Improved Means for Securing Nozzles to Inflatable Vessels, and in Forming Air Valves therefor.
Year: 1894

page_text: :
Date of Application, 19th Dec., 1894
Complete Specification Left, 19th Sept., 1895-Accepted, 26th Oct., 1895
PROVISIONAL SPECIFICATION.
Improved Means for Securing Nozzles to Inflatable Vessels, and in
Forming Air Valves therefor.
I, JONATHAN WILLIAMSON DUNN, of The Hollies, Trent Vale, Stoke on Trent,
in the County of Stafford, Gentleman, do hereby declare the nature of this invention
to be as follows:-
:
In the Specification of a former Patent granted to me No. 21264 of the year 1893
I described an air tight method of securing the valve or nozzle to the vessel. This
method consisted in forcing a bulb formed on the stem of the valve or nozzle into
a short cylinder of indiarubber fixed at the centre of a disc of the same material
cemented to the vessel.
According to this invention I employ a similar disc and cylinder of indiarubber
but in place of forming the bulb on the stem I form it on a separate short metal
tube through which the stem is passed. The stem has a screw thread upon it and
a tight joint is made between its outside and the inside of the tube by a small ring
of indiarubber which is rolled in between them when the stem is being inserted.
The inner end of the stem has 'fixed to it a cap fitting the indiarubber covering of
the bulb and this cap is forced against the bulb by a nut upon the outer end of
the stem. At the end of the stem just inside the cap are air holes.
To inflate the vessel the nut is slacked thus separating the cap and bulb and
uncovering the air holes. Air is then forced into the vessel by a pump or otherwise
in the usual way and the nut is then again screwed up making a tight joint between
the cap and bulb.
COMPLETE SPECIFICATION.
Improved Means for Securing Nozzles to Inflatable Vessels, and in
Forming Air Valves therefor.
I, JONATHAN WILLIAMSON DUNN, of The Hollies, Trent Vale, Stoke on Trent,
in the County of Stafford, Gentleman, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement :—
In the Specification of a former Patent granted to me No. 21264 of the year 1893
I described an air tight method of securing the valve or nozzle to the vessel. This
method which is illustrated by Figures 1 and 2 of the annexed drawings consisted
in forcing a bulb formed on the stem of the valve or nozzle into a short cylinder
of indiarubber fixed at the centre of a disc of the same material cemented to the
vessel.
.
a is a
Figure 1 is a longitudinal section and Figure 2 is a transverse section.
portion of the vessel to be inflated, in this case the pneumatic tube of a bicycle
TD 037
.

page_text: tyre. bis the india rubber disc cemented to the vessel a and 6' is a cylinder or
short tube formed of a piece with the disc b. In Figure 2 the cylinder 6 is shown
embracing a bulb c and so making an air tight joint with the said bulb which as
here shown is formed upon a stem e' through which air is forced into the pneumatic
tube to inflate it.
Figure 3 illustrates my present invention and also shows a transverse section of
the pneumatic tube of a bicycle tyre.
According to this invention I employ a similar disc b and cylinder 6' of india-
rubber but in place of forming the bulb c on the stem to which in Figure 2 it is
shown to be attached I form it on a separate metal tube d which is held in place
by a nut d¹ and through which the steme is passed. The stem e is hollow and it
is adapted to be connected with the inflating pump, it has a screw thread upon it
and a tight joint is made between its outside and the inside of the tube d by a
small ring of indiarubber f which is rolled in between them when the stem is being
inserted. The inner end of the stem has fixed to it à cap el fitting the indiarubber
covering of the bulb c and this cap is forced against the bulb by a nut ŋ upon
the outer end of the stem e. At the end of the stem just inside the cap are air
holes e³.
To inflate the vessel a the nut 9 is slacked thus separating the cap e¹ and bulb o
and uncovering the air holes e. Air is then forced into the vessel by a pump or 1
otherwise in the usual way and the nut is then again screwed up making a tight.
joint between the cap and bulb.
Figure 4 shows a modification of the parts a, b, b, c, e and e', but the cap e¹ does
not serve as an air valve, it is however made to nip the indiarubber b' by a nut h
screwed upon the stem e. The stem has a passage through it from end to end:
and contains an air valve consisting of a tube i having a closed end which is made
to abut upon an elastic seating at k. The tube i has a screw thread upon it at its
outer end which is intended for the attachment of the air pump. The air passes
out of the tube i by the holes and (the valve being open), it passes by the
seating at k and up the passage in the steme to the interior of the inflated tube a
or vessel a. The valve tube has a collar upon it at and this is held within a
sleeve against a flange within the sleeve by the cap which is screwed into
the outer end of the sleeve. The sleeve works upon a screw thread on, the exterior
of the stem e so that by turning the sleeve the valve can be opened and closed.
An air tight joint is made between the parts e and by an indiarubber ring fas
in Figure 3; this ring entirely prevents the air passing but nevertheless allows
free movement.
Figure 5 shows another modification. Figure 6 is a section on the line 6, 6 in
Figure 5. The valvular arrangement is very similar to that shown by Figure 4.
The indiarubber at b¹ grips a nozzle at the upper end of the stem e to which a
cap el is secured by a screwe. The valve i has wings upon it which are
received into slots at the end of the stem e so that the valve is prevented from
turning within the stem but can move longitudinally. The cap is screwed on to
the stem e and abutting on the wings forces the valve, to its seat. When the cap
is slackened the valve can open. is the india rubber ring making a tight joint
between the parts e and i without interfering with the movement of the valve.
"
m is a collar formed on the stem to prevent its being drawn too far through.
In Figures 3, 4 and 5 the annular passage closed by the ring is preferably
made slightly taper so that the further the valve tubes are pushed down the more
the ring is compressed.
.
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 :-
1. The means substantially as described in respect to Figure 3 for securing
nozzles to inflatable vessel's and forming valves therefor.

page_text: 2. In combination with air valves substantially as described a ring f forming an
air tight joint whilst leaving the valve free to open and close.
3. Nozzles with air valves as shown by the annexed drawings.
Dated this 16th day of September 1895.