Improved Means for Heating, Drying and Ventilating.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improved Means for Heating, Drying and Ventilating.
We, JOHN LANGFIELD, of 10, College Land, Manchester, in the County of
Lancaster, Engineer, and GEORGE HENRY KENWORTHY, of Hurst Hall, Ashton-
under-Lyne, in the aforesaid County, Spinner and Manufacturer, do hereby declare
the nature of this invention to be as follows;-
This invention relates to that class of apparatus (for supplying a room or space
with heated air) for which Letters Patent No. 23,066 of 1892, were granted to
John Langfield and R. B. Sharples.
The object of this invention is to reduce still further the appreciable current
of air caused by the change of air in the space or room, especially when such
change of air is required to be very rapid, say for more perfect ventilation.
According to this invention we form the area of the inlet or grid openings
admitting the fresh hot air into the room or space to be heated, at least twice as
large as the combined area of the heating tubes or other tube supplying the hot
air, the said heating tubes or tube being connected with the inlet to the room or
space by a chamber or duct of such an area that the air will thus expand into the
said chamber or space beneath the floor, before entering the room or space to be
heated or ventilated. We also make the area of the grid openings of the outlet,
at least twice as large as the inlet, the said outlet opening into a chamber or space,
which we prefer to form below the floor level, but which may be inside the room
or space to be heated or outside and close to the floor thereof. This last named
chamber or space must be of an area of at least twice the size of the openings
into the same thus forming a reservoir of air; it must also be three times the size
of the uptake or chimney with which it commuicates; the outlet from the reservoir
into the said uptake should preferably be at the bottom of the reservoir, and this
reservoir should have a capacity of twice as many cubic feet as there are square
feet area of thoroughfare through the outlet grating from the chamber to be
ventilated, the area of the outlet from the said room and the capacity of the space
forming the reservoir varying according to the height of the said uptake.
By the combination of such an inlet, outlet and reservoir, the air in the room or
space can be changed very rapidly without any draught or current of air appreciable
near the outlet.

page_text: Improved Means for Heating, Drying and Ventilating.
We, JOHN LANGFIELD, formerly of 10, College Land, now of 23, Victoria
Buildings, St. Mary's Gate, Manchester, in the County of Lancaster, Engineer,
and GEORGE HENRY KENWORTHY, of Hurst Hall, Ashton-under-Lyne, in the
aforesaid County, Spinner and Manufacturer, do hereby declare the nature of
this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
This invention relates to that class of apparatus (for supplying a room or space
with heated air) for which Letters Patent No. 23,066 of 1892, were granted to
John Langfield and R. B. Sharples.
The object of this invention is to reduce still further the appreciable current
of air caused by the change of air in the space or room, especially when such
change of air is required to be very rapid, say for more perfect ventilation,
and the invention will be readily understood from the following description on
reference to the accompanying drawing which illustrates in section a room fitted
according to our invention.
We form the area of the inlet a or grid openings admitting the fresh hot air into
the room or space A to be heated, at least twice as large as the combined area of
the heating tubes 6 or other tube supplying the hot air, the said heating tubes b
or tube being connected with the inlet a to the room or space A by a chamber
or duct c of such an area that the air will thus expand into the said chamber or
space beneath the floor d, before entering the room or space to be heated or
ventilated. We also make the area of the grid openings of the outlet e, at least
twice as large as the inlet a, the said outlet e opening into a chamber or space e¹
which we prefer to form below the floor level as shewn on the drawing, but which
may be inside the room or space to be heated or outside and close to the floor
thereof. The area or superficial measurement of this last named chamber or
space e must be at least twice that of all the openings (e) into the said chamber
which thus forms a reservoir of air, it must also be three times that of the uptake
or chimney f with which it communicates; the outlet e from the reservoir e¹
into the said uptake should preferably be at the bottom of the reservoir as shewn,
and this reservoir e¹ should have a capacity of twice as many cubic feet as there
are square feet area of thoroughfare through the outlet grating e from the
chamber A to be ventilated, the area of the outlet e from the said room A and
the capacity of the space e¹ forming the reservoir varying according to the height
of the said uptake f.
By the combination of such an inlet ca, outlet e and reservoir e¹, the air in
the room or space can be changed very rapidly without any draught or current
of air appreciable near the outlet.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is:-
The combination with the room to be heated or dried and ventilated of suitable
air heating apparatus expansion chamber, inlet, outlet reservoir and uptake or
chimney constructed and arranged as hereinbefore described.
Dated this 95th dow of Wahmia 1900
GEO. DAVIES & SON,
Agents for the Applicants, 4, St. Ann's Square, Manchester,