Year: 1887

page_text: Date of Application, 25th June, 1887
Complete Left, 24th Mar., 1888
Complete Accepted, 27th Apr., 1888
I ILLIUS AUGUSTUS TIMMIS of No. 2 Great George Street, Westminster S.W. in
the County of Middlesex Civil Engineer do hereby declare the nature of this invention
to be as follows:-
The objects of my Invention are to effect improvements in what are known as
spring wheels that is wheels in which springs are introduced between the boss and the
parts rigidly fixed to the Boss, and the tyre which runs either on the roadway or
railway.
With these objects in view I fix on the tyre any convenient number of blocks
made of cast or forged metal and of such a shape that they form supports to the
springs that are placed at various angles against them. These springs are by pre-
ference coiled steel springs. The other ends of the springs rest against the Boss of the
wheel and other parts of the wheel which are fixed to the Boss.
The springs thus placed take up and provide for the bearing and gravitating strains
of the axle and the load it carries and also the forward and backward movements of
the Locomotive (or other vehicle) whether it is running light or hauling or pushing a
load. I fix the springs to work in compression and fit them in position so that their
initial compression greater than their maximum reserve travel (or range) when
they are providing for any vertical or other strains or shocks by this means the springs
have always some initial compression upon them and never become loose or slack.
To this end it is preferable to use springs which have a curved diagram of compression
i.e. springs which compress through a less distance with each additional but equal
increase of load so that the reserve power which the springs exercise when any load or
strain comes on them (in addition to their initial compression) is given out through
diminishing ranges of compression.
There are many ways in which the springs may be placed to effect these objects
for instance.
-
First Three or more springs (I prefer to use at least five) may be placed between
the wheel boss and the tyre having their central axes in the radial lines from the
centre of the Boss. These are used only to take up the gravitating strains and
shocks.

page_text: Then I fix radial arms or spokes to the Boss which project towards the Tyre of any
suitable length and strengh and tied together with one or more rings or with a disc
or discs (one of which or both may be moveable), these spokes may be part of one of
the discs in which case they are called mid-feathers, and I place springs at any suitable
angle between the ends of these radial arms or spokes and the tyre suitable blocks
being fixed to the ends of the radial arms and to the Tyre for the ends of the springs
to rest against.
Two springs with their central axes in opposite directions, being fitted to each
radial arm, so that they provide for and take up any forward or backward strains or
shocks as well as vertical or gravitating strains and shocks.
Secondly-The springs above mentioned which have their central axis in the
radial line from the centre of the boss may be dispensed with and the whole of the
vertical and gravitating strains and shocks as well as forward and backward strains
and shocks caused by the forward and backward movement of the vehicle may be
taken up and provided for by springs fitted at suitable angles as herein before described,
between the radial arms and the tyre.
Any side strains are provided for either by the discs or radial arms having a vertical
or radial play between the skeleton blocks of the Tyre or in the case of a road
Locomotive between or outside the inner flange of the tyre.
Dated this 95th day of Tuna 1007

page_text: ww
and other Vehicles.
I ILLIUS AUGUSTUS TIMMIS of No. 2 Great George Street Westminster S.W. in
the County of Middlesex Civil 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:-
The objects of my Invention are to effect improvements in what are known as spring
wheels that is wheels in which springs are introduced between the boss and the parts
rigidly fixed to the boss and the tyre which runs either on the roadway or railway.
With these objects in view I fix on the tyre any convenient number of blocks made
of cast or forged metal and of such a shape that they form supports to the springs
that are placed at various angles against them. These springs are by preference coiled
steel springs. The other ends of the springs rest against the Boss of the wheel and
other parts of the wheel which are fixed to the Boss.
The springs thus placed take up and provide for the bearing and gravitating strains
of the axle and the load it carries and also the forward and backward movements of
the Locomotive (or other vehicle) whether it is running light or hauling or pushing a
load. 1 fix the springs to work in compression and fit them in position so that their
initial compression is greater than their maximum reserve travel (or range) when they
are providing for any vertical or other strains or shocks by this means the springs
have always some initial compression upon them and never become loose or slack.
To this end it is preferable to use springs which have a curved diagram of com-
pression i.e. springs which compress through a less distance with each additional but
equal increase of load so that the reserve power which the springs exercise when any
load or strain comes on them (in addition to their initial compression) is given out
through diminishing ranges of compression.
There are many ways in which the springs may be placed to effect these objects for
instance.
First Three or more springs (I prefer to use at least five) may be placed between
the wheel boss and the tyre having their central axes in the radial lines from the
centre of the boss. These are used only to take up the gravitating strains and
shocks.
Then I fix radial arms or spokes to the boss which project towards the centre tyre
of any suitable length and strength and tied together with one or more rings or with
a disc or discs (one of which or both may be moveable). These spokes may be part
of one of the discs in which case they are called mid-feathers. And I place springs
at any suitable angle between the ends of these radial arms or spokes and the tyre,
suitable blocks being fixed to the ends of the radial arms and to the Tyre for the ends of
the springs to rest against.

page_text: that they provide for and take any forward or backward strains or shocks
as well as vertical or gravitating strains and shocks.
Secondly-The springs above mentioned which have their central axes in the
radial line from the centre of the boss may be dispensed with and the whole of the
vertical and gravitating strains and shocks as well as forward and backward strains
and shocks caused by the forward and backward movement of the vehicle may be
taken up and provided for by springs fitted at suitable angles as herein before described
between the radial arms and the tyre.
Any side strains are provided for either by the discs or radial arms having a vertical
or radial play between the skeleton blocks of the tyre or in the case of a road
Locomotive between or outside the inner flange of the tyre.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a side elevation of my spring wheel with part of the disc F broken off.
Fig. 2 is a vertical cross section of the same taken on the line x y.
The two discs FF are shown moveable. The springs b, b which are by preference
coiled steel springs rest on the supports or brackets c, c which said supports are fixed to
or may be part of the tyre. The other ends of the springs rest against the boss D.
These springs are held in position by means of the snugs f,f. These springs take up
and provide mainly for the bearing and gravitating strains of the axle.
e, e are the radial arms or spokes which project towards the tyre T and against these
arms or spokes e, e I place springs a, a at any suitable angle relatively with the arms e, e.
The other ends of the springs rests against blocks or projections, part of, or fixed to
the Tyre and they are held in position by means of snugs or rods passing through them.
One of the discs F may be solid with the boss D and the arms e, e may be solid with
one of the said discs.
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 :-
The fixing of three or more springs having their central axes in the radial lines
from the centre of the Boss to take up the gravitating strains and shocks between the
axle and the Tyre in conjunction with springs placed between the radial arms e, e and
the Tyre substantially as and for the purposes hereinbefore described.
Dated thin 02-1 J
M
L 1000