Improvements relating to Pneumatic and like Tyres, the Rims of Wheels therefor, and to their Attachment one to the other.
Year: 1896

page_text: Date of Application, 1st May, 1896
Complete Specification Left. 22nd July, 1896-Accepted, 12th Sept., 1898
PROVISIONAL SPECIFICATION.
Improvements relating to Pneumatic and like Tyres, the Rims of
Wheels therefor, and to their Attachment one to the other.
I, JOSEPH WILFRED BOWLEY, of 56 St. John's Villas, Upper Holloway, in
the County of London, Gentleman, do hereby declare the nature of this invention
to be as follows:-
My present invention relates to that class of pneumatic tyres which depend for
their attachment upon the employment of a cover having suitably thickened edges,
a wheel rim having inturned edges and one or more internal abutments, and a
separate elastic or other suitable ring or cushioning buffer located adjacently to
each of the said thickened edges of the cover, the arrangement being such that
although the tyre is securely held to the wheel rim even when deflated, the edges
of the cover, upon inflation of the tyre, are retained with increasing firmness in
their wedged-in position.
According to my invention each edge of the tyre corer is provided with a suit-
able wedge-shaped or other extensible thickening, the wheel rim bas inturned edges
and ie provided within its channel with a centrally located or other abutment
which in cross-section is approximately T-shaped or such that the thickened edges
of the tyre cover may fit therein. It is essential to my invention that the wheel
rim at its inturned edges shall be of larger diameter than that of the cross-head
of the said abutment. The thickened edges of the tyre cover are sprung over
the inturned edges of the wheel rim into their position under the cross-bead of
the abutment. A separate elastic or other suitable ring or cushioning buffer is
then placed between each thickened edge of the tyre cover and the side wall and
inturned edge of the wheel rim. Upon inflation the said rings will be forced or
retained in position and will operate to the more firmly wedge-in the thickened
edges of the tyre cover. The effect of my arrangement is that when once in
position the tyre cover will not leave the wheel rim no matter at what direction
force may be exerted to separate the one from the other and that notwithstanding
the fact that both the edges of the tyre cover and the said separate rings are
extensible; but after deflation, upon removing the whole or any part of either of
the said rings the corresponding parts of the thickened edges of the cover become
detached whereby any portion of the inflatable tube may be reached.
Dated this 1st day of May 1896.
A. F. SPOONER,
124 Chancery Laue, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements relating to Pneumatic and like Tyres, the Rims of
Wheels therefor, and to their Attachment one to the other.
I, JOSEPH WILFRED BOWLEY, of 56 St. John's Villas, Upper Holloway, in
the County of London, Gentleman, 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 :-
My present invention relates to that class of pneumatic tyres which depend

page_text: for their attachment upon the employment of a cover having suitably thickened
but sufficiently elastic edges, a wheel rim having inturned edges and one or more
internal abutments, and a separate elastic ring located adjacently to each of the
said thickened edges of the cover, the arrangement being such that although the
tyre is securely held to the whitel rim even when deflated, the edges of the cover,
upon inflation of the tyre, are retained with increasing firmness in their wedged-in
position.
In the accompanying drawing which illustrate my invention,
Figure 1 shows in transverse section a tyre attached to the wheel rim and
inflated:
Figure 2 shows in transverse section the wheel rim.
In the drawing A is the wheel rim, B is the inflatable tube which may be made
of pure rubber or rubber combined with canvas or in any other suitable way, and
C is the outer cover which may be composed of rubber or rubber backed with
canvas or made in any other convenient manner.
According to my invention, and describing it with reference to the drawing, each
edge of the tyre cover is formed or provided with an extensible core D, the wheel
rim has inturned edges G and is provided within its channel with a centrally
located or other abutment E which in cross-section is preferably T-shaped or such
that the cores D may fit therein. This abutment E may either fit loosely upon,
or be secured to, or be formed in one with, the rim A. It is essential to the
operation of my invention that the wheel rim at its inturned edges G shall be of
larger diameter than that of the cross-heade of the said abutment. A separate
elastic ring F is located between each core D and the side wall-and inturned edge G
of the wheel rim.
In attaching a tyre to a wheel rim in accordance with my invention the cover
with the deflated or partially inflated tube B within it is passed on the wheel rim
and the cores D placed into position. The two elastic rings F are then sprung
over the edges of the rim aud likewise placed into their position as shown in the
drawing.
Upon inflating the tyre, the said rings F, actuated by the expanding base of
the inflated tyre, are caused or permitted to roll or sink down the side walls of
the wheel rim, thus driving the cores D of the tyre cover therefrom into their
position against the abutment E where the greater the pressure of inflation the
more firmly are they retained. The further effert of my arrangement is that when
once in position the tyre will not leave the wheel rim no matter in what direction
force may be exerted tending to separate the one from the other and that not-
withstanding the fact that the cores D and rings F are both extensible. But,
after deflation, upon removing the whole or any part of either of the said rings
the corresponding parts of the edges of the tyre become detached whereby any
portion of the inflatable tube may be reached.
Obviously my invention is equally well adapted to road yehicles of the heavier
classes as to velocipedes; the wheel rim may be considerably modified in section;
and the attachment is equally well applicable to single tube tyres in which case
such single tube tyres are provided with side wings or flaps terminating in cores or
thickened edges D as described.
I am aware that it has before been proposed to provide a tyre or tyre cover
with thickened edges and to depend for attachment upon inflation driving such
edges apart on to the side walls of the wheel rim; also to clamp the thickened or
other edges of a tyre or tyre cover to a wheel rim by metallic clamping bands;
and likewise to pass-the thickened edges of a tyre or tyre cover into channels
with restricted openings in the wheel rim and afterwards to place within such
channels separate elastic and other locking rings depending for attachment upon
the arrangement being such that the restricted opening of the channel whilst being
of a size to permit of the entrance of the thickened edges and 'the locking rings
therethrough separately, would not allow of the two passing thereout collectively.
I do not claim any of these as my invention, but
F"

page_text: 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 parts for detachably securing a pneumatio
or like tyre to a wheel rim comprising a tyre or tyre cover with cores D at its
edges, a wheel rim with a radially projecting abutment E and inturned edge
flanges G extending circumferentially beyond the radius of the said abutment E,
and separate elastic rings F so operating that, upon the tyre being inflated,
the said elastic rings, actuated by the expanding base of the inflated tyre, are
caused or permitted to roll or sink down the side walls of the wheel rim and drive
the cores D therefrom into their position against the abutment E substantially as
set forth.
1000
A. F. SPOONER,
124 Chancery Lane, W.C., Agent for the Applicant.