Improvements in Wheels applicable to Gearing, Locomotives, Vehicles for use on Railways, Tramways, Common Roads, and the like purposes.
Year: 1892

page_text: Date of Application, 1st Sept., 1892
Complete Specification Left. 1st June, 1893-Accepted, 8th July, 1893
PROVISIONAL SPECIFICATION.
Improvements in Wheels applicable to Gearing, Locomotives,
Vehicles for use on Railways, Tramways, Common Roads, and
the like purposes.
I CHARLES STAMPER DIXON of 96 Cobden Street Wednesbury Pattern Maker
do hereby declare the nature of this invention to be as follows:-
My invention relates more particularly to wheels made of cast metal with arms
such wheels being cast either with plain, toothed, or flanged rims or tyres.
The object of my invention is to cast such wheels free from defects arising from
unequal contraction when cooling and at the same time to secure greater strength
and elasticity to the wheels when in use.
I effect this object by constructing the arms of my improved wheel which may
vary in number in a twisted or helical form that they join the rim or tyre at an
angle to the axsis of the wheel as herein described and illustrated in the accom-
panying sheet of drawings.
By this arrangement the connections between the boss and the rim or tyre of the
wheel is more evenly distributed and the support which the rim or tyre receives
from this form of spoke or arm is increased more than would be the case with
ordinary spokes or arms. The spokes or arms may vary in length and angle or
may be made either in a straight or curved line from the boss to suit special
conditions of working.
The arms and the rims of wheels as herein described may be constructed with or
without ribs or webs for strengthing the same and the boss of the wheel may be
set back from the horizontal face of the wheel or otherwise as required.
Wheels constructed on this principle with flanged rims or tyres cast upon them
may when such flanged rims or tyres have become worn or defective from constant
use or other causes have their peripheries turned for the reception of a new rim
or tyre which may be shrunk or otherwise fastened thereon.
Dated 20th day of August 1892
CHARLES STAMPER DIXON.
COMPLETE SPECIFICATION.
Improvements in Wheels applicable to Gearing, Locomotives,
Vehicles for use on Railways, Tramways, Common Roads, and
the like purposes.
I CHARLES STAMPER DIXON of 96 Cobden Street, Wednesbury, in the County
of Stafford, Pattern Maker 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 improvements on all classes of wheels, pulleys, or the
like, but more particularly to those which are capable of being cast or formed.
in moulds and which are used for transmitting power from one place to another
such as pulleys and spur wheels; wheels for locomotives or other vehicles
comprising the rolling stock of railways or tramways and wheels for use on
common roads.
It is well known that wheels or pulleys when made of cast metal are during
casting or more particularly during the cooling of the metal in the mould liable
to suffer in many ways by reason of the unequal contraction of the various
members of which they are composed. This unequal contraction chiefly arises
from one portion cooling quicker than the other with the result that in the case
of wheels, or pulleys the arms break away from the rim of the wheel or the rim
itself is cracked. Now the object of my invention is to avoid the defects arising

page_text: from unequal contraction of the parts of pulleys, wheels or the like and at the
same time to secure strength and elasticity to the wheels when in use.
To this end my invention consists essentially in constructing the arms of wheels,
or the like of a twisted or helical form so that their outer ends will join the
rim or tyre at an angle to the axis of the shaft upon which the wheel is fixed
or of which it forms a part, whilst the inner ends may join the boss of the wheel
either at an angle to the shaft or parallel or at right angles thereto.
In order that my invention may be readily understood I have hereunto appended
a sheet of drawings showing the manner in which I construct the arms though
I wish it to be carefully noted that these may be departed from in the details of
construction without in any way receding from the main features of the invention.
In the drawings
Fig. 1 is an elevation of a pulley formed with arms running in a radial line from
boss to rim-one edge being in advance of the other, and Fig. 2 plan showing the
manner in which the arms join the rim.
In these A is the boss, hub or eye of the pulley and B. the rim tyre or face.
The arms C, of which there may be any number, are made of a twisted or helical
form that is to say one edge c of the arm is made in the pulley shown to radiate
from the boss A to the rim B a little in advance of the other edge so that the
outer ends of the arms may join the rim at an angle to the axis of the shaft upon
which the pulley is fixed as shown in Fig. 2. In this case also the roots of the
arms join the boss at an angle to the shaft though it must be understood that
these may join the boss in a line parallel with the shaft or at right angles thereto
and also that the angle made may be greater or less to suit special circumstances.
The angle which the outer ends of the arms makes with the rim may also be
greater or less than that shown since the principal feature of my invention consists
in making the arms to join the rim at an angle other than a right angle and also
not parallel to the shaft. Instead of the edges of the arms radiating from the boss
of the pulley they may form a curve as shown in dotted lines at D.
It will thus be seen that by this arrangement the connection between the boss
and the rim or tyre of the wheel is more evenly distributed; that the support
which the rim receives from this form of spoke over the ordinary spokes or arms
is greatly increased; that the arms have greater elasticity both in the direction
of their length and also in the direction of their depth from side to side of the
pulley whilst at the same time greater strength is ensured. If desired the arms
and the rims of wheels or pulleys as herein described may be constructed with
ribs or webs for strengthening them as is now the case with wheels and pulleys
of a heavy class and the boss may be set back from the face of the wheel or
otherwise as may be required. Then again wheels constructed in the manner
described and with flanged rims or tyres cast upon them may have their peripheries
returned in the ordinary way when they have become worn down by use, or be
fitted with new tyres.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. Wheels, pulleys, or the like constructed with twisted or helical arms the
outer ends of which join the rim or tyre at an angle to the axis of the shaft on
which they are mounted substantially, as and for the purposes described.
2. Wheels, pulleys or the like constructed substantially as and for the purposes
herein described with special reference to Figs. 1 and 2.
Dated this 20th 1-
1000
Per pro EMMOTT & CO., LIMITED,
Robert Wood, Secretary,
2, New Bridge Street, Manchester, and 85, Strand, London,
Agents for the Applicant.