Improvements in the Construction and Application of Pneumatic Elastic Tyres to Improved Metal Rims of Wheels for Cycles and other Vehicles.
Year: 1893

page_text: Date of Application, 4th Oct., 1893
Complete Specification Left, 3rd July, 1894-Accepted, 18th Aug., 1894
PROVISIONAL SPECIFICATION.
Improvements in the Construction and Application of Pneumatic
Elastic Tyres to Improved Metal Rims of Wheels for Cycles and
other Vehicles.
I, ALEXANDER BLACK, of 90 Commercial Street, Dundee, in the County of
Forfar, Scotland, Cycle Agent, do hereby declare the nature of this invention to
be as follows:-
This invention comprises various improvements in the construction and
application of pneumatic elastic tyres to improved metal rims of wheels for cycles
and other vehicles.
The objects of my invention are:-
To construct an improved canvas cover or case for the air tube; to improve the
shape of the tyre, thus making it more resilient; to reduce vibration; to securely
attach the tyre to the rim of the wheel; and to improve the construction of the
rim by reducing its weight.
My first improvement relates to the construction of the cover, usually made of
canvas, which protects the air_tube, said cover being externally covered or
protected by the rubber tyre. Each side of the said cover is provided with two
sets of wire bands placed at an approved distance from one another, such wire
bands, when the tyre is inflated being nearly of the same diameter. The two sets
of external wire bands do not touch the wheel rim and are continuous by preference,
although each may if required consist of a coil of wire coupled together in any
known way. The two sets of internal wire bands are supported in the wheel rim
and are by preference in coils and coupled together, so that their diameters may be
increased when required by uncoupling and pushing the extremities of the coil
further within its sheath in the cover.
Another improvement consists in the style of construction of the wheel rim, it
being made preferably only of sufficient width to contain the two sets of internal
wire bands, or coils, the two sets of external wires being clear of such rim.
The portions of the cover containing the internal wires may lie side by side in
the rim, or the one may overlap the thickened edge of the other.
Dated this 2nd day of October 1893.
GEO. C. DOUGLAS & Co.,
41, Reform Street, Dundee, Agents for Applicant.
Improvements in the Construction and Application of Pneumatic
Elastic Tyres to Improved Metal Rims of Wheels for Cycles and
other Vehicles.
I, ALEXANDER BLACK, sometime of 90 Commercial Street, Dundee, in the
County of Forfar, Scotland, but now of 59 North Frederick Street, Glasgow, in
the County of Lanark, Scotland, Tyre 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 :—
This invention comprises various improvements in the construction and
application of pneumatic elastic tyres to improved metal rims of wheels for cycles
and other vehicles.

page_text: The objects or my invention are:-
To construct an improved canvas cover or case for the air tube ; to improve the
shape of the tyre, thus making it more resilient; to reduce vibration; to securely
attach the tyre to the rim of the wheel; and to improve the construction of the
rim by reducing its weight.
In order that my invention may be properly understood and readily carried into
effect, I have hereunto appended an explanatory sheet of drawings, in the several
figures of which, corresponding parts are marked with the same numerals of
reference.
Figures 1. 2. and 3. show cross-sections of several modifications of inflated tyres
constructed according to my invention, and Figure 4. illustrates a cross-section of
a cover as adopted for use with modificatious of wheel rims as illustrated by
Figures 1. 2. and 3. although I do not confine myself exclusively to these, but may
use it in connection with any other suitable section.
My first modification relates to the construction of the cover 10, usually made of
canvas, which protects the air tube 11, said cover being externally covered or
protected by the rubber tyre 12. Each side of the said cover is provided with two
sets of wire bands 13. and 14. placed at an approved distance from one another,
such wire bands, when the tyre is inflated being nearly of the same diameter. The
two sets of external wire bands 13. do not touch the wheel rim 15. and are
continuous by preference, although each may, if required, consist of a coil of wire
coupled together in any known way, such as is illustrated and described in my
Specification No. 3140, of 1893. The two sets of internal wire bands 14. are
supported in the wheel rim 15. and are by preference in coils and coupled together,
as hereinbefore indicated, so that their diameters may be increased when required
by uncoupling and pushing the extremities of the coil further within its sheath in
the cover.
Another improvement consists in the style of construction of the wheel rim, it
being preferably only of sufficient width to contain the two sets of internal bands,
or coils 14, the two sets of external wires being clear of such rim. This improve-
ment is illustrated by Figures 1. and 3. The portions of the cover containing the
internal wires may lie side by side in the rim, that is to say, the recess 16. in the
wheel rim may be so narrow as to bring about the above result.
To obtain access to the air tube, such tube is deflated and the wire bands 14.
uncoupled and expanded in diameter, the cover then being taken off in the known
way.
I wish it to be particularly understood that I do not limit myself to the precise
details of construction herein before described and illustrated on the annexed
drawings, but that I hold myself free to make such changes and alterations as
conform with the disposition and scope of my invention.
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
(1.) The mode of constructing a pneumatic tyre cover and rim, and of attaching
such cover to its rim, substantially as herein before described, the combination
consisting of a cover provided with two stiffening rings or bands 13, two wire
bands 14. for keeping the cover against the rim, an air tube lying within the cover,
and a wheel rim.
(2.) The mode of constructing a pneumatic tyre cover, substantially as herein-
before described and illustrated by Figure 4; the combination consisting of a
cover provided with two stiffening rings or bands 13. and two fixing wire bands 14.
Dated this 28th day of June 1894.
GEO. C. DOUGLAS & Co.,
41, Reform Street, Dundee, Agents for Applicant.