Year: 1896

page_text: Date of Application, 3rd Nov., 1896-Accepted, 23rd Jan., 1897
ашротошопе сотргээс ду100 101
A. communication from JONATHAN BURNS WEST, of Rochester, in the County of
Monroe, State of New York, United States of America, Manufacturer.
I, ALFRED JULIUS BOULT, of 111 Hatton Garden, in the County of Middlesex
Chartered Patent Agent, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
This invention relates to an improvement in compressed tyres for railway, car,
or other wheels, in the construction of which the rolled flanged tyre is compressed
or upset upon the turned wheel-center, being thereby trued on the outside and
secured in place by flanges on the interior, the resulting wheel being thereby
cheapened and rendered more durable.
In the accompanying drawings,
Fig. 1 is an elevation of a railway or other wheel containing this invention, with
a diagram of the compressing machine, and
Fig. 2 is a radial section through the compressed tyre and a portion of the
wheel center.
It has been ascertained by practical trials that rolled tyres for car and other
wheels can be upset or compressed at ordinary temperatures upon the wheel-
centers by the suitable application of hydraulic pressure, such tyres being thereby
secured firmly in place with the result of securing a cheaper and more durable
wheel. In the practice of this invention, a wheel center, W, is taken of any
ordinary or preferred construction or material, and, the outer surface being trued
in a lathe, the rolled tyre T is applied to it, which is upset or compressed so as to
shorten its circumference by hydraulic pressure applied radially to the tread in the
plane of the wheel by suitable mechanical means. The pressure is applied to
the exterior surface of the tyre by suitably formed blocks, adapted to fit the shape
of the tread and flange, which blocks are forced inward by hydraulic pistous or
plungers. The blocks are so arranged as to cover the entire surface of the tyre at
the end of the compressing operation. In practice it has been found that the
amount of pressure required to upset an ordinary rolled steel tyre of usual
dimensions is from 3000 to 5000 tons. In ordinary practice my correspondent
employs eighteen radially arranged plungers or cylinders C, each of about one
hundred square inches area, all connected by suitable piping with a hydraulic
pump by which the pressure is carried to upwards of five thousand pounds to the
square inch. The ring R which sustains the cylinders is 8 inches by 12 inches,
and about 8 feet in diameter. The radial blocks B are connected together by
circular segments, S, fitted in grooves so as to secure an equable inward movement.
The tyre T is rolled with the internal flange F on the outside of the wheel, and it
also has an internal rim or flange on the inner side, which flange is formed by
the compression of the tyre, forcing the metal over the edge of the center W.
The tyres are trued up on the center by the compression,-the ordinary rolled tyre
may be placed on the center without turning its inner surface and the subsequent
operation renders the tread true and concentric,-the center being bored after the
tyre has been compressed. The tyre may be turned on the tread if desired, but
this invention saves the expense of this operation, and provides also a better

page_text: wearing surface, since the tread remains with the hard skin formed on it in the
rolling mill. These improved wheels are therefore cheaper and more durable than
those of any other construction now known to me.
It will be understood that this invention may be applied to securing the tyres on
locomotive driving wheels. On tyres for 36 inch wheels, the amount of compression
is sufficient to make the internal flangefths or th inch thick.
In order to prevent the tyre from leaving the wheel on account of a break while
running, the wheel-center is provided with one or more suitable shoulders, and one
of the flanges is bent inward over it to form the lip l, which engages with the
shoulder. This operation may be performed by any suitable mechanism, the lip
may be rolled, compressed or otherwise bent inward. This construction effectually
prevents the tyre coming off the wheel, even if it should break clear across.
Having now particularly described and ascertained the nature of my said inven-
tion as communicated to me by my foreign correspondent and in what manner the
same is to be performed, I declare that what I claim is :-
1. The herein described manufacture of car or other wheels consisting of a trued
metallic center having a rolled flanged tyre compressed thereon provided with an
internal rolled flange on the outside of the center and with an internal flange on
the inside of the same formed by the compression of the tyre by radially arranged
hydraulic cylinders acting in the plane of the wheel, substantially as described.
2. The herein described improved tyred wheel, consisting of a suitable wheel-
center and a continuous rolled flange tyre, provided with internal flanges on each
side of the center and attached to the center by compression, one of said flanges
being bent over a shoulder on the center, substantially as described.
3. The combination with the shouldered wheel center W, of the rolled flanged
tyre T, compressed on the center and having the internal flanges F and f, and the
lip engaging with the shoulder, substantially as described.
Dated this 3rd day of November 1896.
BOULT & WADE,
Agents for the Applicant.