IMPROVEMENTS IN TREATING WORN-OUT RAILWAY TYRES
Year: 1863

page_text: LETTERS PATENT to James Edward McConnell, of Dean's Yard, in the
City of Westminster, Civil Engineer, "and George Hinton Bovill, of
Durnsford Lodge, near Wandsworth, in the County of Surrey, Civil
Engineer, for the Invention of "IMPROVEMENTS IN TREATING WORN-OUT
RAILWAY TYRES."
Sealed the 6th November 1868, and dated the 12th May 1863.
PROVISIONAL SPECIFICATION left by the said Janies Edward M*Connell
and George Hinton Bovill at the Office of the Commissioners of Patents,
with their Petition, on the 12th May 1863.
We, JAMES EDWARD MCCONNELL, of Dean's Yard, in the City of West-
minster, Civil Engineer, and GEORGE HINTON BOVILL, of Durnsford Lodge,
near Wandsworth, in the County of Surrey, Civil Engineer, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN TREATING WORN-OUT
RAILWAY TYRES," to be as follows:-
This Invention relates to modes of treating worn-out railway tyres, whereby
in place of breaking up the tyres as scrap iron worn tyres may be re-manu-
factured into new tyres in hoops in a simple and economical manner.
In carrying out the first part of this Invention it is proposed to take an old
hoop tyre, say, for a locomotive driving wheel, for example, and after heating

page_text: it to the proper temperature to work the hoop through a suitable tyre rolling
machine provided with compressing rolls acting upon the outside of the red-
hot hoop, whereby the diameter of the hoop is gradually reduced, and the
thickness of the tyre increased in a corresponding ratio. The rolls are made
to give the required form to the new tyre. The compression of the iron of
the hoop is carried on till the diameter is somewhat less than is required for
the finished size, in order that rolls of the rolling machine may then be brought
to bear upon the inside as well as the outside of the tyre to thoroughly
compress the iron and roll out the hoop between the inside and outside rolls
to the required size and section, for example, the hoop tyre of a worn 6-feet
driving wheel may be reduced in the compressing rolling machine to 3 feet
3 inches diameter, then elongated by the combined action of the inside and
outside rolls till of proper size and section for a 3 feet 6 inches wheel. This
part of our Invention is applicable to the re-manufacture of all worn hoop
tyres from a large to a smaller diameter, such as worn tyres of 4 feet carriage
and wagon wheels into new tyres for 3 feet or 2 feet 6 inches wheels, according
to the thickness of iron required in the new tyre.
The second part of our Invention for re-manufacturing old hoop tyres consists
in heating the old hoop tyre to a suitable high heat, and whilst in that state
to place the same in a mould, and pour into such mould around the outer face
of the hoop molten homogenous iron, Bessemer iron, or cast steel, to make up
the required thickness of metal for the new tyre; if quickly done at a proper
temperature the molten iron or steel poured into the mould against the old
hoop will unite completely with it, and as soon as the metal has set the com-
bined hoop is to be rolled out in the tyre rolling mill to the required size and
section; if necessary, the hoops are to be put again into the furnace and brought
to a welding heat to insure the complete welding of the new to the old metal.
In carrying out this part of our Invention it is proposed to pass the old hoop
tryres properly heated first through the compressing tyre rolling mill to reduce
them in diameter to standard sizes to fit the moulds into which they are
(when reheated) subsequently to be placed for receiving the molten metal;
suitable grooves are rolled on the face of the old hoops, so as to give the new
molten metal a better combined connexion with it. The combined hoops are
elongated or rolled out to the required larger diameter and of suitable section,
whereby the metals become properly worked and consolidated for a finished
hoop tyre in one piece and without a weld.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James Edward McConnell and George Hinton Bovill in the
Great Seal Patent Office on the 12th November 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JAMES
EDWARD MCCONNELL, of Dean's Yard, in the City of Westminster, Civil
Engineer, and GEORGE HINTON BOVILL, of Durnsford Lodge, near Wands-
worth, in the County of Surrey, Civil Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twelfth day of May, in the year of our Lord One
thousand eight hundred and sixty-three, in the twenty-sixth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto us, the said
James Edward McConnell and George Hinton Bovill, Ier special license
that we, the said James Edward McConnell and George Hinton Bovill, our
executors, administrators, and assigns, or such others as we, the said James
Edward McConnell and George Hinton Bovill, our executors, administrators,
or assigns, should at any time agree with, and no others, from time to time
and at all times thereafter during the term therein expressed, should and
lawfully might make, use, exercise, and vend, within the United Kingdom
of Great Britain and Ireland, the Channel Islands, and Isle of Man, an
Invention for "IMPROVEMENTS IN TREATING WORN-OUT RAILWAY TYRES," upon
the condition (amongst others) that we, the said James Edward McConnell
and George Hinton Bovill, our executors or administrators, by an instrument
in writing under our hands and seals, or under the hand and seal of one
of us, should particularly describe and ascertain the nature of the said Inven-
tion, and in what manner the same was to be performed, and cause the
same to be filed in the Great Seal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that we, the said James Edward McConnell and George
Hinton Bovill, do hereby declare the nature of said Invention, and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement, that is to say :-
This Invention relates to modes of treating worn out railway tyres whereby
in place of breaking up the tyres as scrap iron, worn tyres may be re-manu-
factured into new tyres in hoops in a simple and economical manner.
In carrying out the first part of this Invention it is proposed to take an old
hoop tyre, say, for a locomotive driving wheel, for example, and after heating
it to the proper temperature to work the hoop through a suitable tyre rolling
machine provided with compressing rolls acting upon the outside of the red-

page_text: hot hoop, whereby the diameter of the hoop is gradually reduced and the
thickness of the tyre increased in a corresponding ratio. The rolls are made
to give the required form to the new tyre. We prefer to carry on the com-
pression of the iron of the hoop till the diameter is somewhat less than is
required for the finished size of tyre, in order that rolls of the rolling machino
may then be brought to bear upon the inside as well as the outside of the tyre
to thoroughly compress the iron, and roll out the hoop between the inside and
outside rolls to the required size and section in the ordinary way, for example,
the hoop tyre of a worn six-feet driving wheel may be reduced in the com-
pressing rolling machine to three feet three inches diameter, then elongated
by the combined action of the inside and outside rolls till of proper size and
section for a three feet six inches wheel. This part of our Invention is
applicable to the re-manufacture of all worn hoop tyres from a large to a
smaller diameter, such as worn tyres of four feet carriage and wagon wheels
into new tyres for three feet or two feet six inches wheels according to the
thickness of iron required in the new tyres.
'
The second part of our Invention for re-manufacturing old hoop tyres
consists in heating the old hoop tyre to a suitable high heat, and whilst in that
state to place the same in a mould and pour into such mould around the outer
face of the hoop molten homogenous iron, Bessemer iron, or cast steel, to
make up the required thickness of metal for the new tyro. If quickly done
at a proper temperature the molten iron or steel poured into the mould against
the old heated hoop will unite completely with it, and as soon as the metal
has set the combined hoop is to be rolled out in the tyre rolling mill to the
required size and section. If necessary the hoops are put again into the
furnace and brought to a welding heat to insure the complete welding of
the new to the old metal.
In carrying out this part of our Invention we prefer to pass the old hoop
tyres properly heated first through the compressing tyre rolling mill to reduce
them in diameter to standard sizes to fit the moulds into which they are (when
reheated) subsequently to be placed for receiving the molten metal. Suitable
grooves are rolled on the face of the old hcops, so as to give the new molten
metal a better combined connexion with it. The compound hoops are
clongated or rolled out to the required larger diameter and of suitable section,
whereby the metals become properly worked and consolidated for a finished
hoop tyre in one piece, thus avoiding the danger and uncertainty attending the
welding the ends of iron tyres when made into hoops.
In carrying out our Invention we prefer to use the tyre rolling machine,
known as Bodiner's Patent, with additional compressing rolls added thereto to

page_text: act upon the outside of the hoop. This machine is so well known, and as we
do not claim it as any part of our Invention, we have not considered it
necessary to attach a Drawing of the machine.
In witness whereof, I, the said Georgo Hinton Bovill, on the part of
myself and the said James Edward McConnell, have hereunto set my
hand and seal, this Twelfth day of November, One thousand eight
hundred and sixty-three.
GEORGE HINTON BOVILL. (L.B.)
GEORGE HINTON BOVILL. (L.S.)