improvements in or relating to rneumatic тугев.
Year: 1897

page_text: Date of Application, 27th Feb., 1897
Complete Specification Left, 28th Dec., 1897-Accepted, 26th Feb., 1898
improvements in or relating to rneumatic тугев.
I, NATHANIEL B. HARMON, of 141, Much Park Street, Coventry, in the County of
Warwick, Merchant, do hereby declare the nature of this invention to be as
follows:-
This invention relates to pneumatic tyres and rims for the same and will be carried
out in the following inanner :-
The rim may be constructed of wood metal or other suitable material and is formed
with a central rib in an otherwise crescent shaped or channelled rim. The spokes
enter the channels formed at each side of the central web.
The tyre may be of the tubeless variety if desired, but preferably I employ an air
tube of ordinary construction. The cover is formed with wire or other equivalent
device by which it is secured in one of the channels, the cover then extending
over the central web past the second channel and up on the opposite side of the
rim, then round over the air tube if such be used and back again overlapping
upon itself, the second edge lying upon a portion of the cover in the second
channel beyond the web. The second edge may have an elastic cord or may be
otherwise arranged so as to close upon the other edge of the cover in the space
allotted to it. With this arrangement when the tyre is blown up the edges are forced
into close contact with each other and sufficient adhesion is provided between the two
edges of the cover and the cover and the rim to prevent it blowing off, notwithstanding
the elastic or other expansible edge.
The wire may be a simple wire with the ends hooked after it is placed in the rim
or other means may be employed for securing the wire or that edge of the cover if.a
wire be not used.
Dated thia 27th doo of Fishruary 1807
BOULT & WADE,
Agents for the Applicant.
Improvements in or relating to Pneumatic Tyres.
1, NATHANIEL B. HARMON, of 141, Much Park Street, Coventry, in the County of
Warwick, Merchant, 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 pneumatic tyres and rims for the same and will be carried
out in the following manner :-
The rim may be constructed of wood metal or other suitable material and is formed
[Price 8d.1

page_text: .
with a central rib in an otherwise crescent shaped or channelled rim. The spokes
enter the channels formed at each side of the central rib.
The tyre may be of the tubeless variety if desired, but preferably I employ an air
tube of ordinary construction. The cover is formed with wire or other equivalent
device by which it is secured in one of the channels, the cover then extending over
the central rib past the second channel and up on the opposite side of the rim,
then round over the air tube if such be used and back again overlapping upon
itself, the second edge lying upon a portion of the cover in the second channel
beyond the rib. The second edge may have an elastic cord or may be otherwise
arranged so as to close upon the other edge of the cover in the space allotted to it.
With this arrangement when the tyre is blown up the edges are forced into close
contact with each other and sufficient adhesion is provided between the two edges of
the cover and the cover and the rim to prevent it blowing off, notwithstanding the
elastic or other expansible edge.
The wire may be a simple wire with the ends hooked after it is placed in the rim
or other means may be employed for securing the wire or that edge of the cover if a
wire be not used.
The accompanying drawing illustrates a transverse section of the improved tyre.
The rim A is constructed with a central rib A¹, which forms two channels A², A³.
One edge of the cover B is made inextensible by having a wire C or the like
secured in it. The other edge is made extensible by means of an elastic cord D or
otherwise so that it may overlap and close upon the inextensible edge.
The inextensible edge of the cover carrying a wire C is arranged in the
' channel A2 in the rim, the cover passing over the rib A¹ into the channel A³,
and then round over the air tube E if such be employed, the edge carrying the
extensible cord D overlapping the edge. carrying the wire C and the rib A', and
lying upon a portion of the cover in the channel A³ in the manner indicated in
the drawing.
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
1. In a tubeless or other pneumatic tyre the combination with a rim having a
central rib such as A¹ of an outer cover having an extensible and an inextensible
edge, substantially as described.
2. In a tubeless or other pneumatic tyre a cover having an extensible and an
inextensible edge overlapping each other and lying one on either side of a central
rib such as A¹ in the rim, substantially as described.
3. A rim for a pneumatic tyre having a central rib such as A¹ and lateral channels
such as A2 and A³, substantially as described or illustrated in the accompanying
drawing.
4. The complete tubeless or other pneumatic tyre substantially as described and
illustrated in the accompanying drawing.
Dated this 28th day of December 1897.
BOULT & WADE,
Agents for the Applicant.