Improvements in and relating to Spring Tyres for Cycles and other Vehicles.
Year: 1894

page_text: Date of Application, 11th Apr., 1894
Complete Specification Left. 11th Jan., 1895-Accepted, 11th July, 1895
PROVISIONAL SPECIFICATION.
Improvements in and relating to Spring Tyres for Cycles and other
Vehicles.
JOHN BARLOW 12 Saby Terrace Kinglake Street Nottingham Mechanic do
hereby declare the nature of this invention to be as follows:-
-
My invention relates to improvements in the construction of spring tyres
applicable to cycles and to other vehicles.
According to my invention the wheel rim, which may be of any convenient
section, is fitted with a number of carriages or spring holders which are capable of
moving on the rim to or from the centre of the wheel but which are prevented from
moving round the same. The tops or outer ends of these carriages are connected to
a spring rim which may be fitted with a band of rubber, or other material or
wrapped with wire. In another tyre the carriages are fitted with two or more
rims all of which are sufficiently flexible to act as springs. There is also a spring
rim between the inner ends of the carriages and the inner side of the wheel rim, or
one or more ɛeparate springs may be used with each carriage. These springs are
used for holding or returning the tyre in or to its proper position with regard
to the wheel rim and means are provided for limiting the motion of the same.
The whole of the tyre may be covered with canvas or other material.
Dated this 10th day of April 1894.
:
1
W. H. POTTER, Wh. Sc.,
Newcastle Chambers, Nottingham, Agent for the Applicant.
Improvements in and relating to Spring Tyres for Cycles and other
Vehicles.
JOHN BARLOW 105 Annesley Street late of 12 Saby Terrace Kinglake Street
Nottingham Mechanic 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 in the construction of spring tyres for
cycles and light vehicles.
Hitherto spring tyres have generally been so constructed that the springs at;
and near the tread of the wheel have been the springs from which the greater part
of the resiliancy of the wheel has been obtained. Now the object of this invention
is the construction of a spring tyre in which the resiliancy of the wheel is obtained
from the outer rim of the wheel, and from those springs which are away from the
tread of the wheel.
According to this invention the springs are so attached to the outer rim of the
wheel that when a portion of this rim is by any means moved towards the wheel
rim, the springs at that particular part are thrown out of action, while the alteration
in the shape of the outer rim is resisted to a greater or less extent by all the other
springs in the wheel.

page_text: Figures 1. 2 and 3 of the accompanying drawings illustrate sections of tyres,
and Figure 4 a part elevation of a wheel, all constructed according to this
invention.
In Figure 1. the spring or outer rim a, made preferably of steel suitably
tempered, has attached to it a number of pins b. which pass through slots in the
wheel rim c. and are reduced in size inside the rim c so as to form collars for the
washers d to abut against, and prevent the springs shaking, and also maintain
the proper shape of the wheel when the weight is removed. The reduced parts b'
of the pins are provided with springs e which are held in position by the washers
and pins f. or by nuts, or other equivalent means. The number and position of the
pins and the strength of the springs are varied according to requirements, but for a
twenty eight inch wheel 16 springs have been used with satisfactory results, each
spring being capable of supporting about six pounds with a reduction in length of
about one quarter of an inch.
In Figure 2 the spring rim a is the same as the rim described with reference to
Figure 1.
The wheel rim c shown in Figure 2 is intended to represent wheel rims having
various shaped sections, and the springs e which are in pairs, are carried by
two pins 6 the arrangement of each spring and pin being practically the same
as the pin b and spring e shown in Figure 1. In Figure 2 the washer d embraces
both pins. In Figure 3 the spring e is carried by a pin 6 which is passed
through a hole or slot in the inner end of a frame or carriage g, which is attached
to the spring rim a. In this arrangement the pin b is fitted with a fixed head
or washer h which is forced upon the under side of the rim c by the spring e.
pin b may if desired be carried through the rim c. so that it would be guided
at both ends.
The
In modifications of this invention the pins used for the springs may be without
the part of lesser diameter, but the construction shown is used by preference as
it prevents the springs shaking on the pins when the outer rim is moved
towards the inner one, and also maintains the rims true in shape and position
when the weight is removed.
When the width of the wheel rim does not admit of the pins b Figure 2 or the
frame passing the sides of the same, recesses may be cut therein, but when
this is done the recesses must be wide enough to admit of a slight lateral move-
ment of the pins or frames because the movement of the same to and from the
centre of the wheel is not in exact radial lines. The outer rim may be provided
with a rubber or similar cover k of any suitable section, and springs such as are
shown at n Figure 4 or other equivalent means may be used for preventing the
outer rim moving circumferentially with regard to the wheel. The tyre may be
provided with a cover if desired. When a wheel constructed according to this
invention is in use the weight acting through the centre of the wheel tends to move
the outer tyre towards the inner one at the tread of the wheel, thus if the tread
is at o
Figure 4 the rim a at this point tends to move towards the rim c and
the inward movement of the rim a carries the springs 1. 1. at the right and
left of the point of contract away from the rim c. At the same time this inward
movement of the rim a at the tread of the wheel tends to move the other part of
the rim a away from the rim c, and such outward movement is resisted to a greater
or less extent by those springs which are away from the tread of the wheel.
It will also be seen that when the outer rim moves inward at any point the
pins adjacent to that point will not move towards the centre of the wheel in
radial lines, hence the necessity of the slots or clearance in the wheel rim.
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:
1. A spring tyre for wheels for cycles and light vehicles in which the springs are
80 mounted and arranged that the

page_text: effecting the relative position of the two rims and the arrangement of such springs
with suitable rims whereby when the outer rim at the tread of the wheel is moved
inwards the adjacent springs are thrown out of action, while that part of the wheel
which is away from the tread of the same tends to move outwards and is resisted
by the springs which are away from the tread of the wheel, substantially as set
forth in the accompanying Specification.
2. A spring tyre constructed as shown in Figure 1 and described in the
accompanying Specification.
3. A spring tyre constructed as shown in
accompanying Specification.
4. A spring tyre constructed as shown in
accompanying Specification.
Dated this 10th day of January 1895.
Figure 2 and described in the
Figure 3 and described in the
W. H. POTTER,
Nottingham, Patent Agent.