Improvements in or connected with Pneumatic Tyres.
Year: 1893

page_text: Date of Application, 15th June, 1893
Complete Specification Left, 15th Mar., 1894-Accepted, 28th Apr., 1894
PROVISIONAL SPECIFICATION.
Improvements in or connected with Pneumatic Tyres.
I, GUSTAVE ADOLPHE SCHOTH, of 170A Great Portland Street in the County
of London, Electrician, do hereby declare the nature of this invention to be as
follows:
My invention refers to improvements as hereafter described whereby pneumatic
tyres may be removed from the wheel rims with greater facility than heretofore,
without the use of tools, or the risk of pinching or damaging the immer air tube, and
the invention offers equal advantages and facilities for replacing the tyre after such
removal.
Pneumatic tyres have heretofore been constructed with the outer covers provided
at the edges with continuous rings secured to such outer covers by canvas or other
means, and various devices have been proposed to facilitate the introduction of such
rings into the hollow of the felloe.
Now according to my invention I employ an outer cover provided with the steel
continuous rings secured to the edges of same, and I construct the rim or felloe of
the wheel with a removable flange or ring at both sides whereby upon the tyre
being deflated and such flanges or rings being removed the outer cover with its
rings and the air tube may be removed or slidden laterally off the rim and this
without twisting or straining any of the parts or compressing or pinching the air
tube, and may be replaced and the flanges refixed with equal facility.
I form the section of base of the felloe or rim, horizontal or flat and form two
gutter section channels by for example bending the edges of the flat rim downwards
and returning same upwards, always so arranging the section that the edges of the
gutters or channels do not project above the level table of the section upon which
the tyre is to be placed. In the channels are fitted removable flat or other suitable
section rings or flanges to project and form edges to retain the tyre on the rim
when in position. The removable flanges are divided at one part and may be retained
in position within the channels by a slotted hook at one end taking into a pin in the
channel and the other end of the removable flange secured by a spring bolt or pin
passing through the channel.
The flat part of the felloe may be made of single or double or hollow section and
the removable flanges may be of any required section with or without beadings to
prevent cutting of the tyre, or may have an cutward inclination, and the removable
flanges may be made in one part or in several.
Dated this 15th day of June 1893.
BREWER & SON,
London and Leeds, Agents for Applicant.
COMPLETE SPECIFICATION.
Improvements in or connected with Pneumatic Tyres.
1, GUSTAVE ADOLPHE SCHOTH of 170A Great Portland Street, in the County
of London, Electrician do hereby declare the nature of the said invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement :-
My invention refers to improvements as hereafter described whereby pneumatio
tyres may be removed from the wheel rims with greater facility than heretofore,
without the use of tools, or the risk of pinching or damaging the inner air tube, and

page_text: the invention offers equal advantages and facilities for replacing the tyre after such
removal.
Pneumatic tyres have heretofore been constructed with the outer covers provided
at the edges with continuous rings secured to such outer covers by canvas or other
means, and various devices have been proposed to facilitate the introduction of such
rings into the hollow of the felloe.
Now according to my invention I employ an outer cover provided with the steel
continuous rings secured to the edges of same, and I construct the rim or felloe of
the wheel with a removable flange or ring at both sides whereby upon the tyre being
deflated and such flanges or rings being removed the outer cover with its rings and
the air tube may be removed or slidden laterally off the rim and this without twisting
or straining any of the parts or compressing or pinching the air tube and may be
replaced and the flange refixed with equal facility.
I form the section of base of the felloe or rim, horizontal or flat and form two
gutter section channels by for example bending the edges of the flat rim downwards
and returning same upwards, always so arranging the section that the edges of the
gutters or channels do not project above the level table of the section upon which
the tyre is to be placed. In the channels are fitted removable flat or other suitable
section rings or flanges to project and form edges to retain the tyre on the rim when
in position. The removable flanges are divided and may be retained in position
within the channels by a slotted hook at one end taking into a pin in the channel
and the other end of the removable flanges secured by a spring bolt or pin passing
through the channel.
The flat part of the felloe may be made of single or double or hollow section, and
the removable flanges may be with or without beadings to prevent cutting of the
tyre or may have an outward inclination and the removable flanges may be made in
one part or in several.
My invention will be fully understood by further describing same with reference
to the accompanying drawing whereon
Figure 1 is a transverse section showing a felloe constructed and fitted according
to my invention, Figure 2 is a side elevation of a portion of same showing means for
fixing the flanges and Figure 3 is an inverted plan of Figure 2, these figures
showing a construction suitable for metal rims or wheels of velocipedes and other
light vehicles.
Figure 4 is a perspective sectional side view showing my invention applied to an
ordinary road wheel and Figure 5 is a section showing a hollow felloe or rim
according to my invention.
Similar letters of reference refer to like parts in all the figures.
A is the outer elastic cover having continuous or endless steel wire rings B
secured to the edges of same such as is common in the covers of air inflated tyres.
Referring more particularly to Figs. 1, 2 and 3, the rim or felloe is formed with a
horizontal or flat part C having on each side thereof a channel C¹ the upper edges
of which do not materially or necessarily project above the level table C of the
felloe section.
In the narrow lateral channels I fit the removable flat section flanges D to form the
edges to retain the tyre on the rim; the removable flanges D are formed with a
slight outward curve to conform somewhat with the contour of the tyre section and
may in addition be made with a bead upon their outer edges as shown at D' Fig. 5,
the curving and beading being a preventative against the tyre becoming cut by
pressure against the flange.
The flanges D are divided at one or more places in their circumference as for
example at E, Fig. 2, and according to my invention I connect the adjacent edges
of the flange sections by forming the slotted hook F on one part taking onto the
fixed pin F in the channel, while the adjacent end of the flange has a hole formed
therein, coinciding when the flange is in position, with holes formed in that part
of the channel extending below the horizontal part of the felloe; G is a pin
carried at the end of a spring piece H the tail of which is fixed to the felloe while

page_text: the pin G enters and passes through the holes in the channel C¹ and through the
flange D thereby securing the end thereof in place; H' is a finger piece on the
spring H for withdrawing the pin G and releasing the flange; H are spring
stop pins. Figure 5 shows the channels C¹ in conjunction with a hollow felloe as
aforesaid.
A prominent feature in my invention is that both the flanges and the elastic tyre
may be entirely removed and a flat rim will be presented to the road without any
projecting flanges, edges, or parts to prevent its freely travelling upon the said
flat rim, and I would have it clearly understood that although I have shown its
applicability to light metal wheels I by no means limit it to such, in fact, the
invention is applicable with even greater advantages to the road wheels of ordinary
construction having wooden rims and iron felloes as at present used on cabs,
carriages, and other vehicles and this without any alteration thereto. Referring to
the example of this application at Figure 4, C is the iron felloe as usual in road
wheels mounted on the wooden rim, C are the channels fixed by bolts or screws to
the said rim, D are the removable flanges divided at preferably three or more
places and fixed by hooks F and spring pins G as before described; the springs H
may be conveniently located say in recesses in the wooden rim at the back of the
flange D, and the finger H' projects downwards in a slot in the wooden felloe, a part
of the channel C¹ is broken away in the drawing to show the construction. By
this construction should the tyre become damaged both the removable flanges are
taken off, the tyre is slidden laterally away and the wheel is in a condition to be
used on the road without any other alteration or attention, and this may be effected
without the aid of tools or skilled assistance.
I am aware that it is not broadly new to provide troughs or channels on each
lateral edge of the rim or felloe, and it is also common to arrange the edges and
sections of the channels to come below the level of the flat or bearing part of the
rim; the sections of such channels have been of both square and curved or semi-
circular forms. I am also aware that removable rings or flanges in sections or
otherwise to retain the outer covers in position are not broadly new, nor are such
new when projecting above the table or base part of the felloe. It is not new to
form the removable rings of tubular section, neither is it new to employ a
fixed flange on one side of the felloe and a removable flange on the other side of
the same felloe.
I am not however aware that two removable side flanges as described fitted in
channels, and employed in combination with a cover having endless retaining wires
have been proposed as herein described, and whereby both the elastic tyre and
the flanges may be, removed and leave a flat metal rim suitable for road
travelling.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim as my Improvements in or connected with Pneumatic Tyres is :-
The combination with a cover having endless retaining wires therein, of a felloe
or rim having a central flat part C, to receive the elastic tyre and wires, laterally
arranged channels C', one on each side of the flat part C below or on a level with
the flat surface C, and sectional flanges D of curved flat section to take into the
said channels, together with the hooked ends F to the flanges and the eyes and
spring-carried pins H for securing the parts of flanges D in position, whereby the
removal of the elastic or pneumatic tyre and its flanges renders the wheel capable
of road travelling on its metal tyre substantially as set forth.
Dated this 15th day of March 1894.
BREWER & SON,
London and Leeds, Agents for Applicant.