Improvements in and connected with Pneumatic Tyres for Cycles and all kinds of Road and Rail Vehicles.
Year: 1896

page_text: Date of Application, 17th Aug., 1896
Complete Specification Left, 17th June, 1897-Accepted, 14th Aug., 1897
PROVISIONAL SPECIFICATION.
Improvements in and connected with Pneumatic Tyres for Cycles
and all kinds of Road and Rail Vehicles.
HERBERT SEWELL, Coleraine, County Derry, Ireland, General
Merchant, do hereby declare the nature of this invention to be as follows:-
The object of my invention is to produce a pneumatic tyre, economical and simple
in its construction whilst preserving all the well-known advantages of the existing
different forms of pneumatic tyres, such as lightness of draught or propulsion, and
comfort to the rider or occupier.
In carrying my invention into practice, I make the tyre of a series of hollow
hemi-spherical or spheroidal sections or segments composed of rubber, leather, hide,
canvas or the like strong and flexible material or a combination of any or all of these,
or like substances.
The rim or felloe of the wheel I construct in such a manner that the said segments,
sections, or basins can be readily and rigidly attached by and at their tangential
face.
In the interior or hollow portion of the said spherical or spheroidal segments, I may
place a bladder or pouch of suitable shape, and composed of such material as rubber,
skin, gut, or in fact any suitable flexible and air impervious material, which will,
when distended or inflated by air or gas, fill said hollow and so distend and stiffen the
walls of the enclosing segments so as to afford, according to density, any desired
pneumatic bearing power.
For railway vehicles I provide a guiding flange extending from rim of wheel as on
existing wheels.
From my improvements it will be obvious that the revolution of the wheel will be
made upon a series of spherical or spheroidal arcs or points, pneumatic, which may
be so placed around rim of wheel so that the progressive revolution of wheel would be
made upon an intermittent series of points.
Dated this 15th day of Angust 1896.
BOTTOMLEY & LIDDLE,
154 St. Vincent Street, Glasgow, Applicant's Agents.
0 Improvements in and connected with Pneumatic Tyres for Cycles
and all kinds of Road and Rail Vehicles.
I, WILLIAM HERBERT SEWELL, Coleraine, County Derry, Ireland, General
Merchant, do hereby declare the nature of this invention and in what manner the

page_text: same is to be performed to be particularly described and ascertained in and by the
following statement :-
The object of my Invention is to produce a pneumatic tyre, economical and simple
in its construction whilst preserving all the well-known advantages of the existing
different forms of pneumatic tyres, such as lightness of draught or propulsion and
comfort to the rider or occupier.
In carrying my Invention into practice I make the tyre of a series of hollow
hemispherical or spheroidal sections or segments composed of rubber, leather, hide,
canvas or the like strong and flexible material or a combination of any or all of these
or like substances.
The rim or felloe of the wheel I construct in such a manner that the said
segments, sections, or basins can be readily and rigidly attached by and at their
tangential face.
In the interior or hollow portion of the said hemispherical or spheroidal segments,
I may place a bladder or pouch of suitable shape and composed of such material as
rubber, skin, gut or in fact any suitable flexible and air impervious material, which
will, when distended or inflated by air or gas, fill said hollow and so distend and
stiffen the walls of the enclosing segments so as to afford, according to density, any
desired pneumatic bearing power.
In order that my Invention may be properly understood and readily carried into
effect I have hereunto appended one sheet of Drawings of which
Figure 1 is a cross section of part of an ordinary Westwood rim of cycle showing
one form of carrying out my Invention.
Figure 2 is a cross section partly in elevation of a different form.
Figure 3 is a detached view of one form of cup partly in section.
Figure 4 is an opposite view of a different modification.
Figure 5 is a plan of part of different form of rim showing balls in position.
Figure 6 is a cross section of the same.
Figures 7 and 8 are separate views of the sections or segments.
The cup A which is made of aluminium or other suitable light metal or material, is
bolted to the rim B of the cycle or other vehicle as shown in Figures 1 and 2, by the
bolt C in some cases and where necessary also acting as a valve for inflating the
sections D or pouch G. The sections D are provided with a thickened edge or ring E
round their lower face so that when these sections D are placed in position they are
held or borne there by this thickened edge or ring E engaging with a small
overlapping flange F which may be either on the inside of the cup as shewn in
Figures 1 and 3 or on the outside as shewn in Figures 2 and 4, or a groove in wall of
cup may serve the same purpose. The bladder or pouch G which is placed inside the
section D and which is connected with the valve C when inflated distends and
stiffens the walls of the sections D thereby giving the necessary pneumatic bearing
power.
In place of having the cups as described and shewn, I may make the rim B hollow
and with the necessary openings H which act as cups for the reception of the flexible
and inflatable sections, segments or basins, these openings H having an inward
flange F for retaining and bearing the sections in position, all as shewn in
Figures 5 and 6.
These segments or sections may be inflated separately or I may arrange to inflate
them simultaneously by a connecting tube or air-tight hollow in the rim.
From my improvements it will be obvious that the revolution of the wheel will be
made upon a series of hemispherical, spherical or hemispheroidal arcs or points
pneumatic, which are placed around rim of wheel that the progressive revolution of
the wheel would be made upon an intermittent series of arcs or points.
For railway vehicles I provide a guiding flange extending from rim of wheel as on
existing wheels.

page_text: invention and in what manner the same is to be performed, I declare that what I
claim is :-
Pneumatic tyres for cycles and all kinds of road and rail vehicles constructed
substantially as and for the purposes hereinbefore described and illustrated on the
accompanying sheet of drawings.
Dated this 16th day of June 1807
BOTTOMLEY & LIDDLE,
154 St. Vincent Street, Glasgow, Applicant's Patent Agents.