Improvements in and connected with Pneumatic Tyres.
Year: 1892

page_text: Date of Application, 23rd Feb., 1892
Complete Specification Left. 23rd Nov., 1892-Accepted, 7th Jan., 1893
PROVISIONAL SPECIFICATION.
Improvements in and connected with Pneumatic Tyres.
I FREDERICK CHARLES NOAR of 12 Church Street, Manchester, in the
County of Lancaster, Wholesale Clothier, do hereby declare the nature of this
invention to be as follows:-
My said invention relates to pneumatic tyres and chiefly to an improved method
of securing the cover which confines the inflated bag to the outer edge of the rim
of the wheel.
I form the rim with a continuous recess running round the edge thereof, or it
might be with a succession of hooks or clips pitched sufficiently closely together to
constitute a substitute for the continuous recess.
I also introduce a wire into each edge of the cover, each wire ending in a
projecting screwed tail or extension which is intended to pass through the rim and
through a boss or abutment on the rim. When the cover is applied to the wheel
it is placed over the inflatable bag and the wired edges are placed in the continuous
recesses in the sides of the rim. The aforesaid extensions of the wire are passed
through the rim and bosses or abutments, and nuts being placed on the screwed
ends the wires can be drawn tightly up and made absolutely secure in the position
they occupy in the continuous recesses. The bag may then be properly inflated so
as to fill the cover and the wheel is ready for use. The advantages of my improved
method and means will be apparent. The cover is easily and quickly placed in
position and the binding effects of the nuts on the extensions of the edging wires
is such that there is no possibility of the bag becoming detached from the rim even
if by accident the bag should become deflated. This is a most important con-
sideration when my invention is applied to velocipedes as all covers depending for
their security upon the continued inflation of the enclosed bag and liable to become
detached while running by the accidental deflation of the bag are a constant source
of danger to the rider. Under my improvements not only is the cover capable of
being applied and removed in a comparatively short space of time but when applied
it is rigidly and independently held to the rim so that the deflation of the bag has
no effect in loosening its hold. The securing means being situated at the outside
edges of the rim there is nothing to interfere with the bedding of the bag upon
the periphery of the rim and the bag is not liable to be cut by contact with any
interrupting object or fastening.
Dated this 22nd day of February 1892.
DUTTUN & FULTON
1, St. James' Square, Manchester, Agents.
COMPLETE SPECIFICATION.
Improvements in and connected with Pneumatic Tyres.
I FREDERICK CHARLES NOAR of 12 Church Street, Manchester, in the
County of Lancaster, Wholesale Clothier, 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 and accompanying
drawings:-
-
My said invention relates to pneumatic tyres and chiefly to an improved method
of securing the cover which confines the inflated bag to the outer edge of the rim

page_text: The annexed sheet of drawings clearly illustrates my invention.
Fig. 1 is a section of the improved tyre.
Fig. 2 is a side view of a portion of the tyre showing the mode of securing and
tightening the wires.
Fig. 3 is a section of a portion of the tyre showing a modified method of securing
and straining the wires.
The rim a is made hollow and of the form clearly shown in Fig. 1. The
improved section presents a broad secure base a¹. upon which the inflated bag
finds a safe resting place without any corners or angles to cut or injure the bag.
To render the contact between the bag 6 and the base a still more secure I might
place a rubber pad or thickness c between the bag and the base. I form the rim a
with a continuous recess d running round the edge thereof, or it might be with a
succession of hooks or clips pitched sufficiently closely together to constitute a
substitute for the continuous recess d. I also introduce a wire e into each looped
edge of the cover each wire e ending in a projecting screwed tail or extension e¹
which is passed through the rim a and through a boss or abutment g on the rim as
shown in Fig. 2.
When the cover is applied to the wheel it is placed over the inflatable bag b and
the wired edges are placed in the continuous recesses d in the sides of the rim.
The aforesaid extensions of the wire are passed through the rim and bosses or
abutments g and nuts es being placed on the screwed ends the wires can be drawn
tightly up and made absolutely secure in the position they occupy in the continuous
recesses d. The bag b may then be properly inflated so as to fill the cover and
the wheel is ready for use. The other end of the wire is either secured in the
same manner or is held fixed by any suitable means.
To
In the modification illustrated in Fig. 3 the wires e instead of being held and
strained by nuts as described are coiled upon square headed straining pegs h, these
pegs being supported in bearings i formed on or attached to the rim a.
prevent the resiling of the pegs h when under strain, I form the bearing i with
ratchet teeth and also form the under side of the collar h¹ on the peg with similar
ratchet teeth so that the two parts engage and hold each other. To hold
the ratchet teeth in contact when the peg is under strain I form a thread on the
outer diameter of the collar and of the bearing and screw a cover nut k over both,
thereby holding them together. I might however use other means to prevent the
resiling of the peg such for example as an adjustable key or a jamb nut or set
screw, or I might turn the pegs by a worm and worm wheel as in the machine
heads of stringed instruments. The advantages of my improved method and
means will be apparent. The cover f is easily and quickly placed in position and
the binding effects of the nuts or pegs on the extensions of edging wires e is such
that there is no possibility of the cover becoming detached from the rim even if by
accident the bag should become deflated. This is a most important consideration
when my invention is applied to velocipedes as all covers depending for their
security upon the continued inflation of the enclosed bag and liable to become
detached while running by the accidental deflation of the bag are a constant source
of danger to the rider. Under my improvements not only is the cover capable of
being applied and removed in a comparatively short space of time but when applied
it is rigidly and independently held to the rim so that the deflation of the bag has
no effect in loosening its hold. The securing means being situated at the outside
edges of the rim there is nothing to interfere with the bedding of the bag upon
rim and the bag is not liable to be cut by contact with any interrupting object or
fastening.
the
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 improved pneumatic tyre constituted by the hollow rim a with extended

page_text: edges of the cover the edging wires being drawn up and strained by nuts, pegs, or
equivalent means so as positively to bind the wired edges of the cover securely in
the recesses of the rim and thus prevent the cover parting from the rim even when
the air bag becomes deflated substantially as described and shown.
2. A hollow rim for the indicated purposes having recesses running continuously
round the edges to receive the wired edges of the cover, in combination with the
extended base to support the inflated air bag substantially as described and shown.
Dated this 22nd day of November 1892.
E. K. DUTTON & Co.,
5, John Dalton Street, Manchester, Agents.