Improvements in Tyres for Vehicle Wheels.
Year: 1899

page_text: Date of Application (in United Kingdom), 30th Dec., 1899
Improvements in Tyres for Vehicle Wheels.
I, HENRI TANGHE, Engineer, of 171, Avenue de Neuilly, Seine, in the French
Republic, 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 tyres for cycle, motor car and other vehicle wheels,
and its object is to construct a tyre which shall more effectually take up the
vibrations set up when the tyre is in use upon a vehicle wheel.
The invention consists in building a tyre having three air passages separated
from each other and passing right through the tyre, two of the passages being
arranged side by side in the lower portion of the tyre and the third passage being
formed above these two lower passages to take up the vibrations which are trans-
mitted thereto when the tyre is in use.
In carrying my invention into effect I construct a tyre of flexible material,
preferably indiarubber or its derivatives, of a shape such as illustrated by Figure 1
in the accompanying sheet of explanatory drawings; this figure being a trans-
verse section of the tyre which is formed from a single piece of indiarubber or
like material, the two lower passages ab presenting the shape of an irregular
oval and the upper passage c presenting the shape of a triangle with its angles
rounded off. The outer walls of these three passages approximate to the periphery
of the tyre and the inner walls between the passages present the shape of a Tor
a reversed marked A and B on the drawing, A forming the perpendicular
bar while B forms the horizontal bar of the T.
Figure 2 illustrates the tyre in transverse section provided with a rim or felley
as the same would appear when not in use, while,
Figure 3 illustrates the same tyre carrying a load.
When a load is put upon the tyre the sides e e thereof are forced outwards and
the perpendicular bar A of the T piece A B is compressed in the direction of its
height. This pressure is transmitted to the horizontal bar B of the T, and,
owing to the parallel position of this horizontal bar with the felley and to its
connection with the exterior sides of the tyre, this pressure is again transmitted
071

page_text: to the cavity c which serves to take up the alteration in outline of the horizontal
bar B.
By the vibration of the horizontal bar B a springy action is set up similar to
that in a compressed air tyre while lateral pressures are avoided which arise in
the use of pneumatic tyres as at present constructed.
In a tyre constructed as herein before described all repelling actions take place
within the material of the tyre and when a load is applied the sides have a
tendency to form a circle with the horizontal bar which collects all the' vibrations
and transmits them in a springy motion, the vibrations finding their re-action in
the cavity which is filled with air at atmospheric pressure.
Should either of the cavities a or b of the tyre become punctured and thus
brought into contact with the exterior air, the elasticity of the tyre is not affected,
seeing that the vertical bar A of. the T transmits the flexible motion to the
horizontal bar B this bar taking up any vibrations which arise on the rotation of
the wheel.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1. An elastic tyre for cycle, a motor car and other vehicle wheels having three
passages or cavities passing therethrough, the two lower passages or cavities
taking up the vibrations from the road and transmitting them through the medium
of the perpendicular var A and the horizontal bar B of the interior T shaped part
of the tyre to the cavity c which serves as a recess for this horizontal bar, the
cavity being filled with air at atmospheric pressure substantially as herein-
before described.
2. An elastic tyre for vehicle wheels having three passages or cavities passing
therethrough to take up the vibrations of the wheel when in use, constructed
and arranged substantially as herein before described and as illustrated in the
accompanying drawings.
Dated this 30th dow of Docal
1000
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and
25, Cross Street, Manchester, Agents.