Year: 1896

page_text: ERNEST GEORGE EDMANDS 63 Wilton Road Sparkhill Birmingham Warwick-
shire Manager of Cycle Tyre Company do hereby declare the nature of this
invention to be as follows:-
My invention relates to improvements in the construction of Pneumatic Tyres
for wheels of Cycles and Vehicles.
The cheif object of my invention is to provide a means of attachment for
detachable Pneumatic Tyres so that a tyre constructed according to my invention
can be firmly held in position on any form of steel wood or other rims at present
in use for Pneumatic or Cushion Tyres without the aid of inextensible edges or
cores, or without beaded edges on the cover to act in conjuntion with a rim
turned over to suit, as now generally used.
To carry out my invention I employ canvas or suitable fabric woven in the
ordinary way but preferably with the warp threads stronger than the weft. Out
of this I form a circular band of suitable width, circumference, and thickness
cut in such a manner that the stronger threads run at an angle of about 30 degrees
to the edge of the band; or I may use a fabric specially woven to give this result.
Each edge of this band of canvas or fabric is then folded over, or has inserted
a strip of vulcanite aluminum steel brass or other suitable material about 3/16"
wide and 1/64" thick which may or may not be fluted or bent according to which
is found most effective. These strips may be of sufficient length to go completely
round each edge of the band so that the ends just meet or any number of strips
may be used of like width and thickness.
The band is then covered with rubber in the ordinary way forming a complete
Pneumatic cover.
It will at once be seen that, as the above mentioned strips are not made inexten-
sible, as in the Pneumatic Tyre known as the Dunlop. Welch, the edges of the
cover will stretch over the greatest circumference of any section of rim now in
ordinary use and on an air tube being fitted and inflated the expansion will cause
a strain on each of the strong fibres of the canvas, but owing to each edge being
attached to the above strips of material and the acute angle at which the fibres
act the edges of the cover endeavour to contract the above mentioned strips, and
failing to do this force themselves on to the smallest circumference of the rim
causing the tyre to hold in a rigid postion
I may insert one or more thicknesses of other canvas for the purpose of strength
if I find it necessary or the edges mentioned may be folded into each other or
attached together by any suitable method, providing I obtain equal or better
results.
1 1
1100C

page_text: I, ERNEST GEORGE EDMANDS, of 63 Wilton Road, Sparkhill, Birmingham, in
the County of Warwickshire, Manager, 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:-
My invention relates to improvements in the construction of pneumatic tyres
for wheels of cycles and vehicles.
The chief object being to provide a means of attachment for detachable pneu-
matic covers so that a tyre constructed according to my invention can be firmly
held in position on any form of steel, wood or other rim at present in use for
pneumatic or cushion tyres without the aid of inextensible edges or covers as in
the tyre known as the Dunlop Welch or without beaded edges to act in conjunction
with a rim turned over to suit as in the tyre known as the Clincher.
And in order that my invention may be thoroughly understood, I now proceed
to describe the accompanying drawing thereof, reference being had to letters and
figures marked thereon.
Fig. 1, is a portion of a length of canvas or fabric.
Figs. 2 and 3, are plans of the cover with the rubber removed to show the
canvas or fabric.
Fig. 4, is a section of a tyre fitted to a flat bottom rim which is attached to the
rim by means of the strips f fitted in the edges of the cover.
Fig. 5, is a section of a tyre fitted to an ordinary curved section rim and attached
thereto by means of the strips f.
To carry out my invention I employ canvas or suitable fabric woven in the
ordinary way but with the warp threads a stronger than the weft b out of this I
form a circular band g of suitable width, circumference and thickness cut in such
a manner that the stronger threads run at an angle of say 30 degrees as in Figs. 2,
and 3, or less to the edge of the band the method of cutting being indicated by
the dotted lines c c, and d d, in Fig. 1, (or as in Figs. 2, and 3,) or I may use
a fabric specially made in a circular form to give this result.
Each edge e of this band of canvas or fabric is then folded over or has inserted
a strip of vulcanite, aluminium, steel, brass or other suitable material, these
said strips may be of sufficient length to go completely round each edge of the
bands g so that the ends just meet, or any number of strips f may be used of like
width and thickness.
I also find in practice that the wire edging described in my Patent Specification
No. 9724 of 1896 is very effective, I also find that various shapes of edging may be
used but all must resist compression but extend longitudinally.
The band g of canvas is then covered with india rubber h in the ordinary way
forming a complete pneumatic tyre cover.
It will at once be seen that as the above mentioned strips f are not made
inextensible as in the pneumatic tyre known as the Dunlop-Welch the edge e of
the cover or band g will stretch over the greatest circumference of any section of
rim in ordinary use and on an air tube i being fitted and inflated the expansion
will cause a strain on each of the strong fibres of the canvas band g but owing to
cach cdge e being attached to the above strips f of material before mentioned and 4
the acute angle at which the fibres act, the edges e of the cover or band
endeavour to contract the above mentioned strips f laterally, and failing to do this
force themselves on to the smallest circumference of the rim causing the cover
to hold in a rigid position,

page_text: I may insert one or more thicknesses of other canvas for the purpose of strength
providing I obtain the above results.
The tyre may be constructed on the tubeless principle which dispenses with air
tube allowing the edge to be perfectly flexible for the purpose of attaching. The
edges mentioned may be folded into each other if found to give equal or better
results.
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 pneumatic tyre covers, the combination of the construction of a canvas
or fabric tyre cover or band, substantially as herein described and according to
the accompanying drawing.
2. In pneumatic tyre covers, the combination of a canvas or fabric constructed
as described in the above Specification and on extensible edging to resist lateral
contraction.
3. In pneumatic tyres, a cover which is extensible at the edge to fit any section
of rim, substantially as herein described.
4. In pneumatic tyres, the combination of various parts in the manner specified
in above Specification.
5. In pneumatic tyre covers, the construction of a canvas fabric in which the
strong fibres act at an acute angle sufficient to remove the upward pull from the
rim acting with or without a metal edging, substantially as described.
Dated this 24th day of June 1897.
J. P. BAYLY,
18 Fulham Place, London, W., Agent for the Applicant.