Improvements in or connected with Pneumatic or Inflatable Tyres for Cycles and other Vehicles.
Year: 1893

page_text: Date of Application, 4th Aug., 1893
Complete Specification Left, 3rd Oct., 1893-Accepted, 4th Nov., 1893
PROVISIONAL SPECIFICATION.
Improvements in or connected with Pneumatic or Inflatable Tyres
for Cycles and other Vehicles.
I, RICHARD UNDERHILL of 59 Plough Road, Battersea, London, S. W., Cycle
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention has for its object improvements in or connected with pneumatic
or inflatable tyres for cycles and other vehicles, whereby the tyre can be readily
attached to or detached from the rim or felloe of the wheel when desired.
According to my invention I provide an appliance or device whereby the tyre is
kept attached to the rim by a tensional strain exerted upon the wires that pass
around the outer cover of the tyre, said strain being produced by the extension of
the appliance or device.
The appliance or device I employ for effecting my purpose may consist of a pair
of curved slides, to the outer extremities of which the wires of the tyre-cover are
attached, and these slides are arranged to lie within the rim or felloe of the wheel
and are capable of moving towards, or away from, each other by means of links or
levers pivotted to the inner ends of the curved slides and controlled by an extension
screw to which the other ends of the said links or levers are pivotted. The
extension screw passes loosely through a hole formed in the rim or felloe of the
wheel and projects on the inside thereof where it receives, and is operated by, a
suitable nut.
By turning this nut in one direction the extension screw is caused to draw the
ends of the curved slides towards each other through the intervention of the
before-mentioned links or levers and the wires of the outer cover thereby become
tensionless and permit the tyre to be readily removed from the rim; but by turning
the nut in the opposite direction the curved slides are caused to move away from
each other, or extend, and a tensional strain is thereby exerted upon the wires and
the tyre is thus firmly held attached to the rim or felloe.
D
Aura 1902
MELLERSH-JACKSON,
WM.
75, Chancery Lane, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or connected with Pneumatic or Inflatable Tyres
for Cycles and other Vehicles.
I, RICHARD UNDERHILL of 59, Plough Road, Battersea, London, S. W., Cycle
Engineer, 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 has for its object improvements in or connected with pneumatic
or inflatable tyres for cycles and other vehicles, whereby the tyre can be readily
attached to or detached from the rim or felloe of the wheel when desired.
According to my invention I provide an appliance or device whereby the tyre is
kept attached to the rim by a tensional strain exerted upon the wires passing around
the outer cover of the tyre, said strain being produced by the extension of the
appliance or device.
In order that my said invention may be fully understood and readily carried into

page_text: effect, I will proceed to describe the same more fully with reference to the drawings
hereunto annexed.
Figure 1 is an elevation and Figure 2 a longitudinal section shewing a portion of
the tyre and rim of a cycle wheel with my invention applied thereto. In these
figures the parts are in the position they occupy when the appliance or device is
extended and the tyre secured to the rim of the wheel.
Figure 3 is a similar view to Figure 2 but with the parts in the position
they occupy when the appliance or device is contracted to permit of the tyre being
detached.
Figure 4 is a side elevation and Figure 5 a plan of the appliance or device
shown separately, the ends of the retaining wires being, however, shewn in
Figure 5 so that the manner in which they cross each other can be clearly seen.
The appliance or device consists of a pair of curved slides a, a, which, in the
construction shewn, are T shaped in cross section and have their outer ends a¹ a¹
bent up and formed with holes for the reception of the wires of the outer cover g.
The ends of each of these wires cross one another as shewn at Figure 5 so that the
left hand ends are attached to the right hand slide and the right hand ends to the
left hand slide. The slides are capable of moving towards or away from each
other by means of links which are pivotted at to the inner ends of the
said slides and at 2 to the flattened or enlarged portion of, an extension
screw c.
When the appliance or device is in use, lies between the air-tube d and rim e,
and the extension screw passes loosely through an aperture or hole e' formed in said
rim and projects on the inside diameter thereof where it receives a nut c by which
the appliance or device is operated.
When the nut is turned in one direction, it causes the extension screw c to draw
the links b down, thereby forcing apart the curved slides a into the position shewn
at Figure 2. The appliance or device thus becomes extended and a tensional strain
is exerted upon the wires which accordingly firmly retain the tyre to the wheel.
But when, after the air-tube has been disinflated, the nut c2 is turned in the opposite
direction the screw raises the links and causes the curved slides to approach
each other as seen at Figure 3. The appliance or device thus becomes contracted
and the tensional strain is taken off the wires f which are consequently loosened
and offer no impediment to the detachment of the tyre together with the appliance,
after the nut e² has been removed from its screw.
As will be seen on reference to Figure 2 the appliance should be so constructed
that when in its extended position none of the parts protrude beyond the external
diameter of the rim of the wheel.
It will be found advantageous to affix a short length of canvas or other suitable
material to the lower portion of the air-tube where it comes in proximity to the
appliance so as to prevent abrasion of the air-tube by the appliance when the
wheel is in use.
By my invention not only can the tyre be very easily and expeditiously attached
to or detached from the wheel without the use of any tool; but its attachment is
quite independent of inflation, and consequently should the air-tube become
punctured, the machine can still be ridden without the tyre becoming detached.
Although I have shewn and described a nut and screw for operating my
appliance or device it is obvious that any other suitable contrivance may be
employed for the purpose without departing from the nature of my invention.
I would likewise state that my invention is not only applicable to cycle wheels
but also to the wheels of other vehicles to which it can be applied in a manner
analogous to that already described.
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 1
claim is
1. The use of an appliance or device, constructed substantially as bereinbefore

page_text: described, whereby a tensional strain can be produced upon the retaining wires of
the tyre by the extension of said appliance or device, as and for the purpose
specified.
2. The appliance or device for enabling a tyre to be readily attached to or
detached from the rim of a wheel, consisting of a pair of curved slides, to which the
retaining wires of the tyre are attached, said slides being capable of shifting
towards or away from each other under the influence of levers or links that are
controlled by a nut and screw or equivalent means substantially as hereinbefore.
described and shewn by the annexed drawings.
3. My improvements in or connected with pneumatic or inflatable tyres for
cycles and other vehicles, substantially as hereinbefore described and shewn by the
annexed drawings.
Dated this 3rd day of October 1893
WM. MELLERSH-JACKSON,
75, Chancery Lane, London, W.C.; Agent for the Applicant.

page_text: Date of Application, 4th Aug., 1893
Complete Specification Lelt, 3rd Oct., 1893-Accepted, 4th Nov., 1893
PROVISIONAL SPECIFICATION.
Improvements in or connected with Pneumatic or Inflatable Tyres
for Cycles and other Vehicles.
1, RICHARD UNDERHILL of 59 Plough Road, Battersea, London, S. W.,
Engineer; do hereby declare the nature of this invention to be as follows:
Cycle
This invention has for its object improvements in or connected with pneumatic
or inflatable tyres for cyles and other vehicles, whereby the tyre can be readily
attached to or detached from the rim or felloe of the wheel when desired.
According to my invention I provide an appliance or device whereby the tyre is
kept attached to the rim by a tensional strain exerted upon the wires that pass
around the outer cover of the tyre; said strain being produced by the extension of
the appliance or device.
The appliance or device I employ for effecting my purpose may consist of a pair
of curved slides, to the outer extremities of which the wires of the tyre-cover are
attached; and these slides are arranged to lie within the rim or felloe of the wheel
and are capable of moving towards; or away from, each other by means of links or
levers pivotted to the inner ends of the curved slides and controlled by an extension
screw to which the other ends of the said links or levers are pivotted. The
extension screw passes loosely through a hole formed in the rim or felloe of the
wheel and projects on the inside thereof where it receives, and is operated by, a
suitable nut:
By turning this nut in one direction the extension screw is caused to draw the
ends of the curved slides towards each other through the intervention of the
before-mentioned links or levers and the wires of the outer cover thereby become
tensionless and permit the tyre to be readily removed from the rim; but by turning
the nut in the opposite direction the curved slides are caused, to move away from
each other, or extend, and a tensional strain is thereby exerted upon the wires and
the tyre is thus firmly held attached to the rim or felloe.
1000.
WM. MELLERSH-JACKSON..
75, Chancery Lane, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or connected with Pneumatic or Inflatable Tyres
for Cycles and other Vehicles.
I, RICHARD UNDERHILL of 59, Plough Road, Battersea, London, S. W., Cycle
Engineer, 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 has for its object improvements in or connected with pneumatic
or inflatable tyres for cycles and other vehicles, whereby the tyre can be readily
attached to or detached from the rim or felloe of the wheel when desired.
According to my invention I provide an appliance or device whereby the tyre is
kept attached to the rim by a tensional strain exerted upon the wires passing around
the outer cover of the tyre, said' strain being produced by the extension of the
appliance or device.
In order that my said invention may be fully understood and readily carried into

page_text: effect, I will proceed to describe the same more fully with reference to the drawings
hereunto annexed.
Figure 1 is an elevation and Figure 2 a longitudinal section showing a portion of
the tyre and rim of a cycle wheel with my invention applied thereto. In these
figures the parts are in the position they occupy when the appliance or device is
extended and the tyre secured to the rim of the wheel.
Figure 3 is a similar view to Figure 2 but with the parts in the position
they occupy when the appliance or device is contracted to permit of the tyre being
detached.
Figure 4 is a side elevation and Figure 5 a plan of the appliance or device
shown separately, the ends of the retaining wires being, however, shewn in
Figure 5 so that the manner in which they cross each other can be clearly seen.
The appliance or device consists of a pair of curved slides a, a, which, in the
construction shewn, are T shaped in cross section and have their outer ends a¹ a¹
bent up and formed with holes for the reception of the wires ff of the outer cover g.
The ends of each of these wires cross one another as shewn at Figure 5 so that the
left hand ends are attached to the right hand slide and the right hand ends to the
left hand slide. The slides are capable of moving towards or away from each
other by means of links 6b which are pivotted at to the inner ends of the
said slides and at 62 to the flattened or enlarged portion c¹ of an extension
screw c.
When the appliance or device is in use, it lies between the air-tube d and rim e,
and the extension screw passes loosely through an aperture or hole e' formed in said
rim and projects on the inside diameter thereof where it receives a nut c³ by which
the appliance or device is operated..
When the nut 2 is turned in one direction, it causes the extension screw e to draw
the links b down, thereby forcing apart the curved slides a into the position shewn
at Figure 2. The appliance or device thus becomes extended and a tensional strain
is exerted upon the wires ff which accordingly firmly retain the tyre to the wheel.
But when, after the air-tube has been disinflated, the nut 2 is turned in the opposite
direction the screw e raises the links b and causes the curved slides to approach
each other as seen at Figure 3. The appliance or device thus becomes contracted
and the tensional strain is taken off the wires which are consequently loosened
and offer no impediment to the detachment of the tyre together with the appliance,
after the nut has been removed from its screw.
As will be seen on reference to Figure 2 the appliance should be so constructed
that when in its extended position none of the parts protrude beyond the external
diameter of the rim of the wheel.
It will be found advantageous to affix a short length of canvas or other suitable
material to the lower portion of the air-tube where it comes in proximity to the
appliance so as to prevent abraision of the air-tube by the appliance when the
wheel is in use.
By my invention not only can the tyre be very easily and expeditiously attached
to or detached from the wheel without the use of any tool; but its attachment is
quite independent of inflation, and consequently should the air-tube become
punctured, the machine can still be ridden without the tyre becoming detached.
Although I have shewn and described a nut and screw for operating my
appliance or device it is obvious that any other suitable contrivance may be
employed for the purpose without departing from the nature of my invention.
I would likewise state that my invention is not only applicable to cycle wheels
but also to the wheels of other vehicles to which it can be applied in a manner
analogous to that already described.
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 use of an appliance or device, constructed substantially as hereinbefore

page_text: described, whereby a tensional strain can be produced upon the retaining wires of
the tyre by the extension of said appliance or device, as and for the purpose
specified.
2. The appliance or device for enabling a tyre to be readily attached to or
detached from the rim of a wheel, consisting of a pair of curved slides, to which the
retaining wires of the tyre are attached, said slides being capable of shifting
towards or away from each other under the influence of levers or links that arc
controlled by a nut and screw or equivalent means substantially as hereinbefore
described and shewn by the annexed drawings.
3. My improvements in or connected with pneumatic or inflatable tyres for
cycles and other vehicles, substantially as herein before described and shewn by the
aunexed drawings.
Dated this 3rd day of October 1893.
WM. MELLERSH-JACKSON,
75, Chancery Lane, London, W.C., Agent for the Applicant.