Improvements in Rotary Pumps, Rotary Engines, and the like.
Year: 1896

page_text: Date of Application, 25th Nov., 1896-4ccepted, 20th Mar., 1897
COMPLETE SPECIFICATION.
Improvements in Rotary Pumps, Rotary Engines, and the like.
I, FRIEDRICH CLOSS of the Böblingen Sugar Works, Wurtemberg in the
Empire of Germany, Manager of Sugir Works, 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 rotary pumps, rotary engines and the like, and has for
its object a peculiar arrangement for producing a tight joint between the piston
and the casing by means of rollers loosely mounted in the ends of the piston and
for similarly producing a tight joint between the suction and pressure chambers.
In the accompanying drawings,
Figures 1-4 show a rotary pump in which the piston axis lies centrally in the
piston casing, whilst
Figures 5-6 show a pump or rotary steam engine, the piston axis of which is
arranged eccentrically to the piston case.
Figure 1 is a vertical cross section;
Figure 2 a vertical longitudinal section;
Figure 3 a side elevation and
Figure 4a horizontal section of the pump or motor;
Figures 5 and 6 two different vertical sections of a rotary pump with pistons
lying eccentrically to the casing.
Referring to Figures 1 to 4:-
The central line of the shaft E of the piston C of the pump coincides with the
central line of the lower circular part of the pump case A., and is mounted in the
bosses of the closing lids or covers B, B and if necessary rendered tight there
also by means of stuffing boxes. On both ends of the piston C rollers D are
loosely placed in recesses c, which rollers, on the rotation of the piston C, are
forced outwards by centrifugal force and by the resistance of the material to be
pumped, that is to say, they are pressed closely against the walls of the pump case
and roll forward on the saine.
In the upper part of the case A is mounted a roller F resting on the piston C
and pressed by the resistance in the pressure chamber against one side of the wall
of the upper case and fitting between the covers B, which roller, when of large
diameter, is preferably hollow, as shown in the drawings, and which automatically
provides the packing between the pressure and the suction chambers in any position
of the piston C. The piston C, and the rollers D and F, fit exactly between the
two lids or covers B B of the pump.
The pump works in the following manner:
Assuming that it rotates in the direction of the arrow shown in Figure 1, the
liquid, air or the like passes through the pipe connection, a, into the pump and out of
the same by the pipe connection a'. As there is, of course, always a greater
pressure existing in the pressure chamber of the pump than in the suction chamber,
the roller F is constantly pressed firmly against the piston C as well as against one
side wall of the upper part of the case A. In a similar manner the two rollers D
are by the pressure of the liquid pressed on the one side against the embracing arm
of the recess c of the piston, and on the other side against the piston case A auto-
matically. The rollers D thus form an entirely tight joint for the liquid or fluid