Year: 1898

page_text: I, HERBERT JOHN DOWSING, 24, Budge Row, Cannon Street, London, E.C., do
hereby declare the nature of this invention to be as follows;-
1
My invention consists of an apparatus for concentrating reflecting or diffusing
radiant heat.
The heat producing source is partly surrounded or enclosed by reflectors which
may be made according to Letters Patent granted to me No. 26249 Nov. 20th,
1896, having the projecting surfaces therein described for reflecting and dispers-
ing the heat rays, and directing them away from the heat producing source. These
heat rays are caused to impinge upon other reflectors with corrugated or suitably
made irregular surfaces, and so diffused over a large area.
By the use of a number of these reflectors so arranged as to form one complete
apparatus, the heat received from the radiating source can be projected and passed
on in any direction, concentrated or diffused as may be required.
I usually prefer employing bright metallic reflectors, but in certain cases
where a portion of the heat is required to be absorbed and to warm the air by
contact as well as by radiation at a lower temperature, I use metals, asbestos, or
other materials which absorb and radiate heat freely.
In some cases, I prefer using in conjunction with the first set of reflectors, a
diffusing arrangement with corrugated or other suitably shaped surface, in order
to break up and disperse the heat rays.
To reduce the intensity of the heat rays, or to vary their direction, I interpose
screens composed of heat absorbing or transmitting material, between the heat
producing source, and the space or part to be heated. In some cases, when the
source of heat is of a luminous character, I cut off the whole or greater part of the
heat rays, and allow only light to penetrate, with a small amount of heat. In this
case two screens may be used, one for absorbing or obstructing, and the other for
radiating heat; the removal of either allowing the transmission of heat, or light
and heat as required.
The whole apparatus may form an enclosure, and the parts may be connected
by any heat resisting material, and thermometers, pyrometers, and other means
of measuring heat may be employed.

page_text: Improvements in Apparatus for Utilising Radiant Heat and Light.
I, HERBERT JOHN DOWSING, of 24, Budge Row, Cannon Street, in the City of
London, Electrical Engineer, 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 apparatus for utilising radiant heat or light, or com-
bined heat and light for medical and other purposes by which the whole or part
of the human body may be conveniently subjected to light and heat which may be
regulated and modified according to requirements, and the special object of the
improvements which form the subject of the present invention is to provide means
for the more perfect concentration, reflection, and diffusion of the radiant heat or
light.
The radiating source is partly surrounded or enclosed by reflectors the surfaces
of which reflect and disperse the rays and direct them away from the radiating
source. These reflectors may be of the kind described in the Specification of my
Patent No. 26249 of November 20th 1896. The heat or light rays are caused to
impinge upon other reflectors with plain, corrugated, or other suitable irregular
surfaces and are thus diffused over a large area. By the employment of a number
of such reflectors arranged so as to form one complete apparatus the heat or light
received from the radiating source can be projected and passed in any direction and
may be concentrated or diffused as may be required.
In the accompanying drawings is illustrated an apparatus constructed in accord-
ance with this present invention, Figure 1 being a longitudinal section on
line XX of Figure 2, and Figure 2 being a transverse section on line Z-Z of
Figure 1. A are incandescent electric lamps which in this case form the heat
or light producing source, they are supported partly by their connexion to the ends
of the chambers B and partly by metal clips U secured to the angular reflectors D
as shown. The chambers B are constructed of copper or other suitable metal or
material the interior surfaces of which comprise a number of reflecting planes, as
shewn, by which the rays from the lamps A are reflected on to the limb or other
part under treatment and which is placed between the two chambers B supported
on or in asbestos or other cushions, supports, or slings. The chambers B are shewn
mounted adjustably on a base E in such a manner that they may be drawn apart
by the handles F to any desired extent or brought together in a very compact or
portable form. G are hinged folding flaps or doors for closing in one end of the
pair of chambers B, and H is a cover plate provided with slots at suitable distances
apart which take over the studs I in the top of the chambers B. Any number of
these chambers may be placed in combination so as to form a complete apparatus
adapted to enclose or more or less surround the body or part thereof which is under
treatment, and the heat or light from the radiating source can be projected and
passed in any direction, concentrated or diffused as may be required. The
chambers B may be employed with or without the base E, folding doors or flaps G,
and cover plate H according to circumstances.
I usually prefer to use bright metallic reflecting surfaces, but in certain cases
where a portion of the heat is required to be absorbed and to warm the air by con-
tact as well as by radiation at a lower temperature I use metals, asbestos or other
materials which absorb and radiate heat freely.
In the drawings plain reflecting surfaces are shewn, but in cases where it is
required to break up and disperse the rays I employ corrugated or other suitably-
shaped diffusing surfaces either entirely, or in combination with plain surfaces.
In order to reduce the intensity of the rays or to vary their direction I provide

page_text: screens J interposed between the radiating source and the limb, for example, under
treatment, which screens are so mounted in frames K that they may be removed
and others easily substituted. The frames K may be adapted to slide in guide-
ways in the ends of the chambers B and may be drawn up out of action when not
required by means of the chains or cords L. And in some cases, where the radiat-
ing source is of a luminous character I may thus cut off the whole, or greater part
of the heat rays, and only allow light to penetrate. Or two screens may be
employed in combination, one for absorbing and obstructing, and the other for
radiating heat, the removal of either allowing the transmission of heat, or of light
and heat, as may be required.
bo
The chambers B may be made to form an enclosure of any desired size or shape
and may be covered in or connected by any heat-resisting material, and may
furnished with thermometers, pyrometers, and other heat-measuring or indicating
devices.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed I declare that what
I claim is:
First. In apparatus for utilising radiant heat and light surrounding or enclosing
the space or part under treatment by chambers containing the radiating source and
reflecting, dispersing, concentrating and diffusing devices, substantially as
described.
Second. Apparatus for utilising radiant heat and light which consists of cham-
bers B containing the radiating source, folding doors or flaps G, and cover plate H,
combined and arranged substantially as described with reference to the drawings.
Third. Apparatus for utilising radiant heat and light which consists of cham-
bers B containing the radiating source, with or without folding doors or flaps G,
and cover plate H mounted adjustably on a base plate E, combined and arranged
substantially as described with reference to the drawings.
Fourth. In apparatus for utilising radiant heat and light the employment of
screens between the radiating source and the space or part under treatment sub-
stantially as described with reference to the drawings, and for the purposes
specified.
Fifth. The apparatus for utilising radiant heat and light combined, arranged and
operating substantially as described with reference to the drawings.
1000
Datta
THIS DOC way
1000
1030.
H. J. DOWSING.
Per W. H. Beck,
Agent, 115, Cannon Street, London, E.C.