Improvements in Noiseless Tyres for the Wheels of Bicycles, Motor- cars, and other Vehicles.
Year: 1899

page_text: Date of Application, 17th Feb., 1899
Complete Specification Left, 17th Nov., 1899-Accepted, 17th Feb., 1900
PROVISIONAL SPECIFICATION.
Improvements in Noiseless Tyres for the Wheels of Bicycles, Motor-
cars, and other Vehicles.
I, ROBERT JOHN CHADWICK MITCHELL, of Albert Works, Waterfoot, in the
County of Lancaster, Felt Manufacturer, do hereby declare the nature of this
invention to be as follows:-
-
The object of this invention is to manufacture an improved noiseless tyre for
the wheels of bicycles, motor-cars and other vehicles in substitution for the
india rubber tyres either solid or pneumatic at present in use.
The invention consists principally in manufacturing such noiseless and seam-
less tyres from solid felt hardened and milled to the required consistency and
impregnated with a suitable water-proofing solution or composition which will
render the same more solid and durable and impervious to moisture without
impairing its elasticity or resilience and noiseless qualities.
For the purposes of my invention I first manufacture, by felting and hardening
upon a suitable cylindrical bed or former, a cylinder of solid felt of an internal
diameter corresponding with the outer diameter of the metallic rim or felloe
of the wheel to which the tyre is to be applied, and of any convenient width,
and of a suitable thickness according to the depth of tyre required.
I then cut off from this cylinder of solid hardened felt a series of rings of
a suitable width to form the tyres required, and after turning them in a lathe
to the required form and size I impregnate them with a suitable waterproofing
solution or composition or otherwise treat them so as to further harden and
solidify the same, without in any way impairing or otherwise interfering with
their resilient and noiseless qualities, to increase their durability and to render
them proof against the deleterious effects of the weather.
The noiseless and seamless tyres thus manufactured and prepared can be
stretched over the raised edges of the metallic or other rim or felloe of a wheel,
and may be either cemented thereto by india rubber solution or other water-
proof cement, or may be otherwise attached thereto in such a manner as to
prevent them from creeping," and will be found to be much more durable,
perfectly resilient, and noiseless, and much less liable to deterioration from the
effects of heat, cold, or moisture than the tyres partly or wholly of india rubber
ordinarily employed when noiseless tyres are desired.

page_text: Improvements in Noiseless Tyres for the Wheels of Bicycles, Motor-
cars, and other Vehicles.
I, ROBERT JOHN CHADWICK MITCHELL, of Albert Works, Waterfoot, in the
County of Lancaster, Felt Manufacturer, 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 object of this invention is to manufacture an improved noiseless and
seamless solid tyre for the wheels of bicycles, motor cars, and other vehicles
or carriages in substitution for the india rubber tyres, either solid or pneumatic
at present in use.
The invention consists principally in manufacturing such noiseless and seam-
less tyres from solid felt hardened and milled to the required consistency, and
if preferred impregnated with a suitable waterproofing solution or composition
which will render the same more solid and durable, and impervious to moisture
without impairing its elasticity or resilience and noiseless qualities.
The manner in which my said invention is to be performed or carried into
practical effect will be readily understood on reference to the sheet of drawings
hereunto annexed and the following explanation thereof.
For the purposes of my invention I first manufacture, by felting hardening
and milling upon a suitable cylindrical bed or former, a cylinder of solid felt,
(as shown in section at Fig. 1 on the drawing) of an internal diameter corre-
sponding with the outer circumference of the metallic or other rim or felloe
of the wheel to which the tyre is to be applied, and of any convenient width,
and of a suitable thickness according to the depth of tyre required.
I then cut off from the cylinder of hardened and milled felt a series of rings
(one of which is shown in section at Fig. 2 on the drawings) of a suitable width
to form the tyres required, and after turning them in a lathe to the required
form and size (as shown at Fig. 3) I may if preferred impregnate them with
a suitable waterproof solution or composition or otherwise treat them so as to
further harden or solidify the same (without in any way impairing or otherwise
interfering with their resilient and noiseless qualities) to increase their durability
and to render them proof against the deleterious effects of the weather, but if
the milling is carried on to a sufficient extent this after treatment is
unnecessary.
Sometimes instead of cutting off the rings (Fig. 2) first and then turning them
separately in a lathe to the required form I place the whole cylinder on a former
or chuck in the lathe and turn all the rings thereon side by side, and after-
wards cut them off seriatim, as shown at Fig. 4 on the drawings.
The noiseless and seamless felt tyres thus manufactured and prepared can be
stretched over the edges of the metallic or other rim or felloe of a wheel, and
may be either cemented thereto by india rubber solution or other waterproof
ccment, or may be otherwise attached thereto in such a manner as to prevent
them from " creeping," and will be much more durable, less costly, resilient,
and noiseless not subject to side-slipping, and much less liable to deterioration
from the effects of heat, cold, or moisture than the tyres manufactured either
partly or wholly of india rubber which are ordinarily employed when noiseless
tyres are desired, and being made entirely without joint or seam they are much
less liable to fracture.

page_text: 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:―
The improvements in the manufacture of noiseless and seamless tyres for the
wheels of bicycles, motor-cars, and other vehicles from a cylinder of solid
hardened and milled felt in the manner herein before more particularly set forth
and described and illustrated by the drawings annexed.
Dated this 14th day of November 1899.
GEO. DAVIES & SON,
Agents for the Applicant, 4, St. Ann's Square, Manchester.