through which air enters the smaller conical tubes already
described. In the lower or conical part of the case are also made small
ventilators which can either open or close, and serve in case of need to prevent
the smoke from passing down between the inner pipe and the external casing
described.
Apparatus constructed according to this invention may be applied to chimneys
of any shape or position, and it may be made of any size and of any suitable
material

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Edmund Edwards in the Great Seal Patent Office on the
22nd January 1883.
EDMUND EDWARDS, of the firm of Edwards and Co-, Patent Agents and
Engineers, of 40 Southampton Buildings, Chancery Lane, in the County of
Middlesex "IMPROVEMENTS IN APPARATUS FOR MAINTAINING. A CONSTANT
DRAUGHT IN CHIMNEYS AND PREVENTING THEM FROM SMOKING A commu-
nication to me from abroad by Adolphe Marqués, of Bordeaux, in the Republic of
France
"
This invention has for its object improvements in apparatus to be applied to
chimneys of any kind and in any position, for the purpose of maintaining in them
a constant and regular upward draught, and preventing them from smoking by the
accidental cessation or reversal of such draught.
The accompanying drawing is in illustration of the invention, figure 1 being an
elevation and figure 2 a vertical section of a chimney.
The apparatus consists of a central pipe A, B of metal or other suitable
material, of dimensions which may be varied according to the size of the chimney
to which it is to be applied, the lower part B, C, of the pipe being conical and its
lower or larger end being supported by a pipe C, D, fitting into the top of the
chimney, or by a plate (represented at figure 3) fixed upon the latter. Round the
outside of the conical pipe B, C, described are fixed a number of smaller conical
pipes E, F, the upper ends of which enter the former at different heights by
openings F varying in size according to the height at which they so enter, so that
in this way the air passing up them enters the central pipe A, B, with
considerable force, and thus prevents the smoke from being accidentally forced
down the chimney.
The whole apparatus described is further surrounded by an external case G, H, K,
enclosing both the upper pipe and the lower conical pipes, but of larger diameter,
fixed upon the top of the chimney, and at the lower end K of this external case
are made openings square, circular, or oval in shape, through which air enters the
smaller conical tubes E, F, already described and assists the draught. In the
lower or conical part H, K, of the outer case are also made small ventilators or
slides I which can either open or close, and serve in case of need to prevent
the smoke from passing down between the inner pipe A, B, C, and the external
casing G, H, K.
Apparatus constructed according to this invention may be applied to chimneys
used for any purpose, and of any shape, or position, and it may be made of any
size and of any suitable material.
I do not confine myself to the precise form, proportions, and arrangement of the
several parts, which may be varied to suit varying circumstances, but having
described the invention and the manner in which it is to be performed, I claim, the
combination of the internal cylindro-conical pipe A, B, C, the smaller conical
pipes and openings E, F, and the external cylindro-conical case G, H, K,
substantially as and for the purpose described and shewn in the drawing.
Also, in combination with the external case G, H, K, the adjustable ventilators
or slides I.
In witness whereof, I, the said Edmund Edwards have hereunto set my hand