IMPROVEMENTS IN THE MANUFACTURE OF RAILWAY WHEELS
Year: 1848

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS-
FORSYTH, of New North Road, in the County of Middlesex, Engineer, send'
grecting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under. the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Fifteenth day of
April, One thousand eight hundred and forty-eight, in the eleventh year of
Her reign, did, for Herself,-Her heirs and successors, give and grant unto-
me, the said Thomas Forsyth, my exors, adññors, and assigns, Her especial.
licence, full power, sole privilege and authority, that I, the said Thomas.
Forsyth, my exors, admors, and assigns, or such others as I, the said Thomas.
Forsyth, my exors, adññors, or assigns, should at any time agree with, and.
no others, from time to time and at all times during the term of years
therein expressed, should and lawfully might make, use, exercise, and vend,
within England, Wales, and the Town of Berwick-upon-Tweed, my Invention.
of "IMPROVEMENTS IN THE MANUFACTURE OF RAILWAY WHEELS;" in which said
Letters Patent is contained a proviso that I, the said Thomas Forsyth, should:
cause a particular description of the nature of my said Invention, and in what
manner the same is to be performed, by an instrument in writing under my
hand and scal, to be inrolled in Her Majesty's High Court of Chancery

page_text: within six calender months next and immediately after the date of the said
in part recited Letters Patent, as in and by the same, referenco being thereunto
had, will more fully and at large appear.
.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Thomas Forsyth, do hereby declare that the nature of my said Invention, and
in what manner the same is to be performed, are fully described and ascer-
tained in and by the following statement thereof, reference being had to
the Drawing hereunto annexed, and to the figures and letters marked thereon,
that is to say:-
My improvements consists of manufacturing solid wrought-iron wheels for
railways, each wheel when made being of a single piece of iron, and forged
by means of cones or rollers acting upon the disc of iron, as herein described.
DESCRIPTION OF THE DRAWING.
In each of the figures, of which the same letters denote the saine parts,
Figures 1, 2, and 3 are plans and sections of the iron suitable to be operated
on according to my Invention. Figure 4 represents a loose axis, upon which
the iron is to revolve in process of being forged by rollers. In Figure 1, a is
a plan, and 6 a section of a flat circular plate of wrought iron about the
diameter of the wheel required, and of a thickness to give the proper quantity.
of material. This piece of iron, when at a proper heat, is to be introduced
into machinery, and shaped or forged by rolling, as hereafter explained.
Figure 5, 6. represents the heated iron; c, c, the rolling or forging cones, and
d, the axis upon which the heated iron revolves. The pressure of these cones
or rollers will cause a change in the configuration of the heated iron, and there-
fore properly-shaped guide rollers are arranged to cause it to assume the form
of the wheel required, and of which forme and f in Figure 6 are plan and
section. By this arrangement I intend to spread the "sole" of the wheel out
of a thin piece of iron. In. Figure 2, 9 and h are plan and section of a piece
of iron about half the diameter, and at its outer edge about double the thick-
ness to which it is intended to be finished, its contents being the proper
quantity of iron required to make a wheel. This piece of iron is, by means of
rollers, to be increased in diameter and reduced in thickness to the finished
section. i, Figure 3, represents plan and section of a "pile," by which
arrangement the iron to be rolled 'will, at commencement of rolling, be
nearly of the shape required. It is composed of a thin circular plate j, and
bars k, l, m, m, 'bent into circles, and when heated they are placed into dies
or moulds of the proper shape and welded, as shewn at section n, and after-

page_text: wards introduced into the machinery to be completed according to my
Invention; other arrangements of "piles" may be resorted to and forged by
machinery according to my Invention.
I do not confine myself to any particular shape of iron when commencing to
roll, nor do I confine myself to the particular shape of the rollers, nor to the
arrangement of machinery shewn for actuating the rollers.
Figure 7 is a general plan, and Figures 8 and 9 are sectional elevations of
the rolling machinery, arranged according to my Invention. 0, 0, shew the
positions of two furnaces; b, b, pieces of hot iron in them; p, p, cranes for
conveying iron to and from the rolling mill; 9 is a post fast to foundation, and
r, r, arms of a frame revolving on it. By means of screws s, s, placed at ends
of revolving arms, the axis d of the iron b is supported. t is a driving shaft
which, by means of wheels u, u, u, u, and shafts v, v, actuate the rollers c, c, in
the circular direction; w, w, are racks attached to the "housings" of the
rollers, which being actuated through the spur wheel and shaft y, by power
applied at z, admit of the rollers c, c, being pressed together or separated as
necessary. a¹, a¹, are conical guage rollers by which the depth of "nave"
for the intended wheel is determined, and its disc surfaces made true and
smooth; 6; 6, are guide pulleys (several of which may be arranged round the
heated iron) for regulating the diameter and determining the form of peri-
phery of the wheel required. They are set in sliding frames c¹, and moved
towards or from the axis d by means of the hand wheels d', d, and 'screws
which are attached to the sliding frames c¹.working into them. The framing
of the rolling mill consists of a foundation plate e¹, two turned columns f¹,ƒ³,
and a top frame g¹. The ends of the "housings" h³, h³, are bored to fi the
turned colums f, f, so as to admit their being used as guides for the sliding
motion of the rollers.
Having thus described the nature of my Invention, I would remark that I
do not confine myself to the details as herein shewn and described, so long as
the peculiar character of my Invention be retained; bt what I claim is, the
so arranging machinery that railway wheels may be forged or formed from
discs or suitable piles or arrangements of iron by rolling.
In witness whereof, I, the said Thomas Forsyth, have hereunto set my
hand and seal, this Thirteenth day of October, in the year of our
Lord One thousand eight hundred and forty-eight.
THOMAS (L.S.) FORSYTH.

page_text: AND BE IT REMEMBERED, that on the Thirteenth day of October,
in the year of our Lord 1848, the aforesaid Thomas Forsyth came before our
said Lady the Queen in Her Chancery, and acknowledged the Specification
aforesaid, and all and every thing therein contained and specified, in form
above written. And also the Specification aforesaid was stamped according
to the tenor of the Statute made for that purpose.
.. Enrolled the Fourteenth day of October, in the year of our Lord One
thousand eight hundred and forty-eight.