Improved Railway-car Wheel, applicable also for other purposes.
Year: 1890

page_text: Date of Application, 1st Nov., 1890
Complete Specification Left, 1st Aug., 1891-Accepted. 19th Sept., 1891
PROVISIONAL SPECIFICATION.
Improved Railway-car Wheel, applicable also for other purposes.
I, JOHN PITT BAYLY, of 18 Fulham Place, Paddington, in the County of
London, Patent Agent, do hereby declare the nature of this invention (a communi-
cation to me from abroad by William James Brown, of Momence, Illinois, U.S.A.,
Inventor) to be as follows:-
It is a well known fact that a breakdown of a car-wheel or axle and the conse-
quent wrecking of a railway train is in most instances caused by the tremendous
friction of the car-wheels on the rails while passing over a curve in the track,
because the wheels on the outer rail of the curve will have to travel a greater
distance than the wheels riding on the inner rail. This difference heretofore
necessitated a certain amount of sliding of the wheels on such rails, liable not only
to scale and break the rails, but also to exert upon the wheels and axle a severe
torsional strain, and upon the axle boxes and the truck-frame a heavy twisting force
more destructive thereto than any strain from other causes.
Now it is the object of this my invention to provide a car-wheel the rim of which
will revolve upon the hub independently of the rotation of the axle, whereby with
one of the two wheels mounted upon each axle thus constructed the car will move
over a curve with the same case as over a straight-line track, and with this object
in view ny invention consists of the novel devices and combinations of devices
hereinafter described.
The hub of the wheel is bored to fit the axle and to be rigidly mounted thereon.
This hub is provided in its periphery with a groove of convenient depth entirely
around it, and which groove has slanting sides. Around the hub is fitted an
auxiliary hub, having an inner groove of equal depth and width to the one in the
hub, also having inclined sides. This auxiliary hub is retained upon the inner hub
by means of a ring-plate, which is secured to the side of the hub and over the
joints of the auxiliary and inner hubs, by screws. The rim of the wheel is preferably
formed integral with the auxiliary hub, and a suitable web extends between them.
Suitable rollers are inserted within the rectangular and annular channel form
formed by the two grooves aforesaid.
tact.
For putting the wheel together all the rollers are first inserted into the groove
of the hub. Then the auxiliary hub is placed over these rollers, and finally the
ring-plate is secured by the tap-screws. These rollers will accommodate themselves
in their circular track not to touch each other, so as not to have any frictional con-
A wheel thus constructed will be complete in itself and can be mounted
upon any common car-axle. It is laterally as rigid as a solid wheel, while at the
same time the rim portion of the wheel will rotate upon the hub with the least
possible friction. The edges of the flanges and ring-plate of the hub and rim
without touching will form lap-joints that will exclude dust. One of two wheels to
each axle being thus constructed, the freedom of its rim to rotate independently of
the axle will compensate for any difference of track length each wheel may have to
follow while passing over a curve, and will thereby obviate all frictional and con-
sequent torsional and twisting and strains to the axles and truck-frames, whereby
not only a saving of power, but also of repairs necessitated from wear and tear, will
be attained and the usefulness of the running-gear of the cars will be prolonged
considerably.
This improvement will not only be advantageous for car-wheels, but also for
traction, wheels of agricultural machinery.
J. P. BAYLY,
Applicant.

page_text: COMPLETE SPECIFICATION.
Improved Railway-car Wheel, applicable also for other purposes.
1, JOHN PITT BAYLY, of 18 Fulham Place, Paddington, in the County of
London, Patent Agent, do hereby declare the nature of this invention (a com-
munication to me from abroad by William James Brown, of Momence, Illinois,
U.S.A. Inventor, and in what manner the same is to be performed, to be par-
ticularly described and ascertained in and by the following statement :--
It is a well-known fact that a breakdown of a car wheel or axle and the consequent
wrecking of a railway train is in most instances caused by the tremendous friction
of the car-wheels on the rails while passing over a curve in the track, because the
wheels on the outer rail of the curve will have to travel a greater distance than the
wheels riding on the inner rail. This difference heretofore necessitated a certain
amount of sliding of the wheel on such rails, liable not only to scale and break
the rails, but also to exert upon the wheels and axle a severe torsional strain, and
upon the axle-boxes and the truck-frame a heavy twisting force more destructive
thereto than any strain from other causes.
Now it is the object of this my invention to provide a car-wheel the rim of which
will revolve upon the hub independently of the rotation of the axle, whereby with
one of the two wheels mounted upon each axle thus constructed the car will move
over a curve with the same ease as over a straight-line track, and with this object
in view my invention consists of the novel devices and combinations of devices
hereinafter described and specifically claimed.
In the accompanying drawings,
Figure 1 represents an elevation, and
Figure 2 a transverse section through the centre line of my improved car-
wheel.
Corresponding letters of reference in both figures of the drawings designate like
parts.
A denotes the hub of the wheel, which is bored to fit the axle to be rigidly
mounted thereon. This hub is provided in its periphery with a groove having a
cylindrical bottom a, with slanting sides formed by annular flanges b and c, that on
their exterior edges are turned to have an offset or shoulder.
D is the rim of the usual shape for track-wheels, and E is an auxiliary hub
concentric with such rim and rigidly connected therewith by a web d and radial
ribs e.
This auxiliary hub E has a cylindrical bore f corresponding in width with
bottom a of the groove of hub A, and has a rigid flange g to one side, providing a
slanting shoulder and turned on its inner edges with an offset that coincides with
the offset of flange b, forming a lap-joint therewith. The side of the auxiliary
hub E opposite to flange y is recessed for the ring-plate h, fitted therein and secured
by tap-screws. This ring-plate h is so bored and turned that after being thus
secured it forms a slanting shoulder to bore F and a lap-joint with flange e, similar
to flanges band g. Between the cylindrical surfaces a and, the flanges b, c, and g
and the ring-plate h, are inserted a series of cylindrical rollers J, fitting snugly
between the surfaces a and f and having somewhat conical ends again fitting the
slanting shoulders formed by the flanges and ring-plate. For putting the wheel
together all the rollers J are first inserted into the groove a of hub A. Then the
hub E is placed over these rollers, and finally the ring-plate is secured by tap-
screws. These rollers J will accommodate themselves in their circular track not
to touch each other, so as not to have any frictional contact.
A wheel thus con-
structed will be complete in itself and can be mounted upon any common car-axle.
It is laterally as rigid as a solid wheel, while at the same time the ring portion of
the wheel will rotate upon the hub with the least possible friction. The edges of
the flanges and ring-plate of the hub and rim without touching will form lap-joints
that will exclude dust. One of two wheels to each axle being thus constructed,

page_text: the freedom of its rim to rotate independently of the axle will compensate for any
difference of track length cach wheel may have to follow while passing over a
curve, and will thereby obviate all frictional and consequent torsional and twisting
strains to the axles and truck-frames, whereby not only a saving of power, but also
of repairs necessitated from wear and tear. will be attained and the usefulness of
the running-gear of the cars will be prolonged considerably.
This improvement will not only be advantageous for car-wheels, but also for
traction, wheels of agricultural machinery.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
1. In a wheel, the hub A, having in its periphery an annular groove with a
cylindrical bottom and with flanges b and c, providing slanting sides to such
groove, and the rim D, having auxiliary hub E, with cylindrical bore f, rigid
flange, and ring-plate h, secured by screws i, both the flange and ring-plate h
providing slanting sides to bore f, and cylindrical rollers J, snugly fitting between
the surfaces a and f, and having conical ends shouldering between the slanting sides
thereof, substantially as set forth.
2. In a wheel, the hub A, having in its periphery an annular groove with a
cylindrical bottom a, and with flanges and c, providing slanting sides to such
groove, and the rim D, having auxiliary hub E, with cylindrical bore f, rigid
flange and ring-plate, secured by screws i, both the flange g and ring-plate h
providing slanting sides to bore, and the meeting edges of the several flanges and
ring-plate having offsets that form lap-joints with each other, and a series of cylin-
drical rollers J, having conical ends snugly fitting between the surfaces a and fand
shouldering between the slanting sides thereof, substantially as set forth.
Dated this 1st day of August 1891.
J. P. BAYLY
Applicant.