Improvements in Elastic Tyres for the Wheels of Vehicles.
Year: 1896

page_text: Date of Application, 13th Aug., 1896
Complete Specification Left, 12th May, 1897-Accepted, 12th June, 1897
Improvements in Elastic Tyres for the Wheels of Vehicles.
I, EDWARD ALEXANDER, of 36 Victoria Road, Dundee, in the County of
Forfar, Scotland, Clerk do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in elastic tyres for the wheels of vehicles,
the object being to provide a tyre which shall be resilient, and at the same time
durable.
In carrying out my invention I employ a cover of leather, or other suitable
material and attach it to the rim in any known suitable way. Air, applied by
means of the usual inner air tube may be employed to give the necessary elasticity,
or it may be obtained by other known means, such as by stuffing the cover with
elastic material. On the tread of the cover at suitable intervals are metal eyelets
and into these are fixed pieces of rubber in such a manner that they appear as
rounded protuberances on one side. I find the best means of fixing these is to
select a cord of flexible rubber of a diameter rather more than the bore of the
eyelets in the cover. By stretching the elastic cord its diameter may be reduced
to such an extent that it may be doubled and drawn into the eyelet hole by means
of a cord, that is to say the axis of the clastic cord is placed normal to the axis of
the eyelet hole and the cord is then applied to draw it into the eyelet. When the
cord is withdrawn the rubber appears as a rounded protuberance on one side.
Eyelets are used in order that the greatest possible quantity of rubber may be
fixed therein. Sometimes the rubber is cut across after it is drawn into the eyelets,
thus dividing such rubber into two parts fixed side by side in the one hole. The
rubber may be drawn into its hole from either the outside or the inside, that is to
say the rounded protuberance may be either outside or inside the cover.
The advantages of employing a cover of this description are that less rubber
than usual is required, its liability to puncture is reduced to a minimum, the tread
is narrow and as each piece of rubber is apart the flexibility of the cover proper
is almost unimpaired and further because of these protuberances there is no
possibility of the tyre tending to adhere to the road because of suction. The.
tendency to side slip is also reduced.
Dated this 11th day of August 1896.
GEO. C. DOUGLAS & Co.,
41 Reform Street, Dundee, Agents for Applicant.
COMPLETE SPECIFICATION.
Improvements in Elastic Tyres for the Wheels of Vehicles.
I, EDWARD ALEXANDER, of 36 Victoria Road, Dundee, in the County of
Forfar, Scotland, Clerk, 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 relates to improvements in elastic tyres for the wheels of vehicles,
the object being to provide a tyre which shall be resilient, and at the same time
durable

page_text: And in order that my said invention and the manner of performing or carrying
the same into effect or practice may be properly understood I have hereunto
appended an explanatory sheet of drawings in which the same reference numerals
are used to indicate corresponding parts in all the figures where shown, that is
to say :-
Figure 1. is a cross-section of a pneumatic tyre fitted with my improvements.
Figure 2. is a part sectional side view of the same.
Figure 3. is a part side view showing the exterior of the tyre.
Figure 4. is a part plan.
Figure 5. is a side view of one of the studs before it is placed in position.
In carrying out my invention I employ a cover 10. of leather, or other suitable
material and attach it to the rim in any known suitable way. In the drawings I
have shown such cover attached to the rim by means of wires. Air, applied by
means of the usual inner air tube 11. may be employed to give the necessary
elasticity or it may be obtained by other known means, such as by stuffing the
cover with elastic material. On the tread of the cover at suitable intervals are
eyelets 12. of metal or other material, and into these are fixed pieces of rubber 13.
in such a manner that they appear as rounded protuberances on one side. One
means of fixing these is to select a cord of flexible rubber of diameter rather
more than the bore of the eyelets in the cover. By stretching the elastic cord its
diameter may be reduced to such an extent that it may be doubled and drawn into
the eyelet hole by means of a cord, that is to say the axis of the elastic cord is
placed normal to the axis of the eyelet hole and the cord is then applied to draw it
into the eyelet. When the cord is withdrawn the rubber appears as a rounded
protuberance on one side. Sometimes I mould the rubber in the form shown by
Figure 5, drawing it into position by means of a cord as previously explained.
Eyelets are used to strengthen the edges of the holes in order that the greatest
possible quantity of rubber may be fixed therein, thus lessening the chance of
their coming out accidentally. Sometimes the rubber is cut across after it is
drawn into the eyelets thus dividing such rubber into two parts fixed side by side
in the one hole. The rubber may be drawn into its hole from either the outside
or the inside, that is to say the rounded protuberance may be either outside or
inside the cover. The protuberances may be of other material than rubber such
as for example wood.
The advantages of employing a cover of this description are that less rubber than
usual is required, its liability to puncture is reduced to a minimum, the tread is
narrow and as each piece of rubber is apart the flexibility of the cover proper is
almost unimpaired and further because of these protuberances there is no
possibility of the tyre tending to adhere to the road because of suction. The
tendency to side slip is also reduced.
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
claiff is :-
(1.) In tyres the combination and arrangement of parts consisting of the cover 10,
eyelets 12, and pieces of rubber or other material 13, substantially as described
and illustrated on the annexed drawings.
Dated
day of May 1897.
GEO. C. DOUGLAS & Co.,
41 Reform Street, Dundee, Agents for Applicant.