Improvements in Pneumatic Tyres.
Year: 1894

page_text: Date of Application, 10th Feb., 1894
Complete Specification Left, 12th Nov., 1894-Accepted, 15th Dec., 1894
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Tyres.
I, ARTHUR MALTBY of 8 Hanover Place, Upper Baker Street, in the County of
Middlesex, Naval and Military Tailor, do hereby declare the nature of this
invention to be as follows:-
These improvements refer to pneumatic tyres with a flat tread for cycle wheels
and the like and have for their object to obtain great speed combined with
simplicity of construction and resistance against puncture.
The air tube and
chamber is armoured on or near its outer periphery with an endless flat hoop of
tbin finely tempered steel, or celluloid, whalebone, hickory wood, cane, ebonite,
diagonally woven wire or other hard flexible material suitable for the purpose, or
compounded of layers of canvas strips glued together to make up a suitable thickness
and strength, the layers by preference gradually decreasing in width to the outside.
This hoop is fixed on the outside of the air tube or embedded in the substance
thereof either while in the mould or rolled and joined by hand. If the band is of
steel and embedded it may have been previously lapped round with canvas.
diameter of the hoop and the inner diameter of the air tube are such that the tube
when inflated contracts tightly upon the rim of the wheel. The air tube may
suitably be made of rubber with inner canvas lining and with or without fine
diagonally woven wire netting embedded or glued to the outside when necessary to.
protect the air tube against puncture. The outside of the tyre may be bare or it
may be covered with thin rubber glued on or thin rubber with inner fine wire
netting. The hoop may be provided with holes at intervals. Instead of forming
the flat tread by means of a hoop I may form the air tube itself with a flat tread.
Dated this 10th day of February 1894.
The
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Pneumatic Tyres.
I, ARTHUR MALTBY of 8 Hanover Place Upper Baker Street in the County of
Middlesex Naval and Military Tailor, 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:-
These improvements refer to pneumatic tyres with a flat tread or nearly so for
cycle wheels and the like as described in the Specifications of my Patents Nos. 16885
and 19014 of 1893 and have for their object to obtain great speed. combined with
simplicity of construction and resistance against puncture.
For this purpose the air tube or chamber is armoured or protected by means of
an endless flat hoop of woven wire of copper, brass or other alloy of suitable
elasticity and stiffness or an endless hoop compounded of layers of canvas strips.
glued together to make up a suitable thickness and strength, the layers by
preference gradually decreasing in width to the outside. This hoop is contained or
fixed in the cover on the outside of the air tube or embedded in the substance thereof
either while in the mould or rolled and joined by hand. The diameter of the hoop
is such that the air tube when inflated becomes flattened on the outside and the
inner diameter of the air tube, is slightly larger than the diameter of the wheel
[Di Q71

page_text: rim in or on which it fits so that when inflated it contracts tightly upon
the rim.
Figure 1 is a cross section through such a tyre. A is the air tube. B is a hoop of
coarse woven wire, copper, brass or other suitable alloy of suitable elasticity and
stiffness. This hoop is lapped round with canvas C and solutioned between the
rubber D and the double canvas E through the folds of which are passed the
wires F for fastening the cover detachably to the rim.
Figure 2 is a cross section of another form in which the cover is solutioned or
otherwise fixed to the inner edges of the rim. The canvas E is here shown of a
single thickness but may be double.
Figure 3 is a cross section through a hoop made of layers of canvas of gradually
reduced width. .
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is: :-
A pneumatic tyre composed of an inner inflatable air tube and a cover containing
a hoop made of woven wire or of layers of canvas solutioned together substantially
as set forth.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.