Improvements in or Connected with Apparatus for Heating or Cooling Air, Gas, or other Fluids.
Year: 1887

page_text: Date of Application, 8th Sept., 1887
Complete Left, 8th June, 1888
Complete Accepted, 13th July, 1888
Improvements in or Connected with Apparatus for Heating or
Cooling Air, Gas, or other Fluids.
1 GEORGE SEAGRAVE of Chelsea Gardens, in the county of Middlesex, Engineer, do
hereby declare the nature of my said invention to be as follows:-
This invention relates to certain detail improvements in apparatus previously
patented by myself and by Matthew Stobbs on the 18th day of November in the year
1879 (No. 4685) and also by myself and Samuel Bourne Bevington on the 23rd day
of February in the year 1881 (No. 773).
The specifications of those patents describe constructions of apparatus and arrange-
ment of parts thereof in which air was treated by the application of heat from a
furnace, from steam or otherwise, especially while the air had a motion through the
apparatus by pressure or by exhaust.
Now according to my present invention―the object being the same I make the
casing in such a manner that the pipes or tubes and also the boxes by which the tubes
are carried or held in place, that they can be supported from one end only for enabling
a free expansion and contraction of said tubes and boxes or chambers within their
casing.
The air spaces may be provided with an archimedian screw or its equivalent for
increasing the length of travel of the air and the tubes may be expanded into
position in the boxes or plates forming chambers or they may be gland packed as
desired.
The tubes and the boxes or chambers may be arranged vertically or horizontally in
which latter case both ends of the tubes may have a free motion within flanged rings
of fixed end boxes. The tubes either as single or double tubes-arranged in cylindrical
or other order are supported or held within the casing (which may also have a free
motion end wise) by baffle plates these having openings, alternately arranged, for
directing the air in a zigzag manner while travelling through the apparatus-if air be
forced or drawn through between the series of tubes-the steam being then inside the
tubes.
2
"
1007
H. GARDNER,
166, Fleet Street, London,
Agent for the said G. Seagrave.

page_text: Improvements in or Connected with Apparatus for Heating or
Cooling Air, Gas, or other Fluids.
I GEORGE SEAGRAVE of Chelsea Gardens, in the county of Middlesex, Engineer, do
hereby declare the nature of my said 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 certain detail improvements in apparatus previously
patented by myself and by Matthew Stobbs on the 18th day of November in the year
1879 No. 4685 and also by myself and by Samuel Bourne Bevington on the 23rd day
of February in the year 1881 No. 773.
The specification of those patents describe constructions of apparatus and arrange-
ments of parts thereof by which air is heated either by direct heat from a furnace,
from live or exhaust steam, hot water or otherwise, while the air is being driven or
drawn in rapid motion through the apparatus, by pressure or by exhaust.
Now according to my present invention, the object being the same, I make the
casing in such a manner that the pipes or tubes and also the boxes are supported from
one end only in fixed position, the other end being held in free suspension and I thus
provide for expansion and contraction of said tubes and boxes or chambers within
their casing.
The air spaces may be provided with an archimedian screw blade of any desired
pitch or its equivalent for increasing the length of travel of the air, and the tubes may
be securely fixed into their position in the boxes forming chambers by being expanded
into same by a tube expander, or they may be gland packed as desired.
The tubes and the boxes or chambers may be arranged vertically or horizontally.
My invention will be more clearly understood from an examination of the annexed
sheet of drawings of which Figure 1 is an external elevation, Figure 2 a plan,
Figure 3 a vertical section and Figure 4 a transverse section of an apparatus
constructed as and suitable for the purposes before described.
A is a shell or casing of annular or other desired form provided with inlet
openings B, U and P for admission of steam or other heating agency at will; the
opening B can be also used if required for clearance purposes.
Between the casing A and top cover C are double partition plates D, E, into which
a series of pipes or tubes F, F, and a series of pipes or tubes G, G, are fixed and held
in suspension, said partition plates D, E, forming a chamber between them for the
admission of the air to be heated in the direction shown by the arrows.
In this chamber a baffle plate I is provided to direct the air in the course shown by
the arrows.
The lower ends of the pipes or tubes F, F, and the pipes or tubes G, G, are
similarly connected to plates J. K which with the ring L forms an air chamber.
M. N are connecting bolts,

page_text: It will be observed that the lower air chamber is of less diameter than the interior
of the casing A so that the steam or other heating agency which may be admitted
through the openings P, B or U may fill and surround the tubes F, F, and G, G,
forming the annular columns for the air passages.
V is a draw off or escape pipe for condensed steam.
I have referred to the apparatus shown on the annexed drawings as applied for
heating air, the invention is equally applicable for cooling.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what 1
claim is
The apparatus shown on the annexed drawings in which the arrangement of the
suspension pipes F, F, G, G, and plates D, E, J, K, form the essential features as and
for the purpose or purposes set forth.