Improvements in Pneumatic Tyres for the Wheels of Cycles and other Vehicles.
Year: 1895

page_text: Date of Application, 3rd Dec., 1895
Complete Specification Left, 2nd Sept., 1896-Accepted, 24th Oct., 1896
PROVISIONAL SPECIFICATION.
Improvements in Pneumatic Tyres for the Wheels of Cycles and
other Vehicles.
I, ARTHUR ALEXANDER CROZIER, of 43 Gibson Square, Islington, in the
County of London, Engineer, do hereby declare the nature of this invention to be
as follows:-
This invention relates to an improvement in detachable pneumatic tyres, in
which the outer cover of the tyre is held on the rim of the wheel by the inflation
of an inner tube, such outer cover being formed with suitable flanges, to prevent
the cover from blowing off the rim of the wheel when the tyre is inflated.
According to my invention, I fit to the edges of the outer cover of the tyre a
fine chain, the links of which may be of any suitable shape and of any suitable
metal, such chain may be made endless, or the meeting ends connected by a hook
or otherwise; the chain may be covered with indiarubber or gutta percha, or may
have moulded around it a covering of indiarubber, gutta percha or the like; and
covered with canvas or the like extending from the under surface of the outer
cover, or the material of the edges of the outer cover may be moulded around the
chain, thus forming a very flexible, light and unstretchable flange which will be
easy to disconnect from the rim.
Dated this 3rd day of December 1895.
ARTHUR ALEXANDER CROZIER.
COMPLETE SPECIFICATION.
Improvements in Pneumatic Tyres for the Wheels of Cycles and
other Vehicles.
I, ARTHUR ALEXANDER CROZIER, of 43 Gibson Square, Islington, in the
County of London, Engineer, do hereby declare the nature of the said 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 an improvement in detachable pneumatic tyres, in
which the outer cover of the tyre is held on the rim of the wheel by the inflation
of an inner tube; such outer cover being formed with suitable edges or flanges,
to prevent the cover from blowing off the rim of the wheel, when the tyre is
inflated.
According to my invention, I fit to the edges, of the outer cover of the tyre, a
fine stamped chain, a, the links of which may be of any suitable shape, and of
any suitable metal, such stamped chain a, may be made endless by a brazed wire
link or otherwise; the chain may be covered in any suitable manner with gutta-
percha, indiarubber or the like, b, so as to fill in all the links and prevent the
chain getting entangled, such covered chain a is fitted to the edges of the outer
cover of the tyre and enclosed in the canvas or fabric, extending from the under
surface of the outer cover, or in any other suitable manner.
A detachable tyre fitted with such covered stamped chain, possesses the important
I lavice kil

page_text: advantage over detachable tyres fitted with endless wires on their edges, in that
the chain being extremely flexible is very easy to disconnect from the rim of the
wheel, when it is desired to remove the outer cover, to repair the tyre; and such
chain being a stamped chain, the links of which are stamped out of one piece of
sheet metal, and then bent and threaded one within the other, there are no joins in
the links, and no brazed joints in the links to pull apart.
I have found that a chain of this description made from hard brass or steel of a
sufficient thickness will not stretch under any pressure of inflation which pneumatic
tyres are subjected to; and such stamped chain possesses the important advantage
over tyres made with hard rubber or combined rubber and canvas edges in that it
produces a much lighter tyre, and a tyre that is much less liable to blow off the
rim when under high pressure of inflation, it being a well known fact that hard
rubber or combined rubber and canvas or other fabric edges of detachable pneumatic
tyres often stretch and blow off the rim of the wheel when the tyre is highly
inflated, unless such rubber or rubber and fabric edges be made excessively thick
and heavy so as to prevent their stretching, which of course makes the tyre very
heavy.
By the use of such stamped chain, I attain the before mentioned important
advantages over existing detachable pneumatic tyres fitted with endless wires on
their edges, and those formed with hard rubber or combined rubber and fabric
edges.
The invention is illustrated on the accompanying drawings, in which ;-
Fig. 1, represents a cross section of a detachable pneumatic tyre, fitted with the
improved stamped and covered chain on its edges.
Fig. 2, represents one form of stamped chain, on an enlarged scale partly
covered.
Fig. 3, represents one link of the stamped chain before it is bent.
I do not bind myself to the particular pattern of stamped chain illustrated, as a
stamped chain may be made in several other patterns which would be suitable for
carrying the invention into effect.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed I declare that what I
claim is :-
1. The combination of a detachable pneumatic tyre and a stamped chain, made
from any suitable metal.
2. A stamped chain covered with gutta-percha, india-rubber or the like, in any
Buitable manner for the purpose herein before described.
Dated this 26th day of August 1896.
ARTHUR ALEXANDER CROZIER.