Improvements in Pneumatic Tyres and Rims for the Wheels of Velocipedes and other Vehicles.
Year: 1892

page_text: Date of Application, 1st Apr., 1892
Complete Specification Left, 30th Dec., 1892-Accepted, 4th Feb.,
1893
Improvements in Pneumatic Tyres and Rims for the Wheels of
Velocipedes and other Vehicles.
I JOHN VINCENT TAYLOR of the Castle Rubber Works Warrington in the
County of Lancaster Managing Director, do hereby declare the nature of this
invention to be as follows:-
This invention relates to improvements in pneumatic tyres and rims for the
wheels of "safety" bicycles and other velocipedes and vehicles, the principal object
being to afford a simple and efficient means for connecting the tyre to, and dis-
connecting it from the rim of the wheel.
The improved tyre is of the well known type consisting of an inner inflatible
pneumatic tube (preferably of india rubber) protected by, and attached to the
rim by means of an outer envelope or casing composed of a combination of india
rubber and canvas or other suitable woven fabric.
I make the inner inflatible tube in any well known manner and I provide suitable
means for inflating and deflating the same.
The outer casing is not made in the form of a tube but of a crescent shaped
section and of such a width as will nearly embrace the whole circumference of the
inner tube when it is inflated. It is built up in any well known manner of a com-
bination of india rubber and canvas the latter being considerably wider than the
intended width of the finished casing, and projecting beyond the edges of the
same.
These projecting edges are coated with india rubber solution or cement and then
rolled up so as to form a solid firm and hard flange or bead along each edge which
is pressed and solidified into a rectangular section and vulcanized in that form.
The rim of the wheel is preferably made of steel rolled to à concave section
forming one third of a circle or thereabouts and with two rectangular grooves or
recesses corresponding in form and size with the rectangular flanges on the
protecting casing above named the said grooves being so formed that their sides
radiate towards the centre of the circle to which the concave portion of the rim is
formed.
The outer edges of the rim are bent over or splayed so that if at any time the
tyre is deflected sideways it will not be in danger of being cut by the edge of
the rim.
The inner tube being deflated is laid inside the casing the edges of which are
then made to approach each other until their solid rectangular edges can be placed
into the corresponding grooves of the metal rim. The inner tube is then inflated
expanding the outer casing into a perfect cylindrical form and thus firmly fixing
the flanges or edges thereof in the radial grooves of the rim.
All that is necessary to detach the tyre is to deflate the inner pneumatic tube,
the walls of the casing may then be pressed together and the solid rectangular
edges of the casing can then be withdrawn from the radial grooves of the rim
leaving the inflatible tube free. I prefer to lay a strip of cloth or other suitable
material between the inner tube and the rim in the gap between the two edges of
the casing.
D
1
L
1 1000

page_text: COMPLETE SPECIFICATION.
Improvements in Pneumatic Tyres and Rims for the Wheels of
Velocipedes and other Vehicles.
I JOHN VINCENT TAYLOR of the Castle Rubber Works Warrington in the
County of Lancaster, Managing Director, 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 improvements in pneumatic tyres and rims for the
wheels of "<<
safety" bicycles and other velocipedes and vehicles, the principal
object being to afford a simple and efficient means for connecting the tyre to,
and disconnecting it from the rim of the wheel.
The nature of my said invention and the manner in which the same is to be
performed or carried into practical effect will be readily understood on reference
to the annexed sheet of drawings and the following explanation thereof.
Fig. 1 is a section of the outer casing of the tyre.
Fig. 2 is a section of the metal rim, and Fig. 3 a section of the tyre and rim
complete.
The improved tyre is of the well known type consisting of an inner inflatible
pneumatic tube (preferably of india rubber) protected by, and attached to the
rim by means of an outer envelope or casing composed of a combination of india
rubber and canvas or other suitable woven fabric.
I make the inner inflatible tube in any well known manner and I provide
suitable means for inflating and deflating the same.
The outer casing is not made in the form of a tube but of a crescent shaped
section see Fig. 1 and of such a width as will nearly embrace the whole circum-
ference of the inner tube when it is inflated. It is built up in any well known
manner of a combination of india rubber and canvas the latter being considerably
wider than the intended width of the finished casing, and projecting beyond the
edges of the same.
These projecting edges are coated with india rubber solution or cement and then
roller up so as to form a solid firm and hard flange or bead along each edge which
is pressed and solidified into a rectangular section and vulcanized in that formas
shown at a Fig. 1 on the annexed drawing.
The rim of the wheel is preferably made of steel rolled to a concave section as
shown at c Fig. 2 forming one third of a circle or thereabouts and with two
rectangular grooves or recesses corresponding in form and size with the
rectangular flanges on the protecting casing above named the said grooves being 80
formed that their sides radiate towards the centre of the circle to which the
concave portion of the rim is formed as shown at Fig. 2.
The outer edges o of the rim are bent over or splayed so that if at any time the
tyre is deflected sideways it will not be in danger of being cut by the edge of
the rim.
The inner tube f (see Fig. 3) being deflated is laid inside the casing the edges
of which are then made to approach each other until their solid rectangular
edges can be placed into the corresponding grooves d of the metal rim. The
iuner tube is then inflated expanding the outer casing into a perfect cylindrical
form and thus firmly fixing the flanges or edges thereof in the radial grooves of the
rim, as shown at sectional view Fig.. 3.
All that is necessary to detach the tyre is to deflate the inner pneumatic tube f
the walls of the casing may then be pressed together and the solid rectangular
edges of the casing can then be withdrawn from the radial grooves d of the rim c
leaving the inflatible tube f free. I prefer to lay a strip of cloth or other suitable
material between the inner tube and the rim in the gap between the two edges of
the casing as shown at g.

page_text: 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
In an inflatible pneumatic tyre the combination with an inner air tube of an
outer casing of a crescent shaped section formed with a solid rectangular flange or
bead along each edge, and a concave metal rim formed with corresponding
rectangular sided recesses the sides of which radiate towards the centre of the
circle to which the concave portion of the rim is formed substantially as herein-
before described and illustrated by the drawings annexed.
Doted this 29th day of December 1892.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.