Improvements in the Rims or Felloes of Wheels for Carrying Pneumatic Tyres.
Year: 1897

page_text: Date of Application, 3rd Mar., 1897
Complete Specification Left, 30th Nov., 1897-Accepted, 29th Jan.,
1898
PROVISIONAL SPECIFICATION.
Improvements in the Rims or Felloes of Wheels for Carrying
Pneumatic Tyres.
=
We, JOHN PEARSON, of 16, Broome Avenue, Levenshulme, Mechanical Engineer,
JOHN BENNETT PRICE, of Wyresdale, Wilbraham Road, Chorlton-cum-Hardy,
Consulting Engineer, and EDWARD TURNER WHITELOW, of 70, Deansgate,
Manchester, Patent Agent, do hereby declare the nature of this invention
to be as follows:-
Our said invention relates to improvements in or applicable to the rims or felloes
of wheels for carrying pneumatic tyres and has for its object to facilitate the
insertion and the removal of the tyre from the rim. As applied to a rim of channel
section such as are used for holding detachable tyres having inextensible or
practically inextensible edges we form at one or more places in the circumference
of the rim circumferential or approximately tangential depressions or openings.
In effect at each of these openings a portion of the side of the channel of the felloe
is cut away so that the diameter measured from that part of the depression nearest
the centre of the wheel is less than the diameter measured from the upper edge
of the channelled rim to the corresponding upper edge beyond the centre of the
wheel. This difference of diameter enables the edge of the tyre cover to be readily
lifted so that it may be worked round over the edge of the rim and thus be with-
drawn.
For each depression or opening in the side of the rim we provide an overlapp-
ing filling piece which slides circumferentially in the rim, being guided by studs
pins or bolts, and slots or grooves.
In another form of our said invention the said overlapping filling piece slides
under the tyre at right angles to the plane of the wheel when not in use.
Dated this 2nd day of March 1897.
E. T. WHITELOW, A.M. Inst. C.E.,
0, Deansgate, Manchester, Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in the Rims or Felloes of Wheels for Carrying
Pneumatic Tyres.
.
We, JOHN PEARSON, of 16, Broome Avenue, Levenshulme, Mechanical Engineer,
JOHN BENNETT PRICE, of Wyresdale, Wilbraham Road, Chorlton-cum-Hardy,

page_text: Consulting Engineer, and EDWARD TURNER WHITELOW, of 70, Deansgate,
Manchester, Patent Agent, 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:
Our said invention relates to improvements in or applicable to the rims or
felloes of wheels for carrying pneumatic tyres and has for its object to facilitate
the insertion and the removal of the tyre from the rim.
1
In the case of a rim of channel section such as used for holding detachable tyres
and covers having inextensible or practically inextensible edges we form at one
or more places in the circumference of the rim circumferential or approximately
tangential depressions or openings. In effect at such an opening a portion of the
side of the channel of the felloe is cut away so that the diameter measured from
that part of the depression nearest the centre of the wheel is less than a correspond-
ing diameter measured from the upper edge of the channelled rim to the correspond-
ing upper edge beyond the centre of the wheel. This difference of diameter gives
ready access to the edge of the tyre cover and enables it to be lifted so that it may
be worked round over the edge of the rim and thus be easily removed or put in
place.
For each depression or opening in the side of the rim is provided an overlapping
filling piece which slides in the rim being guided by studs pins or.bolts and slots
or grooves.
The accompanying drawings to which reference is hereinafter made, illustrate
our said invention in several forms.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a side elevation of part of a felloe having a circumferential depression.
Fig. 2 is a side elevation showing a tangential depression.
Fig. 3 is a plan of the felloe showing the filling piece slid back in a circum-
ferential direction.
Fig. 4 is a plan corresponding to Fig. 3 with the filling piece closing the
depression in the felloe.
Fig. 5 is a cross section through of Fig. 4.
Figs. 6 and 7 are plans showing a filling piece which slides across the plane of
the wheel.
Fig. 8 is a cross section through y-y of Fig. 6.
Figs. 9 and 10 illustrate the filling piece dished or moulded so that when in
position its external surface is approximately level with that of the felloe.
In all the figures is the felloe or rim of the wheel, b is the depression opening
or gap in the side of the rim, c is the overlapping filling piece guided by slots or
grooves c and studs or pins 2. In the form shown in Figs. 1, 2, 3, 4, 5 and 10 the
filling piece is slid in a circumferential direction as indicated by the double
headed arrows d.
The depression or opening b may be circumferential as shown in Fig. 1 or
approximately tangential as shown in Fig. 2.
In the forms shown in Figs. 6, 7, 8 and 9 the filling piece e is slid transversely
to the plane of the wheel as indicated by the dotted arrows d¹.
In the form shown in Fig. 6 the 'slots may be angular as indicated by dotted
lines at c. In this case when the filling piece c is put in position it is slid longi-
tudinally whereupon the studs will enter the lower part of the angular slot and
prevent the filling piece being pushed back under the tyre by pressure on the edge
of the filling piece.
Where it is desired that the external surface of the filling piece e shall lic level or
flush with that of the felloe that part of the filling piece e which comes opposite
to the opening is dished stamped moulded or otherwise fashioned so as to pro-
ject through and fill up the opening as shown in Figs. 9 and 10. In this latter
case the shanks of the pins or studs are made rather longer so as to enable the
filling piece to be withdrawn inwardly, from the opening before being slid back;

page_text: Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is:-
In combination with a wheel rim adapted to receive a pneumatic tyre and provided
with a gap in its periphery a sliding filling piece adapted to close and overlap the
said gap and provided with slots and headed studs extending out through the said
slots substantially as set forth and shown.
Dated this 29th day of November 1897.
E. T. WHITELOW, A.M. Inst. C.E.,
70, Deansgate, Manchester, Agent for the Applicants