A COMBINED SYSTEM OF WARMING AND VENTILATING ROOMS AND PUBLIC BUILDINGS
Year: 1885

page_text: and Public Buildings.
HENRY THOMAS JOHNSON of Willow Bank Urmston near Manchester in the
County of Lancaster Sanitary Surveyor do hereby declare the nature of my
invention for A COMBINED SYSTEM OF WARMING AND VENTILATING ROOMS AND
PUBLIC BUILDINGS to be as follows:-
The object of my invention is to warm a room by radiation from a gas stove
and deliver through the said stove also fresh warmed air into the room and at such
a height as to flow in clear of the heads of the occupants, the warm air not to
mingle with the gas burnt in the stove; the products of combustion to be separately
carried off and utilized as a power to extract the vitiated air, For this purpose
I construct a stove of any metal fireclay or tiles, in an enclosed compartment in
which I burn for heating purposes combustible gas (such as carburetted hydrogen)
mixed with a proper proportion of air, Behind the said enclosed compartiments
are chambers or passages which receive in the upper portion thereof fresh air, the
latter is carried downwards to the bottom of the stove and then returns in an
upward course to be delivered into the room at a height of about six feet from the
floor, the warm air ducts or channels are carried higher than the body of the
stove, The waste heat or products of combustion are carried in a separate tube tọ
the upper part of the room or ceiling and there carried into a shaft or tube to act
as an inducer to extract the vitiated air from the room, this latter tube or extracting
shaft to be of larger diameter or dimensions than the combustion tube, and
terminating with a suitable outlet Or the products of combustion may be
discharged without being utilised as an extracting power.
Further the chambers or passages for discharging warm air into the room
may when the stove is not required for heating purposes be used for delivering
fresh cold air into the room.
Dated th: XT:

page_text: A Combined System of Warming and Ventilating Rooms
.:
and Public Buildings.
İ, HENRY THOMAS JOHNSON Willow Bank Urmiston near Manchester in the
County of Lancaster Sanitary Surveyor and Engineer do hereby declare the nature
of my invention for A COMBINED SYSTEM OF WARMING AND VENTILATING ROOMS
AND PUBLIC BUILDINGS and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
The object of my Invention is to warm a room or any building by radiation from
a gas stove also to deliver from the said stove fresh warmed air into the room and
at such a height as to flow in clear of the heads of the occupants, the warm air not
to mingle with the gas burnt in the stove, the products of combustion to be
separately carried off and utilised as a power to extract the vitiated air, the warm
air ducts to be used as cold air ducts or inlets when the stove is not in use for
heating purposes.
In the accompanying drawing Fig. 1 is a horizontal section of the stove.
Fig. 2 is a vertical section on the line a. b. of Fig. 1 Fig. 3 is an elevation and
Fig. 4 is a vertical section on the line c. d. in fig. 1 and shews an example of fitting
the stove to an outside wall with the waste product tube extended to the ceiling
and carried into the exhaust or ventilating shaft fixed in the roof.
The stove need not necessarily be fitted against the wall but may be placed in
any desirable position within a room or building and the outer air carried thereto
in tubes, The exhaust or ventilating shaft may be carried to any suitable outlet
either through the roof through the wall through upper rooms or into flues and
protected from downblows by suitable cowls or heads.
.
For the purpose of my invention I construct a stove or enclosed compartment E of
any metal fireclay porcelain or tiles or combinations of either and of any size or
shape either flat sided or cylindrical, within the stove or enclosed compartment
there are tubes or pipes F. perforated with holes or fitted with burners to form
gas jets, these tubes or pipes connect with another tube G which supplies
combustible gas (such as carburetted hydrogen) or gas mixed with a proper
proportion of air to be consumed for the purpose of heating the stove, In the
lower part of the stove there are holes H made for supplying air to maintain
combustion and the necessary draft to the waste product outlet.
Behind or contiguous to the enclosed compartments there are chambers I which
are either directly connected with openings J in the wall K or indirectly by means
of tubes or air shafts as circumstances may require (there may be one two or more
of the said chambers) In the wall may be fixed air grids L through which air is
admitted to the chambers I (in some positions of the stove it may be necessary to
convey the air to the chambers I in the lower part thereof instead of in the upper
part).
The air in passing through the chambers I is warmed by contact with the
sides of the enclosed or heated compartments of the stove and is delivered into the
room at such a height (about six feet from the floor) as to clear the heads of th

page_text: occupants and consequently higher than the stove or enclosed compartment E
The warm air outlets will be provided with valves M to regulate the flow of
warm air.
The waste heat or products of combustion are carried in any convenient manner
in a separate tube N to the upper part of the room or through the ceiling or upper
roon and there discharged into a ventilating or exhaust shaft O which is open at
its bottom end to the ceiling of a room. The heated current discharged through
the tube N with considerable velocity due to high temperature into the exhaust
shaft O creates a suction or inducing power to draw vitiated air, smoke gas light
products or other objectionable air or matter from the room in which the exhaust
shaft opens the exhaust shaft O will be of larger diameter or dimensions than the
tube N and protected from downblows by any suitable cowl or head.
Or the products of combustion may as required be discharged without being
utilised as an extracting power.
A tray may be inserted within the stove to intercept any water which may
condense within the tube N.
I therefore claim for my invention to warm and ventilate a room or any building
by means of one or more gas stoves, to warm partly by radiation and partly by
the diffusion of fresh warmed air, also to extract the vitiated air from the room,
also again when the stove is not required for heating purposes to deliver thereby
fresh cold air into the room or building.
Dated the 90th day of February 1886