An Improvement in Certain Tyres,
Year: 1897

page_text: Date of Application, 26th Oct., 1897
Complete Specification Left, 26th Aug., 1898-Accepted, 1st Oct., 1898
RICHARD RIDPATH BLANDY, of 9, Bow Street, in the County of London, TUTU
Importer, do hereby declare the nature of this invention to be as follows:-
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I put into the interior of a pneumatic tyre finely sub-divided cork or other
material having the same characteristics. The quantity of the substance to.be
placed in each tyre will depend on the result desired. Amongst other advantages
sufficient of the substance can be put in to make the tyre practically a solid tyre
so far as practical independence of punctures is concerned or by putting in a lesser
quantity of the substance the inconvenience of punctures is almost entirely done
away with by enabling the tyre still to be used or if a still less quantity be put in,
the tyre can still be used for the purpose of running to a place where it can be
repaired..
9.57
11.
10%
Dated the 22nd October 1897.
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RICHARD RIDPATH BLANDY.
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COMPLETE SPECIFICATION.”
An Improvement in Certain Tyres,
11+ 23
I, RICHARD RIDPATH BLANDY, of 9, Bow Street, in-the:County. of: London, Fruit
Importer, 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:-
In the use of pneumatic, or air inflated, tyres for bicycles and other vehicles, as
is well known, there is constant liability to puncture or, injure, the tyre, or its
parts, so that the air pressure is destroyed, or so reduced that the cover or air,
tube becomes exposed to a cutting or grinding action between the edges of the
rim.of the wheel and the road and injury results.
The object of my invention is to provide pneumatic tyres with a device which
when the pneumatic tube is fully and properly inflated may lie dormant within said
tube and around the rim, but when from puncture, bursting, failure of a valve or
other cause the air pressure is lost, or impaired the tyre tube or tube and cover
may be sustained clear of cutting' or injurious action between rim and road or
Otherwise

page_text: d', is the fabric cover for said cork.
The cork dust, or like form of cork in pieces may be stuffed into a fabric cover
of circular cross section and this core may be drawn into the air tube at one of its
open ends and then the air tube is closed and properly placed around the rim within
the cover.
This fabric cover serves to confine the enclosed cork material and to restrict the
amount of displacement of the cork material within certain limits or defined
bounds. Referring to Fig. 1. the cork core in its cover may be placed in position
and, as there seen, it may retain its circular cross section as long as the fully
inflated tyre bears the load, but as soon as the air escapes the pressure of the load
brings the cork.cushion in its confining cover to more or less, the flattened curved
form indicated in Fig. 2, and with the cover and tube resting on this soft bed the
machine may be ridden home without harm to the tyre, as cutting is prevented.
In the drawing, I have chosen for illustration, a type of construction of
pneumatic tyre known as the "Clincher," but the invention is equally applicable
to other forms of pneumatic tyres.
The relative sizes of the fabric cover cork filled cores and air tubes may be
varied, but I have found that a core of the construction stated in a pneumatic
tube of the relatively larger diameter shown in the drawing gives a satisfactory
result.
The method of applying the fabric covered cork core within the tyre will, as will
be readily understood, vary according to whether the tyre is a "single tube tyre "
or of other construction of pneumatic tyre.
I am aware that it has been proposed to introduce within a pneumatic tyre
annular forms of solid india rubber solid cork blocks strung on annular wires and
separate tubes enclosing cushions of air as well as to stuff the air tube of pneumatic
tyre with hair or other materials, but apart from the great expense of such
constructions the results are very unsatisfactory.
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 use of a core, or stuffing, of cork dust, or reduced cork, within a confining
cover of canvas, unbleached calico, or other suitable fabric, placed within the air
tube, or the equivalent therefor, of a pneumatic tyre and around the trough of the
rim, so that when the said air tube is properly distended the covered cork bed
does not interfere with the pneumatic action but when the air tube or tyre becomes

page_text: collapsed or by reason of sudden jolt or the like it beds itself on the contained
fabric-covered reduced-cork cushion or core and is protected thereby from the
cutting action of the edges of the rim or other portion of the wheel liable to injure
the tyre, as set forth.