Improvements in and relating to Wheels for Velocipedes and other Road Vehicles.
Year: 1891

page_text: Date of Application, 16th Apr., 1891
Complete Specification Left, 16th Jan., 1892-Accepted, 20th Feb., 1892
PROVISIONAL SPECIFICATION.
Improvements in and relating to Wheels for Velocipedes and other
Road Vehicles.
1. JOHN DRING of 57 Chancery Lane in the Parish of St. Andrews. Holborn,
in the City and County of London, Secretary to Company do hereby declare the
nature of this invention to be as follows:-
My invention relates to an improved construction of pneumatic, or air-inflated,
tyre and of an improved method of attaching it to the rim of the wheel, the object
being to facilitate the repair of the air tube and outer cover when they are
punctured or otherwise damaged.
To this end my invention consists of a band or strip of rubber thicker at the
centre than at the edges and preferably moulded so that it naturally assumes the
shape of a tube, the abutting edges of the band or strip are provided with an
internal bead, or its equivalent, for an object that will presently he made clear.
The inner surface of the band or strip is lined with canvas to strengthen it
and equalize the pressure of the air tube on it. The air tube may be of the usual
kind used with this type of tyre.
To attach the rubber cover to the rim, I attach to the outer concave face of the
rim a second rim-preferably made in sectional pieces-and adapted to be drawn
down to the inain rim of the wheel by suitable bolts or screws. This sectional rim
is for the purpose of holding down the rubber cover, and its shape in cross section
is such that it embraces the beads, or their equivalents, on the edges of the band or
strip forming the rubber cover, and so both defines the position of the said cover,
on the rim, and securely fixes it thereto.
It will be seen that when it is desired to remove the outer rubber cover to
repair the same or to get at the air tube for repair or otherwise, the rubber cover
can be easily and readily detached from the rim of the wheel by slackening the
bolts or screws holding down the outer sectional rim.
Dated this 16th 1:1 1001
ROBT. ED. PHILLIPS, M.I.M.E., ETC.,
Consulting Engineer and Patent Agent,
70-72. Chancery Lane. London. W.C.. Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to Wheels for Velocipedes and other
Road Vehicles.
I, JOHN DRING of 57 Chancery Lane in the Parish of St. Andrews, Holborn,
in the City and County of London, Secretary to Company, 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 invention relates to pneumatic or air-inflated tyres and it consists of an
improved method of attaching the outer cover or sheath to the rim of the wheel,
the object being to facilitate the repair of the air tube and outer cover when they
are punctured or otherwise damaged.
I attain this end by constructing the outer cover or sheath in the form of an
endless band or strip of rubber or analogous material preferably thicker at the
centre forming the tread, than at the edges and also preferably moulded so that it
naturally assumes an approximately tubular shape. On each edge of the band or
strip is formed an interual bead, or its equivalent, and the inner surface of the

page_text: band or strip is lined with canvas or similar material to strengthen it and equalize
the pressure of the air tube within it. The air tube is of the usual kind used with
this kind of tyre. To attach the outer cover or sheath to the rim, I use a second
rim preferably made in sectional pieces and adapted to be clamped to the main rim
of the wheel by one or more suitable bolts or screws. This second rim clamps the
outer cover or sheath to the rim of the wheel, its shape in cross section being such
that it embraces the beads, or their equivalents on the edges of the outer cover or
sheath and so both defines the position of the said cover or sheath on the rim and
securely fixes it thereto. As a modification the face of the rim of the wheel may
he shaped to adapt it to receive the beads or their equivalents on the outer sheath
or cover, and the second rim be made plain.
It will be seen that when it is desired to remove the outer cover to repair the
same or to get at the air tube for repair, the said cover can be easily and readily
detached from the rim of the wheel by slackening the second rim until the edge or
edges of the outer cover or sheath are free.
In order that my invention may be fully understood I append a drawing hereto
illustrating some methods of carrying it into practical effect.
Referring to Figures 1 and 2 of the said drawing which illustrate one form my
invention may assume, A designates the outer cover or sheath lined with canvas
or analogous material and preferably moulded in an approximately circular ferm.
a, a, designate the beads or their equivalents formed on the edges of the cover or
sheath. B designates the air tube or chamber provided with any suitable inflation
valve. C. designates the main rim of the wheel which may be either hollow as
shown by Figure 1, or solid as shown by Figure 2. D designates the second rim
provided with projections d, d, to engage with the beads a, a.
may be either formed in segments or in one piece. If the former construction is
followed each segment is clamped to the main rim C. by one or more radial bolts E,
but if the latter construction is followed the second rim is preferably clamped
to the main rim C. by a bolt E. adapted to draw the two ends of the said rim
together.
This second rim
Figures 3 and 4 are views in transverse section showing other forms my invention
may assume and which are self-explanatory.
Figures 5 and 6 are views in transverse section showing further modifications of
my invention. Referring to Figure 5 the beads a, a, are made to project on each
side of the edge of the cover, and both the second rim D and the main rim C. are
shaped to embrace the said beads and so ensure the firm retention and the correct
position of the cover on the rim of the wheel. Referring to Figure 6 the beads a, a,
may if desired be formed to fit entirely in internal recesses in the rim C. the
rini D in this case being plain.
Figures 7 and 8 are broken views in transverse section showing other forms my
invention may assume. In these constructions the second rim D is placed inside
the main rim of the wheel to which it is clamped by radial bolts E. suitable
clearance holes being provided in the second rim for the spokes to pass through.
The outer cover A is of the same construction as hereinbefore described, but it is
clamped between the second rim D and the convex face of the main rim C. as
shown. The air tube (' is shown throughout the views of the accompanying
drawing deflated for the purpose of distinctness.
It will be seen that when it is desired to remove or get at the air tube the inner
rim D. is slackened to allow one or both edges of the cover A. to be detached from
the rim.
I wish it to a particularly understood that I do not limit myself to the precise
details of construction hereinbefore described and illustrated by the accompanying
drawing, but that I hold myself at liberty to make such changes and alterations as
may fairly fall within the spirit and scope of my invention.
I am aware that it is not broadly new to fix tyres to the rims of wheels by
internal strips or segments and I do not therefore claim such broadly as my
invention, but

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manuer the same is to be performed declare that what I
claim is :-
1. The improved method of attaching the outer cover or sheath of a pneumatic
tyre to the rim of a wheel, as hereinbefore described and illustrated by the accom-
panying drawing.
2. In a wheel for a velocipede, the combination with the rim of a wheel, of an
outer cover or sheath for a pneumatic tyre approximately circular in transverse
section and having bends along its edges, of a second rim formed in one or
more sections and adapted to be clamped to the main rim of the wheel by one or
more bolts to fix the edges of the said cover or sheath to the said rim, as set
forth.
4. In a pneumatic tyre the cover or sheath of which is fixed to the rim of
the wheel by second rim cr band capable of being tightened on the main rim of
the wheel, forming beads or their equivalents on the edges of the said cover
adapted to engage with one or both of the said rims so that the exact position of
the said cover or sheath, and therefore the exact size of the tyre, may be ensured,
ns set forth.
3. In a wheel for a velocipede, the combination of the outer cover or sheath A
having beads a, a, or their equivalents on its edges, of the air tube B, of the main
rim of the wheel C, of the second rim D. adapted to be clamped to the rim C.
by means of one or more bolts E. and shaped in cross section so that it embraces
the beads a, a, on the edges of the cover A, as and for the purpose set forth.
Dated this 16th day of January 1892.
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.