Improvements in or relating to Pneumatic Tyres.
Year: 1890

page_text: Date of Application, 26th Nov., 1390
Complete Specification Left, 26th Aug., 1891-Accepted, 26th Sept., 1891
PROVISIONAL SPECIFICATION.
Improvements in or relating to Pneumatic Tyres.
I, JAMES DAWSON of Tower Buildings, Church Gate, Leicester, Tailor, do
hereby declare the nature of this invention to be as follows:-
This invention has reference to pneumatic tyres for the wheels of bicycles,
tricycles, and other velocipedes or vehicles.
The object of this invention is to effect such an improvement in the construction
of the pneumatic tyres as will enable them to be more readily and easily secured to
the vehicle wheels and quickly removed therefrom, when the necessity for repairing
the tyres should arise from any cause whatever.
Heretofore the external protective rubber covering which comes in contact with
the ground, and the internal cloth or canvas covering containing the air tube
have been secured together and to the rim of the wheel by cement, solution or
the like.
Thus when it has been desired to remove and refix the tyre, when the latter has
required repairing or renewing, the adhesion of the parts mentioned has made the
process troublesome and take an unnecessary length of time, besides considerably
increasing the wear and tear of the parts to which the adhesive material-is
applied.
According to this invention I dispense with the use of cement, composition,
solution or other adhesive material and secure the canvas or cloth covering to the
external protective rubber covering, or the whole to the rim of the wheel by lacing,
stitching, or tying, or the internal canvas covering and the external rubber covering
may be united by studs or similar means.
To enable the parts to be secured in position by lacing, they are connected
together or provided with eyelets or eyelet hooks, and when stitching, eyeletting
or eyelet hooks are employed, they may be allowed also to pass through strips
of leather or equivalent material to give additional firmness and strength to the
tyre.
Dated this 26th day of November 1890.
W. P. THOMPSON & BOULT,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or relating to .Pneumatic Tyres.
I, JAMES DAWSON of Tower Buildings, Church Gate Leicester, 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:
This invention has reference to pneumatic tyres for the wheels of bicycles,
tricycles, and other velocipedes or vehicles.
The object of this invention is to effect such an improvement in the construction
of the pneumatic tyres as will enable them to be more readily and easily secured
to the vehicle wheels and quickly removed therefrom, when the necessity for
repairing the tyres should arise from any cause whatever.
Heretofore, as far as I am aware, the external protective rubber covering which
comes in contact with the ground, and the internal covering containing the air
tube have been secured together and to the rim of the wheel by cement, 'solution
or the like.

page_text: Thus when it has been desired to remove and refix the tyre, when the latter has
required repairing or renewing, the adhesion of the parts mentioned has made the
process troublesome and take an unnecessary length of time, besides considerably
increasing the wear and tear of the parts to which the adhesive material is
applied.
According to this invention I dispense with the use of cement, composition,
solution or other adhesive material and secure the internal air tube covering to the
external protective rubber covering, or the whole to the rim of the wheel by lacing,
stitching or tying, or the internal covering and the external rubber covering may
be united by studs or similar means.
To enable the parts to be secured in position by lacing, they are connected
together or provided with eyelets or eyelet hooks, and when stitching, eyeletting
or eyelet hooks are employed, they may be allowed also to pass through strips
of leather or equivalent material to give additional firmness and strength to
the tyre.
The invention will be more readily understood by referring to the accompanying
drawings in which
Figure 1 is an outside view of a portion of the outer covering of a pneumatic
tyre, laid out flat, and embodying my improvements.
Figure 2 is an inside view and
Figure 3 a section of the same.
Figure 4 is a section of a wheel rim and a pneumatic tyre with the outer covering
open and
Figure 5 is a similar view shewing the tyre laced on the rim.
Figure 6 is an elevation of a portion of a tyre with the outer covering open, as
in Figure 4, but with the wheel rim removed.
Figure 7 is a similar view with the outer covering laced on the wheel rim as in
Figure 5.
Similar letters of reference represent corresponding parts throughout the
drawings.
A. represents the outer rubber covering of a pneumatic tyre which, as is usual, is
thickened or stouter at the tread or portion which comes into contact with the
ground.
B represents the air tube which is of ordinary construction and inflated with air
or gas under compression in the usual way.
In order to secure the air tube in proper position in relation to the outer rubber
covering, the latter has attached thereto the inner covering for the air tube, which
consists of a flap C on each side thereof and preferably of canvas and rubber
vulcanised together.
These flaps are secured to the outer covering by one or more rows of stitches C¹
and by lacing studs D, the free edges of the flaps being perforated and eyeletted
at C² to admit of being laced together over the inflated air tube as shewn most
clearly in Figures 4, 5 and 6.
A layer E of canvas or other suitable material is connected by stitches E¹ to the
flaps and is interposed between the air tube B and the flaps C for protecting the
former from direct frictional contact with the latter.
The lacing hooks D pass through the outer covering A and the flaps C and are
additionally strengthened to bear the tensile strain of the laces, when the tyre is
fixed on the wheel rim, by metal washers D¹ or equivalents interposed between the
lacing hooks and the outer covering, and flaps, as most clearly indicated in Figures 3
and 4.
From the foregoing it is evident that as the air tube is secured within the outer
covering by the lacing of the flaps C, Figures 4 and 6, and as the outer covering
is fixed in position on the wheel rim by lacing the hooks thereon, as in Figures
and 7, no composition, cement, or adhesive material is required and the tyre can
be readily removed and replaced when such is necessary for repairing or renewal
purposes.

page_text: 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 :-
1. A pneumatic tyre for cycle and other wheels consisting of an inner tube
capable of being inflated, an outer rubber covering adapted to be laced over the
wheel rim and having flaps eyeletted at the edges to permit of being laced together
to encase the air tube and an interposed protecting layer of canvas substantially as
described and illustrated in the accompanying drawings.
2. In a pneumatic tyre for cycle and other wheels the combination with the
outer covering of flaps such as C attached thereto and adapted to be laced together
to encase the air tube substantially in the manner described and illustrated in the
accompanying drawings.
D
ليكم
3
C T1
1001
JAMES DAWSON.