Improvements in Roundabouts.
Year: 1893

page_text: Date of Application, 5th Apr., 1893-Accepted, 6th May, 1893
COME ENTE DE. DVITICATION
Improvements in Roundabouts.
I HUGO HAASE, Engineer, of Rossla-on-the-Harz in the Empire of Germany
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 purpose of this invention is to provide an improved roundabout with two or
more concentric rotary platforms turning with different speeds.
The invention is shown in the annexed drawing in which
Fig. 1 is an elevational view of the roundabout in section. Fig. 2 a plan, Fig. 3
cross section on a larger scale illustrating a method of transmitting the movement
to the different platforms. Fig. 4 is a detail view.
In Figs. 1 and 2 A is the exterior platform having running wheels firmly fixed
on the axles w and running upon rails s.
The second platform B rests upon the
running wheels aforesaid and is consequently moved with double the speed of the
first platform A when the wheels » turn.
The platform B also rests upon wheels which as they only serve to farther
support the platform B may be loose on the arbors w. The third platform C
rests upon wheels which like the running wheels r are firmly attached to the
axles w.
The wheels are of larger diameter than the wheels r so that the platform C
will turn quicker than the platform B. The exterior platform whence the move-
ment is transferred to the other platform may be actuated in various ways
for instance by electromotors, receiving their current by rubbing contact from the
centre.
It is evident that instead of three platforms as shown in the drawing, any desired
number that is to say more or less may be employed.
It will however be noticed that the above described method of arrangement may
be connected with difficulties to obtain a secure guiding of the exterior platforms A
and B because these cannot be held centrally and it would furthermore in practice
be well to consider whether the second platform should be given a speed double as
great as the exterior platform as the latter must in every case for good effect move
at a fairly quick speed.
In order to give any desired speed to the inner platforms and to give the whole a
secure centreing, the arrangement shown in Fig. 3 representing the substantial
part of the invention may be employed. F is the central arbor on which the different
platforms A B and C are arranged. The running wheels r of the exterior plat-
form A are provided with a running flange r of greater or less diameter upon
which latter the second platform B rests and the innermost platform C may also be
given any desired proportional speed by use of the running wheels f of appropriate
diameter running on the rail z on the outermost platform A. The trunnions of the
running wheels fare carried in bearing blocks i which are vertically movable in
guides on the platform B so that they always touch the rail ring z on the
platform A.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is
In a roundabout with different platforms rotating with different speeds the
arrangement consisting in placing the second platform B upon a flanger on the
running wheels r of the exterior platform and the third platform so as to rest upon
whoole £ turning in vorticelle movable buaring blacks in the second platform B and

page_text: run upon the first platform A each of the platforms being centred upon a vertical
shaft F for the purpose set forth.
Dated this 5th day of April 1893.
R. HADDAN,
Herbert Haddan & Co.,
18, Buckingham Street, Strand, London, Agent for Applicant.