Improvements in Pneumatic Wheels for Cycles, Invalid Carriages, and other Vehicles.
Year: 1894

page_text: Date of Application, 27th Feb., 1894-Accepted, 31st Mar., 1894
COMPLETE SPECIFICATION.
Improvements in Pneumatic Wheels for Cycles, Invalid Carriages,
and other Vehicles.
I, MAX THEODOR AUGUST KANDLER of 76 Weststrasse, Leipzig, in the
German Empire, Engineer, 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 :-
The object of this invention is to construct wheels for cycles, invalid carriages
and other vehicles in such manner as to render them elastic in the nave or
central part by means of pneumatic ring tubes interposed between the nave and
axle box, a slot in a disc on the latter engaging with a carrier bolt from the
nave which has a guide for the disc and thus to obtain the advantages of the
wheels fitted with the so-called pneumatic and cushion tyres but without their
disadvantages which consist in liability to damage and undue wear. My
improvements are applicable to wheels with any suitable form and construction
of tyre.
Figure 1 of the accompanying drawings is an axial longitudinal section through
a cycle wheel nave of my construction and Figure 2 a transverse section of
same.
A is the inner axle upon which the steel cones I are screwed and which is
secured in the fork ends G of the cycle by the nuts N. Mounted on the axle A
and cones I and capable of turning freely thereon with interposed steel balls K
is the axle box or sleeve D. Upon the latter is screwed or otherwise fastened
the sprocket wheel or cog wheel Z operated by the rider. The sleeve D is
provided with a central disc D' which is formed with a carrier slot wherein
engages a carrier bolt F. This latter is by a screw H fastened to a ring C
which forms a guide for the disc D¹ the latter being held laterally by the ring
cover C and screws C. The cover is detachable for facilitating fitting.
The ring guide C is provided with flanges or lugs C² for attaching thereto the
nave E which is by preference in two halves for facilitating fitting. The spokes S
are attached to the nave E. The spring P covers an oil hole Q.
B B are two ring tubes or hollow rings made of rubber or the like interposed
between the nave E and the sleeve D and capable of being inflated through the air
valve fitting R.
When the rider sets the axle sleeve D in rotation by means of the wheel Z the
carrier disc D' will carry along the bolt F and with it the nave E with spokes S
and wheel rim, the slot in the disc permitting the necessary vertical play or move-
ment and the disc D' being able to move in its guide C. If the wheel receives a
concussion it will be transmitted from the nave E to the elastic ring tubes B, and
the sleeve or axle box D and axle will be supported elastically on the ring tubes B.
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 application and use of elastic ring tubes interposed between the nave of
the wheel and the axle box or sleeve the latter having a disc which is guided by a
part in the nave so that it can move radially therein and has a slot wherein works
a carrier bolt fixed to the guide or nave and so transmits rotary motion from the

page_text: sleeve to the nave substantially as set forth whereby the axle and axle box are
elastically supported.
2. The construction of elastic pneumatic wheel nave shewn and described.
Dated this 27th day of February 1894.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.