Improvements in Wheel Rims.
Year: 1894

page_text: Date of Application, 30th Jan., 1894
Complete Specification Left, 30th Oct., 1894-Accepted, 1st Dec., 1894
PROVISIONAL SPECIFICATION.
Improvements in Wheel Rims.
I, RICHARD STAFFORD, of 52 Craven Street, Chapel Fields, Coventry, in the
County of Warwick, Engineer, do hereby declare the nature of this invention to be
as follows:-
This invention has reference to the manner in which I construct a metallic rim
for forming the wheel of an ordinary bicycle, tricycle or other vehicle, the object
of the invention being to produce a rim which will, while being simple in its
construction, not require to be connected or attached the one portion to the other
by brazing or soldering.
In carrying my invention into effect I form my rim in two independent parts one
inner bed piece and one outer binding or holding piece; the inner piece or bed strip
I make with its central portiou preferably grooved or recessed so as to form a
channel in which the tyre may conveniently be placed. The outer ends of the
inner bed piece I make in the form of hook like or bent flanges which engage with
and enter into corresponding bent over flanges or grooves formed upon the outer
portion of the rim. Thus the two pieces forming my complete rim I cause to be
embraced one with the other by means of flanges or bead like grooves turning
inwards, which I form upon the outer portion of the rim and cause to clip and
secure other flanges produced upon the ends of the inner strip. I am enabled by
this interlocking of the inner and outer flanges upon the inner and outer strips to
produce a rim which will when under tension be tightened up the one part to the
other thereby causing great rigidity when the tyre is placed in position, and the
weight brought upon the wheel from the outside.
I do not construct my inner bed piece necessarily with a groove or channel in
the centre of any particular configuration, but I modify the form of the curvature
of the bed piece together with the extent and shape of the hooking flanges to suit
the size and strength of wheel that is to be constructed and the particular kind of
tyre which is to be employed. I thus connect the two forms together by locking
them one to the other by flanged connection instead of by soldering or brazing in the
ordinary manner. I form the outer portion of the rim first by rolling and grooving
the edges in any ordinary manner adopted for like purposes, and I then place the
inner strip in position and thus produce a composite strip suitable for forming a
wheel rim of any required diameter having its own self contained connection.
I make the portions of the rim of steel, aluminium or other suitable metal, and
I attach the tyres to the wheel and make provision upon the rim for the same when
so required in any well known manner.
I do not limit the application of my invention to rims used for cycles only, but
I employ the same essential features of construction when producing wheels for
carriages and other vehicles.
Dated this 29th day of January 1894.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents for the Applicant.

page_text: Improvements in Wheel Rims.
I, RICHARD STAFFORD, of 52 Craven Street, Chapel Fields, Coventry, in the
County of Warwick, Engineer, 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 reference to the manner in which I construct a metallic rim
for forming the wheel of an ordinary bicycle, tricycle, or other vehicle, the object
of the invention being to produce a rim which will, while being simple in its
construction, not require to be connected or attached the one portion to the other
by brazing or soldering.
In the accompanying sheet of explanatory drawings, Figures 1 and 2 represent
the section of the separate parts, and Figure 3 the section of a complete rim made
in accordance with my improved system of construction.
Figures 4, 5, 6, and 7, 8, 9, are like views representing modified forms of
the rim.
In carrying my invention into effect I form my rim in two independent parts,
one inner bed piece such as Figures 2, 6 and 9, and one outer binding or holding
piece as Figures 1, 4 and 7; the inner piece or bed strip I make with its central
portion preferably grooved or recessed so as to form a chaunel in which the tyre
may conveniently be placed. The outer ends of the inner bed piece Figures 2, 6
and 9, I make in the form of hook or bent flanges which engage with and enter into
corresponding bent over flanges or grooves formed upon the outer binding or
holding piece Figures 1, 4 and 7 of the rim. Thus the two pieces forming my
complete rim as illustrated at Figures 3, 5 and 8, I cause to be embraced one with
the other by means of flanges or bead like grooves turning inwards, which I form
upon the outer portion of the rim and cause to clip and secure other flanges
produced upon the ends of the inner strip. I am enabled by thus interlocking the
inner and outer flanges upon the inner and outer strips to produce a rim which will
when under tension be tightened up the one part to the other thereby causing great
rigidity when the tyre is placed in position, and the weight brought upon the wheel
from the outside.
I do not construct my inner bed piece necessarily with a groove or channel in the
centre of any particular configuration, but I modify the form of the curvature of
the bed piece together with the extent and shape of the hooking flanges to suit the
size and strength of wheel that is to be constructed, and the particular kind of tyre
which is to be employed. I thus connect the two forms together by locking them
one to the other by flanged connection instead of by soldering or brazing in the
ordinary manner.
I form the outer portion of the rim first by rolling and grooving the edges in any
ordinary manner adopted for like purposes, and I then place the inner strip in
position and thus produce a composite strip having its own self-contained con-
nection suitable for forming a wheel rim of any required diameter. I make the
portions of the rim of steel, aluminium, or other suitable metal, and I attach the
tyres to the wheel and make provision upon the rim for the same when so
required in any well known manner.
I do not limit the application of my invention to rims used for cycles only, but I
employ the same essential features of construction when producing wheels for
carriages and other vehicles.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what mauner the same is to be performed, I declare that what I
claim is :-
1. The method of constructing a composite wheel rim from separate strips of

page_text: steel or other metal having a self-contained connection or interlocking ends,
substantially as described.
2. A wheel rim consisting of an inner bed piece and an outer binding or holding
piece, formed from separate strips of steel or other metal, having hook like or
flanged and grooved self-locking or fastening ends, substantially as hereinbefore
described and as illustrated in the accompanying drawings.
Dated this 20th draw of Ontahan 1201
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents for the Applicant.