Improvements in the Construction of Hollow Rims for the Wheels . of Velocipedes and similar Vehicles.
Year: 1892

page_text: Date of Application, 8th Oct, 1892
Complete Specification Left, 14th Dec., 1892-Accepted, 14th Jan., 1893
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Hollow Rims for the Wheels
. of Velocipedes and similar Vehicles.
I CHARLES ANDREW EDWARD TALBOT PALMER, trading as The St. Georges
Engineering Co. of Pope Street, Birmingham, Cycle Manufacturers, do hereby
declare the nature of this invention to be as follows:-
My invention relates to an improved construction of hollow rim for the wheels of
cycles and similar vehicles.
In constructing my improved rim I take a strip of steel of the necessary width
and length, and bend the edges of the strip back on itself and then up at right
angles thereto. I then bend this strip into a crescent shape, the edges of the strip
I then take a strip
forming inwardly projecting flanges below the edges of the rim.
of metal, either entirely flat, or flat at the edges and having a concave curve in its
centre, and I place this strip round the rim resting on the projecting flanges
thereof. The two parts are then brazed or hard soldered together. One or other
of these pieces may be thickened to receive the heads of the spokes.
1000
ROBT. ED. PHILLIPS, M.I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Construction of Hollow Rims for the Wheels
of Velocipedes and similar Vehicles:
I CHARLES ANDREW EDWARD TALBOT PALMER, trading as The St. Georges
Engineering Company of Pope Street Birmingham, Cycle Manufacturers, 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:—
My invention relates to an improved construction of hollow rim for the wheels of
cycles and similar vehicles, and it has for its object facilitating the manufacture of
such rims.
According to my improved construction I take a strip of steel of the necessary
width and length and by rolling or drawing, or by both, I bend the edges of the
strip back on itself and then up at right angles, or approximately right angles,
thereto. This strip so fashioned is then rolled or drawn into a crescent section to
form the shell of the rim, the edges of the strip forming inwardly projecting flanges
below the edges of the rim. then take another strip of metal, either entirely
flat, or flat at the edges and having a concave curve in its centre, and I place this
strip round the crescent-shaped piece forming the shell of the rim, so that it rests
on the projecting flanges thereof. The two parts are then brazed or hard
soldered together forming a hollow rim. One or other of the pieces forming the
rim may be thickened to receive the heads of the spokes.
In the accompanying drawing which illustrates some methods of carrying my
invention into effect. A designates the strip of metal forming the shell of the
rim, and a, a, the inwardly projecting flanges thereof, and B designates the inner
strip resting on the inwardly projecting flanges a, a, of the part A.
Figures 1, 2, and 5 illustrate various sections of hollow rims constructed
according to my invention.

page_text: Figure 3 illustrates a modification thereof in which the edges of the strip B are
bent outwards to engage with the turned over edges of the strip A forming the
shell of the rim.
Figures 4 and 6 illustrate modifications in which the strip B rests on projections
or shoulders a', a', formed in the strip A under the turned over edges of the said
strip.
This construction is useful in the manufacture of light rims as the strip B is
more securely held in position during the operating of brazing or soldering.
I do not limit myself to the production of hollow rims of the particular sections
illustrated by the accompanying drawing only, but hold myself at liberty to make
hollow rims of any shape in cross section in which my particular construction is
available.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed I declare that what I
claim is :-
1. The improved construction of hollow rim, as set forth.
2. A hollow rim consisting of two parts, one forming the shell of the rim and
having its edges forming inwardly projecting flanges, and the other part adapted to
rest on the inwardly projecting flanges of the shell of the rim to complete the
hollow rim, as set forth.
.
3. A hollow rim consisting of two parts, one forming the shell of the rim and
having its edges turned inwardly, and the other part adapted to rest on the
inwardly turned edges of the said shell to complete the hollow rim, as
forth.
set
4. The improved construction of rim, as hereinbefore described and illustrated by
Figures 1, 2, and 5 of the accompanying drawing.
5. The improved construction of rim, as hereinbefore described and illustrated by
Figure 3 of the accompanying drawing.
6. The improved construction of rim, as herein before described and illustrated by
Figures 4 and 6 of the accompanying drawing.
Dated this 13th day of December 1892.
ROBT. ED. PHILLIPS, M,I.M.E.,
Consulting Engineer and Patent Agent,
70, Chancery Lane, London, W.C., Agent for the Applicant..