Year: 1887

page_text: Date of Application, 12th Mar., 1887
Complete Left, 3rd Sept., 1887
Complete Accepted, 21st Oct.. 1887
My Invention has for its object to replace the ordinary velocipede or bicycle by a
tricycle of perfect stability which does not require more space for its passage than a
bicycle and affords the advantage to the rider of mounting it or descending from it
with facility and safety.
According to my Invention I provide the velocipede with two driving wheels of
equal diameter placed side by side and inclined so that they converge towards each
other at their upward part, they being mounted on collars or sleeves which turn upon
a cross-shaped axle the lateral branches or pivots of which are inclined upwards and
form each an axle for one of the wheels and make an obtuse angle with a downward
extension between and joined to the said lateral branches. The converging towards
each other of the upper parts of the wheels gives a corresponding divergence of the
lower parts and a broad base upon the ground as two laterally placed points of
support are thereby obtained at the fore-part of the velocipede, another point of
support being afforded by the trailing wheel. On each of the sleeves or collars which
respectively carry the driving wheels there is mounted a bevel wheel inclined similarly
to the driving wheels and in gear at the upper part only by reason of their converging
towards each other at that part but diverging at their lower parts. The naves of
these bevel wheels are connected with the naves of the driving wheels being coupled
thereto by means of clutches which cause the transmission of the motion of either of
the driving wheels to the other of the driving wheels. These clutches have free
spaces between their engaging projections and those of the wheels in order to allow a
short mutual turning of the driving wheels when the direction of motion of the
machine is to be changed.
The aforesaid downward extension from between the axle branches is inserted into
a socket fixed on the bearer of the trailing wheel and is secured below by means of a
nut or other suitable device. The said bearer receives the trailing wheel in a forked
At the outer side the sleeves or
piece at the rear and is attached to the backbone.

page_text: collars by which the driving wheels are mounted on the axles are mounted in a fork
which terminates at the top in a pivot upon which the front end of the back-bone
freely turns as usual and at the end of this pivot the usual crosspiece or handle is
mounted for guiding the machine and it may be provided with a lever for operating a
brake as is customary.
Driving cranks and pedals are fixed at the outer ends of the sleeves on which the
driving wheels are mounted. If desired, to increase the stability of the machine two
irailing wheels may be employed and these may be either parallel or inclined to
each other.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C.,
Agents for the said Florian Tentschert.

page_text: I FLORIAN TENTSCHERT of Vienna in the Empire of Austria 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:-
My Invention has for its object to replace the ordinary Velocipede or Bicycle by a
Tricycle of perfect stability which does not require more space for its passage than
a Bicycle and can be worked from outside the wheels like a Bicycle and affords the
advantage to the rider of mounting it or descending from it with facility and safety.
I will describe the Invention with reference to the accompanying drawings which
represent Velocipedes constructed according to my Invention. Figure 1 is a side
view. Figure 2 is a vertical section on the line A B of Figure 1. Figure 3 is a
cross section of the device coupling the bevel wheels with the driving wheels. The
other Figures shew modifications and details as hereinafter described.
According to my Invention I provide the Velocipede with two driving wheels R R
of equal diameter placed side by side and inclined so that they converge towards each
other at their upward part (as shewn clearly in Figure 2) they being mounted on
collars or sleeves 17 which turn upon a cross shaped axle the lateral branches or
pivots of which are inclined upwards and form each an axle for one of the wheels R
and make an obtuse angle with a downward extension between and joined to the
said lateral branches.
The converging towards each other of the upper parts of the wheels R gives a
corresponding divergence of the lower parts and a broad base upon the ground as two
laterally disposed points of support are thereby obtained at the fore part of the
Velocipede another point of support being afforded by the trailing wheel as shewn by
Figure 2 where the three bearing points are marked 1. 2 and 3. On each of the
sleeves or collars 11 which respectively carry the driving wheels R there is mounted a
bevel wheel inclined similarly to the driving wheels R and in gear with each other
at the upper part only by reason of their converging towards cach other at that part
but diverging at their lower parts. The naves of these bevel wheels are connected
with the naves of the driving wheels RR being coupled thereto by means of
clutches PP (see Figure 3) which cause the transmission of the motion of either
of the driving wheels to the other of the driving wheels. These clutches bave free
spaces between their engaging projections and those of the wheels in order to allow
a short mutual turning of the driving wheels when the direction of motion of the
machine is to be changed. The aforesaid downward extension from between the
axle branches is inserted into a socket S fixed on the bearer of the trailing
wheel and is secured below by means of a nut or other suitable device. The said
bearer receives the trailing wheel in a forked piece at the rear and is attached to
the backbone as shewn clearly in Figure 1. At the outer side the sleeves or
collars are mounted in a fork u which terminates at the top in a pivot upon which
the front end of the backbone freely turns as usual and at the end of this pivot the

page_text: usual cross piece or handle is mounted for guiding the machine and it may be
provided with a lever for operating a brake as is customary. Driving cranks and
pedals ww are fixed at the outer ends of the sleeves 1. If desired to increase the
stability of the machine two trailing wheels may be employed and these may be
either parallel or inclined to each other.
Figures 4 and 5 shew a modification. The parts which correspond with those
shewn in the preceding Figures are marked with the same letters of reference and
require no further description.
The arrangement here illustrated shews the application of the invention when the
wheels RR are arranged and actuated as hereinbefore described but with the small
wheel in front of instead of behind them. To mitigate the shocks of the wheel
the steering rod n can be provided with a spring. The arm which guides the
steering rod at its lower part is secured to the axle as shewn in Figure 5. In this
arrangement the impetus is shewn as not being given directly to the cranks but
indirectly to each by means of the ring or loopy which is connected by trunnions
with the crank and to the guide wheels and carries at its exterior the pedal p
which can be placed higher or lower in the eyes p² shewn in figure 4. The brake is
placed behind the seat and is worked by a lever before the cross bar v.
It will be seen that all the essential features are however the same as in the
preceding Figures.
Figures 6. 7 and 8 are enlarged details which show a suitable mechanical structure
of the parts affixed to or connected with the axle and the parts are marked with
the same letters of reference as those used to indicate the same parts in the other
figures. Figure 6 is a general section. Figure 7 a view of part of the wheel k in face
view and Figure 8 a side view of the part below the fork. Ball bearings are shewn
for the bearing of the parts upon the axle. In place of the coupling clutches herein-
before described the end play can be allowed the bevel wheels by means of a slot. 1.
Figure 6 or by means of an enlarged key groove N figure 7. I do not however limit
myself to the details which I have shewn in these figures as they are not of the
essence of my Invention.
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.
-
First A velocipede having driving wheels (RR) arranged at an angle so as to
converge at top and diverge at bottom in combination with means for actuating them
from their outward sides substantially as and for the purpose hereinbefore described
and illustrated.
Second: In combination with the wheels R R arranged as hereinbefore described
and claimed the bevel wheels kk and device for coupling the same with the wheels RR
for the purpose hereinbefore described.
Third In combination with the wheels R R arranged as herein before described
and claimed the axle with a downward extension for the attachment of the frame or
support of the wheel » substantially as hereinbefore described and illustrated.
=
Fourth: The combination and arrangement of parts constituting the improved
Velocipede substantially as herein before described and illustrated respectively in
Figures 1. 2 and 3 and Figures 4 and 5 of the accompanying drawings.
Dated this 3rd day of September 1887.