Year: 1897

page_text: I, SIMON PIERRE FRANCOIS LENKUL Engineer, residing at The Haga
Netherlands, Van Swietenstraat 81 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 a new form of tangentwheels of which all the spokes are
fastened to the same flange of the hub and of which all the spokes lie in the same
plane. Fig. 2 on the accompanying drawing shows an usual hub of a tangent-
wheel. The spokes S are fastened to the two flanges f of the hub h; thus the
spokes are spread out at the hub. The forkends e rest on the spindle i. The
spokes of my tangentwheel are not spread out at the hub. Fig. 3 shows the hub
of this tangentwheel of my invention. The flange f is placed in the middle of
the hub h and to this flange are fastened all the spokes S. The forkends e rest on
the spindle . It is true that this tangentwheel is in a bad condition, if a bending
moment, indicated by the forces k, applies to the spindle, but nevertheless it will
be possible to make this tangentwheel strong enough.
Fig. 1 shows the side elevation of such a tangentwheel, being the frontwheel
of a bicycle (Fig. 2 and Fig. 3 are designed on a larger scale than Fig. 1). This
tangent wheel has 32 spokes and all these spokes are fastened in the usual manner
to the flange f and also in the usual manner to the rim r, which is not indicated
here. All these spokes lie as much as possible in the same plane and are twisted
through each other and each of them is connected in the usual manner with four
other spokes. For example the spoke S is connected at the places a, b, c, and d
with four other spokes. This gives a considerable strength to this wheel, a strength
which is however diminished, because all the spokes lie in the same plane and are
not spread out at the hub.
The advantages derived from this invention are first that it is easy to clean the
hub and to give oil to the bearings, second that the air resistance of such a wheel
is less than that of an universal tangentwheel, third that this wheel is more
beautiful, fourth that it is possible to place the bearings and the forkends nearer to
the middle of the hub, which is of some importance specially for the bicycles of my
applications numbered 26517/96 and 7106/97 and placing these forkends and these
bearings nearer to the middle of the hub, the wheel will be stronger. However
this need not be declared further. A modification of this tangentwheel is a
tangentwheel of which the spokes are spread out at the rim but not at the hub.
This modification need not further be declared because it is very simple. The
spokes namely in an usual tangent wheel being spread out at the hub and not at
the rim, the spokes of this modification are spread out at the rim and not at the
hub and for the rest all things are the same.

page_text: Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
A tangentwheel of which the spokes are not spread out at the hub and are
fastened to but one flange of the hub.