Improvements in the Manufacture of Pneumatic Tyres.
Year: 1896

page_text: Date of Application, 28th Apr., 1896
Complete Specification Left, 28th Jan., 1897-Accepted, 27th Mar., 1897
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Pneumatic Tyres.
We, JOSEPH MOSELEY, Indiarubber Manufacturer, and BENJAMIN BLUNDSTONE,
Manager, both of the Chapelfield Works, Ardwick, in the County of Lancaster, do
hereby declare the nature of this invention to be as follows:-
This invention relates to the manufacture of pneumatic tyres, and its object is to
simplify and reduce the cost of manufacture and at the same time to produce an
improved tyre.
In proceeding according to this invention, we construct the air tube of the tyre
in an endless form, of raw sulphurised indiarubber or indiarubber compound, in the
usual or in any convenient manner, and we may partly or completely vulcanise it.
We also construct an endless cover of sulphurised indiarubber or indiarubber
compound, which also may or may not be partly or completely vulcanised. The
air tube is laid upon a rim similar to the rim of the wheel with which the finished
tyre has to be used or upon the equivalent of such a rim, the cover is placed over
it, and the air tube is inflated. In this condition the tyre is subjected to a
vulcanising temperature, so as to effect or complete the vulcanisation of the
tube or of the cover or of both. During the process of vulcanisation, the canvas
lining of the cover may either be inside or outside. If outside, the cover may
afterwards be reversed.
By these improvements, the tyre is moulded and vulcanized in the form, and with
the relative positions of its constituents to themselves and to the rim, occupied in
use; and it follows that when the tyre is inflated upon the wheel, its parts have
their normal forms and dimensions, and no unequal stresses will be set up.
Dated this 27th day of April, A.D. 1896.
W. E. HEYS & SON,
Agents for the Applicants.
Improvements in the Manufacture of Pneumatic Tyres.
We, JOSEPH MOSELEY, Indiarubber Manufacturer, and BENJAMIN BLUNDSTONE,
Manager, both of the Chapelfield Works, Ardwick, in the County of Lancaster, 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 the manufacture of pneumatic tyres, and its object is
to simplify and reduce the cost of manufacture and at the same time to produce
an improved tyre without the use of the ordinary metal moulds. This improved
tyre is not subject to the ordinary strains and stresses from the air inflation when
in use and any wounds or cuts inflicted upon it have no tendency to open and
spread. These improvements are equally applicable to double tube tyres, single
tube tyres, and "tubeless" tyres.

page_text: In the manufacture of a double tube tyre according to this invention, we
construct the air tube in an endless form of raw sulphurised indiarubber or india-
rubber compound in the usual or any convenient manner, and we may partly or
completely vulcanise it. We also construct an endless cover of sulphurised
indiarubber or indiarubber compound, which also may or may not be partly or
completely vulcanised, according to the state of the air tube with which it is to be
employed, it being an essential feature that either the tube or the cover or both
require further vulcanisation. The air tube is laid upon a rim similar to the rim
of the wheel with which it is to be used or upon the equivalent of such a rim, the
cover is placed over it, and the air tube is inflated. In this condition the tyre is
subjected to a vulcanising temperature or is otherwise treated so as to effect or
complete the vulcanisation of the tube or of the cover or of both.
The accompanying drawing illustrates the application of these improvements to
the manufacture of a double tube tyre.
A is the air tube which is made endless or has its ends closed in any usual or
well known manner and is partly or completely vulcanised. This air tube is then
placed upon the rim B which is similar to or may be the one upon which it will be
placed when in use. The cover C which may also be partly or completely
vulcanised is then placed in position and the tube is inflated through a valve or
other suitable opening. When in the inflated condition the tyre is vulcanised or
bas its vulcanisation completed. Either the tube or the cover alone may not be
completely vulcanised or may be unvulcanised when placed upon the rim, but it is
preferred to place them both in position when in a partly vulcanised state and to
complete the process after inflation. In order to prevent the air tube being
formed with a ridge or the like along the line of the edges of the cover, we
prefer to interpose between the rim and the edges of the cover and the air
tube a strip of canvas or the like D or the strip may be combined with or
incorporated with the air tube.
It will of course be understood that the rim B may be substituted by a mould or
former having an equivalent shape, and that one air tube, which may then be of
stouter construction than the one illustrated, may be employed in connection with
the vulcanisation of successive covers. Similarly, in the vulcanisation of air
tubes, the actual cover C may be replaced by a simple cover of canvas or other
suitable material having the same internal dimensions, this substituted cover
forming with the rim a mould for a series of air tubes. If desired the ordinary
cover may be employed in the vulcanisation of more than one air tube.
A tyre constructed as described has its parts or some of its parts moulded or
vulcanised in the form and in the relative positions occupied by them in use, and
it follows that when the tyre is inflated upon the wheel, its parts have their normal
forms and dimensions and no unequal stresses will be set up.
We have described the application of our invention to a double tube tyre of the
wired on variety but it is obvious that it is equally applicable to a single tube
tyre which may similarly be vulcanised or have its vulcanisation completed when
it is inflated and occupying the position of use. A "tubeless" tyre or a tyre
consisting of an arch shaped piece resembling a cover the edges of which are
adapted to overlap to form a joint may also be vulcanised in position and when
inflated.
Any well known means may be adopted for preventing adhesion between those
parts of the tyre which are afterwards to be separated.
In the drawing the cover is shown with the canvas or similar lining inside, but
we may, if desired, vulcanise the cover with the canvas outside, and reverse the
cover for use.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is :-
1. A pneumatic tyre air tube which is vulcanised or has its vulcanisation

page_text: completed when inflated and occupying the position which it occupies when in
use, substantially as hereinbefore described and as illustrated by the accompanying
drawing.
2. A pneumatic tyre cover, which is vulcanised or has its vulcanisation com-
pleted when occupying the same position and under the same conditions as
when in use, substantially as herein before described and as illustrated by the
accompanying drawing.
3. A pneumatic tyre which is vulcanised or has its vulcanisation completed
when occupying the same position and under the same conditions as when in use,
substantially as described.
Dated this 27th day of January 1897.
W. E. HEYS & SON,
Agents for the Applicants.