Improvements in Wheel Rims for Cycles and other Road Vehicles provided with Pneumatic Tyres.
Year: 1899

page_text: Date of Application. 24th Nov., 1899
Complete Specification laft 24th Aug 1000 Accented 10th Nov
1000
Date of Application. 24th Nov.,
Complete Specification left 24th Aug 1000
1899
Accepted, 10th Nov
4000
PROVISIONAL SPECIFICATION.
Improvements in Wheel Rims for Cycles and other Road Vehicles
provided with Pneumatic Tyres.
I, AZRIEL LIPOWSKY, of No. 614, Old Ford Road, in the Administrative County
of London, India-rubber Manufacturer, do hereby declare the nature of this
invention to be as follows;-
:-
This invention relates to improvements in wheel rims for cycles and other
road vehicles provided with pneumatic tyres; the object of it being to enable
the easy removal of the pneumatic tyre from the rim without deflating it.
It is well known that the wheel rims as now made to receive pneumatic tyres
have their edges turned up, producing what is called a bead; these beads being
of course integral with the trough or remainder of the rim, the shape of which,
by the way, for the purpose of my invention is quite immaterial. The object
of thus turning up the edges is obviously to prevent any lateral displacement of
the tyre. The tyres are held in these rims by the distension of the tyre due to
the inflation, and various auxiliary means such as circumferential wires are also
in some cases employed, so that it is impossible to remove such a tyre without
first deflating it because otherwise it cannot be got over the bead or edge of the
rim.
According to my invention, one of the edges or beads of the rim is made loose,
that is, separate from the remainder of the rim and is split transversely so that
it can be easily opened out somewhat and placed in position on the edge of the
rim or removed as and when desired. This removable edge or bead when in
position on the rim is secured to the rim by any suitable clasp such as bracelets
and the like are fitted with, or the two adjoining ends may be covered by a
short piece of tube or they may be bent downwards screw-threaded and passed
through a hole in the rim and then secured by a nut.
In order to make a good joint where the removable edge or bead joins the rim,
either the edge of the rim or the edge of the bead may be split to receive the
thin edge of the other.
It is not absolutely necessary that the whole of the edge or bead should be
removable, part only may be so made, if desired.
Dated the 24th day of November 1899.
PHILLIPS & LEIGH,
Agents for the Applicant.
Improvements in Wheel Rims for Cycles and other Road Vehicles
provided with Pneumatic Tyres.
I, AZRIEL LIPOWSKY, of No. 614, Old Ford Road, in the Administrative County
of London, India-rubber Manufacturer, do hereby declare the nature of this

page_text: 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 fastening tyres to wheel rims for cycles
and other road vehicles provided with pneumatic tyres; the object of it being
to permit of the easy attachment and removal of the tyre from the rim without
the use of tools, and injury to the inner tube.
It is well known that the rims as now made to receive pneumatic tyres have
the rim edges turned over, producing what is called a bead; these beads being
of course integral with, the trough or remainder of the rim, and the tyres are
made with endless wires at each side of the tyre so that tools have to be
employed in fixing and removing the tyre which have the drawback
of injuring the inner tube, the shape of which, by the way, for the purpose of
my invention is quite immaterial. The object of thus turning over the edges
of the rim is obviously to prevent any lateral displacement of the tyre.. The
tyres are held in 'these rims by the distension due to inflation and various auxiliary
means such as circumferential endless wires are also in some cases employed, so
that it is impossible to remove such a tyre without injuring the inner tube by
the use of tools to get it over the bead or edge of the rini, as the wires are
endless, and made of a fixed diameter to fit into the rim.
According to my invention one bead or edge separate from the remainder of
the rim is split transversely so that it can be easily opened out somewhat and
placed in position on the edge of the rim or removed as and when desired. The
removable edge or bead when in position on the rim is secured to the rim by
any suitable clasp such as a bracelet and the like, are fitted with, or the two
adjoining ends may be covered by a short piece of tube or they may be bent
downwards, screw-threaded and passed through a hole in the rim and then secured
by a nut.
In order that my invention may be the more readily understood, I hereby refer
to the accompanying sheet of drawings, in which
Figure 1 represents a side view or elevation of my improved rim with the tyre
and removable bead in position, portion of the said rim being shewn as broken
away to enable the connecting joint of the said bead to be better seen.
Figure 2 shews in detail the construction of the ends of the removable bead
forming its joint.
Figure 3 shews a section along a vertical plane in Figure 1 and enables the
outer case and the confining removable bead to be seen in position.
Figure 4 is an enlarged detail view of the top end of Figure 3, the bead however
being removed and the side of the outer case projecting, as may be seen, over
one side of the permanent rim.
Figure 5 is a detail view of a part of Figure 3.
In the figures a is the ordinary metal rim of the tyre, b is the outer cover,
e is the inner tube, d, d are the wires in the cover edges, e is the ordinary per-
manent bead of the rim of the wheel, e¹ is the detachable bead provided with a
projecting hook or catch f at one end adapted to pass into the tubular portion of
the other end of the bead and engage in and with the notch g.
In carrying my invention into effect, I arrange the outer cover b within the
rim of the wheel a having first inserted the inner tube e in position in the ordinary
way so that one of the edges of the said outer cover comes to rest against the
permanent bead of the rim e.
When I have arranged the outer cover and inner tube so as to bring the edge
of the outer cover against the permanent bead e as shewn in Figures 3 and 4
I hold the outer cover in that position, which is the position shewn in Figure 4.
I thereupon secure it by inserting the movable bead e¹ so that it comes in contact
all the way round with the edge of the outer cover, its lower projecting edge
being arranged inside the rim of the wheel in the manner shewn in Figure 3.
I then insert the projecting hook or catch f through the open opposing end of the

page_text: movable bead and cause it to engage in the notch g, whereupon the whole takes
up the position shewn in Figure 1, the outer cover being thereby securely retained
in position. The tyre may then be inflated, whereupon the edges of the outer
cover would be pressed against the beads e and e¹, maintaining the movable bead e¹
firmly in position.
When I desire to remove the outer cover instead of having to employ the
laborious process at present in use, I simply depress the catch f so as to disengage
it from the notch g and slip it out through the opposing circular open end,
Figures 1 and 2, the whole bead e¹ may then be readily removed and the outer
cover taken off.
My invention, therefore, enables a pneumatic tyre both to be removed from
the wheel and to be remounted on it with ease and facility.
The bead e¹ may be made of different shape and section from that shewn in the
drawings without departing from the nature or travelling beyond the scope of my
invention.
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. In wheels for bicycles or other vehicles a detachable bead for holding the
tyre in position capable of being readily arranged on or in the rim of the wheel
and of being readily detached therefrom. for the purpose of enabling the tyre to
be attached and/or removed, substantially as and for the purposes described.
2. In a detachable circular bead for bicycle or other wheels designed to secure
the tyre in position, a projecting hook or catch adapted to engage in and with a
notch in another part of the said bead, substantially as and for the purposes
described.
D
-
PHILLIPS & LEIGH,
No. 22, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.