and in the rim
Year: 1893

page_text: r hub and in the rim.
eing very light, possesses considerable strength and rigidity.
In the accompanying drawings,
Figure 1 is a side view.of the wheel.
Figure 2 is a section taken on the line a y Figure 1, and
Figure 3 is a side view of the nave or hub.
Like letters denote corresponding parts throughout the drawings.
The hub d is constructed with a cylindrical body, having flanges ff' at the sides
thereof, in which flanges are made a number of inclined-outs.or grooves e to receive
the wire spokes as hereinafter described.
As shown in Figures 1 and 2 each pair of spokes-a, b consist of a single wire the
middle part e of which is wound spirally around the cylindrical hub d and is passed
through the aforementioned inclined cuts or slots e in the flanges ff. It is
preferred that the spiral part e of each wire shall extend about half way round the
hub but this may be made more or less than half as desired.
The two ends of the wire forming the spokes, a and b extend from the slots e to
the rim g to which they are secured by riveting or otherwise. As seen in side
elevation, the wires a, b are situated in approximately parallel planes, but as seen
in the section Figure 2 they cross each other, the wire b passing from the right
side of the hub to the left side of the rim, and the wire a from the left side of the
hub to the right side of the rim. This construction affords increased longitudinal
strength to the hub.
The rim is a rolled ring, the transverse section of which is of the form of the
Greek letter II.
The spokes a, b are passed through holes in the flanges h of the rim
riveted thereto.
g
and are
Upon the rim g is shrunk the tyre k which is of rectangular transverse section,
with slightly protruding edges i which extend a little over the edges of the sides ĺ
of the rim and thus firmly hold the tyre in place.
Before the spokes are riveted they are put under tension to such a degree that
when in use the spokes which are below the hub will be just relieved of tension
neither being strained by pressure, nor having the tendency to become loose at the
O rivet heads.
The slots e of the nave discs may have flaring mouths in order to facilitate the
introduction therein of the spoke wire. It is not necessary for the spokes a and b
belonging to one wire to lie side by side in parallel planes, as it is obvious they
may be arranged to cross each other or to converge or diverge towards the
5 wheel rim.
In these cases the middle part of the spoke wire is wound more or less than half
a turn round the nave.
The above described mode of winding the middle part of each double spoke from

page_text: one nave disc to the other spirally around the nave in a half convolution more or
less affords the advantages that the hub is suspended in a spoke wire; the same
tension always prevails in the two spokes thereby preventing the nave assuming an
oblique position; a good strutting of the nave is obtained in the direction of the
wheel axle; and the changing of the spokes can be very easily and quickly
effected.
The form of the transverse section of the wheel rim is also important, as in the
first place it secures that the rivet heads of the spokes are quite free and accessible
without any necessity for removing the tyre, which is of importance as regards the
putting in of fresh spokes; and in the second place it permits in a very convenient
manner of the crossing of the two shanks of each spoke wire, whereby the angle
which these form with each other is augmented. and the stiffness of the nave
relatively to the wheel rim in the axial direction is thereby increased.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, as communicated to me by
my foreign correspondents, I declare that what I claim is :-
1. A wheel in which the spokes are arranged in pairs each formed of a single
wire, the middle part of which is wound spirally on the hub, and which are passed
through slots formed in the edges of the hub, for the purpose specified.
2. The rim g of II shaped transverse section, having uncovered flanges (h)
substantially as described, for the purpose specified.
3. A wheel constructed, substantially as described, with reference to the
drawings.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.