Improvements in Inflating Devices for Pneumatic Tyres.
Year: 1898

page_text: Improvements in Inflating Devices for Pneumatic Tyres.
I, ALBERT ISAAC MCCULLAH, Secretary of the Trench Tubeless Tyre Company,
Limited, of 34, Holborn Viaduct, in the City and County of London, do hereby
declare the nature of this invention to be as follows:-
This invention relates to an improved device for inflating so-called "tubeless "
tyres of which the "Trench and "Fleuss" are examples, without the use of a
valve by utilising the sealing flaps, lips or their equivalents as a non-return
valve.
The object of this invention is to so connect an inflating nozzle carried by the
inflating pump to the rim of the wheel that the position of the orifice of the said
nozzle with respect to the sealing flaps lips or their equivalents is accurately
determined, and cannot become displaced during the process of inflation.
According to this invention an inflating nozzle preferably of the needle type is
formed on or attached to the usual flexible attachment used with inflating pumps.
This nozzle is adapted to pass through a suitable hole in the wheel rim and to pass
partly under or between the sealing flaps or lips, as the case may be, and to so
engage with the said hole in the rim that it becomes temporarily fixed thereto
with its orifice in a predetermined position with respect to the said flaps or lips.
1f the wheel rim is one of the hollow type the hole in the inner or under
side of the rim is made of a D or equivalent shape and the nozzle is similarly
shaped and provided with a circumferential groove so that by inserting the nozzle in
the said hole and giving it a quarter or more turn it becomes temporarily fixed to
the rim with its orifice at a given distance from the bottom of the groove
of the rim.
If the wheel rim is one of the solid type it is more convenient to fix a socket
or bridge in or over the hole in it to receive the inflating nozzle, and such a device
may also be employed with hollow rims.
Alternative methods of attaching the inflating nozzle to the wheel rim are by a
bayonet joint, by a union nut, by a bridge clamp or by two flats and two
rounds.
By attaching the inflating nozzle as a permanency to the pump connection and
not fixing it to the wheel rim, all risk of losing or mislaying it is avoided, and as
there are no projections in the groove of the rim the mounting of the tyre therein
and consequently the formation of an initial seal or air tight joint between the
edges of the tyre is rendered more facile.
Ca
1000

page_text: I, ALBERT ISAAC MCCULLAH, Secretary of the Trench Tubeless Tyre Co.
Ltd., of 34, Holborn Viaduct, in the City and County of London, 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 :-
وو
""
This invention relates to an improved device for inflating so-called "tubeless"
tyres of which the "Trench and "Fleuss are examples-without the use of a
valve, by utilizing the sealing lips, flaps or their equivalents as a non-return valve,
the object being to so connect the inflating nozzle of the pump to the rim of the
wheel that the position of the orifice of the said nozzle with respect to the sealing
lips, flaps or their equivalents is accurately and positively determined and cannot
become displaced during the process of inflation.
In the accompanying drawing which illustrates-by way of example-some
methods of carrying this invention into practice:-
Figure 1 is a view in transverse section of a "Trench" tubeless tyre mounted in
a wheel rim and having the inflating nozzle in position for inflating.
Figure 2 is a similar view of a similar tyre under similar conditions with the
inflating nozzle in position for deflating.
Figure 3 is a similar view of a similar tyre under similar conditions with the
inflating nozzle withdrawn.
Figure 4 is a broken view in plan of the wheel rim showing the orifice for the
insertion of the inflating nozzle.
Figure 5 is a broken view in elevation of the inflating nozzle, and
Figure 6 is a view in plan thereof.
Figure 7 is a view in transverse section showing the application of the invention
to a "Fleuss" tubeless tyre, and
Figure 8 is a view showing an alternative method of attaching the inflating
nozzle to the wheel rim.
Throughout the views similar parts are marked with like letters of reference.
The inflating nozzle A which is of the needle type is formed on or attached to the
usual flexible attachment B commonly employed with inflating pumps.
This
nozzle A is adapted to pass through a suitably shaped hole in the wheel rim C and to
pass partly between, in tyres of the Trench type, and under in tyres of the Fleuss
type, the sealing lips, flaps or their equivalents, the engagement of the said nozzle
with the said hole in the rim being such that it becomes temporarily but positively
fixed thereto with its orifice at a predetermined distance from the bottom of the
groove of the rim and therefore with respect to the said lips, flaps or their equivalents.
A convenient method of temporarily fixing the inflating nozzle to the wheel rim is
that shown by Figures 1 to 7. The inflating nozzle A is formed with a circular
enlargement a, at a convenient distance from its needle end, which is provided with
one or more longitudinally arranged webs a¹, each having a recess or cut away
portion a formed therein. In the wheel rim C is fixed a socket D having a closed
end in which is a hole d¹ shaped to receive the enlargement and the webs a¹ of
the inflating nozzle, the thickness of the closed end d of the said socket being equal
to the width of the recess or recesses a formed in the web or webs a¹. If the wheel rim
is one of the hollow type the shaped hole d may be formed in the inner wall thereof.
To attach the inflating nozzle to the wheel rim it is passed into the hole in the
rim, or in the socket fixed thereto, until the recess or recesses a² coincides or coincide
with the inner wall of the rim or the closed end of the socket if one is employed,
when the nozzle is given a quarter turn-more or less-so that the webs a¹ cease

page_text: to coincide with slots in the hole d' whereby the inflating nozzle is retained in the
correct position with respect to the lips or flaps of the tyre for inflating. To deflate
the tyre the nozzle is turned until the webs a¹ again coincide with the slots in the
hole when it is pushed further between the lips or flaps thus forcing them apart
which allows the air in the tyre to escape.
As an alternative construction one or more flats may be cut or formed on the
enlargement & of the nozzle instead of the webs a¹ and the hole made to corre-
spond. A further modification consists in attaching the inflating nozzle to the
wheel rim by a bayonet, joint attachment as shown by Figure 8.
By attaching the inflating nozzle permanently to the pump connection and not
fixing it to the wheel rim all risk of losing or mislaying it is avoided, and as this
construction involves no projections in the groove of the rim-as with the ordinary
form of inflating valve now generally employed-the mounting of the tyre in the
rin and consequently the formation of a perfect initial seal or air-tight joint between
the edges or margins of the tyre is rendered more facile.
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) An inflating device for "tubeless" pneumatic tyres having automatic sealing
lips or flaps, consisting essentially of a needle pointed nozzle adapted to pass through
a hole in the wheel rim, or in a socket fixed thereto, and capable of being either
temporarily fixed therein by partial rotation with its orifice at a predetermined
distance from the edge or edges of the sealing lips flaps or their equivalents for the
purpose of inflating the tyre, or pushed further towards the centre of the tyre so as
to open the sealing lips flaps or their equivalents for the purpose of deflating the
tyre, as set forth.
(2) An inflating device for "tubeless" pneumatic tyres having automatic sealing
lips or flaps, consisting essentially of a needle pointed nozzle permanently attached
to the flexible connection of the inflator and adapted to pass through a hole in the
wheel rim or in a socket fixed thereto and capable of being either temporarily fixed
to the rim with its orifice at a predetermined distance from the edge or edges of the
sealing lips flaps or their equivalents for the purpose of inflating the tyre, or pushed
further towards the centre of the tyre so as to open the sealing lips, flaps or their
equivalents for the purpose of deflating the tyre, as set forth.
Tated th: 01.4 love of
1900
t day of June 1900
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech., E.,
Chartered Patent Agent, 70, Chancery Lane,
London, W.C., Agent for the Applicant.