Improved Valve for Air-cushions and the like, adapted to be Inflated by the Breath of the User.
Year: 1899

page_text: Date of Application, 1st Mar., 1899-Accepted, 8th Apr., 1899
[Communicated from abroad by the Firm of GEORG MÜLLER & Co., of Gmünd,
in the Kingdom of Wurtemberg, German Empire, Manufacturers.]
Improved Valve for Air-cushions and the like, adapted to be Inflated
by the Breath of the User.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 322, High Holborn, in the County of Middlesex, 6, Lord Street,
Liverpool, and 6, Bank Street, Manchester, both in the County of Lancaster, and
Lower Temple Street, Birmingham, in the County of Warwick, Civil 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 follow-
ing statement:-
The object of the present application consists of a valve applicable for inflating
air-cushions, air-bags and the like, and which is usually filled with air from a
person's mouth. By the special arrangement of this valve the advantage is obtained
of being able to inflate the air cushion or the like puffs without the air flowing
out again, and also of being able to quickly expel the air from the cushion if
required by merely lifting the valve.
In the accompanying drawings the improved valve is illustrated as follows:-
Figures 1 and 2 shew longitudinal sections of the valve in various positions.
Figure 3 is a transverse section on the line A-A, Figure 1.
Figures 4 and 5 other views, also in various positions.
The valve consists of a casing a¹, a² which is fastened to the air-cushion a by
means of a disk b and nut c, so that the part a² is situated within the air cushion,
whilst the other part a is outside the same.
The casing a ² serves for the reception of the valve d. This latter is hollow
and bears on one end fixed by means of a pin d², the elastic valve e formed of
rubber, leather or the like substance the opening of which valve at is closed as
follows:-
The valve d is pressed against the opening at by means of the spring, g which
has its fulcrum on the perforated screw cap hati.
The valve engages by means of a pin f formed as a handle in an angle slot a³
of the casing a, a²; the valve d generally fits exactly the interior of the
casing a, a but at the part of the valve which bears the valve e it is somewhat
narrowed as shewn, so that there remains an annular space between the said plug d
and the casing a². At this point the plug d is provided with a perforation d.
The operation of this valve is as follows:-
The valve is normally in the position shewn in Figures 1 and 4, when the
valve e with its plug d is firmly pressed on its seating by means of the spring g
so that no air can either enter into or escape from the cushion.
If, however, the valve be lifted by hand from its seating (the spring 9 being
stretched) whilst the handle f is moved in the slot a³ in the direction of the arrow
shewn in Figure 1, (Figure 2), then air can be blown into the cushion or the

page_text: like to which the valve is applied, through i, d, d¹, at, or air can be let out of
the cushion. In this raised position the valve plug can be fixed, the pin f
engaging like a bayonet catch in the horizontal part of the angle slot.
The valve in its closed state (Figure 1) can also be absolutely secured in its
position by means of the screw nut k (Figure 4) the same being screwed upon the
outside of the screw-threaded casing a¹, a² on to the pin f
By repeated lifting of the valve plug, blowing in air and closing the valve, an
air cushion fitted with a valve of this kind can be inflated without trouble.
The force of the spring g can be easily regulated,, if necessary, by means of the
screw cap h.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is:-
...
1
4.
1.
1. Improved valve for air cushions having a valve body contained in a cas-
ing (a, a) the valve (e) of which opens by the drawing back of the valve plug
by means of a handle (f) passing through a slot (a³) of the said casing, and enables
the air to enter the cushion, whilst on the release of the valve plug, the valve is
closed by means of the spring (9), substantially as described.
.2. In combination with a valve such as set forth in Claim 1, 'the arrangement
for holding the valve plug in the raised position by means of a pin and angle-slot,
substantially as described, and shewn.
3. In combination with a valve for air-cushions as characterized in Claim 1,
the device for securing the valve (e) in its closed state by means of the superposed
screw nut k, substantially as described and shewn.
D
1 1
יז
1055.
W. P. THOMPSON & Co.,
322, High Holborn, London, W.C., Patent Agents for the Applicant.