Improved Means for Heating and Purifying Air.
Year: 1895

page_text: Date of Application, 1st Jan., 1895
Complete Specification Left, 30th Sept., 1895-Accepted, 23rd Nov.,
1895
PROVISIONAL SPECIFICATION.
Improved Means for Heating and Purifying Air.
I, EDWARD PREW, of 1 Corporation Street, Barnsley, in the County of York,
Schoolmaster, do hereby declare the nature of this invention to be as follows :-
As now ordinarily arranged, a large percentage of the heat resulting from the
combustion of fuel in domestic fire places is permitted to ascend into the open air
without being utilized for any purpose whatever.
Now the object of my invention is to utilize this heat as the results of combustion
ascend for heating, and in some cases purifying the atmosphere in one or more
compartments in addition to that in which the fire is situated.
For this purpose I secure a curved pipe in one side of the chimney in such a
manner that the middle portion thereof projects into said chimney and its ends
open, one above the other, into the compartment required to be heated.
The pipe may be attached to, or formed, on a plate capable of being secured in
an opening in the chimney thus allowing of said tube being removed when the
chimney is being swept, or for any other purpose.
The result of this arrangement is that the heated gases of combustion ascending
the chimney impinge upon the middle portion of the pipe and so heat it, the
consequence being that a current of air takes place through said pipe and cold air
entering at the lower end of the tube and after its temperature has been raised and
as a consequence its specific gravity lowered escaping from the upper end thereof
as will be perfectly understood.
Where found desirable this current of air may be purified by placing a filter of
charcoal or the like in the pipe at a suitable point.
CASTLE SMITH,
Invention" Office, 54 Fleet Street, London, E.C.,
Agent for the Applicant.
Improved Means for Heating and Furnying An.
I, EDWARD PREW of Corporation Street Barnsley in the County of York
Schoolmaster 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 :-
As now ordinarily arranged a large percentage of heat resulting from the
combustion of fuel in domestic fire-places is permitted to ascend into the open air,
or to spend itself into the chimney flues without being utilized for any purpose
whatever.
The object therefore of my present invention is to employ a new or improved
apparatus whereby this hitherto wasted heat may be utilized for warming or
increasing the temperature of a room chamber or other compartment by the air
within such compartment circulating through said apparatus thus gathering the

page_text: heat therefrom and conducting it by the movement of the air throughout the room,
by this means it will be obvious that draughts caused by currents of cold air, as is
the result with waste heat utilizers which receive air from the outside of room, are
prevented.
I construct and arrange my apparatus substantially as described with reference
to the accompanying sheet of drawings in which
Fig. 1. is a front view of my apparatus applied to an ordinary domestic fire-place
flue or chimney, and Fig. 2 is a cross sectional elevation taken on broken line a a
of same.
Fig. 3 is an isometric perspective view of my improved apparatus shown applied
to an ordinary domestic chimney and operating within two separate chambers or
rooms and,
Fig. 4. is a sectional elevation of a series of chambers one above the other having
a common vertical flue with fire-place and showing my apparatus operating within
several compartments.
Similar letters of reference denote corresponding parts in each view.
1 employ a curved pipe P preferably composed of metal and having a coat of
any well known heat absorbing and radiating substance, and I prefer to make with
or attach to the pipe P, a plate p' which I hinge or otherwise fasten to the front
or any convenient part of the chimney C, having previously formed a hole c¹
therein in order to allow the middle portion p² of pipe P to extend into the
chimney flue c² a suitable distance.
The said middle portion på is preferably spherical in form and a little larger in
diameter than the remainder of the pipe, and the lower opening på is larger in
area than the upper opening pt and both are open to the room R required to be
heated.
By the use of the plate p' and the hinging or otherwise easy securing thereof to
the chimney C the tube P may be easily removed for cleaning or when it is desired
to sweep the chimney flue c*.
The result of my improved apparatus and arrangement is that the heated gases
of combustion ascending the flue impinge upon the pipe P and the heat is
conducted to the inner part of said pipe in consequence of which a current of air
takes place through said pipe P the cooler air from the chamber R entering at the
opening p and after its temperature has been raised it exits at pt having during
its passage through the pipe P collected heat which otherwise would have passed
up the flue 2.
This heated air circulates through the room or chamber R.
When required to disinfect, fumigate, or purify the air in the chamber R I fit a
perforated screen or plate s near the exit end p* of the apparatus and I place upon
it cither charcoal, sponge or other porous substance which may contain any required
disinfecting or fumigating substance.
The air passing through the apparatus P circulates throughout the chamber R
impregnates the atmosphere therein with the substance used, or the air passing
through a suitable medium at s obviously becomes purified.
Referring to Fig. 3 the upper chamber R is heated solely by the apparatus P
which gathers the waste heat from the flue c² and distributes it in the manner
described.
Referring to Fig. 4. all the chambers R, are shown as heated solely by the what
otherwise would be the waste heat ascending the flue c².
It will be obvious that my apparatus would be useful for conservatories and
similar hot houses and for fumigating the plants, as the air gets a thorough
circulation throughout the house R.
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 I
claim is.
1. In apparatus for heating and purifying air the combination with a chimney

page_text: flue of a bent tube P having a part thereof extending within the flue and its two
ends situated one above the other and open to the same room R substantially as
described and for the object specified.
2. In apparatus P arranged as described the use of a screens with charcoal or
other air filtering medium with or without fumigating or disinfecting substance
substantially as described.
3. Apparatus consisting of a tube P having openings p³ and p¹ and an enlarged
projecting portion p² arranged substantially as described and illustrated and used
for the purpose specified.
Dated this
day of Santambon 1005
H. F. BOUGHTON,
Barnsley, Registered Agent.