Improvements in or relating to Inflated Tyres of wheels for Bicycles, Tricycles, and other Road Vehicles.
Year: 1891

page_text: Date of Application, 9th Mar., 1891
Complete Specification Left, 18th Sept., 1391-Accepted, 24th Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in or relating to Inflated Tyres of wheels for
Bicycles, Tricycles, and other Road Vehicles.
I, CHARLES HENRY WOODS of 41 Chorley New Road, Bolton in the County
of Lancaster, Cotton Spinner, do hereby declare the nature of my said invention
to be as follows:-
This invention refers to improvements in or relating to tyres of wheels for
bicycles, tricycles, and other road vehicles, wherein the said tyres are inflated by
means of air, gas, or liquids under pressure, for the purpose of effecting elasticity,
and immunity from vibration, and consists in providing the same with a non-return
valve in an economic and unique manner, which allows of the said valve being
This I effect by
operated upon or removed without opening the tyre as hitherto
securing to the hollow tyre a tube by means of a nut or its equivalent. The tube
is provided internally with a chamber or cavity in which is disposed a conical or
other stem, or valve, with inlet and outlet passages through which the inflating
medium is forced by means of a force pump or like device. The outlets in the
conical or other stem, or valve, are provided with an elastic or other suitable
medium; the stem or valve being secured in the chamber or cavity by a nut
screwed on the outside of the said hollow tube. The other end of the conical or
other stem, or valve, passes through the outside nut, and is provided with means
for readily attaching a pipe or its equivalent connected to the force pump or like
device.
When air, gas, or liquid is being forced into a hollow tyre the elastic or other
medium yields and allows the same to pass, and instantly closes the outlet passage
or passages when pumping ceases by its own elasticity or other means and the
pressure in the tyre. If desired the charging end of the stem or valve may be
provided with a cap to give additional security against leakage.
The advantages of this invention are, that the efficiency of the non-return valve
is ensured by means of the elastic or other medium covering the outlet passage
or passages, which is operated upon by the pressure in the inflated tyre; that the
projection on the outside of the tyre consists only of the aforesaid nut and the
upper part of the stem or valve to be attached to the pipe or its equivalent
connected to the pump or like device, and also that the non-return valve can be
removed without opening the tyre, thus effecting a saving in time and expense.
Dated the 7th March 1891.
EDMUND CHADWICK,
Agent.
COMPLETE SPECIFICATION.
Improvements in or relating to Inflated Tyres of Wheels for
Bicycles, Tricycles, and other Road Vehicles.
I, CHARL'S HENRY WOODS of 41 Chorley New Road, Bolton in the County
of Lancaster Cotton Spinner, do hereby declare the nature of my said 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 refers to improvements in or relating to tyres of wheels for
bicycles, tricycles, and other road vehicles, wherein the said tyres are inflated by
means of air, gas, or liquids under pressure, for the purpose of effecting elasticity,
and immunity from vibration, and consists in providing the same with a non-return

page_text: valve in an economic and unique manner, which allows of the said valve being
operated upon or removed without opening the tyre as hitherto. This I effect by
securing to the hollow tyre a tube by means of a nut or its equivalent. The tube
is provided internally with a chamber or cavity in which is disposed a conical or
other stem, or valve, with inlet and outlet passages through which the inflating
medium is forced by means of a force pump or like device. The outlets in the
conical or other stem, or valve, are provided with an elastic or other suitable
medium; the stem or valve being secured in the chamber or cavity by a nut
screwed on the outside of the said hollow tube. The other end of the conical or
other stem, or valve, passes through the outside nut, and is provided with means for
readily attaching a pipe or its equivalent connected to the force pump or like
device. When air, gas. or liquid is being forced into a hollow tyre the elastic or
other medium yields and allows the same to pass, and instantly closes the outlet
passage or passages when pumping ceases by its own elasticity or other means and
the pressure in the tyre. If desired the charging end of the stem or valve may be
provided with a cap to give additional security against leakage.
The advantages of this invention are, that the efficiency of the non-return valve
is ensured by means of the elastic or other medium covering the outlet passage or
passages, which is operated upon by the pressure in the inflated tyre; that the
projection on the outside of the tyre consists only of the aforesaid nut and the
upper part of the stem or valve to be attached to the pipe or its equivalent
connected to the pump or like device, and also that the non-return valve can
be removed without opening the tyre, thus effecting a saving in time and expense.
DESCRIPTION OF DRAWINGS.
Fig. 1 is an enlarged sectional clevation of one modification of my improved
non-return valve, and the method of securing the same to the rim or felly and the
inflating tube of pneumatic tyres of wheels of cycles and other road vehicles
inflated by means of air, gas, or liquids under pressure.
Fig. 2 is an enlarged sectional elevation of a modification of my improved non-
return valve and the method of securing same to the inflating tube by means of a
pap extending through the rim or felly of a pneumatic tyre.
Fig. 3 is an enlarged sectional elevation of another modification of my invention.
Fig. 4 is a sectional elevation of conical stem or valve with a separate piece
secured to outer end of the india-rubber, elastic, or other medium.
Fig. 5 is an enlarged sectional elevation of another modification of my invention
secured to the rim or felly of a pneumatic tyre of wheels of cycles and cther road
vehicles.
Fig. 6 is an enlarged sectional elevation of my invention wherein a tight joint is
formed at both ends by means of india-rubber, elastic, or other medium, and
Fig. 7 is a part sectional elevation of my invention with means for making tight
joint on upper end of tube.
In all the figures the same letters are employed to indicate corresponding parts.
A is the rim or felly of a pneumatic tyre of wheels for bicycles, tricycles, and
other road vehicles of such dimensions as to conform in cross-section to the contour
of a round or oval tyre; B is an india-rubber, elastic, or other tube to contain air,
gas, or liquid under pressure, which, although not shown in the drawings, is
enclosed in a non-expansive jacket of canvas secured in any convenient manner to
the rim or felly A; C is a tube secured to the rim or felly A, and the india-
rubber, elastic, or other tube B by the flange or head D, washers E and F, and the
nut G.
The tube C can be of brass or other metal provided with the flange or
head D. If desired the tube C can be made without the flange or head D, in
which case it is secured in the pap H on the india-rubber, elastic, or other tube B
as shown in Fig. 2, being secured thereto by being wrapped with cord or wire.
The outer portion of the tube C in the pap H is provided with the grooves I to
facilitate wrapping with cord or wire and ensure of a tight joint being effected.

page_text: When the tube C is attached to the rim or felly A the washer E may be dispensed
with as shown in Fig. 5. The exterior of the tube C is threaded to receive the
nuts G and O. The tube C is provided internally with the chamber or cavity J
in which is disposed the conical or other stem or valve K. The latter is provided
with the upper screwed end L and the collar or valve M.
The conical or other stem or valve K is provided with the passage N formed
through its centre and side or sides, through which the inflating medium is forced
by means of a force pump or like device attached to the screwed end L. Over the
conical or other stem or valve K is stretched the india-rubber, elastic, or other
medium T, and it is then inserted in the chamber or cavity J in the tube C, being
secured therein by the nut O screwed on the outside of the threaded part of the
tube C, or by the nut O formed on the stem K as shown in Fig. 7, or by the internal
screw as in Fig. 3. The joint between the upper end of the tube C and the collar
or valve M can be made tight by means of the washer P, which may be of leather,
india-rubber, lead, soft metal, or other equivalents. The washer P can be di-pensed
with if desired; the joint being made pressure tight by grinding together the
underside of the collar or valve M and its seat on the upper end of the tube C as
shown in Figs. 1 and 5, or the joint can be made tight by the conical part of the
india-rubber, elastic, or other medium T fitting in or on the upper end of the
tube C as shown in Figs. 1 and 6. The stem K can be made parallel of varying
diameters, the upper part fitting in the chamber or cavity J. and the lower part is
provided with the india-rubber, elastic, or other medium T as shown in Fig. 2.
The part under the collar or valve M can be threaded and screwed into the tube C
as in Fig. 3.
The india-rubber, elastic, or other medium T can be secured in position on the
conical or other stem K in the manner shown in Figs. 1, 2, 3, 5, and 7, or as shown in
Fig. 6, in the latter case it extends below or beyond the end of the stem K, at which
point it is tied when stretched-by means of thread W or other equivalents, so that
when at rest or free from internal pressure the passage through the same is closed.
If constructed as in Fig. 4 the bottom end of the india-rubber, elastic, or other
medium T is provided with the plug V of metal, ebonite, or other suitable material
secured therein in any convenient manner so as to emit pressure forced through the
passage N by a force pump or like device. The upper or screwed end L is
threaded to receive the attachment from a force pump or like device.
On this part
is screwed the cap Q containing the joint ring R to form a tight joint and close the
upper end of the passage N when not connected with the force pump or like device
employed for inflating the tube B, thereby providing additional security against
leakage. The cap Q is fitted with the grooved projection S to receive a chain or
its equivalent, to attach the same to the tyre and prevent its being lost when not in
position.
This invention is applied and operates in the following manner :- A hole is made
through the rim or felly A and the tube B, through which the tube C is passed from
the inside before the ends of the inflating tube B are joined together or otherwise.
The tube C is secured in position by the washers E and F and the nut G. The
conical or other stem K with the india-rubber, elastic, or other medium T is then
placed in position in the tube C, and secured therein by the nut O. After being
fixed in position, as described above, the air, gas, or liquid forming the inflating
medium is forced in by means of a force pump or like device, which is attached to
the screwed end L. of the stem or valve K. As the inflating medium is forced in
it expands and raises the covering T on the stem or valve K and forces its way
under the same into the tyre, but upon a reduction of the pressure from the force
pump or like device the covering T instantly closes the inlet and prevents its return
or escape, thus making an efficient non-return valve. In case it is desired or
necessary to allow pressure to escape from the tyre, the stem or valve K may be
loosened by unscrewing the nut 0, or the conical or other stem or valve K may be
removed from the tube C by taking off this nut.

page_text: 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. The general arrangements, constructions, and combinations of parts composing
the improved non-return valve for pneumatic tyres of cycles and other road
vehicles, as her einbefore described and as illustrated in the annexed drawings.
2. In combination with the tube Cattached to the run or felly or to the
inflating tube of pneumatic tyres of wheels of cycles and other road vehicles the
use and employment of the conical or other stem or valve K and its adjuncts, with
means for removing the same therefrom without opening the tyre, substantially as
described and as shown on the drawings.
3. In combination with inflated or pneumatic tyres of wheels for bicycles, tricycles,
and other road vehicles, the use and construction of apparatus consisting of the
tube C, the conical or other stem or valve K with the passage N, an elastic
covering T, and nut O for securing the conical or other stem or valve K with its
elastic covering in the tube C and maintaining a tight joint between the two, also
for allowing of the conical or other stem or valve K being removed outside the tyre
without displacing the tube C or opening the tyre, substantially as described and as
illustrated in the drawings.
Dated the 10th September 1891.
EDMUND CHADWICK,
Agent.