Improvements in the Wheels of Cycles and other Vehicles.
Year: 1899

page_text: Date of Application, 19th June, 1899-Accepted, 30th Sept., 1899
COMPLETE SPECIFICATION.
Improvements in the Wheels of Cycles and other Vehicles.
I, HERMANN JOSEF MAGIN, of Maximiliansau, in the Kingdom of Bavaria, and
German Empire, Railway Assistant, do hereby declare the nature of this inven-
tion 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 less expensive manner of constructing spring wheels
for cycles and the like, than those hitherto in use.
The essential feature of the invention is that the elastic connection between
wheel and frame is transferred from the periphery of the wheel to the centre of
the latter. Such a construction is exceedingly cheap, whilst the degree of
elasticity is very high and is retained for an exceedingly long time. The wheels
of a cycle provided with such an arrangement are, moreover, independent of the
hubs containing the ball bearings and the rim can be made extraordinarily light,
since the tyre may be made of wood or the felly be covered by linoleum or the
like.
According to my invention I arrange a solid or hollow elastic body between
a cylindrical case which is rigidly connected to the rim and the hub proper,
or some point of the frame.
On the accompanying drawing like letters refer to similar parts throughout
the several views.
Fig. 1 shows by sectional and end views the elastic body to be hereinafter
referred to, consisting of a block, or a number of discs of rubber, caoutchouc or
like material.
Fig. 2 shows a cross section of a wheel provided with the new invention.
Fig. 3 is a section of the central part of the same, taken on the line A-B of
Fig. 2.
Fig. 4 is a section of the central part of a wheel, similar to Fig. 2, but having
only three elastic bodies, and drawn full size.
In constructing the new wheel, I insert a solid elastic body A (as shown in
Fig. 1) or hollow elastic bodies A, A, (as shown in Figs. 2 and 4) between the
hub B and an outer case or drum C, and secure them to the hub by means of a
rounded wedge-shaped projection b.
Whether a solid body consisting of a number of discs, or hollow bodies consist-
ing of pneumatic rings are employed, the hub B in either case, is provided with
a high flange or disc B, to form a back support for the elastic body. A second
metal disc B, is secured by means of a screw-nut I) to the hub B, whereby the
elastic body is held laterally firmly in position. Two annular discs E and E₁,
lying between the discs B, B, and the annular body A or A₁, screwed on either
side of the case C, protect the material of the elastic body from being damaged
and also prevent lateral extension. Holes FF corresponding to each other,
assist in equalising the air pressure in the case of pneumatic rings A, A, being
employed.
For the purpose of equalising as much as possible the pressure of the various
1

page_text: pneumatic rings on the case C, seven such rings may be used, as shown in Fig. 2.
In Fig. 4 only three rings are shown..
The case C is illustrated on the drawing (Figs. 2 and 4) as being corrugated.
This form prevents the pneumatic rings and the case from sliding apart, and is
moreover stronger than a case with a smooth surface.
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:
1. An elastic wheel for cycles and other vehicles, comprising a cylindrical case
or drum (C), rigidly secured to the felly or rim of the wheel by means of the
spokes, and attached to the frame of the cycle or other vehicle by means of
elastic bodies, or body (A or A₁) secured to the hub of the wheel, substantially
as described.
T
2. Ah elastic wheel for cycles and other vehicles, comprising a corrugated or
other cylindrical case or-drum (C), rigidly secured to the felly or rim of the wheel
by means of spokes and attached to the frame of the cycle or other vehicle by
means of elastic hollow bodies, or body (AA) strengthened and protected by
annular discs (E E₁) screwed to the said case or drum (C), said hollow bodies or
body being secured to the hub of the wheel by a flange (B'), disc (B2) and screw-
nut (D), or their equivalent, substantially as described.
Dated this 17th day of June 1899: