Year: 1899

page_text: Date of Application, 8th May, 1899-Accepted, 22nd July, 1899
I, GEORG BETSCHER, Manufacturer, of Salzig, in the Province of Rhineland
and Kingdom of Prussia, Germany, 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:-
The present invention relates to a rotatory steam engine, which has the origin-
ality, that the steam alternately acts on the two screw-formed surfaces of a rotating
piston for the purpose of avoiding dead points and in consequence of for avoiding
shocks.
The figures of the annexed drawings represent different views of the engine
and sections, through it.
Figure 1 is a longitudinal section through the steam cylinder and the two
cylinders containing the rotating slides for distributing the steam; Fig. 2 repre-
sents a top view of the cylinders; Fig. 3 a view of the cylinder, containing the
slides; Fig. 4 a section according to the line as of Fig. 1; Fig. 5 a section to
the line of Fig. 1 and Fig. 6 a section to the line y-8 of Fig. 1.
The engine substantially consists of three parts; the cylinder C, containing
the rotating piston A, and the two cylinders EE', containing the rotating distri-
buting slides or pistons K K¹.
The pistons A, K and K are fastened upon the shaft B, which transfers the
rotations of the pistons by means of toothed wheels upon the engine. The slides
or pistons K and K¹ are provided with three cuts M, M M² and Q Q' Q2 (Fig. 4
and 5), which permit the steam coming out of the boiler to enter into the
cylinders E E
The pistons are arranged upon the shaft B in such a manner, that the cuts of
the one piston and those of the other one correspond with each other. Answering
to the cuts the surface of each of the cylinders E E is provided with three steam
entrance ports or inlets J J J2 and F Fi F2 and each of the covers of the cylinder C
is provided with three steam ports G G1 G2 and H H H (Fig. 4), the latter of
which connect the cylinders E E with the cylinder C.
The steam inlets F F F and the steam ports G G¹ G2 (Fig. 5) have an aperture
of 60° against the inlets J J J2 and the steam ports H H¹ H².
In consequence of this arrangement one obtains, that, if the inlets of one of
the cylinders E El correspond with the cuts of the appendant steam distributing
piston, the inlets of the other cylinder are closed by those parts of the surface
of the rotating piston, which are situated between the cuts.
For letting off the steam, worked up of the cylinder C, there are arranged in
the cylinder C six outlets N N N2, and S S¹ S2 (Fig. 2) of which the outlets
NNN serve for the letting off of the steam, contained at the left, the out-
lets SS1 S2 serve for the letting off of the steam contained at the right side of
the piston A.
The outlets are suitably to the inlets, radially arranged upon the cylinder with
apertures of 60° (Fig. 5) in such a manner, that the outlets S S₁ S² in their

page_text: position correspond with the inlets J J1 J2 of the cylinder E (Fig. 3) and the
outlets N N N with the inlets F F1 F2 of the cylinder E' (Fig. 6).
Now the steam for example enters through the pipes F F F into the cuts
QQQ of the rotating slide or piston K' (Fig. 6) and passes from there through
the steam ports G G¹ G² (Fig. 6) into the right part of the cylinder C, in which
it acts upon the screw-formed surface P of the piston A, which it puts into
rotation.
The inlets J J J2 and the steam ports H H1 H2 of the cylinder E are in the
meantime closed by the parts UUU2, contained between the cuts M M M²
(Fig. 4) of the piston K; in the same manner the outlets S S1 S2 are closed by
the piston C (Fig. 2).
If the rotation of the pistons A K K¹ proceeds, the parts X X1 X2 of the
piston K¹ get before the inlets F F F and the steam ports G G¹ G², and prevent
the steam from getting into the right part of the cylinder C, while now the
cuts M M M³ of the piston K (Fig. 4) connect the left part of the cylinder C with
the boiler in such a manner, that the steam may enter into the left part of the
cylinder C and may act upon the screw-formed surface of the piston.
In consequence of that the surfaces of the piston A are screw-formed, the
outlets S S S are opened, when the piston continues to rotate, so that the
worked up steam, contained in the right part of the cylinder, may escape from it.
The alternate admission and exhaustion of the steam in the right and the left
part of the cylinder C repeat themselves continually.
.
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.) Rotatory steam engine, characterised by the arrangement of a rotating
piston A, having screw-formed surfaces, in a cylinder C and of two rotating
slides or pistons K K provided with cuts and contained in two cylinders E E',
which are attached to the covers of the cylinder C and connected with the inner
room of the cylinder C by steam ports for the purpose specified.
Dated this 30th day of April 1899.
For GEORG BETSCHER.
A Ittenbach.