Improvements in or relating to Pneumatic Tyres.
Year: 1894

page_text: Date of Application, 26th Oct., 1834
Complete Specification Left, 28th Jan., 1895-Accepted, 2nd Mar., 1895
PROVISIONAL SPECIFICATION.
Improvements in or relating to Pneumatic Tyres.
I, CHARLES INGLEFIELD of 12 Raby Street, Moss Side, Manchester, Cycle
Agent, do hereby declare the nature of my said invention to be as follows :-
These improvements refer chiefly to the pneumatic tyres of bicycles, tricycles,
safeties & similar velocipedes and have for their object to provide means whereby
the air tubes of such tyres shall be effectually protected from being punctured by
sharp obstacles over which the tyres may run.
In accordance with my invention I employ one or more lengths of, by preference
boar skin, finished without oil or tallow, & which lengths of boar skin are about
an inch and a half in width & with their respective edges skived or thinned off &
I make such lengths of boar skin into a belt or annulus, joining the ends of the
lengths together by cement, for this purpose.
On the finished side of this skin & inner circumference of the belt I apply a
covering or backing of linen canvas or other similar material which is secured
thereto by a solution of rubber or the like and which canvas is of such a width as
to extend about half an inch beyond each edge of the belt.
Having so mounted the skin I apply the same to the inside of the outer covering
of the tyre, fixing the same thereto by rubber solution or other adhesive agent and
making it as part of the cover itself.
The cover being now applied to the air tube it will be seen that the aforesaid
skin which is practically punctureless will come between it & the cover & thus
when the tyre is in use will effectually protect the air tube.
The mounting & fixing of the skin in the manner aforesaid to the tyre covering
prevents the same "creeping" or or getting out of place.
Other skins may be used in place of boar skin, my invention consisting of the
method of preparing & mounting & fixing the skin to the tyre covering.
Dated this the 24th day of October 1894.
Improvements in or relating to Pneumatic Tyres.
I, CHARLES INGLEFIELD of 12 Raby Street, Moss Side, Manchester, Cycle
Agent, 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:-
These improvements refer chiefly to the pneumatic tyres of bicycles, tricycles,
safeties and similar velocipedes (although equally applicable to the tyres of other
vehicles), and have for their object to provide means whereby the air tubes of such
tyres shall be effectually protected from puncture.
In accordance with my invention I employ one or more strips of boar or similar
Prine d 1

page_text: skin (by preference finished without oil or tallow), about an inch and a half in
width and of such a length as will when the ends of such strips are joined
together, form a band or belt equal to the inner circumference of the covering of a
pneumatic tyre. The longitudinal edges of these strips of skin are "skived" or
thinned off to give pliability to the belt and allow of its assuming a curved or
semi-circular form transversely. The ends of the strips may be similarly "skived"
or thinned off to facilitate the joining of them together which is best effected by
cement or other similar means.
On the finished side of this belt of boar skin I apply a backing of textile
material, preferably linen canvas, which is secured thereto by a solution of india-
rubber or other convenient adhesive agent, and which backing is about an inch
wider than the belt and therefore extends half an inch beyond each edge thereof.
The belt and backing so mounted constitute a puncture-proof band.
In its application to a pneumatic tyre the band is placed between the air tube
and the outer covering of the tyre, and is permanently fixed by the selvage or
over-hanging edges of the canvas backing, which form the vehicle of attachment,
either to the air tube or, by preference to the inside of the said outer covering.
And in order that my said invention shall be the more readily understood and
carried into practical effect I have hereunto annexed a sheet of drawings and will
now proceed to describe the same with the assistance of the various figures and
letters of reference marked thereon:
Fig. 1 is a transverse section, about full size, of the strip or strips of boar skin
aforesaid.
Fig. 2 is a similar transverse section of the textile or linen canvas backing about
an inch wider than the boar skin.
Fig. 3 is a transverse section of the backing and boar skin when put together
shewing a selvage or over-hanging edge of about half an inch of canvas on either
side of the skin.
Fig. 4 is a transverse section of the outer covering of a pneumatic tyre with my
improved puncture-proof band applied thereto, and Fig. 5 illustrates a similar
section of such covering and band when forming part of a pneumatic tyre.
In all the views (A) designates the boar skin or other similar puncture-proof
material, and (B) the backing of linen canvas or other similar material or vehicle
for effecting the attachment of the skin to the tyre covering. As illustrated more
clearly in Fig. 1 the longitudinal edges of the boar skin are "skived" or thinned
off, and preferably on the finished side, and on the side on which the canvas
backing is applied, thus taking away any sharp cutting edges in the tyre and
enabling the skin to be flexible both longitudinally and transversely, and to more
readily accommodate itself to the movements of the tyre. The canvas backing is,
by preference affixed to the boar skin by a solution of india-rubber, which same
solution is advantageously applied to the attaching faces of the over-hanging edges
to facilitate and give a prepared surface for the attaching of the band to the tyre
cover.
The puncture-proof band is applied to the cover (C) as illustrated in Fig. 4 the
width of the band being equally distributed upon each side of the centre line of
the tyre tread. The band is attached by rubber solution, cement or other adhesive
substance applied to the edges (D) of the canvas backing.
This method of mounting and fixing the puncture-proof baud entirely prevents
what is known as 66
creeping" and effectually keeps the band over the exposed
parts of the air tube.
Being so fixed to the outside covering it practically becomes part of the cover
itself and therefore facilitates the manipulation of the parts in constructing
the tyre.
On being applied to the tyre the relation of the several parts is as illustrated
in Fig. 5 in which (E) is the air tube and (F) the wheel rim. In this view I have
shewn the tyre as running over a tack, and the manner in which the puncture-
proof band effectually resists its intrusion, the point of the tack not entering

page_text: further than the outside surface of the boar skin. The action would be the same
with a thorn or any other sharp obstacle common to road-ways.
Having thus particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed 1 declare that what
I claim is :-
A band of boar skin or other similar flexible and puncture-proof material,
mounted upon a backing or band of textile material or other similar and suitable
attaching medium of a greater width, and affixed by the edges of such backing to
the outer covering of a pneumatic tyre substantially as and for the purposes
hereinbefore set forth and illustrated on the accompanying drawings.
Dated this 26th day of January 1895.
JOHN G. WILSON & Co.,
Agents.