Improvements in and relating to Pneumatic Tyres.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in and relating to Pneumatic Tyres.
I, SIDNEY PATTISSON, of 20, Edwardes Square, Kensington, in the County of
Middlesex, Gentleman, do hereby declare the nature of this invention to be as
follows:
-
This invention relates to an improved device for attaching the covers of pneu-
matic tyres to wheel rims, and it consists in mounting in one or both edges
of the cover-in suitable pockets or otherwise-extensible bands, strips or cords
composed partly of any suitable inextensible material and partly of any suitable
extensible material, the object being to facilitate the attachment and detachment
of the tyre, which operation, prior to this invention, has in most cases been
attended with difficulty and the use of levers or other devices for removing the
tyre from the rim tend to strain the wires and injure the rims and tyres.
The inextensible part of the band may consists of a length of wire, cord, gut
or the like material and the extensible part of the band, preferably takes the
form of a spirally wound metallic spring or springs. These springs may be
conveniently attached to the ends of the length of wire or the like by forming
them with tapered ends adapted to embrace enlargements formed on or attached
to the ends of the length of wire or the like.
To prevent the edges of the tyre from lifting in a wheel rim
employ any
suitable devices such as a plate or its equivalent adapted to rest on the said
extensible part, the plate being locked down to the wheel rim by a screw or its
equivalent. The plate may conveniently be formed on or attached to the stem
of the valve so that it can be released when the lock nut of the valve is unscrewed.
It will be understood that there is one of these plates for each extensible
part in each hoop and that if both edges of the tyre are fitted with this device
the springs or extensible parts of each band are preferably located opposite to
one another so that one plate may prevent the extensible parts of both bands
from rising.
It will be also understood that these plates are used because the bands are
not sufficiently inelastic to secure the tyre in the rim without them, and that the
bands, strips or cords are as a whole extensible so that they are capable of being
stretched with facility to get them over the edges of the wheel rim when required.
Dated this 02.1
T
L 1001
ROBERT E. PHILLIPS. Assoc. M. Inst. C.E., M.I. Mech. E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C.. Agent for the Applicant.

page_text: Improvements in and relating to Pneumatic Tyres.
I, SIDNEY PATTISSON, of 20, Edwardes Square, Kensington, in the County of
Middlesex, Gentleman, 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 an improved device for, and method of, attaching
the covers of pneumatic tyres to wheel rims, and it consists in mounting in
one or both edges of the cover-in suitable pockets or otherwise-extensible
wires, bands, strips or cords composed partly of any suitable inextensible material
and partly of any suitable extensible material, the objects being to facilitate
the attachment and detachment of the tyre, which operation, prior to this inven-
tion, has in most cases been attended with difficulty requiring the use of levers
or other devices which tend to strain the wires and injure the rims and tyres,
to render the tyre automatically adjustable to wheel rims of slightly differing
sizes, and to provide for the taking up of any slack in the wire band or other
ligature which may result from strain of the ligature deflation of the pneumatic
tube or otherwise.
The inextensible part of the band may consist of a length of wire, cord, gut
or like material, and the extensible part of the band preferably takes the..form
of a spirally wound metallic spring.
To prevent the edges of the tyre from lifting in a wheel rim i.e. to prevent
the undue extension of the extensible part of the band a plate or its equivalent
is employed to hold the said extensible part in place and is locked down by a
screw or its equivalent.
In the accompanying drawing which illustrates this invention;
I
Figure 1 is a view in transverse section of a tyre embodying this invention.
Figure 2 is a broken view in circumferential section on line of Figure 1.
Figure 3 is a view in transverse section shewing an alternative method of
locking the extensible part of the band to the rim, and
Figure 4 is a view in side elevation of one of the locking plates employed
in the construction illustrated by Figure 3.
Throughout the views similar parts are marked with like letters of reference.
At the edges of the cover A are formed suitable pockets in which are mounted
extensible bands, strips or cords. Each baud, strip or cord is made of two or more
parts B and B, the part B being inextensible or unstretchable and the part B
being extensible or elastic. The part 1 consists of a straight length of wire,
cord gut or other suitable material, and the part B of a coil of hard or tempered
wire forming a spring. In practice I find that a band, strip or cord composed
of one inextensible and one extensible part answers all purposes, though my
invention comprises making each band, strip or cord of more than one extensible
part.
The two parts B and B are connected together in any suitable manner a con-
venient one being to form the part B with headed ends which engage the
coils of the spring as shown by Figure 2.
To prevent undue expansion or buckling of the part or parts B when the
tyre is inflated and running upon a road a plate C as shown by Figures 1 and 2,
or two plates C. C, as shown by Figures 3 and 4 are adapted to hold the exten-
sible parts of the two bands in place and to be locked down thereon in any
suitable manner, a convenient way of effecting this when a single plate is used

page_text: is to pass the stem Z of the valve through the plate C and lock it down by the
nutz thereon.
e
If two separate plates C, C, are used as shown by Figures 3 and 4 they are
each provided with one or more shanks or studs adapted to pass through holes
in the wheel rim Y and to he locked thereto by the milled nuts c'. The holding
or locking plates C, C, must be so constructed as not to prevent the spring B
from expanding for the purposes hereinbefore mentioned.
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) The combination with a pneumatic tyre, of an extensible band wire or
other ligature mounted in a pocket in the edge of the cover and consisting of
two or more parts one of which is extensible and elastic together with a locking
or holding plate adapted to engage the extensible part, as and for the purposes
set forth.
(2) A pneumatic tyre attached to its wheel rim by means of wires, bands or
strips mounted in the edges of the cover, each consisting of two or more parts,
one of which is extensible and elastic and is held to the wheel rim by one or
more locking or holding plates, as and for the purposes set forth.
Dated thia 92rd dawr of August 1898
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M.I. Mech. E.,
Chartered Patent Agent.
70, Chancery Lane, London, W.C., Agent for the Applicant.