An Improved Rotary Engine which can also be Used as a Pump or Meter.
Year: 1892

page_text: Date of Application, 24th June, 1892
Complete Specification Left, 22nd Mar., 1893-Accepted, 2nd June, 1893
PROVISIONAL SPECIFICATION.
An Improved Rotary Engine which can also be Used as a Pump
or Meter.
We, SIEGFRIED MARCUS, Engineer and Inventor, and EUGEN FERDINAND
BOTHE, Mechanic, both of 37 Mariahilfer Strasse, in the City of Vienna, in the
Empire of Austria, do hereby declare the nature of our invention for "AN
IMPROVED ROTARY ENGINE, WHICH CAN ALSO BE USED AS A PUMP OR
METER," to be as follows:-
This invention relates to an improved rotary engine, which can be used to like
advantage as pump, motor or fluid meter.
In contradistinction to similar constructions hitherto known, the piston which
is arranged eccentrically to the casing is so hinged to the same by an oscillating
closing plate that the piston can oscillate free on its shaft, but cannot fully rotate
around the same so that the friction between piston, closing plate and shaft or axle
is reduced to a minimum.
The engine consists of a casing, a piston, a hinged closing plate, between the
inlet and outlet, a crank shaft with centrally arranged disc, laying in a corre-
sponding recess of the casing, and to which the axle around which the piston
oscillates is eccentrically fixed.
When the
If the aforedescribed engine is to operate as motor the liquid or clastic fluid
admitted under pressure for driving the same, enters one of the inlet canals, and so
acts on the piston that the latter is driven in the opposite direction.
piston has reached the highest point in the casing, i.e. between the two canals, the
outlet is given free so that the fluid can flow through the same.
This operation is repeated at each rotation of the piston around the central
axis.
From the symmetrical arrangement of the parts of the engine it will be evident
that the same operation will be effected in the opposite direction, the fluid under
pressure entering at one canal and flowing out at the other.
The reversal of the movement can be effected by any suitable reversing device
or by means of a cock.
When the engine is driven by elastic fluid the utilization of the expansion can
be effected by one of the well known devices or by a rotary cylinder which allows
the fluid to flow through throttles, or entirely cuts off the same.
The symmetrical arrangement of this expansion device permits the reversal of
the movement. In order to reduce the friction of the expansion cylinder the same
is provided with three canals whereby it is rendered possible to reduce the rotary
speed of the same to one third of the speed of the piston which is attained by means
of suitable gearing.
If the engine is to be used as suction and force pump one of the canals must be
connected to a suction and another to a pressure pipe or tube.
If the main axle and with this the piston is turned in one or the other direction,
two spaces are formed one of which will be increased and the other decreased in size
by the further movement of the piston, whereby the cap or closing plate serves as
movable partition between the two spaces.
It will be evident that the evacuation
of the increasing space whilst the fluid in the next space is forced out through the
pressure pipe or tube. The parts of the engine being symmetrically arranged the
reversal of the driving direction can be readily effected.
Dated this 24th day of June 1892.
ATTICON PROS
ALLIS
LISON PROS
Agents for the Applicants.

page_text: Fig. 3 a transverse section of the engine.
a is the casing, b the piston, c the hinged closing plate between the inlet and
outlet, da crank shaft with centrally arranged disc located in a corresponding
recess of the casing and to which the axle around which the piston oscillates is
excentrically fixed.
If the aforedescribed engine is to operate as motor, the liquid or elastic fluid
admitted under pressure for driving the same, enters one of the inlet canals, for
instance e (Fig. 3) and acts on the piston in such manner, that the latter is driven
in opposite direction. When the piston has reached the highest point in the
casing i.e. between two canals e, f, the outlet fis given free so that the fluid can
flow through the canal f.
This operation is repeated at each rotation of the piston around the central axis.
From the symmetrical arrangement of the parts of the engine, it will be evident
that the same operation will be effected in opposite direction the fluid under
pressure entering at and escaping at e. The movement can be reversed by any
suitable reversing device, as for instance, by means of the cock g.
When the
engine is driven by elastic fluid the utilization of the expansion can be effected by
one of the well known devices, by the rotary cylinder h, which allows the fluid to
pass or throttles, or entirely cuts off the same.
The symmetrical arrangement of this expansion device also permits the reversal
of the movement in the manner previously mentioned. In order to reduce the
friction of the expansion cylinder in its casing the same is provided with three
canals 1, 2, 3, whereby it is rendered possible to reduce the rotary speed of the
cylinder to one third of the speed of the piston which is attained by means of
suitable gearing.
If the engine is to be used as suction and force pump, one of the canals must be
connected to a suction and another to a pressure pipe or tube. If the main axle,
and with this, the piston is turned in one or the other direction, two spaces are
formed, one of which will be increased and the other decreased in size by the
continued movement of the piston, whereby the cap or closing plate c serves as
moveable partition between the two spaces. It will be evident that the evacuation
of the increasing space will suck the Huid to be pumped into this space, whilst the
fluid in the next space is forced out through the pressure pipe or tube. The parts
of the engine being symmetrically arranged, the reversal of the driving direction
can be readily effected.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :
In improved rotary engines with excentrically rotating pistons the arrangement
of a partition or plate (c) between the two inlet and outlet canals (e, f) and
pivotally connecting the piston b direct to the casing (a) in such manner, that said
piston can oscillate within the limits prescribed by the oscillations of said partition,
substantially as described and shown in the drawings.
Deted this 22nd day of March 1893
ALLISON BROS.,
Agents for the Applicants.