IMPROVED METHODS FOR SECURING TYRES TO THE WHEELS OF LOCOMOTIVE ENGINES, TENDERS, CARRIAGES, AND WAGGONS
Year: 1876

page_text: LETTERS PATENT to John Stephenson, of 29, East Mount Rond, York, in the
County of Yorkshire, Engineer, for the Invention of "IMPROVED METHODS
FOR SECURING TYRES TO THE WHEELS OF LOCOMOTIVE ENGINES, TENDERS,
CARRIAGES, AND WAGGONS."
Scaled the 21st July 1876, and dated the 13th May 1876.
PROVISIONAL SPECIFICATION left by the said John Stephenson at the Office
of the Commissioners of Patents on the 13th May 1876.
JOHN STEPHENSON, of 29, East Mount Road, York, in the County of Yorkshire;
Engineer. "IMPROVED METHODS FOR SECURING TYRES TO THE WHEELS OF Loco-
MOTIVE ENGINES, TENDERS, CARRIAGES, AND WAGGONS."
In order to prevent a tyre from flying off or leaving the wheel in case of fracture of
the tyre, or becoming loose from expansion, or from fractured bolts, I adopt the follow-
ing means I turn a groove in the outer rim of the wheel at an oblique angle with
the outer surface of the wheel, and a corresponding groove in the tyre at an oblique
angle and immediately opposite, so that when the tyre is in position a space is left in
the wheel and tyre, of a diamond, lozenge, or other form. I then make a split steel or
iron ring or several segments of nearly the same section as the space in the wheel
and tyre but less in diameter than the bottom of the groove in the wheel. I then
spring the ring over the wheel into the groove (or place the segments) even with the
surface of the wheel. I then contract on the tyre in the usual way, and force out the
steel ring or segments (by set bolts in the rim of the wheel) into the corresponding
groove of the tyre to about one-half the thickness of the ring or segments, when
The wheel and tyre are locked together effectually preventing any part of the tyre
leaving the wheel under any circuinstances of fracture or loose tyre. In case of the
"lipped" tyre I employ one steel ring or segments but in case of a plain tyre 1
employ two steel rings or several segments placed at opposite angles. I also make
a split steel or iron ring larger in diameter than the wheel, and by turning off the
angle to form an inclined plane. The tyre ("lipped ") is forced over the ring and
locked to the wheel without the use of bolts.
The Drawing which forms part of this my Provisional Specification is intended
to illustrate the Invention, as will be readily seen.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said John Stephenson in the Great Seal Patent Office on the 11th November 1876.
JOHN STEPHENSON, of 29, East Mount Road, York, in the County of Yorkshire,
Engineer. "IMPROVED METHODS FOR SECURING TYRES TO THE WHEELS OF Loco-
MOTIVE ENGINES, TENDERS, CARRIAGES, AND WAGONS."
This Invention has for its object improvements in the wheel tyre fastenings of
locomotive engines, tenders, carriages, and wagon wheels. In order to prevent a
tyre leaving the wheel in case of fracture in the tyre, or becoming loose on the wheel
from expansion, fractured bolts, or other cause, 1 adopt the following means :-
I turn a groove in the outer rim of the wheel at an oblique angle with the outer
surface of the wheel, and a corresponding groove in the tyre immediately opposite,
so that when the tyre is in position a space is left in the wheel and tyre of a
diamond, lozenge, or other form, I then make a split steel or iron ring, or several
segments of nearly the same section, but less in diameter than the bottom of the
groove in the wheel. I then spring the ring over the wheel into the groove (or
place the segments) even with the surface of the wheel. I then contract on the
tyre in the usual way, and force out the steel ring or segments (by set bolts in the
rim of the wheel) into the corresponding groove of the tyre to about one-half the
thickness of the ring or segments, when the wheel and tyre are locked together,
effectually preventing any part of the tyre leaving the wheel under any circum-
stances of fracture or loose tyre. In case of the "lipped" tyre I employ one steel
ring or segments, but in case of a plain tyre I employ two steel rings or several
segments placed at opposite angles. I also make a split steel or iron ring larger in
diameter than the wheel, and by turning off the angle to form an inclined plane.
The tyre (lipped) is forced over the ring and locked to the wheel without the use
of bolts.
Figure 1 shows section of plain tyre A, with rings C, C, forced out into the tyre
by set bolts D running round the rim of the wheel.
Figure 2 shows a lipped tyre forced over the spring ring C, and thereby the tyre
A is locked to the rim of the wheel B.
Figure 3 shows the ordinary lipped tyre, with one lock ring C forced out into
the tyre A.
Figure 4 shows the ordinary lipped tyre, with ring C laid in the rim of the wheel
ready to be forced out, or for taking off the tyre.
Figure 5 shows a plain tyre A, with oblique grooves C, C, cut in the tyre A, and
rim of wheel B filled with steel or other metal run in in a molten state through
the rim of the wheel before the tyre is cooled.
Figure shows the ordinary lipped tyre with one groove C filled with steel or
other metal, as in Figure 5.
Figure 7 shows an improved form of lipped tyre, the inside of the rim of the
wheel being cut at an angle with the outside of the rim of the wheel, the groove in
the tyre being turned parallel, and the lip E of the tyre forced over against D whilst
the tyre is hot.
Figure 8 shows the lip E forced over against D.
Figure 9 shows the section of a plain tyre A, with dovetail cut in the tyre and
in the rim of wheel, leaving space C, which is filled in with steel or other metal in
a molten state.
In witness whereof, I, the said John Stephenson, have hereunto set my hand
and scal, this Eleventh day of November, in the year of our Lord One
thousand eight hundred and seventy-six.
JOHN STEPHENSON. (L.S.)