IMPROVEMENTS IN THE MANUFACTURE OF RAILWAY WHEELS, AND OTHER ARTICLES OF CAST STEEL OB MALLEABLE CAST IRON
Year: 1860

page_text: LETTERS PATENT to Edward Brown Wilson, of Parliament Street, in the
City of Westminster, Engineer, for the Invention of "IMPROVEMENTS IN
THE MANUFACTURE OF RAILWAY WHEELS, AND OTHER ARTICLES OF CAST STEEL
OB MALLEABLE CAST IRON."
Sealed the 7th May 1861, and dated the 16th November 1860.
PROVISIONAL SPECIFICATION left by the said Edward Brown Wilson
at the Office of the Commissioners of Patents, with his Petition, on
the 16th November 1860.
I, EDWARD BROWN WILSON, of Parliament Street, in the City of West-
minster, Engineer, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN THE MANUFACTURE OF RAILWAY WHEELS, AND OTHER ARTICLES
OP CAST STEEL OR MALLEABLE CAST IRON," to be as follows:-
This Invention consists in the manufacture of railway wheels and other
articles of cast steel or malleable cast iron, by either forging cast steel or
malleable cast iron in dies, or shaping and compressing such articles after they
have been cast or forged by the aid of suitable dies acted upon by hydrostatic
pressure, or by steam power.

page_text: 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 16th May 1861.
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 Sixteenth day of November, in the year of our
Lord One thousand eight hundred and sixty, in the twenty-fourth 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 Inven-
tion for "IMPROVEMENTS IN THE MANUFACTURE OF RAILWAY WHEELS, AND OTHER
ARTICLES OF CAST STEEL OR MALLEABLE CAST IRON," 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 Palent.
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 following statement, reference being had to the accompanying Drawings,
and to the letters and figures marked thereon, that is to say:-
My said Invention consists in manufacturing railway disc wheels and other
articles of cast steel or of maleable cast iron, by either forging such articles
so composed in suitable dies, or by shaping them after they have been cast or
forced by the aid of suitable dies acted upon by steam power.
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 Figures on the Sheet of Drawings hereunto annexed, the same

page_text: letters of reference indicating corresponding parts throughout the corresponding
Figures.
Figure 1 of the Drawings represents a vertical section of a pair of dies for
pressing, shaping, and finishing cast steel or malleable cast iron railway disc
wheels. In this Figure a wheel blank a is represented before it is pressed;
care must be taken in casting these blanks to make them of sufficient diameter
to allow for contraction, so that they may fit the shaping dies as closely as
possible when placed therein. These dies are composed of two parts only, the
upper part A shaping the inner face of the entire wheel, and the bottom one B
shaping the outer face tread and flange of the wheel.
Figure 2 is a vertical section of another arrangement of dies for the same
purpose; here the matrix or die is composed of three parts or dies A, B, and C.
The die A shapes the inner face of the wheel a, the die B forms the tread and
flange of the wheel, and the top die C shapes the outer face of the wheel.
The two dies A and B are made to fit accurately together, by having a
corresponding projection and recess formed on them respectively, as shewn
at D, D, so that when adjusted and held together by the cottar bolts E, E,
they are in the exact position for shaping the wheel. The top die C is move-
able, and is made to fit accurately a circular aperture in the die B. The wheel
blank having been cast in a suitable mould is reheated and introduced into the
die A. Upon this is placed the die B, which is then held fast down by the
bolts before mentioned. The die C is forced down by steam power, and by its
pressure upon the wheel it not only shapes the surfaces and periphery of the
same by forcing them into their respective dies, but also forms the boss. The
die C has a collar or flange b cast upon it, for the purpose of being caught by
the die B when it is elevated, so that both dies may be lifted together.
c, c, are ring bolts screwed into the die B for lifting the same; and d, d, are
square porter bar holes for lifting the top die C only.
Figures 3 and 4 represent respectively a vertical section and plan of a set
of dies for pressing the blooms intended for the manufacture of armour plates.
a represents the bloom intended to be pressed; it may either be cast in the die
or matrix A in which it is pressed, or it may be cast in a separate mould, and
then placed in the die or matrix A after being reheated. I prefer to make
this die A in four parts, as shown, in order to facilitate the removal therefrom
of the pressed and consolidated bloom. The several parts may be held together
by clamps b, b, and the whole is contained in a recess or cavity formed to
receive it in the metal bed or block B; C is the top or pressing die, which is
made to fit accurately the cavity of the die A. It is obvious that the same

page_text: system of compression in dies may be applied to the manufacture of various
other articles of cast steel or malleable cast iron.
Having now described and particularly ascertained the nature of my said In-
vention, 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, the system or mode of shaping and
finishing cast steel or malleable cast-iron railway disc wheels by powerful
pressure in suitable dies, as herein-before described.
In witness whereof, I, the said Edward Brown Wilson, have hereunto
set my hand and seal, the Fourteenth day of May, One thousand
eight hundred and sixty-one.
EDW. B. WILSON. (L.S.)