Improvements in or connected with Apparatus for the Inhalation of Oxygen.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in or connected with Apparatus for the Inhalation of
Oxygen.
I, FREDERICK WOODWARD BRANSON, of Commercial Street, in the City of
Leeds, Pharmaceutical Chemist and Scientific Instrument Manufacturer, do hereby
declare the nature of this invention to be as follows:
This invention has for its object the raising of the temperature of the oxygen
or mixture of the air and oxygen to be inhaled and the checking and controlling
of the amount of the oxygen used.
The apparatus consists of a cylinder or other suitably shaped vessel, provided
with one or more (suitably four) perforated cross diaphragms. An air inlet is
provided in the lowest chamber formed by the cross diaphragms. Round the
outside of the cylinder or vessel is provided a coiled tube of aluminium hereinafter
referred to as the oxygen.coil. The lower open end of the coil is connected
with the tube from the oxygen cylinder, and the upper end enters and terminates
in the uppermost of the chambers formed by the cross diaphragms. Preferably,
directly opposite this inlet from the oxygen coil is provided an outlet for the
mixture of air and oxygen, and to which the inhaler tube is attached; the mixing
of the air and oxygen taking place in the top chamber. The coiled
aluminium tube acts as a surface heater for the oxygen passing through it; that
is, that owing to the high conducting power of aluminium, the sides of the tube,
(if sufficiently long and of the proper size to afford the requisite amount of con-
ducting surface), conduct the heat from the atmosphere to the oxygen sufficiently
rapidly to raise the temperature of the oxygen before entering the mixing
cylinder almost to that of the surrounding air, or at least sufficiently for the
purpose of its use.
In order to check or control the flow of oxygen so as to avoid waste, I insert at
any convenient point in the connection between the oxygen cylinder and the
mixing cylinder any suitable pressure reducing or regulating valve; i.e. one which
subject to variation alone of the pressure in the oxygen cylinder, will deliver the
oxygen from the latter at a uniform pressure or rate. As however such uniform
pressure as is required may be different for different cases, I provide a check
valve, through which the oxygen passes on leaving the reducing or regulating valve,
so as to check or adjust the uniform flow to suit the particular case. This check
valve is provided with an index finger to facilitate the adjustment.
ST11007

page_text: Improvements in or connected with Apparatus for the Inhalation of
Oxygen.
I, FREDERICK WOODWARD BRANSON, of Commercial Street, in the City of
Leeds, Pharmaceutical Chemist and Scientific Instrument 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 has for its object the raising of the temperature of the oxygen
or mixture of the air and oxygen to be inhaled, and the checking and controlling
of the amount of the oxygen used.
The apparatus consists of a cylinder or other suitably shaped vessel hereinafter
termed the cylinder provided with one or more (suitably four) perforated or
gauze cross diaphragms. An air inlet is provided in the lowest chamber formed
by and below the lowest diaphragm. Round the outside of the cylinder or vessel
is provided a coiled tube of aluminium or other metal hereinafter referred to as the
oxygen coil.
The lower open end of the coil is connected with the tube from
the oxygen cylinder, and the upper end enters and terminates in the uppermost of the
chambers, that formed by and above the topmost diaphragm. Preferably directly
opposite this inlet from the oxygen coil is provided an outlet for the mixture of
air and oxygen, and to which the inhaler tube is attached; the mixing of the air
The coiled aluminium or metal
and oxygen taking place in the top chamber.
tube acts as a surface heater for the oxygen passing through it; that is, that owing
to the high conducting power of the aluminium or other metal, the sides of the
tube, (if sufficiently long and of the proper size to afford the requisite amount
of conducting surface), conduct the heat from the atmosphere to the oxygen
sufficiently rapidly to raise the temperature of the oxygen before entering the
mixing cylinder almost to that of the surrounding air, or at least sufficiently
for the purpose of its use..
In order to check or control the flow of oxygen, so as to avoid waste, I insert at
any convenient point in the connection between the oxygen cylinder and the
mixing cylinder any suitable pressure reducing valve, one which subject alone
to variation of the pressure in the oxygen cylinder, will deliver the oxygen
As however such pressure
from the latter at a uniform pressure or rate.
as is required may be different for different cases, I provide a check valve, through
which the oxygen passes on leaving the reducing valve, so as to check or adjust
the uniform flow to suit the particular case. This check valve is provided with
an index finger to facilitate the adjustment.
And in order that my invention and the manner in which the same is to be
performed may be more readily and clearly understood, I have annexed hereto
the accompanying sheet of drawings; in which Fig. 1 is a general outside view
of an apparatus for the inhalation of oxygen constructed in accordance with
my invention. Fig. 2 is a cross section of the mixing cylinder, and Fig. 3 is
an outside view, and Fig. 4 is a cross section of the checking or regulating valve.
In all the figures the same reference letters refers to the same or corresponding
part.
a is the mixing cylinder provided with the gauze or perforated diaphragms b.
c is the air inlet, admitting air to the lowest chamber in the vessel formed below
and by the lowest cross diaphragm. d is the oxygen coil, formed of aluminium
or other metal; which is coiled several times round the cylinder a, and whose
upper end terminates in the top chamber formed by and above the top

page_text: diaphragm. The lower open end of the coil is connected with the tube e from the
oxygen cylinder f. g is the outlet from the same top chamber of the mixing
cylinder, and which is situated preferably diametrically opposite the top open end
of the oxygen coil. h is the inhaler tube, one end of which is attached to the
outlet g.
2 is a pressure reducing valve, which is attached to the neck or mouth
of the oxygen cylinder by a screw and collar coupling j, in the usual manner.
To the outlet from the reducing valve is screwed the check valve; consisting
of the body m, having a valve seat n formed at the inner end of the inlet passage o
the screw cover p, to which is attached the valve spindle g, the inner end of the
latter being formed to fit the valve seat n; and the cover 2, which is provided on
the outside with a pointer r. Pin studs s limit the movement of the screwed
cover p.
t is the outlet to which the tube e is attached. By slightly rotating the
cover p in one direction or the other, the end of the valve spindle q is moved
to or from the valve seat n, reducing or enlarging the area of the passage past
the valve seat. Graduated marks figured 5, 10 and 20, on the outside of the
body m give, when the pointer is opposite them, the volume or speed of the
oxygen gas passing through the check valve.
The collar jis attached to
The milled cover p is rotated
The apparatus is used in the following manner.
the neck of the cylinder f in the usual manner.
until the pointer r is opposite zero on the graduations; the valve spindle q being
then closed tight against the valve seat n. The valve in the neck of the
cylinder is then opened by means of the ordinary key. The india rubber tube e
is then connected at one end to the outlet t of the check or regulating valve, and
at the other end to the lower end of the oxygen coil d. The milled head or
cover P is then rotated, so that the pointer is opposite the 5, 10 or other mark
according to the number of cubic feet of oxygen it is desired to administer to
the patient during one hour.
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. Apparatus for the 'administration of oxygen consisting of, a compresed
oxygen cylinder, a reducing valve, a check or regulator valve, a mixing cylinder
and surface heating coil all substantially as and for the purpose or purposes
herein set forth.
2. In apparatus for the administration of oxygen the use and construction of
a mixing cylinder provided with perforated or gauze diaphragms substantially
as set forth.
3. In apparatus for the administration of oxygen the employment of a metallic
surface heating coil substantially, as and for the purpose set forth.
4. In apparatus for the administration of oxygen the combination of a mixing
cylinder and a metallic surface heating coil substantially as and for the purpose
or purposes set forth.
5. In apparatus for the administration of oxygen the employment and com-
bination with a pressure reducing valve of a check or regulator valve between
the reducing valve and the mixing cylinder substantially as and for the purpose
herein set forth.
Dated this 20th day of March 1898.
J. CLARK JEFFERSON,
30, Park Row, Leeds, Agent for Applicant.