Year: 1898

page_text: We, ROBERT WILSON and SIDNEY GOODMAN, both of 24, Harrison Street, Gray's
Inn Road, London, W.C., Engineers, do hereby declare the nature of this invention
to be as follows:-
The object of this invention is to utilize the heat from an ordinary stove or
fire grate in warming fresh air brought from the outside by means of a pipe and
carried under and around the firegrate and distributed into the room to warm
and ventilate it.
For this purpose we construct a sunk recess at the bottom of the chimney
usually occupied by the hearthstone this recess should be from 3 inches to
4 inches deep. The bottom of this recess is floated with cement forming a level
floor or sunk hearth. We then have a cast iron box about the size of the usual
hearthstone and 3 or 4 inches deep with a 1 inch top and sides only like an
inverted tray. Around this box or inverted tray is a raised margin about an inch
deep to receive a bed of cement and ordinary hearth tiles to form the hearth of
the fireplace.
At the front edge of this box is an opening to receive the pipe which conducts
the fresh air from an outer wall into the chamber formed by this box underneath
the fire so as to heat the air. On the top surface of this box and clear of the
tiles and behind the front of the stove 2 outlets are formed of an area equal to the
fresh air supply pipe, and on the top of these openings 2 upright pipes made of
glazed earthenware are carried up to the top of the stove and connected with a
third and horizontal pipe with an opening in the side or front communicating with
the front plate of the register stove which plate is perforated to allow the heated
fresh air to pass out into the room.
These upright pipes vary in size according to the fresh air inlet pipe which
varies in size according to the cubical contents of the room to be warmed &
ventilated and are placed so as to receive the heat from the sides and back of the
firegrate as well as from the chamber underneath the firegrate and may he made
to carry the heated air to the sides of the chimney breast or above the mantel or where
As soon as the
desired. These openings have covers to close them when necessary.
fire is lighted the air in the chamber underneath becomes heated and rarified and
immediately rises up the pipes into the room and the fresh air from outside
follows to fill the place of the heated air and thus a perfect circulation of pure
fresh heated air into the room is maintained.
Dated this 17th day of March 1898.
ROBERT WILSON.
SIDNEY GOODMAN.

page_text: We, ROBERT WILSON and SIDNEY GOODMAN, both of 24, Harrison Street, Gray's
Inn Road, London, W.C., Engineers, do hereby declare the nature of this inven
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement;―
This invention has for its object the warming and ventilation of rooms by means
of the ordinary register stoves in combination with pipes and a hot air chamber
underneath the stove which heats the fresh air brought from the outside thereby
economising fuel and securing perfect ventilation by warmed pure air.
The following is a complete description of our said invention reference being
made to the accompanying drawing representing hearth box or air-chamber and
pipes with inlet and outlet through the register stove. A is the cast iron box
resting on a level bed of concrete J. A¹ is a section of the same and A² is a plan
of the underside shewing midfeathers.
The supply of fresh air is brought in by means of a pipe from the outside wall
of the house and passes into this box or chamber through the opening B.
This chamber has midfeathers shewn in plan at E, and openings in the top at G,
where the fresh air passes up the pipes C and out at the opening D into the room.
The pipes C are made of iron or of glazed earthenware and are fixed close to the
sides of the firegrate which warms the air in the pipes the horizontal pipe is
warmed by the flame from the fire.
The opening D has a socket cast on the back of the register stove which fits
on to the socket of the horizontal pipe.
Glazed tiles I are laid in cement on the top of the hearth box A. H is a shutter
with a balance weight attached by which the supply of air may be shut off.
K is a section of the register stove.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is:
1. A chamber forming the hearth box with the upright and horizontal pipes
having an outlet through the face of the stove all in combination and arranged
substantially as and for the purpose described and shewn by the annexed
drawing.
Doted th 1911 1
D
1000