Improvements in Pneumatic Tyres for Velocipedes and other Wheeled Vehicles.
Year: 1891

page_text: Date of Application, 22nd Apr., 1891
Complete Specification Left, 21st. Jan., 1892-Accepted, 27th Feb., 1892
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Tyres for Velocipedes and other
Wheeled Vehicles.
I JOHN CARROLL of 53 Leeson Street in the City of Belfast and County of
Antrim iu Ireland Flax Dresser do hereby declare the nature of this invention to
be as follows:-
My invention relates to the pneumatic tyres applied to the wheels of velocipedes
or cycles and other wheeled road vehicles.
It consists in the use of what I may call a compound tyre or hoop of india rubber
or india rubber and canvas or other similar elastic material surrounding the rim of
a wheel in the ordinary way, which tyre or hoop is composed of a hollow tube
almost enclosed within the rim (which is of a horse shoe shape in section) and having
the outer edge or portion flattened or depressed inwards and of a solid cylindrical
hoop placed round the outside of the hollow tube so as to prevent the contact of
the tube with the road or ground. The hollow tube is held within the rim of the
wheel by straps or bands passing through slots in the side of the rim and fastened
on the outside. It is inflated with air or gas in the usual way.
Dated this 20th day of April 1891.
HYNDMAN & DICKSON,
6, Chichester Street, Belfast, Agents for Applicant.
COMPLETE SPECIFICATION.
Improvements in Pneumatic Tyres for Velocipedes and other
Wheeled Vehicles.
I JOHN CARROLL of 53 Leeson Street in the City of Belfast and County of
Antrim in Ireland Flax Dresser 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 the pneumatic tyres applied to the wheels of velocipedes
or cycles and other wheeled road vehicles."
It consists in the use of what I may call a compound tyre or hoop of india rubber
or of india rubber and canvas or other similar elastic material surrounding the rim
of a wheel in the ordinary way.
This compound tyre or hoop is composed of a hollow tube almost enclosed
within and by the rim, and having the outer edge, face or portion flattened or
depressed inwards, and of a solid cylindrical hoop placed round the outside or outer
edge, face or portion of the hollow tube so as to prevent the contact of the tube
with the road or ground and protect it against perforation or other injury which
would cause it to collapse.
The rim of the wheel is of a horse shoe shape in cross section and its edges grip
the solid cylindrical hoop which I prefer to form with flanges or shoulders to lie
within the edges of such rim and thus completely to cover and close in the hollow
tube. The flanges or shoulders may however be dispensed with and the solid
cylindrical hoop may lie in the outer edge face or portion of the hollow tube
depressed inwards to receive it.
The solid cylindrical hoop may be fastened or attached to the hollow tube by
cement or other adhesive preparation.
And I provide a few straps or bands attached at intervals to the hollow tube
within the rim passing through slots in the side of the rim & fastened outside it
TD 27

page_text: which thereby hold the hollow tube in position and prevent what is commonly
known as creeping.
One mode of employing such stays is to attach them by cement or other adhesive
preparation to the hollow tube, with folds or loops which are passed through the
slots in the rim and held in position by rods or bars within them crossing the
slots outside the rim and tightened over the rods or bars by the stretching of
the hollow tube when inflated. The hollow tube is furnished with valves and
inflated with air or gas in the usual way.
And in order that my said invention may be more fully understood I shall now
proceed to refer to the drawing on the sheet hereunto annexed showing a cross
section of the rim and the compound tyre or hoop with a strap or band attached to
the hollow tube passing through slots in the rim and fastened outside it by rods or
bars.
a is the hollow tube having its outer edge face or portion flattened. b is
the solid cylindrical hoop with flanges or shoulders gripped by the edges of a the
horse shoe shaped rim and completely covering and closing in the hollow tube a so
as to protect it against injury. d is the strap or band attached to the hollow tube a
passing through the slots ee in the rim & fastened outside it by rods or bars
crossing the slots e e.
Having now particularly described and ascertained the nature of my said inven-
tion & in what manner the same is to be performed I declare that what I
claim is
1. The use in velocipedes and other wheeled vehicles of a compound tyre
consisting of an inflated tube and solid hoop constructed and employed substantially
in the manner & for the purposes hereinbefore described and shown by the drawing
hereunto annexed.
2. The use in velocipedes, and other wheeled vehicles of a rim formed and employed
substantially in the manner and for the purposes hereinbefore described and shown
by the drawing hereunto annexed.
3. The use in velocipedes & other wheeled vehicles of staying straps or bands
constructed attached and employed substantially in the manner and for the purposes
hereinbefore described and shewn by the drawing hereunto annexed and
4. The combination and arrangement of parts constituting my improved
compound tyre or hoop for velocipedes and other wheeled vehicles, constructed
stayed and employed substantially in the manner and for the purposes hereinbefore
described and illustrated by the drawing hereunto annexed.
Dated this 20th day of January 1892.
HYNDMAN & DICKSON,
6, Chichester Street, Belfast, Agents for Applicant.
HYNDMAN & DICKSON,
6, Chichester Street, Belfast, Agents for Applicant.