Improvements in the Construction of Wheels for Steam Road Rollers, and other Machines and Engines.
Year: 1897

page_text: Improvements in the Construction of Wheels for Steam Road Rollers,
and other Machines and Engines.
I, THOMAS CLIFFORD AVELING, of 41, Ryland Road, Edgbaston, in the City of
Birmingham, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to the construction of wheels for road rollers and other
heavy engines and machines, and has for its object the building up of such wheels
so that their rims or outer circumferences can be renewed, when badly worn, in
a very simple and inexpensive manner. One of the important characteristics of
the invention is that the construction, although allowing of the wheel circum-
ference being renewed, is such as not to weaken its actual strength when the rim
is in position and the wheel complete.
A wheel built up according to this invention consists of a solid metal hub or
centre and a solid metal rim or circumference, connected, in a particular manner,
by stout metallic discs through the intervention of cross bolts. The rim or
circumference has a flat broad tread and from its inside face projects a circular
web or flange, its section resembling somewhat the letter T the vertical stem of
which is very short and represents the web or flange before mentioned. This
concentric web or flange is not plain sided: those parts being formed undulatory
or of a zig-zag figure.
The outer extremities of the side faces of the hub are also of an undulatory or
zig-zag formation, or are formed with recesses or projecting parts, for the purpose
of making a rigid connection with the discs.
These latter, which are two in number and which form a connection between
the hub or wheel centre and the rim or wheel circumference, are made from stout
steel plates by a stamping process, their outer and inner edges being shaped,
for a short side length, of a zig-zag or undulatory cross sectional figure similar to
those like shaped parts of the hub and the wheel circumference, as before described,
and these irregular parts of the discs are placed so as to fit within the irregular
shaped parts of the hub of the wheel and circumference, for putting together rigid
the component parts of the wheel; the said discs forming the middle part or sides
thereto.
The discs, as aforesaid, are coupled in their respective positions by cross bolts,
which may or may not pass through the web of the rim and the outer parts of the
wheel hub; their purpose being purely to hold the irregular sectioned parts of
the discs in engagement with the irregular sectioned parts of the wheel's hub and
rim.
Such a connection of the rim and the hub as described is a very rigid one,

page_text: inasmuch as all radial strains emanating from the driving shaft and converging
from the wheel's hub through the discs to the circumference are borne by the
irregular sectioned parts, and therefore the strength of the wheel is not dependent
upon bolts and nuts.
It is only necessary to uncouple the discs to be able to take away the wheel 5
rim and substitute another.
Improvements in the Construction of Wheels for Steam Road Rollers,
and other Machines and Engines.
I, THOMAS CLIFFORD AVELING, of 41, Ryland Road, Edgbaston, in the City of
Birmingham, Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
-
This invention relates to the construction of wheels for road rollers and other
heavy engines and machines, and has for its object the building up of such wheels
so that their rims or outer circumferences can be renewed when badly worn in
a very simple and inexpensive manner. One of the important characteristics of
the invention is that the construction although allowing of the wheel circum-
ference being renewed is such as not to materially weaken its actual strength
when the rim is fixed in position and the wheel complete.
A wheel built up according to this invention consists of a solid metal hub or
centre, a solid metal rim or circumference, and stout metallic discs, the said hub
and rim and also parts of the discs adjacent thereto being formed corrugated,
undulated, or of a zigzag figure, to fit one into and upon the other, and these discs
are clamped together transversely or crosswise by screw bolts.
The invention will be better understood by reference to the annexed sheet of
drawings, which clearly illustrates the parts of a wheel of a steam road roller
and the manner in which these parts are rigidly connected and held. In the said
sheet Fig. 1 represents a side elevation of the wheel with parts abounding the rim
and the hub broken in section to illustrate the corrugated faces of those particular
parts. Fig. 2 shows a cross section through the axis of the wheel Fig. 1, and
shows how the corrugated discs fit upon the like-shaped surfaces of the wheel's
rim and hub, and how the said discs are clamped together or braced by cross bolts.
Fig. 3 is a section on the dotted line F through the corrugated portion of the
wheels rim and the discs abounding its sides, and Figs. 4 and 5 show slight
modifications of the fitting of the discs to the wheels rim in similar section to the
particular part of Fig. 2.
In describing the invention in connection with the sheet of drawings, a² is the
solid metal hub or centre and a³ is the solid metal rim or circumference of the
wheel a, and c, d, are the stout metal discs by which the said hub and rim are
connected. The rim or circumference a³ has a flat or fluted tread a', and from its
inside face a projects a circular web or flange a", the section of the said flange
resembling somewhat the letter T, the stem of the said letter, which is a short
one, representing the web or flange a before mentioned. This concentric web or

page_text: flange is of a corrugated or undulatory formation upon its sides e, e, as clearly
shown in Figs. 1 and 3, and the inside face of the tread part of the rim is, prefer-
ably, slightly coned towards the said web.
The outer extremities g, g², of the sides or faces of the hub or wheel centre a³
are also corrugated or of an undulatory formation, as clearly shown at g³ Fig. 1,
or are formed with recesses and projecting parts of an undulating character, plain
and slightly coned bosses, g, g being formed concentric with the axle hole go for
constituting abutments for the inside edges of the discs d.
These latter, which form the connection means between the hub or wheel centre
and the rim or wheel circumference, are made from stout steel plates by a stamp-
ing process, their outer and inner edges c², c³, d², d³, being shaped, for a short side
length, of a corrugated or undulatory cross sectional figure, similar to those like
shaped parts of the hub and wheel circumference before described, the said corru-
gations of the discs being, preferably, as shown in the drawings. These corrugated
or irregular parts of the discs are fashioned so as to fit tightly the corrugated parts
of the hub and wheel circumference, for putting together rigid the component
parts of the wheel, and they form the middle parts or sides thereto.
The discs c, d, are coupled in their respective engaging positions with the wheel
hub and circumference by cross bolts j,, but these cross bolts do not take any
radial strain whatsoever, but simply couple up and hold the two discs with their
corrugated parts engaging the corrugated parts of the hub and circumference,
and with their centre and boundary edges mm² abutting against the bosses and
faces, 9, 9, and . It will be seen from the drawings that the holes in the discs
wherethrough the bolts pass are clearance ones, it being one of the principal
features of the invention not to depend upon any bolts for taking the strain
between the wheel's hub and its circumference, this being left to the discs and
being borne by the corrugated or irregular sectioned parts.
In Fig. 4 the abutment of the boundary edges of the discs is taken from the
faces of the wheel rim a and is borne upon the rounded corners m² of the
web a, whilst in Fig. 5 ring flanges o, o, are formed at the boundaries of
the discs c, d, which give a broader bearing surface of the said boundaries of the
discs upon the faces a³.
As before set forth the principal object of the invention is to renew the rim of
the wheel when it is worn, and it is obvious that to do this according to the
arrangement set forth it is only necessary to uncouple the discs by unlocking and
unscrewing the bolts which hold them.
If necessary a lining of 'lead or other suitable semi-yielding material may be
interposed between the corrugated surfaces of the discs and the hub or circum-
ference of the wheel.
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:-
First. Building up a wheel of a road roller or other heavy engine or machine of
sectional parts comprising a corrugated or zigzag solid metal hub or centre, a
solid metal rim or circumference having corrugated or zigzag faces or parts upon
it, and stout metal corrugated discs, the said hub and rim being connected and
attached rigidly the one to the other through the said discs being coupled up
and the various corrugated parts engaging, substantially as described.
Second. In combination in a heavy wheel, a solid metal rim or circumference a³
having a corrugated web or flange a, a solid metal hub a² having corrugated
sides, metal discs c and d having corrugated parts to fit the corrugations of the
hub and rim, and means for coupling the discs together with the corrugations
engaging, substantially as described.
Third. In a wheel as claimed in the preceding claim arranging the abutting
surfaces of the inner and outer edges of the discs, and the hub, and rim, coned

page_text: or inclined, and pulling the said parts onto the abutments by cross bolts having
clearance holes in the discs through which they pass, substantially as set forth.
Fourth. In a wheel as claimed in the second claim, forming on the boundaries
of the discs ring abutment flanges o, o², for the purpose described and shown in
Fig. 5.
this in day or April 1890.
W. P. THOMPSON & Co.,
11, Burlington Chambers, New Street, Birmingham,
Also of Liverpool, London, and Manchester,
Patent Agents for the Applicant.