Improvements in" Wheels for Velocipedes and other Vehicles.
Year: 1889

page_text: Date of Application, 7th -Oct., .1889
Complete Specification Left, 7th June, 1890 Accepted, 12th July, 1890
"
PROVISIONAL SPECIFICATION.
Improvements in" Wheels for Velocipedes and other Vehicles.
I THOMAS WILSON ROBERTSON of No. 8 Lemon Street, Dublin Ireland do hereby
leclare the nature of this invention to be as follows:-
My invention relates to improvements in tyres-for the wheels of velocipedes and
other vehicles, for the purpose of attaining noiseless running, and greater” elasticity
than obtains with other tyres asthitherto used.
In carrying out my invention. Lense a hollów tyre of tinidiarubber, with preferably
two channels or internal tubes formed therein, and shaped externally to suit the
grooved metal or wooden felloe" of the wheel, to which it is attached in the usual
manner
Dated this Sth day of Osicher isso.
FREDK. WALKER & HYDE,
4, Little Moorfields, London, E.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Wheels for Velocipedes and other Vehicles.
1, THOMAS WILSON ROBERTSON of 8 Lenion Street, Dublin, Ireland 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 improvements in tyres for the wheels of velocipedes and
other vehicles, for the purpose of attaining noiseless running and greater elasticity
than obtains with other tyres as hitherto made and used.
In order that my invention may be the better understood I have appended the
accompanying sheet of drawings in which Fig. 1 is an elevation of a portion of a
velocipede wheel provided with tyres according to my invention, and Fig. 2 is a cross
section thereof upon the line A B. Fig. 3 shews a slight modification in the con-
struction of the flexible tyre. Similar letters of reference are used to indicate
corresponding parts throughout the drawings.
In carrying my invention into effect I form a double tubular elastic tyre A of a
single strip of india rubber or a similar resilient material, folded or shaped in the
manner shewn by Fig. 3, so that two distinct annular tubes a a¹ are formed, and a
third annular space a is also formed by the method adopted whereby the edges of
the resilient strip are turned outward. I form the metallic or wooden tyre B to
correspond to the external conformation of the resilient tyre above referred to, which
is affixed by means of any cement or adhesive solvent that is suitable for the
purpose.
The cross section shown by Fig: 2 presents a fourth annular space all which may
or may not be utilized as part of the adhesive surface of the resilient tyre, and the
metallic or wooden tyre shaped so as to fit it. A modification of the device hereinbefore
described is shewn by the cross section Fig. 3, but the principle of my invention is
not departed from, since the modification consists only in the disposition of the ends,
so that two annular tubes or spaces only are provided.
According to my invention I am enabled to produce a perfectly noiseless.and elastic
external tyre, which also fits the metallic or woolen tyre of the wheel of the vehicie
to which it is adapted, and the elasticity and resilience thereof is not alone due to the
enclosed air, but mainly to the structural form and arrangement of the strip of rubber
or the like, and the particular circumferential formation of the wheel proper renders

page_text: it nearly impossible for the external tyre to become stripped when running since the
adhesion is practically perfect.
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.
In an improved wheel for velocipedes and other vehicles, the combination of a
resilient and elastic tyre with two or more annular air spaces, with a metallic or
wooden tyre of a wheel adapted to conform to the same substantially as shown by the
appended drawings and herein described in full.
Dated this 6th day of June 1890.
FREDK. WALKER & HYDE,
4, Moorfields, Fore Street, London, E.C., Agents for Applicant.