Improvements in and relating to Pneumatic Cycle and like Tyres.
Year: 1893

page_text: Date of Application, 8th Feb., 1893
Complete Specification Left, 8th Dec., 1893-Accepted, 13th Jan., 1894
PROVISIONAL SPECIFICATION.
Improvements in and relating to Pneumatic Cycle and like Tyres.
We, JOHN MARSHALL STARLEY and WILLIAM STARLEY, both of St. John's
Works, Coventry, in the County of Warwick, Cycle Manufacturers, do hereby
declare the nature of this invention to be as follows :—
This invention relates to the manner in which we construct and arrange the
felloes or rims of wheels for receiving pneumatic or air inflated tyres, and also
to the manner in which we construct such tyres and their parts or accessories
for use upon such improved form of wheels.
In carrying our invention into effect we construct the rim or felloe of our
improved wheel for the reception of pneumatic tyres, of a width preferably equal
to the diameter or outside extreme width of the tyre. The outer portions of
the rim or felloe we make each side in the form of a hollow bead or continuous
ear, for the purpose of providing a double clinch or hold fast for the tyre material
to enter under. The bed of the rim or felloe we preferably hollow or curve,
and we also curve the outer portions of this bed leading to the clinch or holdfast
channel on each side of the rim.
We construct our improved form of tyre rim out of steel or any suitable metal
and we produce it either from sheet or strip metal or from a tube to suit the
particular weight that is to be carried, and we modify the thickness or exact
section of rim as may be required to suit any particular requirement.
We construct the tyre in two portions, one being the outer sheath or cover,
and the other the inner air tube. In connection with these two portions of the
tyre we also employ a pad or bedding strip or series of strips of felt or other
soft material which we place between the metal rim and the inner tube.
The outer sheath or cover we thicken up at its extreme surface to form a good
wearing tread; the ends of the envelope cover or sheath we form in a peculiar
manner to fit or engage with the beads or clinching portions of the rim. The
outer envelope or sheath is expanded so as to rigidly embrace the two clinching
portions of the rim; when the inner air tube is inflated the shape then taken
or formed by the tube being approximately circular with its lower portion of a
configuration caused by following the rim and its beads. The cover we preferably
line with, or incorporate with it, a layer of canvas in the usual manner.
We
cement or otherwise fix the bedding felt or other pads or strips to the rim of
the wheel, and we sometimes arrange this pad or series of pads with projecting
pieces or with thickened portions forming projections to prevent the creeping of
the tube around the rim. Similarly we sometimes prevent the slipping or creeping
of the outer cover upon the rim by forming projections or groove within and
upon the beads into which the tyre cover will be pressed when inflated.
The air tube we employ is of the usual ordinary type and is fitted with any
well known form of inflator valve.

page_text: Improvements in and relating to Pneumatic Cycle and like Tyres.
We, JOHN MARSHALL STARLEY and WILLIAM STARLEY both of St. John's
Works, Coventry in the County of Warwick, Cycle Manufacturers, 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:-
This invention will be best understood by reference to the accompanying
drawing which represents a cross section through rim and tyre. A represents
an ordinary rubber air tube, and B a cover of rubber, rubber and canvas, or the
like. C is the rim which may be of the solid or hollow type and is provided
with hollow beads or gutters C¹ into which suitably shaped beads or enlarge--
ments B' formed upon the edges of the cover B fit, the cover being also extended
at B² so as to fit upon the edges of the rim. By this means the sides of the
tyre rest upon the two curved shoulders B' so as to prevent side slipping the
hook formed by the portions B₁ and B' giving a double grip so that when
the tyre leans over to one side it pulls on the bottom of the hook upon the
opposite side and bears strongly upon the shoulder B' upon the side to which it
leans. Also in case of deflation the tyre would rest upon the shoulders B³ and
might be ridden without cutting it through.
We place one or more pads or bedding strips D of felt or other soft material
between the metal of the rim and the air tube and may form these and the rim
with alternate projections and depressions, or ridges and furrows, herein termed
corrugations, whereby the creeping of the air tube and the cover may be pre-
vented and the rim strengthened. These projections and depressions may be
arranged in any convenient manner and may be large or small but conveniently
we make them all of the same width. The pads may either have independent
corrugations formed upon them or the corrugations may be formed upon the
wheel rim so as to impart their shape to the pad which is preferably cemented
or solutioned to the rim. Generally it is sufficient to corrugate the beads or
edges of the rim, but these may be extended entirely across the rim if desired
and where the pads were not specially corrugated it would be desirable or
necessary to corrugate the rim entirely across.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, we declare that what
we claim is :-
:-
1. The combination and arrangement of parts constituting the complete wheel
rim and tyre substantially as described and illustrated in the accompanying
drawing.
2. The double grip attachment B' B' substantially as described and illustrated
in the accompanying drawing.
3. A corrugated pad such as D between the rim and air tube of a pneumatic-
tyred wheel substantially as described.
4. A corrugated wheel rim substantially as described.
Dated this 15th day of November 1893.
W. P. THOMPSON & BOULT,
Agents for the Applicants.