Improvements in Pneumatic Tyres.
Year: 1893

page_text: Date of Application, 22nd June, 1893
Complete Specification Left, 2'st Mar., 1894-Accepted, 5th May, 1894
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Tyres.
I, HENRY ALBERT FLEUSS, of Harvey Cottage, Laleham Road, Staines in the
County of Middlesex, Engineer, do hereby declare the nature of this invention to
be as follows:-
The object of my invention is to provide efficient means for protecting the
inflated tube of pneumatic tyres. I surround the exterior of the tube with a hoop
of thin hardened and tempered steel preferably as broad as or broader than the
diameter of the tube and which is perfectly flat in cross section so that it may be
free to bend with the greatest ease. The outer circumference of the steel hoop I
cover with a coating of vulcanized india rubber either flat or rounded or of other
form on the exterior and I continue this covering of vulcanized india rubber
around the side edges of the steel hoop and into the angles between the inside
surface of the steel hoop and the tube which is to be inflated. This covering and
the tube that is to be inflated are all to be vulcanized together in a mould in such
a way that the parts unite together and to the surfaces of the steel hoop embedded
in them.
Dated this 17th day of June 1802
HENRY A. FLEUSS.
COMPLETE SPECIFICATION.
Improvements in Pneumatic Tyres.
I, HENRY ALBERT FLEUSS, of Harvey Cottage, Laleham Road, Staines, in the
County of Middlesex, Engineer, 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 :-
The object of my invention is to provide efficient means for protecting the
inflated tube of pneumatic tyres. I surround the exterior of the tube with a hoop
of thin hardened and tempered steel preferably as broad as or broader than the
diameter of the tube and which is perfectly flat in cross section so that it may be
free to bend with the greatest ease. The outer circumference of the steel hoop I
cover with a coating of vulcanized india rubber either flat or rounded or of other
form on the exterior and I continue this covering of vulcanized india rubber
around the side edges of the steel hoop and into the angles between the inside
surface of the steel hoop and the tube which is to be inflated. This covering and
the tube that is to be inflated may all be vulcanized together in a mould in such
a way that the parts unite together and to the surfaces of the steel hoop embedded
in them.
To ensure this I first coat the surfaces of the steel band with copper or with
other metal with which vulcanized india rubber will unite-this I do either
by dipping the band in any of the usual solutions but preferably by electro
deposition.
A complete hoop of steel band as broad as or broader than the diameter of the
inflated tube which it is to protect having thus been coated with copper or other
metal is embedded in vulcanizable india rubber composition and enclosed in a mould
of the form required for the protecting band either alone or in one piece with the
tube to be inflated or in one piece with an outer band used for enclosing the inflated
tube and is submitted to heat in the ordinary way to effect the vulcanization of the
india rubber compound.

page_text: Figure 1 of the drawings annexed shows a cross section of inflated tyre and
protecting band formed together in one piece.
Figures 2 and 3 are cross sections of protecting hoop and inflated tube made
separately and to fit one within the other and cemented together.
Figures 4 and 5 are similar cross sections of modified forms of outer hoop
and tube.
Figure 6 shews a cross section of protecting hoop applied to one well known
form of outer covering for an inflated tube-the protecting hoop may similarly be
applied to other forms.
The inflated tyre 1 make circular in cross section or approximately so as
heretofore the steel band is flat in cross section and of a breadth equal to or
greater than the diameter of the tube to be protected-it has both on the exterior
and interior a coating of vulcanized india rubber.
Where the rounded outer circumference of the inflated tube meets the flat coated
band they are shaped to fit one into the other or are made together in one piece.
The sharp angles between the inside of the outer hoop and the outside of the tube
being filled in as shewn to avoid leaving an acute angle for grit to collect in. The
outer protecting hoop thus projects outwards on the two opposite sides of the
inflated tyre and can readily yield and adapt itself to inequalities in the surface of
the ground.
Where the inflated tube and protecting hoop are made separately to be after-
wards cemented together they may be shaped to fit together in various ways as for
example the ways shewn in Figures 2 and 3 and in Figures 4 and 5. The coating
of vulcanized india rubber on the outer surface of the hoop of flat steel band may
be flat or rounded or in ridges or of other form desired.
A tyre such as shown in Figure 1 may be made in a mould such as shown in
transverse section at Figure 7. The steel hoop is first encased with strips of green
rubber compound which are roughly shaped to the required thickness-the covered
hoop is then put into place in one half of the mould. A tube of green rubber
containing as is usual a substance which will give off gas when exposed to heat is
also placed into this half of the mould either before or after the putting in of
the covered steel band. When the other half of the mould has been put on the
whole is exposed to heat to effect the vulcanization of the rubber as is well
understood.
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 consisting of a cylindrical or approximately cylindrical
inflated tube surrounded by a hoop formed of a flat band of hardened and tempered
steel coated with vulcanized india rubber and projecting outwards from the inflated
tube at its two opposite sides substantially as described.
2. A pneumatic tyre composed of an inflated tube surrounded by a hoop of flat
hardened and tempered steel which has been first coated with copper or other
suitable metal in the way described and then had a coating of vulcanized india
rubber vulcanized on to it substantially as described.
3. A protecting hoop for the outer circumference of the inflated tube of a
pneumatic tyre composed of a hoop of flat hardened and tempered steel which has
been first coated with copper or other suitable metal in the way described and then
had a coating of vulcanized india rubber vulcanized on to it substantially as
described.
4. The construction of pneumatic tyres substantially as herein before described.
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1
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HENRY A. FLEUSS.