IMPROVEMENTS IN RAILWAY WHEELS AND IN METHODS OF FASTENING TIRES ON SUCH WHEELS
Year: 1875

page_text: LETTERS PATENT to Charles Llewellyn Light, of 5, Great Winchester
Street, in the City of London, Civil Engineer, for the Invention
of "IMPROVEMENTS IN RAILWAY WHEELS AND IN METHODS OF FASTENING
TIRES ON SUCH WHEELS."
Sealed the 29th February 1876, and dated the 31st August 1875.
PROVISIONAL SPECIFICATION left by the said Charles Llewellyn
Light at the Office of the Commissioners of Patents, with his
Petition, on the 31st August 1875.
I, CHARLES LLEWELLYN LIGHT, of 5, Great Winchester Street, in the
City of London, Civil Engineer, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN RAILWAY WHEELS AND IN METHODS OF
FASTENING TIRES ON SUCH WHEELS," to be as follows:-
-
This Invention relates to improvements in railway wheels, and in
methods of fastening tires on such wheels, and consists, firstly, in
making wheels from fluid steel or other metal, with the naves, centres,
and tires in one; the centres may be open, with spokes, or solid, or plain
or other shape.

page_text: The Invention consists, secondly, in forming a hook or lip on the
inner periphery of the outer face of the tire, and another hook or lip on
the inner periphery a short distance from the inner face, corresponding
hooks or lips being formed upon the rim, one projecting from the outer
face and one from the inner face. The latter one is shaped from the
outer periphery of the rim, so that the tire can be slipped or forced into
position on the rim, and be thus retained by bolts or screws passed through
the rim at intervals from the inner periphery thercof, the points or ends
of the screws taking into holes made for their reception without tapped
threads. The advantage of this plan is the tires can be easily removed
after releasing the screw bolts which are only threaded upon the parts
within the rim, nor are the tires weakened by deep holes being formed
in them.
The third part of my Invention consists in forming a groove in the
inner face and another groove in the outer face of a tire, the projecting
lips of which are cut back a short distance from the faces to correspond
with the thickness of ring plates which I employ to bear against the
tire and the rim on both sides, the ring plates being fastened in position
by bolts with rivet heads, the rivet bolts, or they may be cottars, passing
through both ring plates and the rim. The inner edge of each ring
plate forms a projection to take over the inner periphery of the rim.
By this means the tire is clamped to the rim by the lips of the rings
and effects a binding action between the two, supplemented by the rivets.
The contact of bearing surface of the rim and of the tire in this mode is
unbroken and produces great solidity.
The accompanying Drawings illustrate my Invention. Figure 1 shows
a portion of the solid metal railway wheel first referred to. a is the tire
in a picce with the rim and spokes or centre c.
The second part of the Invention is shown in Figure 2, which is a
part of a railway wheel, in which a is the tire; b, the rim; c, the
centre; d, the outer faced lip on the inner periphery of the tire; e, the
inner faced lip; f, the projection on outer face of rim; g, lip on outer
periphery of rim; and the screw bolt, the point or end of which takes
in a hole in the inner periphery of the tire as mentioned.
The third part of my Invention is illustrated at Figure 3, which is
also part of a railway wheel. a is the tire; b, the rim; c, the centro;
d, the outer faced lip of the inner periphery; g, the inner faced lip of

page_text: the same, into the grooves of which the lips i, i, of the ring plates j, j,
take; h is the rivet, or it may be a cottar, of rectangular shape in cross
section, as in detail view, Figure 4; k, k, are the inner periphery ring
plate lips to bear upon and clamp the rim and the tire into close
contact.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Charles Llewellyn Light in the Great Seal Patent
Office on the 29th February 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
LLEWELLYN LIGHT, of 5, Great Winchester Street, in the City of
London, Civil Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirty-first day of August, in the
year of our Lord One thousand eight hundred and seventy-five, in the
thirty-ninth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Charles Llewellyn Light, Her
special license, that I, the said Charles Llewellyn Light, my executors,
administrators, and assigns, or such others as the said Charles
Llewellyn Light, my executors, administrators, and 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 METHODS OF
FASTENING TIRES ON SUCH WHEELS," upon the condition (amongst others)
that I, the said Charles Llewellyn Light, my executors or admini-
strators, by an instrument in writing under my, or their, or one of
their hands and seals, 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.

page_text: is to be performed, to be particularly described and ascertained in and
by the following statement thereof, that is to say :-
This Invention relates to improvements in railway and similar wheels,
and in methods of fastening tires on such wheels, and consists, firstly,
in making wheels from fluid steel or other metal, with the naves,
centres, and tires in one; the centres may be open, with spokes, or solid,
of plain, of other shape.
The Invention consists, secondly, in forming a hook or lip on the
inner periphery of the outer face of the tire, and another hook or lip on
the inner periphery a short distance from the inner face, corresponding
hooks or lips being formed upon the rim, one projecting from the outer
face and one from the inner face. The latter one is shaped from the
outer periphery of the rim, so that the tire can be slipped or forced into
position on the rim, and be thus retained by bolts or screws passed
through the rim at intervals from the inner periphery thereof, the points
or ends of the screws taking into holes made for their reception without
tapped threads being in the tyre. The advantage of this plan is the
tires can be easily removed after releasing the screw bolts which are
only threaded upon the parts within the rim, nor are the tires weakened
by deep holes being formed in them.
The third part of my Invention consists in forming a groove in the
inner face and another groove in the outer face of a tire, the projecting
lips of which are cut back a short distance from the faces to correspond
with the thickness of ring plates which I employ to bear against the
tire and the rim on both sides, the ring plates being fastened in position
by bolts with rivet heads, the rivet bolts, or they may be cottars, passing
through both ring plates and the rim. The inner edge of each ring
plate forms a projection to take over the inner periphery of the rim.
By this means the tyre is clamped to the rim by the lips of the rings
and effects a binding action between the two supplemented by the
rivets. The contact of bearing surface of the rim and of the tire in this
mode is unbroken and produces great solidity.
The accompanying Drawings illustrate my Invention. Figure 1 shows
a is the
a portion of the solid metal flanged wheel first referred to.
tyre in a piece with the rim b and spokes or centre c.
The second part of the Invention is shown in Figure 2, which is a
part of a railway or flanged wheel, in which a is tire; b, the rim ; c, the
3.

page_text: centre; d, the outer faced lip on the inner periphery of the tire; e, the
inner faced lip; f, the projection on outer face of rim; g, lip on outer
periphery of rim; and the screw bolt, the point or end of which takes
in a hole in the inner periphery of the tire as mentioned.
The third part of my Invention is illustrated at Figure 3, which is
also part of a railway or flanged wheel. a is the tire; b, the rim; c, the
centre; d, the outer face lip of the inner periphery; g, the inner faced
lip of the same into the grooves of which the lips i, i, of the ring
plates j, j, take; is the rivet, or it may be a cottar of rectangular
form in cross section, as in detail view, Figure 4; k, k, are the inner
periphery ring plate lips to bear upon and clamp the rim and the tire
into close contact.
Figure 5 represents a portion of a wrought-iron railway or flanged
wheel in which the tyre is held to the centre c with ring plates j, j,
having annular lips to take into it as in the last described method. The
centre chas portions slotted out, as shown at 1, for the reception of the
rivets or cottars to secure the ring plates, the object being to fasten
the tyre and prevent its leaving the body of the wheel in the event of
the tyre becoming loose or broken; also to obviate the necessity of
"setting up" the tyre to the rim for the purpose of securing it or
cutting it to remove same for the purpose of re-tyreing or otherwise in
case of necessity.
In witness whereof, I, the said Charles Llewellyn Light, have here-
unto set my hand and seal, this Twenty-eighth day of February,