Improvements in Car Wheels.
Year: 1895

page_text: Date of Application, 31st Dec., 1895-Accepted, 1st Feb., 1896
Improvements in Car Wheels.
J, WILLIAM JOHNSTON TAYLOR, a citizen of the United States, residing at
Bound Brook, in the County of Somerset and State of New Jersey, Engineer,
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:—
My invention has relation to the manufacture of a car wheel known as a steel tire
welded wheel, that is, a steel tire with a cast iron centre welded to the tire; and it
relates particularly to the construction or form of the tire, whereby a far better
interlocking of the same with the cast iron centre is secured and a maximum
mileage or service of the wheel is obtained with a minimum weight of tire and with
entire safety in use to the end of the life of the tire of the wheel.
Hitherto it has been customary to make these wheels with two forms of tires,
one known as the locking and the other as the non-locking section. The former
may be described as a tire having inwardly projecting ribs or side flanges with a
cast iron centre fused or welded thereto, but such a wheel possessed serious
disadvantages, in that if the steel tire was entirely worn through to the iron under
the tread the flange was liable to break off at the point of union of one with the
other. In the latter section, the inner periphery of the tire was usually slightly
concaved about the centre and therefrom generally merging into flat walls, but the
objection to such section is that there was no interlocking between the steel rim or
tire and the cast iron centre, and hence in case of imperfect weld, fracture or
cracking of the tire in cross-section, there was nothing to hold it from flying off
from the centre. In addition to this, practically the same objection as to the
safety of the flange was encountered when the tread was entirely worn out, only
in such case the seam or weld between the tire and the centre was horizontal
instead of vertical.
The principal objects of my invention are first, to overcome the above mentioned
disadvantageous features by constructing a steel tire welded wheel, in which the
tire is made with an inner interlocking rib for securing the same to the centre or
body of the wheel when cast in addition to welding or fusing of the same, so that
in the wear of the rim even to the body, the flange will be firmly interlocked
thereto and safe even with imperfect welding and the tire entirely worn out at
the throat, due to the proper location of the interlocking rib of the tire of the
wheel.
My invention stated in general terms, consists of a car wheel constructed and
arranged in substantially the manner hereinafter described and claimed.
The nature, characteristic features and scope of my invention will be more fully
understood from the following description taken in connection with the accompanying
drawings forming part hereof; and in which
Figure 1, is a sectional view of the rim of a wheel, showing the well-known
imanner of constructing a locking steel tire welded car wheel, and the dotted lines
indicating respectively in the wear of the tire in the direction of the body, the safe
and unsafe limits of such a wheel.
Fig. 2, is a similar view of a plain or non-locking section, showing by dotted
lines in the wear of the tire in the direction of the body of the wheel, the safe and
unsafe limits thereof; and
Fig. 3, is a similar view of a car wheel, embodying the particular features of
my invention, with the tire of the wheel provided with a single interlocking rib

page_text: established with the body of the wheel by welding or fusing cast iron therewith so that
the entire steel tire may be worn to the body and the flange worn also to the extent
indicated by the dotted lines and still be safe and substantial, due to the support
which is afforded by the particular location and arrangement of the rib of the tire
welded to the body of the wheel, to not only interlock the tire section, but also the
flange even when the tread is worn out.
By
Referring to the drawings a, in Fig. 3, represents the body of the wheel of
preferably cast iron. is the tire composed preferably of steel, as well as the
flange and d, is the inner interlocking rib, which is formed integral with said tire
and preferably of the type or form and located as illustrated in Fig. 3. The tire is.
heated to proper temperature for fusing or welding to cast iron or molten steel and
introduced in the mould just before pouring the centre in the usual manner.
this construction of a tire welded wheel, the life of the same is prolonged until the
tire is entirely worn out as to the tread, owing to the special construction or form
and particular location of the interlocking rib d, as illustrated in Fig. 3, whereby
the flange is made absolutely secure and safe even with the tread worn to the iron
body of the wheel. This is not the case with any of the other tire-sections as
hitherto made and particularly such as illustrated in Figs. 1 and 2, of the drawings.
Morcover, the tire of my invention can be more closely worn down with safety
than was possible with wheels of the ordinary type, for example, such as
illustrated in said Figs. 1 and 2, of the drawings. It will be apparent to
those skilled in the art to which my invention appertains that in a wheel
constructed according to my invention there is a far greater saving in the
amount of steel to secure a given amount of service as compared with those
hitherto employed.
With reference to Fig. 3, if it is assumed that the limit of safety in such a
tire-section is represented by the dotted lines lettered g, it will be seen by
comparison that such limit in the old sections illustrated in Figs. 1 and 2, are
fully reached when the tire is reduced by wear and turning for truing up, by
the dotted lines lettered e, and the absolutely unsafe limits of such sections by the
dotted lines, with the tread entirely worn out in the latter instance as it is
left without sufficient support for the flange to prevent breaking off thereof,
while in the wheel of Fig. 3 under like conditions there is ample strength
and substantial support for the flange and a safe use will thereby be permitted,
owing to the proper distribution of a less quantity of steel remaining in
conjunction with the interlocking rib of the tire with the body of the wheel
welded thereto.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is :-
A car wheel provided with a steel tire having an internal projecting rib inter-
locked between two walls of a cast iron or cast steel body or centre welded or
fused to said tire and said rib being located in proximity to the flange side of the
wheel, whereby in connection with said body or centre a substantial support is
established and maintained for the flange of said tire to the wear of the
tread thereof to the union of the same with said body or centre of the wheel,
substantially as described.
Dated, at Philadelphia, Pa., this 5th day of December AD 1805
WILLIAM JOHNSTON TAYLOR.