AN IMPROVED METHOD OF FASTENING THE TYRES ON RAILWAY WHEELS BY MEANS OF A METAL RING CAST BETWEEN TYRE AND CROWN
Year: 1877

page_text: LETTERS PATENT to Otto Herrmann Emil Kaselowsky, of Berlin, Prussia, for
the Invention of "AN IMPROVED METHOD OF FASTENING THE TYRES ON
RAILWAY WHEELS BY MEANS OF A METAL RING CAST BETWEEN TYRE AND
CROWN."
Sealed the 20th July 1877, and dated the 23rd January 1877.
PROVISIONAL SPECIFICATION left.by the said Otto Herrmann Emil Kasel-
owsky at the Office of the Commissioners of Patents on the 23rd January
1877.
"
OTTO HERRMANN EMIL KASELOWSKY, of Berlin, Prussia. AN IMPROVED METHOD
OF FASTENING THE TYRES ON RAILWAY WHEELS BY MEANS OF A METAL RING CAST
BETWEEN TYRE AND CROWN."
The numerous railway accidents arising from the breaking of wheel tyres have
made it desirable to fasten the tyres in such a way that they still cling to the wheel
whenever by any influence they become defective, and that single pieces are not
flung away, whereby the most serious accidents are occasioned.
Of the many constructions that have been generally adopted the Mansell ring is
perhaps the most recommendable, but on account of the use of bolts it does not
obviate all danger, as both are liable to fly off and loosen the ring; besides, the cost
of such a wheel is considerably higher, and the Mansell ring is difficult to be applied
to existing wheels. .
My improved manner of fastening obviates bolts, keys, or screws, renders a
loosening of the tyre generally impossible, is cheaper, and may be applied with little
expense to all existing wheels.
To carry out my Invention I cut a groove of, dovetail, or any other suitable
section, into the outer circumference of the wheel crown, and a similar groove into
the inner circumference of the tyre, so that, after driving the heated tyre in the
usual way on the wheel, they form a hollow. This space I fill out with any metal
or alloy by pouring it through holes bored for this purpose, or in old wheels through

page_text: the screw bolt holes. The ring so formed will hold the tyre upon the crown with
perfect safety, even if the groove should not fit exactly, or the metal should have
filled the space but imperfectly.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Otto Herrmann Emil Kaselowsky in the Great Seal Patent Office on
the 21st July 1877.
OTTO HERRMANN EMIL KASELOWSKY, of Berlin, Prussia. "AN IMPROVED METHOD
OF FASTENING THE TYRES ON RAILWAY WHEELS BY MEANS OF A METAL RING CAST
BETWEEN TYRE AND CROWN."
The numerous railway accidents arising from the breaking of wheel tyres have
made it desirous to fasten the tyre in such a way that they still cling to the wheel
whenever by any influence they become defective, and that single pieces are not
flung away, whereby the most serious accidents are occasioned.
Of the many constructions that have generally been adapted the Mansell ring is
perhaps the most recommendable, but on account of the use of bolts it does not
obviate all danger, as bolts are liable to fly off and loosen the ring; besides, the cost
of such a wheel is considerably higher, and the Mansell ring is with difficulty applied
to existing wheels.
My improved manner of fastening, herein described and represented, obviates all
bolts, keys, or screws, renders a loosening of the tyre quite impossible, is cheaper,
and may be applied with little expense to all existing wheels.
Fig. I. shows a section of the fastening for strong locomotive wheels; Fig. II. is
one for car wheels; Fig. III. is a side elevation of a wheel.
A is the tyre; B, the rim of the wheel; C is a metal ring of dovetailed, or any
other convenient section, catching by reason of its form into the tyre, as well as
into the rim of the wheel; the dimensions of this ring are chosen in such a manner
that the metal by cooling shrinks in the direction of the radius, thereby drawing
tyre and rim tightly together. After having turned a groove into the tyre and into
the rim, of a form corresponding to the intended form of the metal ring, and having
driven the heated tyre upon the wheel in the usual way the metal or the alloy
intended to form the ring C is cast into the wheel through the openings D, D, D.
In old wheels the filling may be effected through the holes which were intended or
used for screw bolts.
The material for the ring may be gun metal, white metal, or any other alloy or
metal of a high or low degree of fusibility or hardness, so that whenever the tyre is
to be renewed the metal may be melted out, or the tyre may be cut down on the
lathe and the ring turned out.
As the ring is surrounded on all sides by a solid material a loosening is quite
impossible, and even when the metal should have filled the space in the wheel but
imperfectly, or when the two hollows in tyre and wheel should not fit exactly, the
ring nevertheless will hold with perfect safety.
To make sure of a perfect running of the liquid metal the form of rings as
indicated by dotted lines in Fig. II. is preferable, where the wholly closed central
ring is substituted by the two rings on both sides of the wheel, which remain
outside partly visible. For rings of this and similar form the grooves may be cut
into existing wheels of the rolling stock, and in case of need without removing
the tyres.
Having now described and particularly ascertained the nature of my Invention,
and the manner in which the same is or may be used or carried into effect, I
would observe in conclusion that I consider to be novel and original and therefore
claim as my Invention, the method of fastening tyres on wheels by one or more cast

page_text: metal rings of dovetailed, hook formed, or any other suitable section, whereby the
use of any bolts or screws is dispensed with, in the manner and for the purpose set
forth.
In witness whereof, I, the said Otto Herrmann Emil Kaselowsky, have here-
unto set my hand and seal, this Twenty-fourth day of May, in the year of
our Lord One thousand eight hundred and seventy-seven.
EMIL KASELOWSKY. (L.S.)