Improvements in and connected with Detachable Pneumatic Tyres for Cycles and other Vehicles.
Year: 1893

page_text: Date of Application, 2nd Aug., 1893
Complete Specification Left, 19th Apr., 1894-Accepted, 19th May, 1894
PROVISIONAL
SPECIFICATION.
Improvements in and connected with Detachable Pneumatic Tyres
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 relates to detachable pneumatic elastic tyres fitted to the rims of
wheels of cycles or other vehicles, and consists in improvements in methods of
fastening the cover to the rim, and of obtaining access to the air tube.
In carrying out my invention according to one modification, each side of the tyre
cover is attached to the rim by means of two or more distinct bands or strands of
wire, each band being coupled together, that is to say formed into a continuous ring
by means of a suitable coupling. Each band is partially contained in the cover,
the ends protruding from it at such a distance apart, as to allow of its coupling
being readily adjusted. For example:-In a cover having two bands on each side,
I sometimes allow the one band to support say one half of the cover, or a greater
portion thereof, the other band similarly supporting the opposite side of same.
According to another modification I may attach the ends of the wires to the rim
in any suitable known way, in place of the hereinbefore described couplings.
Dated this 1st day of August 1893.
GEO. C. DOUGLAS & Co.,
41, Reform Street, Dundee, Agents for Applicant.
COMPLETE SPECIFICATION.
Improvements in and connected with Detachable Pneumatic Tyres
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 relates to detachable pneumatic elastic tyres fitted to the rims of
wheels of cycles or other vehicles, and consists in improvements in methods of
fastening the cover to the rim and of obtaining access to the air tube.
In order that my invention may be properly understood and readily carried into
effect, I have hereunto appended two explanatory sheets of drawings, in the
several figures of which, corresponding parts are marked with the same numerals of
reference.
Figure 1. (Sheet 1.) represents a side elevation of a wheel rim, whose side
from A. to A. and B. to B. is broken off, in order to more clearly illustrate the
method of attaching the tyre, such rim and tyre being preferably of the type shown
in Figure 5. (Sheet 2.).
Figure 2. (Sheet 1.) is a diagrammatic view of the two wires before insertion into
the edge of the cover.
Figures 3. and 4. (Sheet 1.) show two methods of fastening or securing the ends
of the wires.

page_text: Figure 5. (Sheet 2.) represents a part side elevation of a wheel rim and inflated
tyre, to an enlarged scale.
The dotted lines in the coil diagram (Figure 2.) indicate the portions of the
convolutions within the tubular edge of one side of the cover, and the full lines
the portions of the convolutions outside same.
In carrying out my invention according to one modification as illustrated by
Figures 1. 2. 3. and 5. each side of the tyre cover 10. is attached to the rim 11. by
means of two or more distinct bands, or strands of wire 12, each band being
coupled together, that is to say formed into a continuous ring by means of a
suitable coupling, such as the link coupling 14. (Figure 3.). Each band is
partially contained in the cover, the ends protruding from it at such a distance
apart, as to allow of its coupling being readily adjusted. In the modification
shown, which has two bands on each side, I sometimes allow the one band to
support say one half of the cover, or a greater portion thereof, the other band
similarly supporting the opposite side of same.
To obtain access to the air tube, the tyre is deflated and the links 13. rotated in
the direction of the arrows, until they assume the position shown by the dotted
lines (Figure 5.), in this manner enlarging the diameter of the bands; the cover
then being taken off in the known way.
According to another modification, I may attach the ends of the wires 12. to the
rim 11, as illustrated in Figure 4.
To obtain access to the air tube, the tyre is deflated and the ends of the wires are
withdrawn from their holes 15.-as shewn by the dotted lines, Figure 4.-and then
pushed further apart, in this manner enlarging the diameter of the edges of the
cover to such an extent as to allow of it being passed over the wheel rim, in the
known way.
I wish it to be particularly understood that I do not limit myself to the precise
details of construction, herenbefore 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.
I am aware of the various methods of coupling together wire bands in connection
with pneumatic elastic tyres and I lay no claim to any of such improvements, but
I declare that what I claim is
(1.) The mode of attaching an elastic pneumatic tyre to its wheel rim, by means
of two distinct sets of bands applied at each side of the cover, that is to say having
two distinct bands at one edge, and two similar bands at the other edge of the
cover, the one band supporting the edge of the cover where the other band is
coupled together or attached to the wheel rim, as described.
(2.) The mode of attaching an elastic pneumatic tyre to its wheel rim, by means
of two or more distinct sets of bands applied at each side of the cover, that is to
say having two or more distinct bands at one edge, and two or more similar bands
at the other edge of the cover, the one band supporting the edge of the cover
where the other band or bands are coupled together, or attached to the wheel rim,
as described.
Dated this 11th day of April 1894.
GEO. C. DOUGLAS & Co.,
41, Reform Street, Dundee, Agents for Applicant.