AN IMPROVED VALVE For APPARATUS FOR INHALING OXEGEN OR OTHER GASES IN COMBINATION WITH AIR AND FOR OTHER PURPOSES to be as follows:
Year: 1884

page_text: I, EDWARD BARLOW of 54 Poland Street in the County of Middlesex Chemist
do hereby declare the nature of my Invention for "AN IMPROVED VALVE For
APPARATUS FOR INHALING OXEGEN OR OTHER GASES IN COMBINATION WITH AIR
AND FOR OTHER PURPOSES to be as follows:-
"
My invention consists of a valve of brass or other suitable metal 'so constructed
that the different proportions of the gas, and atmospheric air desired to be inhaled,
can be accurately graduated, and which valve in combination with a bag or sack
of gold-beater's skin, or other suitable light and inelastic material, or other suitable
receptacle, and a stop-cock, of brass or other suitable metal forms a simpler, more
portable, and cheaper apparatus for inhaling oxegen or other gas in combination
with atmospheric air than has been employed hitherto. I make the valve thus. It
consists of two cylinders of brass or other suitable material one placed inside the
other, the outer ono 1/2" diameter, and the inner one 1" diameter, and each $/"
in length. They are closed at each end with covers. The dimensions above
mentioned may be varied if desired. The annular space between the two cylinders
is divided into two compartments of equal size by two thin sheets of metal which
connect the two cylinders together at points oxactly opposite to each other in
a horizontal line, and which at the points where they touch the inner cylinder are
thinned down to knife edges. In the outer cylinder are two circular apertures or
holes the centres of which are placed vertically opposite each other at right angles
to the partitions before mentioned. In the inner cylinder a slot which runs round
the entire periphery of said cylinder is made, and is divided into halves by the
knife edges of the partitions before mentioned. The width of this slot is regulated
by the size of the apertures, in the outer cylinder which are half an inch respectively
in diameter. The area of the whole of the slot is made exactly equal to the area
of the two apertures in the outer cylinder, and as the slot is divided into halves by
the knifo edges of the aforesaid partitions each half is of course equal to each
corresponding aperture in the outer cylinder. In the interior of the inner cylinder
is another cylinder made to fit into it and airtight. This last mentioned cylinder
is moveable. It is of brass or other suitable material, and is provided with a separate
cover at the back in the centre of which cover is a pin which penetrates the back
cover of the outside cylinder. The front side of this moveable cylinder is closed

page_text: by the front side of the outside cylinder. On the end or point of the pin, which
penetrates the centre of the back of the outside cylinder a hand is fixed with
a pointer at one end, and a small handle at the other, by means of which handle the
aforesaid pointer and also the moveable cylinder connected therewith can be
moved round to any required position. The aforesaid moveable cylinder has a slot
corresponding in width and position to the slot in the inner fixed cylinder herein-
before mentioned, but only half the length thereof. In the centre of the front side
of the outside cylinder is a circular aperture in which is fixed a tube, at the other
end of said tube is a mouthpiece of any suitable material and shape. At the lower
circular aperture in the outside cylinder the oxegen or other gas enters from the
bag or sack or other suitable receptacle into the lower annular compartment, the
upper circular aperture is open to the air which fills the upper annular compartment.
The portion of each drawn into the mouth by means of the mouthpiece will vary
according to the position of the moveable cylinder, which by its revolution alters
the size of the apertures leading to the two compartments aforesaid, and thus
regulates the proportion of air and gas drawn through. The proportion of each is
indicated by means of the pointer, on a semi-circular scale engraved on the outside
of the back of the outside cylinder. In order that accurate working of the apparatus
may be obtained, it is essential that the air and oxegen or other gas should enter
the apparatus under equal pressure, and with equal amount of resistance to the influx
of each, or if this is impracticable the difference must be ascertained and the pro-
portionate size of the apertures regulated accordingly. The cylinders are connected
to a stopcock of brass or other suitable material which stopcock is suitably connected
to the aforesaid bag or sack or other suitable receptacle for holding the oxegen or
other gas and which bag or sack or other suitable receptacle is of an ascertained
capacity. My invention is also applicable to liquids. Besides its portability the
apparatus possesses the advantage over others that through it pure gas can be inhaled
without admixture with air.

page_text: I EDWARD BARLOW of 54 Poland Street in the County of Middlesex Chemist,
do hereby declare the nature of my invention for "AN IMPROVED VALVE For
APPARATUS FOR INHALING OXEGEN OR OTHER GASES IN COMBINATION WITH AIR,
AND FOR OTHER PURPOSES" and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement:-
My invention consists of a valve of brass or other suitable metal so constructed
that the different proportions of the gas, and atmospheric air desired to be inhaled
can be accurately graduated, and which valve in combination with a bag or sack
of gold beater's skin or other suitable light and inelastic material, or other suitable
receptacle, and a stop-cock of brass or other suitable metal forms a simpler more
portable and cheaper apparatus for inhaling oxegen or other gas in combination with
atmospheric air than has been employed hitherto.
In the accompanying drawing,
Figures 1 & 2 are respectively an end elevation and a side view of the apparatus,
and Figures 3 & 4 are sections of the valve taken respectively through the lines A B
of Figure 1 and CD of Figure 2 with the handle and pointer removed. Like letters
indicate corresponding parts throughout the drawing.
с
In carrying my invention into practice I provide two cylinders, an inner
cylinder al, and an outer cylinder a of brass or other suitable metal, one placed
inside the other. Those cylinders are closed at each end. The annular space
between them is divided into two compartments of equal size by two partitions of
metal which connect said cylinders together at points exactly opposite to each other
in a horizontal line, and which at the points where those partitions touch the inner
cylinder a' are thinned down to knife-edges. In the outer cylinder a are two
circular apertures bc at right angles to the aforesaid partitions. A slot d is mado
around the entire periphery of the inner cylinder a', and is divided into halves by
the knife-edges of the partitions herein before mentioned. The width of said slot is
regulated by the size of the apertures bc in the outer cylinder. The area of the
whole of the said slot is made exactly equal to the area of the before mentioned
apertures bc in the outer cylinder, and as said slot is divided into halves by the
knife-edges of the aforesaid partitions, each half is of course equal to each corre-
sponding aperture in the outer cylinder a. Inside the inner cylinder a¹ is another
cylinder a made to fit into said cylinder a¹. The cylinder a² is moveable. It is of
brass or other suitable metal, and closed at one end, and at the other end provided
with a cover e. The closed end of the cylinder a fits into the front of the cylinder a¹
where it is fixed by means of a screw f, which screw at the same time serves for
connecting the pointer g to the central part of the cylinder a². A handle i allows
of the aforesaid pointer, and also the moveable cylinder a connected thereto being
moved round to any required position. In the moveable cylinder a² is a slot k
corresponding in width and position to the slot in the inner fixed cylinder a¹, but
only half the diameter of said last mentioned slot. In the centre of the cover e is
a circular aperture in which is fixed a tube 1, to the other end of which tube is a

page_text: mouthpiece m of any suitable material and shape. On the outside of the cylinder a,
a scale is engraved by means of which, and the pointer g manipulated with the
handle the proportions of air and gas drawn through are indicated. Through the
circular aperture c in the cylinder a the oxegen or other gas enters from the bag or
Back (or other suitable receptacle) n hereinbefore mentioned into the lower annular
compartment. The upper circular aperture b is open to the air which fills the upper
annular compartment. The portions of gas and air drawn through the mouthpiece
will vary according to the position of the moveable cylinder a² which by its
revolution alters the size of the apertures leading to the two compartments aforesaid,
and thus regulates the proportion of gas and air. The connection between the
sack n, and the remainder of the apparatus is by a stop-cock o of any suitable
construction. The bag or sack n is filled from an ordinary bottle with the oxegen
or other gas it is then detatched from the bottle and attached to the remainder of
the apparatus as shown by Figures 1 & 2. In order that accurate working of the
apparatus may be obtained it is essential that the air and oxegen (or other gas)
should enter the apparatus under equal pressure, and with equal amount of
resistance to the influx of each, and if that is impracticable the difference must be
ascertained and the proportionate size of the apertures bc regulated accordingly.
My invention is applicable to liquids also. Besides its portability, the apparatus
herein before described possesses the advantage that pure gas can be inhaled through
it without admixture with air.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
The combination and arrangement of the respective cylinders constructed in the
manner herein before mentioned, in connection with the other parts of the apparatus
hereinbefore mentioned as and for the purposes hereinbefore described and illustrated
in the accompanying drawing.