Apparatus for Projecting Highly Heated Air under Pressure for Therapeutic Purposes.
Year: 1899

page_text: Date of Application, 15th Dec., 1899
Complete Specification Left, 31st Aug., 1900-Accepted, 27th Oct.,
1900
PROVISIONAL SPECIFICATION.
Apparatus for Projecting Highly Heated Air under Pressure for
Therapeutic Purposes.
I, BENJAMIN JOSEPH BARNARD MILLS, of 23, Southampton Buildings, in the
County of London, Patent Agent, do hereby declare the nature of this invention
(a communication to me from Louise Prat, (née Louise Minard) Gentlewoman,
of 3, Place Bellecour, Lyons, France) to be as follows:-
The apparatus forming the subject of the present invention is intended for the
application of a new therapeutic method which consists in projecting upon the
affected parts a small jet of air heated to a high temperature, with the object
of benumbing, purifying or cauterizing such parts.
The accompanying drawing shows the arrangement of the complete apparatus.
a is a reservoir which may be of various dimensions according to the import-
ance of the installation, and in which air is compressed to a pressure which
may rise to 50 atmospheres according to requirements. b is a main conduit
capable of supplying one or several apparatuses similar to that about to be described
and which is represented in the drawing at c.
c is a tube which is made
The said apparatus is of the following construction
of or covered with badly-conducting material to enable it to be readily handled,
it is closed at its upper part by a cap or stopper d, on to which are screwed
nozzles of different shapes, such for instance, as e, which serve to project the
hot air upon the affected part. At the lower part it carries two tubes, one at its
axis, serving to receive the heating apparatus f, the other at the side provided
on the exterior with a regulating cock to which is connected a flexible tube h,
conveying compressed air to the interior of the tube.
Between the conduit band the cock g, is interposed a reducing valve p, of
any known and suitable construction, bringing the air from the reservoir to the
most convenient pressure for the operation for which it is required.
The air thus introduced into the tube e, is heated near its exit by a platinum
tube f, closed and brought to incandescence by a current of carburetted air
entering the interior. For this purpose a special conduit i, branching from the
conduit conveys a current of compressed air to the interior of a reservoir /, con-
taining a sufficiently volatile hydro-carbon; the air mixed with the carburetting
vapors, is delivered by a conduit m, into a tube, n, surrounded by a tube which
traverses the apparatus c axially and is terminated by the platinum tube f. After
having maintained incandescence, it leaves the apparatus by the exterior tube r,
whence it escapes into the atmosphere by an opening o, formed in said tube.
The entrance of air into the reservoir 7. is regulated by a cock k; the valve j
serves to isolate the reservoir at the end of the operation without disarranging the
opening of the cock k.
According to the quantity of air consumed by the jet or nozzle e, and the
temperature desired to be given to it, larger or smaller platinum tubes are

page_text: employed, and the supply of carburetted air is regulated to maintain their
incandescence.
The tubes m and h, which lead to the apparatus e, are flexible thereby enabling
the apparatus to be readily manipulated and to conduct the air to the affected
part, the jet can be moderated or stopped during the operation by means of the
cock g.
Before directing the carburetted air into the platinum tube f, the operation
is commenced by heating said tube to incandescence which is then maintained
by the gaseous current. a is a stop cock between the conduit and the reser-
voir a, and is a stop cock between the reducing valve p and the tube h.
Dated this 15th December 1899.
HARRIS & MILLS,
23, Southampton Buildings, London, W.C., Agents.
Apparatus for Projecting Highly Heated Air under Pressure for
Therapeutic Purposes.
1, BENJAMIN JOSEPH BARNARD MILLS, of 23, Southampton Buildings, in the
County of London, Patent Agent, do hereby declare the nature of this invention
(a communication to me from Louise Prat, (née Minard) Gentlewoman, of 3,
Place Bellecour, Lyons, France.) and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement:
The apparatus forming the subject of the present invention is intended for the
application of a new therapeutic method, which consists in projecting upon the
affected parts a small jet of air heated to a high temperature, with the object
of benumbing, purifying or cauterizing such parts.
The drawing accompanying my Provisional Specification shows the arrange-
ment of the complete apparatus.
a is a reservoir, which may be of various dimensions according to the import-
ance of the installation, and in which air is compressed to a pressure which
may rise to 50 atmospheres, according to requirements. is a main conduit
capable of supplying one or several apparatuses similar to that about to be described
and which is represented in the drawing at c.
The said apparatus is of the following construction. c is a tube, which is made
of or covered with badly-conducting material to enable it to be readily handled:
it is closed at its upper part by a cap or stopper d, on to which are screwed
nozzles of different shapes, such for instance as e, which serve to project the
hot air upon the affected part. At the lower part it carries two tubes, one at its
axis, serving to receive the heating apparatus f, the other at the side provided
on the exterior with a regulating cock g, to which is connected a flexible tube h,
conveying compressed air to the interior of the tube c.
of
Between the conduit 6 and the cock is interposed a reducing valve
any known and suitable construction, bringing the air from the reservoir to the
most convenient pressure for the operation for which it is required.
The air thus introduced into the tube e is heated near its exit by a platinum
tube closed and brought to incandescence by a current of carburetted air
entering the interior.
For this purpose a special conduit branching from the conduit b, con-
veys a current of compressed air to the interior of a reservoir containing a
sufficiently volatile hydro-carbon the air, mixed with carburetting vapors.

page_text: is delivered by a conduit m into a tube n surrounded by a tube r, which traverses
the apparatus c axially and is terminated by the platinum tube f. After having
maintained incandescence, it leaves the apparatus by the tuber, whence it escapes
into the atmosphere by an opening o formed in said tube. The entrance of air
into the reservoir is regulated by a cock k; the valve j serves to isolate the reser-
voir at the end of the operation without disarranging the opening of the cock k.
According to the quantity of air consumed by the jet or nozzle e, and the
temperature desired to be given to it, larger or smaller platinum tubes are
employed, and the supply of carburetted air is regulated to maintain their
incandescence.
The tubes m and h which lead to the apparatus c, are flexible, thereby enabling
the apparatus to be readily manipulated and to conduct the air to the affected
part; the jet can be moderated or stopped during the operation by means of the
cock g.
Before directing the carburetted air into the platinum tube f, the operation
is commenced by heating said tube to incandescence, which is then maintained
by the gaseous current.
al is a stop cock between the conduit b and the reservoir a, and p¹ is a stop
cock between the reducing valve p and the tube h.
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:-
1. An apparatus for projecting air at a determined pressure and temperature,
in which the air to be projected, passing from a reservoir under high pressure,
is reduced to the desired pressure and introduced into a portable tube, in which
it is heated before its exit, by the incandescence of a platinum tube, obtained
by a current of air coming from the same reservoir and carburetted before its
entry into the apparatus, substantially as set forth.
2. In an apparatus for projecting air at a determined pressure and temperature,
the combination of a high pressure air reservoir, a reducing valve, an air
carburetting apparatus, tubes connecting the compressed air reservoir with the
reducing valve and carburetting apparatus, a non-conducting air heating and
projecting apparatus connected by tubes to the reducing valve and carburetting
apparatus, and regulating and stop cocks on the tubes connecting the compressed
air reservoir with the reducing valve and carburettor and on the tube connecting
the reducing valve with the air heating and projecting apparatus, substantially
as set forth.
3. In an apparatus for projecting air at a determined pressure and temperature,
the combination with a high pressure air reservoir, a reducing valve and a
carburetting apparatus connected together by tubes provided with suitable stop
cocks and regulating cocks, of an air heating and projecting apparatus consisting
of a closed non-conducting cylinder having an air projecting nozzle at one end.
a movable central tube connected to the carburettor by a flexible tube and con-
veying the carburetted air to the interior of the apparatus near to the nozzle.
a tube surrounding said central tube and closed at its upper end by a closed
platinum tube and passing to the exterior of said apparatus where it is provided
with an exit orifice, and a short side tube at its lower end provided with a
regulating cock and connected to the reducing valve by a flexible tube fitted with
a stop cock, substantially as herein set forth.
Dated this 31st dor of Juont 1000
HARRIS & MILLS,
23, Southampton Buildings, London, W.C., Agents