Improvements in Rotary Engines.
Year: 1898

page_text: Date of Application, 17th Oct., 1898-Accepted, 4th Mar., 1899
COMPLETE SPECIFICATION.
Improvements in Rotary Engines.
I, ABRAILAM JOHANNES LAMBERTUS HAVERKAMP, of 78, Rokin, Amsterdam, in
the Kingdom of Holland, Merchant, 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:-
This invention relates to an engine of the kind in which the piston does not
make a reciprocating motion, changed to a rotary motion by means of crank and
connecting rod; but in which the motive power of water, steam, compressed air,
or the like is changed directly into rotary motion, a piston-like device serving to
receive the power.
In order that this invention may be the better understood, I now proceed to
describe the same, reference being had to the accompanying drawings and to the
letters and figures marked thereon. Like letters refer to like parts in the various
figures.
Figure 1 is a side elevation of the machine.
Figure 2 is a similar view partly in section.
Figure 3 is a projected view of the underside of the cylinder with the base
plate removed showing the diaphragm piston in a position at right angles to its
position in Figure 2 and about to rotate in the direction of the arrow; the whole
figure has been turned round through 45° after projection.
Figure 4 is a side view of the piston which is in the form of a semi-circular
plate, and Figure 5 is an end view of this piston.'
A fly wheel and pulley 4 are attached in the usual manner to the axle 1 of
the machine, which rests on the one side in the bearing 2 and on the other in
the bearing 3 of a hemispherical chamber. The bearing 3 is formed as a stuffing
box, and the end of the axle 1 carries a cone 5; the included angle of the axle
being 90°.
The cover 61 of a hemispherical chamber 6 makes an angle of 45° on the engine
frame 7. It follows that the face of the circular plate 61 forms a tangent to the
cone 5, and that in consequence the hemispherical chamber is rendered air-tight
towards one side between the plate 6 and the cone 5 if the two faces have been
well ground together.
The cone 5 has a slot passing through its apex vertically to its base see
Figs. 2 and 3 into which is exactly ground the piston 8 shown in side and end
elevation Figs. 4 and 5. This piston 8 which has the form of a plate is semi-
circular so that its curve corresponds to the form of the hemispherical chamber.
The flat edge towards the middle of the cover is pointed or "veed" as at 8' because
the piston is forced to make an oscillating motion at the rotation of the cone in
the hemispherical chamber, and has to adapt itself in all positions to the fixed
form of the hemispherical chamber. For instance its lower side passes, from the
position shown in Figure 3 in which the diaphragm plate or piston stands vertical,
and in which its lower side is entirely situated within the cone 5, gradually out
of the cone, while the other side disappears therein, until the piston protrudes

page_text: equally from both sides of the cone in a position shown in Figure 2, which is
perpendicular to that shown in Fig. 3. When the rotation is continued, the first
free side disappears in the cone and the operation described is repeated, simul-
taneously the piston makes an oscillating movement relatively to the inner face
of the cover G, the necessity for which movement will be self apparent.
The orifices for the motive power are situated at 9 and 91. According as to
whether the same are arranged on one side or the other of the plate shaped
piston 8, the piston, cone and axle (i.e. the whole machine) are rotated.
The operation of the engine on the admission of the motive power through the
orifices 9 and 91 will be evident. In the position shown in Figure 3, the piston
is driven round in the direction indicated by a double arrow, because the power
cannot act on that part of the piston which is situated in the cone. The piston S
thus moves towards the exit 10. When the part 81 of the piston is situated
between the two admission orifices 9 and 9¹ and the exit orifice 10 the power
entering through the admission orifices, causes a fresh revolution, the previous
charge escaping through 10. Upon the continuation of the rotation the operation
is repeated.
The details of the construction of the machine, for instance the attachment of
the chamber to the cover or to the frame, the construction of the stuffing box
lubricating device, etc., is without influence on the character of this invention,
and the choice of the materials rests entirely with the designer of the details.
It need not be specially mentioned that when the machine is operated by driv-
ing the axle from any outside source of power it may be used as a pump.
Having now particularly described and ascertained the nature of this said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
A rotary engine in which a cone 5, coupled to the axle 1 rotates air-tight
as regards its base & a tangential cover in a hemispherical chamber 6 arranged
at an angle of 45° and carries the flat semi circular piston 8, A-shaped at its lower
edge, and situated in a slot through the apex of the cone perpendicularly to its
base, two power admission orifices and 91 being situated closely together on one
side of the cone 5, and of the flat piston 8, the exit orifice 10 being arranged on
the other side of the same, so that the flat piston 8, fitted air tight to the inner
side of the hemispherical chamber, to the cover thereof and to the slot of the
cone 5, and making the necessary double swinging motion, shall change the
motive power directly into a rotary motion.
Dated this 17th day of October 1898.
FELL & JAMES,
Agents for the Applicant.