IMPROVEMENTS IN WHEELS TO RUN ON RAILS OR ORDINARY ROADS
Year: 1884

page_text: I RUDOLPH FRIEDRICH HERMANN HÖVET of Hamburg, Germany, Merchant, do'
hereby declare the nature of my invention for "IMPROVEMENTS IN WHEELS TO RUN
ON RAILS OR ORDINARY ROADS," to be as follows:―
This invention relates to improvements in car wheels, to be applied to such
vehicles, which run either ordinarily on the rails of a tramway and leave the same
only occasionally for shunting and like purposes or which make use of the tramway
track only occasionally and are driven usually otherwise; and the objects of my
improvements are first, to provido such wheels with a movable flange, and second
to secure means for getting such movable flange into gear, that is, to engage the
flange into the rail groove conveniently.
Tho rim of a wheel constructed according to my invention is provided with two
parallel tires between which lays a loose flange of a larger diametor than the tires.
At that part of the rim whereon the loose Hange of the shape of a flat ring is
running, a groove is cut in the rim, thus allowing the flange, (the inner diameter of
which is larger than the diameter of the groove) to disappear between the tires
at such a place as the rim of the wheel touches flat or even ground while pro-
jecting on the upper part of the wheel: but to engage into the rail gutter when
running, on the track.
For driving out of the track the flange is to be lifted; this may bo effected by
fingers either arranged before and behind the wheel or only before or behind the
same. Such fingers are pivotted below the pivot of the wheel and raised and
lowered by. means of a lover. When the flange is lifted by means of two fingers
it is raised vertically; a flange raised by means of one finger only ascends
diagonally.
r
In some cases the tires may be made of the same material as the wheel or the
rim of the wheel thus forming projections with a groove between them for receiving
and guiding the loose flange.

page_text: I, RUDOLPH FRIEDRICH HERMANN- HÖVET, of Hamburg, Germany, Merchant, do
hereby declare the nature of my invention for "IMPROVEMENTS IN WHEELS TO RUN
ON RAILS OR ORDINARY ROADS," and in what manner the same is to be performed,
to be particularly described and ascertained in' and by the following statement :-
This invention relates to improvements in car-wheels, to be applied to those
vehicles which run either ordinarily on the rails of a tramway, and leave the same
only occasionally, for shunting purposes or the like; or which make use of the
tramway-track only occasionally, and are driven usually otherwise; and the
objects of my improvements are, first, to provide such wheels with a movable
flange; and, second, to secure means for getting such movable flange into gear,
that is, to drop the flange into the rail-groove conveniently.
I attain these improvements by the mechanism illustrated in the accompanying
drawing, in which Figure 1 is a side elevation of a car-wheel provided with my
improvements; Fig. 2 is a front elevation thereof; Fig. 3 is, also, a side elevation
of such wheel, partly in section, shewing a modification of the disengaging devico;
and Fig. 4 is a sectional front elovation thereof.
Similar letters refer to similar parts throughout the several views.
The rim a, of a wheel constructed according to my invention is provided with
two parallel tires b, between which lies a loose flange c, of a larger diameter than
the tires. At that part of the rim, whereon the loose flange c, of the shape of a
flat ring is running, a groovo is cut in the rim; thus allowing the flange, the inner
diameter of which is larger than the diameter of the groove, to disappear between
the tires b, at the point where the rim of the wheel touches flat, or even, ground
(Figs. 3 and 4), while projecting on the upper part of the wheel; but to enter the
tram rail when running on the track (Figs. 1 and 2).
To leave the tram rail, or rails, the flange c, is to be lifted. This may be effected
by fingers d, either arranged before and behind the wheel, (Fig. 1), or only before
or behind the same, (Fig. 3). Such fingers d, are pivotted below the axis of the
wheel, and raised and lowered by means of a lever e. When the flange c, is lifted
by means of two fingers d; it is raised vertically, (as shown by dotted lines in
Fig. 1); a flango c, raised by means of one finger only, ascends diagonally, (Fig. 3). ·
In some cases, the tires b, may be made of the same material as the wheel, or the
rim of the wheel; thus forming projections, with a groove between them for
receiving and guiding the loose flange.
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. The combination, with a wheel for cars and other vehicles having fixed tires
and á circumferential groove between the tires; of a loose tire guided in the groove
between the fixed tires; and mechanism, substantially as described, applied to the
lower part of the loose tire, and adapted for raising or lowering the same; substan-
tially as set forth,

page_text: 2. The combination of a wheel for cars and other vehicles having fixed tires and
a circumferential groove between said tires; a loose tire guided in said groove; a
finger, or fingers, applied to the lower part of the loose tire; and mechanism for
raising or lowering said finger, or fingers; substantially as set forth.
3. The combination of a wheel for cars and other vehicles having fixed tires and
a circumferential groove between said tires; a loose tire guided in said groove; an
inclined arm, or arms, attached to the axle; a finger or fingers pivotted to the
lower ends of said arm, or arms, and applied to the lower part of the loose tire;
and mechanism for raising or lowering the finger, or fingers; substantially as set
forth.