VENTILATING ROOMS AND PREVENTING SMOKE
Year: 1884

page_text: I WILLIAM PAULSON of Mountsorrel, near Loughborough in the County of
Leicester Surgeon do hereby declare the nature of this Invention for VENTILATING
ROOMS AND PREVENTING SMOKE to be as follows:-
'
I make the jambs of the mantel piece hollow, tubes, in fact, one end passing
through the floor, the other through the mantel shelf.
14.
The lower end opens freely under the floor, but the other is protected by a
grating to prevent articles falling into it, and if desired a woven fabric, or other
suitable air filter may be placed under the grating.
Fresh air is admitted under the floor through the outer walls, by suitable
openings in the outer walls, and tubes may be laid to conduct it to the lower
openings of the hollow jambs, which being heated by their proximity to the fire,
warm the air, passing through them, and propel it towards the ceiling to be
diffused throughout the room.
I fix a third tube, several feet in length at the back of the fireplace opening
below under the firegrate (which should have a solid floor) opening above direct
into the chimney.
This tube becoming hot, causes a blast of air to pass up the chimney and prevents
smoking, but since its intake is below the fire, combustion is not unduly hastened.
By these simple and inexpensive means, -a free supply of warmed fresh air is
secured without draught, the upper part of the room is swept clear of vitiated air,
and a blast independent of that passing through the fire is driven up the chimney.
I claim the tubular jambs opening direct under the floor, and into the room in
connection with the chimney tube opening under the fire and of a length to secure
a free draught, as a novel combination and arrangement.

page_text: COMPLETE
DIECIFICATION.
"
I WILLIAM PAULSON of Mountsorrel near Loughborough in the County of
Leicester, Physician and Surgeon, do hereby declare the nature of my invention
for VENTILATING ROOMS AND PREVENTING SMOKE " and in what manner the'
same is to be performed, to be particularly described and ascertained in and by
the following statement :-
In carrying out my Improvements I prefer to make the jambs of the mantlepiece
hollow, tubes in fact, one end passing through the floor and the other through the
mantleshelf.
"
The lower end opens freely under the floor but the other, or outer, is protected
by a grating to prevent articles falling into it and if desired a woven fabric or
other suitable air filter may be placed under or over the said grating.
Fresh air is admitted under the floor, through the outer walls by suitable
openings and tubės may be laid to conduct to the lower openings in the hollow
jambs which being heated by their proximity to the fire warm the air passing
through them and propel it twords the ceiling to be diffused throughout the room.
I fix a third tube several feet in length at the back of the fireplace opening
below under the firegrate (which should have a solid floor) this tube is open above
direct into the chimney, and when made hot causes a blast of air to pass up the
chimney and prevents smoking or downḍraughts but since its intake is below the
fire, combustion is not unduly hastened.
By these simple and inexpensive means, a free supply of warmed fresh air is
secured without draughts, the upper part of the room is swept clear of vitiated
air and a blast, independent of that passing through the fire, is driven up the
chimney.
In order that the said Invention may be fully understood, I shall now proceed
more particularly to describe the same and for that purpose shall refer to the
annexed Drawings the same letters of reference indicating corresponding parts in
each figure.
Figure 1, shews a front view of a chimneypiece the jambs of which A, A, are
made hollow or fitted with the tubes B, B, as indicated by the dotted lines leading
from the floor C, C, to the top of the mantleshelf. D, shews the grating placed
at the opening to prevent small articles falling therein. E shews the woven fabric
to act as a filter to the air passing through it. F, F, is a section of a tube placed
behind the fire, open at both ends so as to admit air at its lower end and discharge
the same into the chimney above as shewn in sectional Figure 2; such air having
been brought from the outside through suitable openings and along the tubes G, G,
placed under the floor for that purpose and discharging it into the hollow jambs
above as indicated by the arrows.

page_text: Having now particularly discribed and ascertained the nature of my said
invention and in what manner the same is to be performed. I declare that what
I claim is
First. Hollow or tubular jambs opening directly under the floor and into the
room in connection with a chimney tube opening under the fire and of a height to
secure a free draught, as a novel combination and arrangement for the purposes
herein specified.
Second. The placing behind the fire, or in any suitable position, a tube of
sufficient height to cause a blast of air to pass through it up the chimney and thus
prevent downdraught, or smoking.