IMPROVEMENTS IN RAILWAY WHEELS, AND IN THE MODE OF MANUFACTURING THE SAME
Year: 1862

page_text: LETTERS PATENT to Edward Brown Wilson, of Parliament Street, in the
City of Westminster, Engineer, for the Invention of "IMPROVEMENTS IN
PROVISIONAL SPECIFICATION, left by the said Edward Brown Wilson
at the Office of the Commissioners of Patents, with his Petition, on
the 5th December 1862.
I, EDWARD BROWN WILSON, of Parliament Street, in the City of West-
minster, Engineer, do hereby declare the nature of my said Invention for
"IMPROVEMENTS IN RAILWAY WHEELS, AND IN THE MODE OF MANUFACTURING THE
SAME," to be as follows:-
This Invention relates to a peculiar construction and arrangement of railway
wheels, whereby greater economy and simplicity of construction are combined
with increased safety in cases of fracture of the tire.
According to this Invention two discs of the desired size are first. prepared
by forging or casting, and are then placed in dies and subjected to compression
or hammering therein for the purpose of giving them the desired form, whether
flat, dished, or corrugated. These dies are also so shaped as to produce a raised
annular rim all round, or partly round the circumference of the discs on one
side thereof, such rim being either parallel, V-shaped, or of any other sectional
form. The tire has corresponding annular grooves formed inside it, so as to

page_text: fit accurately over or on to the rims of the two discs which are placed inside
the tire from opposite sides thereof, and may or may not be held therein by
bolts passing through the discs. The space between the dises may be filled
in with india-rubber, cork wood, or other good sound deadening material.
The discs may be cast in steel or malleable metal, or made of "uses" under
the steam hammer, and then rolled by means of conical rollers. The com-
pressing, hammering, or rolling of the discs and tire may be done at the time
of casting or forging or subsequently by re-heating.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Edward Brown Wilson in the Great Seal Patent Office on
the 4th June 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDWARD
BROWN WILSON, of Parliament Street, in the City of Westminster, Engineer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fifth day of December, in the year of our Lord
One thousand eight hundred and sixty-two, in the twenty-sixth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Edward Brown Wilson, Her special license that I, the said Edward
Brown Wilson, my executors, administrators, and assigns, or such others as I,
the said Edward Brown Wilson, my 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 RAILWAY WHEELS, AND IN THE MODE OF MANU-
FACTURING THE SAME," upon the condition (amongst others) that I, the said
Edward Brown Wilson, my executors or administrators, by an instrument in
writing under my hand and seal, or under the hand and seal of one of them,
should particularly describe and ascertain the nature of the said Invention,
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 I, the said Edward Brown Wilson, do hereby declare
the nature of my said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the ful-

page_text: lowing statement, reference being had to the accompanying Drawings, and to
the letters and figures marked thereon, that is to say:-
My said Invention relates to a peculiar construction and arrangement of
railway wheels, whereby greater economy and simplicity of construction are
combined with increased safety in cases of fracture of the tire.
According to this Invention two discs of the desired size are first prepared
by casting in malleable metal, and are then placed in dies and subjected to
compression or hammering therein, for the purpose of giving them the desired
form, whether flat, dished, or corrugated. These dies are also so shaped as to
produce a raised annular rim all round or partly round the circumference
of the discs on one side thereof, such rim being either parallel, V-shaped, or of
other sectional form. The tire has corresponding annular grooves formed
inside it so as to fit accurately over or into the rims of the two discs, which
are placed inside the tire from opposite sides thereof, and may or may not be
held therein by bolts passing through the discs. The space between the discs
may be filled in with india-rubber, cork wood, or other good sound. 'deadening
material. The discs may be made of cast steel, or malleable metal, and then
pressed in dies.
any
In carrying out this part of the Invention I prefer to employ the press for
which, Letters Patent were granted to me on or about the Nineteenth
day of December, One thousand eight hundred and sixty-two, No. 3398.
And in order that my said Invention may be fully understood I shall now
proceed more particularly to describe the same, and for that purpose I shall
refer to the several Figures on the Sheet of Drawings hereunto annexed,
the same letters of reference indicating corresponding parts in all the
Figures.
Figure 1 represents a side elevation of my improved railway wheel;
Figure 2 is a vertical section of the same, and Figure 3 is a similar view of
a slightly modified arrangement.
A, A, are the two discs of malleable metal, cast in suitable moulds or chills,
so as to have an annular rim B formed round their outer edges on one side
or face. The centres of these discs have a boss C cast upon them, and when
the two are brought together to form a wheel, these bosses C constitute the
nave of the wheel. The tire D is provided with an annular groove on each side
corresponding to the rims B, B, of the two discs which fit accurately into
such grooves, and are held therein by screw or cotter bolts E or otherwise.
The space F between the two discs may be filled with any good soun:!
deadening material. In Figure 2 the rims B are parallel in section, and in
Figure 3 they are made angular, but I do not limit myself to any section of

page_text: rim. After the discs have been cast they may, if desired, be finished by
pressing them in dies under a powerful press, preferring for that purpose
the press I have herein-before referred to, although other presses of sufficient
power may be used, or they may be rolled by a circular rolling mill..
my said
Having now described and particularly ascertained the nature
Invention, and the manner in which the same is or may be used or carried
into effect, I would observe in conclusion, that what I consider to be novel and
original, and therefore claim as the Invention secured to me by the herein-
before in part recited Letters Patent, is,―
First, the general construction and mode of manufacturing railway wheels,
as herein-before described.
Second, the constructing of railway wheels by fitting two discs, having
projecting rims, into annular grooves in the tire, such discs being each cast
in one piece of malleable metal, as herein-before described.
In witness whereof, I, the said Edward Brown Wilson, have hereunto
set my hand and seal, this Second day of June, One thousand eight
hundred and sixty-three.