Improvements in Wheel Rims for Use in connection with Pneumatio and other Tyres.
Year: 1898

page_text: Date of Application, 16th Nov., 1898
Complete Specification Left, 21st July, 1899-Accepted, 23rd Sept., 1
1899
PROVISIONAL SPECIFICATION.
Improvements in Wheel Rims for Use in connection with Pneumatio
and other Tyres.
We, CHARLES THOMAS BROCK SANGSTER, Managing Director of The Cycle Com-
ponents Manufacturing Company, Limited, and ROBERT OSBORNE COWAN, Manager
of Department, both of Componentsville, Bournbrook, near the City of Birming-
ham, do hereby declare the nature of this invention to be as follows:-
This invention has relation to wheel rims or felloes for use in connection
with pneumatic and other tyres, principally of that type in which wires or other
inextensible media are employed for securing the same to the wheel circumfer-
ence, and has for its principal object, to facilitate the attachment and detach-
ment of such tyres, which it is proposed to accomplish by making the annular
lip, beading or confining edge detachable, so that when the said beading is
removed, the rim is left with an open side, which admits of the tyre being
laterally introduced or removed onto or from its seating on the rim without
having to spring or stretch one of the wires over the adjacent beading or con-
fining edging of the rim as is usual:
In carrying out one form of the invention in connection with a hollow rim,
which is of approximately a D-shape in cross section, the seating on which
the inner tube of the tyre seats itself is flat or channel-less, with one edge of
the rim having an annular and inverted U- or like shaped beading or circum-
ferential edging, whilst the other side or edge of the said rim is open or is level
with the plane of the flat tyre seating and around the edge of this open side,
the metal is fashioned into a deep but narrow sectioned channel or annular
groove, of a depth about corresponding to the height of the confining lip or
beading on the other edge, so as to thereby equalize the amount of metal on
each side of the rim and make both the sides of the same strength. A double
thickness of metal thus comes upon the outer side of the annular groove, which
forms a circumferential socket adapted to receive the tenon-like foot edge of a
detachable beading or confining lip, whose upper part is of the same cross sec-
tion and dimensions as the fast and integral lip on the opposite edge.
The said detachable lip is in the form of a band cross split at one or more
points, like a band set on edge, with the meeting ends at the split or splits drawn
together and coupled (when the detachable lip is in position) by any suitable
adjustable or other connection, such as by a tenon or tongue on the one end
taking into a socket, groove or other seating in the other end and being secured
by_a cross screw or other pin.
In operation, assuming the tyre to be upon the rim and that the detachment
is required, the ends of its detachable edging are disconnected and the removable
edging is disengaged from its circumferential socket, leaving the one side of
the rim open to admit of the lateral withdrawal of the outer and inner tubes of
the tyre bodily from the rim. In attaching the tyre, it is placed in its assigned

page_text: position upon the flat bed of the rim and there confined by re-placing the remov-
able edging and connecting and drawing together the ends thereof.
The detachable edging may be of any cross section to suit the grooving therein
and the invention is also applicable to rims for use in connection with tyres of
the "Bartlett" type having thickened edges engaging under overhanging side
beadings of the rim.
The invention admits of the use of any shape of detachable lip or edging from
a circular bead to a flat solid lip and the rim itself may be made hollow or solid
or both combined. The circumferential groove may be formed on or away from
the edge of the rim proper and may be wide or narrow as occasion requires,
and of any suitable shape. There may also be more than one groove if desired.
Dated this 15th day of November 1898.
Improvements in Wheel Rims for Use in connection with Pneumatic
and other Tyres.
We, CHARLES THOMAS BROCK SANGSTER, Managing Director of The Cyole Com
ponents Manufacturing Company, Limited, and ROBERT OSBORNE COWAN, Manager
of Department, both of Componentsville, Bournbrook, near the City of Birming-
ham, 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 relation to wheel rims or felloes for use in connection with
pneumatic and other tyros, principally to pneumatic tyres of that type in which
wires or other inextensible media are employed for securing the same to the
wheel circumference, and has for its principal object, to facilitate the attach-
ment and detachment of such tyres, which it is proposed to accomplish by making
the annular lip, beading or confining edge detachable, so that when the said
beading is removed, the rim is left with an open side, which admits of the tyre
being laterally introduced or removed outo or from its seating on the rim with-
out having to spring or stretch one of the wires over the adjacent beading or
confining edging of the rim as is usual.
Figure 1 of the accompanying drawings represents a sectional perspective view
of a cycle or like wheel rim (with a pneumatic tyre attached) provided with a
detachable tyre confining edge in accordance with one form of my invention.
Figure 2 represents a like sectional perspective view as Figure 1, but with
the tyre removed and the confining edging shown detached.
Figure 3 is a cross section, upon a slightly enlarged scale, of the rim with
the edging in position, whilst Figure 4 is a view on the same scale with the
edging removed.
Figure 5 represents a topside plan of Figure 3.
Figure 6 shows a topside plan of the body of the rim only, i.e. with the loose
edging removed.
Figure 7 is a view showing the latch fastening provided for the purpose of
connecting together the two loose ends of the removable edging and
Figure 8 is a plan of Figure 7, showing the said latch in edge view.

page_text: The same letters of reference indicate corresponding parts in the said Figures 1
to 8 of the. drawings.
.
In carrying out this form of the invention in connection with a hollow rim a,
which is of approximately a D-shape in cross section, the seating a¹ on which
the inner tube of the tyre seats itself is flat or channel-less, with one edge a³,
of the rim having an annular and inverted U, or like shaped beading or circum-
ferential fixed edging a³, whilst the other side or edge a, of the said rim is
open or is level with the plane of the flat tyre seating and around the edge of
this open side, the metal is fashioned into a deep but narrow sectioned channel
or annular groove a. of a depth about corresponding the height of the confining
lip or beading on the other edge, so as to thereby equalize the amount of metal
on each side of the rim, and make both the sides of the same strength. A
double thickness of metal thus comes upon the outer side of the annular groove,"
which forms a circumferential socket adapted to receive the tenon-like foot
edge of a detachable beading or confining lip b, whose upper part is of the
same cross section and dimensions as the fast and integral lip on the opposite
edge.
The said detachable lip is the form of a band cross split at one or more points
such as at 6, like a band set on edge, with the meeting ends at the split or splits
drawn together and coupled (when the detachable lip is in position) by any
suitable adjustable or other connection, such as by a hooked or gapped plate c
pivoted at c, to the one section or end of the band adapted to engage a headed
or like stud, carried by the other end or section, as shown in Figures 7 to 8
or the fastening may be effected by a tongue on the one end taking into a socket
groove or other seating in the other end and being secured by a cross screw or
other pin, or by a latch plate c as shown in Figures 9 to 10 pivoted to one end
of the edging engaged by a screw pin, which is passed through the other end
of the edging and engages a corresponding hole c³, in the latch plate.
In operation, assuming the tyre to be upon the rim and that its detachment
is required, the ends of the detachable edging are disconnected and the removable
edging is disengaged from its circumferential socket, leaving the one side of
the rim open to admit of the lateral withdrawal of the outer and inner tubes of
the tyre bodily from the rim. In attaching the tyre, it is placed in its assigned
position upon the flat bed of the rim and there confined by re-placing the
removable edging and connecting and drawing together the ends thereof.
The detachable edging may be of any cross section to suit the groove in the
rim and the invention is also applicable to rims for use in connection with tyres
of the "Bartlett" type having thickened edges engaging under overhanging
side beadings of the rim.
Further, both edgings or beadings of a rim may be removable so as to admit
of the attachment and detachment of a tyre from either the right or left hand
side thereof.
The invention admits of the use of any shape of detachable lip or edging from
a circular bead to a flat solid lip and the rim itself may be made hollow or solid
or both combined. The circumferential groove may be formed on or away from
the edge of the rim proper and may be wide or narrow as occasion requires,
and of any suitable shape. There may also be more than one groove if desired.
Having now particularly described and ascertained the nature of our said in-
vention, and in what manner the same is to be performed, we declare that what
we claim is: -
First: In wheel rims for use in connection with pneumatic and other tyres,
the employment in conjunction with the body of the rim, of a removable split
or cross-divided edge or edging, having a foot tongue adapted to engage with
an annular channel or socket formed round the corresponding side of the said
body with the divided parts preferably connected together by any suitable
fastening, substantially as described and set forth.

page_text: Secondly: In wheel rims having removable edgings, connecting together the
split or cross divided parts of the said edging, or the sections thereof, by the
employment of a crossing latch pivoted to the one section and engaging with or
engaged by, a pin, stud, screw or equivalent.
Dated this cut may of July
CHARLES THOMAS BROCK SANGSTER,
ROBERT OSBORNE COWAN,
By Henry Skerrett,
24, Temple Row, Birmingham, Agent for Applicants.