A NEW OR IMPROVED ROTARY ENGINE AND PUMP
Year: 1883

page_text: LETTERS PATENT to Herbert John Haddan, of Kensington, Middlesex for an
Invention of A NEW OR IMPROVED ROTARY ENGINE AND PUMP communi-
cated to him from abroad by Victor Henry Freiherr von Swaine, of
Wiesbaden, in the German Empire
PROVISIONAL SPECIFICATION left by the said Herbert John Haddan at
the Office of the Commissioners of Patents on the 3rd September 1883.
HERBERT JOHN HADDAN, of Kensington, Middlesex, " A NEW OR IMPROVED
ROTARY ENGINE AND PUMP;' a communication to me from abroad by Victor
Henry Freiherr von Swaine, of Wiesbaden, in the German Empire.
"
This invention has for its object to construct a rotary engine adapted to serve as
a pump and also as a water motor.-The improved rotary engine chiefly comprises
two equal conical tooth wheels, completely enclosed in a casing, but so, as to be
allowed to gear into each other, when rotating round their axes, no space being
left between the wheels and the walls of the casing, except that formed by the
interstices between the teeth of the wheels.
On both sides of the contact surface of the teeth a channels leads into the
interior of the casing. One of these channels serves as the suction pipe, while
the other serves as the delivery pipe of the pump.-It is of no consequence for the
working of the engine which of the channels serves for the suction pipe while
the other serves as the delivery pipe of the pump.
It is of no consequence for the working of the engine which of the channels
serves for the suction or delivery, the engine being capable to be reversed.-One
or both axles of the conical wheels are extended through the casing by means of
stuffing boxes and one of the said axles carries a pulley.
When the engine is set in motion for the purpose of serving as a pump, the
spaces between the teeth of the wheels cause the liquid to be pumped to follow
the rotary motion of the wheels. At that point, however, where the teeth again
approach their point of contact, the spaces between the teeth are gradually filled up
by the latter and the liquid is forced out of the spaces through the delivery pipe.

page_text: For the purpose of obtaining great power, the teeth are of a size out of
proportion to their base plate and reach radially far over the latter, while the axles
of the wheels are placed at a very obtuse angle to each other, which permits of a
proportionally simple construction of the casing enclosing the wheels. This casing
consists of 2 shells provided with flanges. Between these flanges and at the
upper part of the casing is situated a partition terminating in the centre of the
casing in the shape of a circular core.
>
The two axles of the wheels extending through the stuffing boxes rest with
their extremities on the base plate of the engine.
The teeth b serving to force out the water are not required to have the exact
shape of teeth over their whole flanks, for even if the teeth were of the regular
shape, the spaces between them could not be completely filled out by the gearing
of the tooth wheels into each other.
For the construction of the wheels as well as for the easier circulation of the
liquid between the teeth it is preferable that the teeth should have flanks of the
regular shape only along a small part of their length, while the other part is made
plainer and becomes gradually thinner, whereby wings are formed which, when
rotating, intermesh without comming in contact with each other.
The top, base and circumferential surface of the tooth rings pass so close to the
walls of the casing, when in the lowest position, that the liquid which drives or
which is driven is not permitted to pass between. The same is the case at the
top of the casing where the teeth or wings are separated by the above-mentioned
partition; they closely pass the partition and the walls of the casing.
°
The flanks of the wings or teeth may have the regular shape of tooth-gearing
close to their base or along the outer circumference of the winged wheel; or the
wings may be adapted to work freely, while separate bevel wheels are employed
mounted at the inner extremities of the two shafts and situated in the hollow
space of the centrul circular core of the said partition.
If the wings are tooth-shaped at the outer circumference, the same is closed
tightly, and the teeth or wings are provided with perforations leading from the
circumference towards the spaces between the rings. The rotary engine, above
described may serve for various purposes. For instance, it may be placed in the
hold of a vessel and employed for sucking in and discharging water, so as to serve
as a reaction propeller; or it may serve, when in connection with suitable
reversing gear, for steering vessels.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Herbert John Haddan in the Patent Office on the 3rd March
1884.
HERBERT JOHN HADDAN, of Kensington, Middlesex, "A NEW, OR IMPROVED
ROTARY ENGINE AND PUMP," a communication to me from abroad by Victor
Henry, Freiherr von Swaine, of Wiesbaden, in the German Empire,
This invention has for its object to construct a simple and effective rotary
engine adapted to serve as a pump and also as a water motor.
The improved rotary engine chiefly comprises two equal conical tooth wheels,
completely enclosed in a casing but so as to be allowed to gear into each other
when rotating round their axes, no space being left between the wheels and the
walls of the casing, except that formed by the interstices between the teeth of the
wheels.
On each side of the place at which the two wheels are gearing with each other
there is a channel or aperture, one serving as an inlet, and the other as an outlet.
It is of no consequence for the working of the engine which of the channels
serves for the suction or delivery, the engine being capable to be reversed.
In the further description of this invention reference will be made to the
accompanying drawings. Figs 1 to 13.
One or both axles of the conical wheels extends through the casing, and one of
the said axles carries belt pulleys (see Fig. 1) serving to drive the engine or to
transmit motion according to the use of the engine.
When the engine is set in motion for the purpose of serving as a pump, the
spaces between the teeth of the wheels cause the liquid to be pumped from the
suction chamber ƒ (Fig 4) to follow the rotary motion of the wheels.
At that point, however, where the teeth again approach their point of contact,
the spaces between the teeth are gradually filled up by the latter, and the liquid
thereby forced out of the spaces escapes through the delivery pipe f¹, Fig. 4.
For the purpose of obtaining a great effect, the teeth b (Figs 7, 8, 10, and 13)
are of a size out of proportion to their base plate a, a', and reach radially far over
the latter, while the axles of the wheels e, e¹ are placed at a very obtuse angle to
each other, see Figs 1, 3 and 6, which permits of a comparatively simple con-
struction of the casing enclosing the wheels.
.
This casing consists of two shells B, B¹, each of which is provided with a
circumferential flange. Between these flanges and at the upper part of the casing
is situated a partition d terminating in the centre of the casing in the shape of a
circular core d', see Figs. 1, 3, and 4.
The two axles of the wheels extending through the stuffing boxes rest with their
extremities in bearings supported by the base plate of the engine. The teeth b
serving to force out the water are not required to have the ordinary shape of teeth
over their whole flanks, for even if the teeth were of the regular shape, the spaces
between them could not be completely filled out by the gearing of the tooth-
wheels into each other.
For the construction of the wheels, as well as for the easier circulation of the
liquid between the teeth, it is preferable that the teeth should have flanks of the
usual shape along a small part of their length only, while the other part is made
plane and becomes gradually thinner, whereby wings are formed, which, when
rotating, intermesh without coming in contact with each other.
The top, base and circumferential surface of the tooth-wings pass so close to the
walls of the casing when in the lowest position, that the liquid is not permitted to
pass between.

page_text: !
The same is the case at the top of the casing, where the teeth or wings are
separated by the above mentioned partition d; they closely pass the partition d and
the walls of the casing.
The Banks of the wings or teeth may have the regular shape of tooth-gearing
close to their base, Figs 6 and 13, or along the outer circumference of the winged
wheel, Figs 10, 11, and 12; or the wings may be adapted to work freely, while
separate bevel-wheels are employed, mounted at the inner extremities of the two
shafts e and e¹ and situated in the hollow space of the central circular core d' of
the partition d; Fig. 1. :
,
In the modification represented by Fig. 6 this core d' is solid.
If the wings are tooth shaped at the outer circumference, the same is closed
tightly, and the teeth or wings are provided with perforations leading from the
circumference towards the spaces between the wings, which arrangement facilitates
the passage of the liquid to and from the spaces, which vary in size during the
motion of the wings.
The rotary engine above described may serve for various purposes.
For instance, it may be placed in the hold of a vessel and employed for sucking
in and discharging water so as to serve as a reaction propeller, or it may serve in
connection with suitable reversing gear for steering vessels.
CLAIMS.
1. A rotary engine or pump comprising in its construction two encased bevel
wheels, having either enlarged teeth the flanks of which are shaped like
ordinary teeth along a small part of their length only, as illustrated by Figs 10
and 13, or two sets of teeth, only one of which serves as ordinary tooth
gearing, while the other set forms extended wings, as illustrated by Fig 1.
2. In rotary engines or pumps, the combination of two flanged shells B, B¹, with a
partition & terminating in a central ring.
3. În rotary engines of the class described, the use of perforated wings, as
illustrated by Fig 10.
The whole substantially as described and for the purposes set forth.
In witness whereof I, the said Herbert John Haddan have hereunto set my hand
and seal this 3d day of March A D 1884.
HJ HADDAN (L.S.)