Improvements in the Rims of Cycle Wheels.
Year: 1893

page_text: Date of Application, 8th Feb., 1893-Accepted, 11th Mar., 1895
COMPLETE SPECIFICATION.
Improvements in the Rims of Cycle Wheels.
I EDWARD WARWICK Manufacturer Sheffield Works Alma Street Aston in the
County of Warwick do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
n and by the following statement :-
This invention consists of the various arrangements and combinations herein-
after described forming separate modifications of an improved wheel rim specially
suitable for use in the make up of cycle wheels, and which can also be utilized in
the make up of wheels for use on vehicles of every kind.
I will now proceed to describe in relation to the accompanying drawings the
manner in which the several modifications of my invention are produced.
Figure 1 represents an end view of a sheet of metal rolled, drawn, or otherwise
converted into a tyre receiver the flat sides are shewn broken off.
Figure 2 represents the flat sides of Figure 1 rolled, drawn, or otherwise bent
into the shape represented; by a second process.
Figure 3 represents a flat sheet of metal bent into a shape suitable for after-
wards compressing into a continuous rib.
Figure 4 represents a flat sheet or plate of metal with a continuous rib on its
underside.
Figure 5 represents the plate Figure 4 converted into the bridge shape repre-
sented.
Figure 6 represents Figure 2 rolled, drawn or otherwise formed into the shape
represented, the bridge piece Figure 5 being placed in position represented.
Figure 7 represents the second bridge piece.
Figure 8 represents Figure 2 bent over the second bridge piece.
Figure 9 represents an end view or transverse section of a complete rim herein-
after more fully described.
In carrying out the various modifications of my invention I form the first
modification as represented in a complete form at Figure 6" in the following
manner :-I take a sheet of metal of suitable width and thickness and pass it
through a tube drawing machine or through rolls or other suitable and equivalent
mechanism and by such first process form the dish or gutter a; I next by a second
process pass the dished sheet through a tube drawing machine or through rolls or
other suitable and equivalent mechanism and so turn down the sides b. c. into the
shape shewn at d. e.
:ma"
I next by a third process turn down the sides d. e. into the shape shewn at f. g.
ready to receive the bridge piece.
The bridge piece is produced in the following manner :-A flat plate or sheet
of metal h. is rolled, drawn, or otherwise produced with a continuous rib j. and
such flat plate h. is next by a second process rolled, drawn, or otherwise bent into
the gutter shape bridge piece as shewn at Figure 5.
To complete the first modification the bridge piece (Figure 5) consisting of a
continuous length of gutter would be slid in position as shewn at Figure 6 the
rib j. and the underside k. of bridge would be secured to the internal face of the
sides f. g. by the process of soldering or brazing thus producing a rigid tyre of
minimum weight and maximum strength.
By a second modification of my invention I utilize the bent sheet as represented
at Figures 1 and 2 and bend down the sides d. e. as shewn at f¹ g¹ Figure 8. I
next provide a bridge piece as shewn at Figure 7 such bridge piece being rolled,
drawn, or otherwise produced out of a flat piece of metal the bridge piece Figure 7
would be slidden into position as shewn at Figure 8 the internal face of the

page_text: sides f¹ g¹ would be afterwards amalgamated with the outer surface k' of bridge in
the manner hereinbefore described in reference to the first modification of tyre as
shewn at Figure 6...
By a third modification I reverse the action of the bridge and gutter, proceeding
in the following manner I form the bridge piece out of sheet metal of suitable
width and thickness, such sheet metal being passed through a tube drawing machine
or through rolls or other suitable and equivalent mechanism and so produced into
the pocket or chamber gutter shape as shewn at m. the folded over sides do not
meet.
'I form the outer case n. from a piece of sheet metal such sheet being passed
through a suitable tube drawing machine, or through rolls or other suitable and
equivalent mechanism by one process or by several processes so as to produce a
gutter shaped tube the upper edges being turned over as shewn at o. the lower
outer surface of the bridge is amalgamated to the internal surface of the case n.
by means of brazing or soldering, or other such like equivalent means.
The drawings represent transverse sections and it will be readily understood
that the rib j. extends the full length of the piece on which such rib is formed.
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 :-
-
1st. The making of a wheel rim in the manner illustrated and described in
reference to Figures 1, 2, 3, 4, 5, and 6.
2nd. The making of a wheel rim in the manner illustrated and described in
reference to Figures 7 and 8.
3rd. The making of a wheel rim in the manner illustrated and described in
reference to Figure 9.
4th. In the manufacture of a wheel rim the utilization of bridge pieces as
illustrated and described in reference to Figures 5 and 7.
5th. In the manufacture of a wheel rim the utilization of a hollow or pocket
shaped bridge piece as illustrated and described in reference to Figure 9.
6th. The formation of a rib on a bridge piece out of a flat sheet metal by
bending a groove in the flat metal as shewn at Figure 3 and afterwards compressing
the grooved part into a rib as shewn at j. Figure 4.
Dated this 7th day of February 1893.
ALFRED WILLIAM TURNER,
Cobden Buildings, Corporation Street, Birmingham,
Agent for the Applicant.