Improvements in Rotary Motors and Pumps.
Year: 1892

page_text: Date of Application, 19th Apr., 1892
Complete Specification Left. 16th Dec., 1892-Accepted, 21st Jan., 1893
PROVISIONAL SPECIFICATION.
Improvements in Rotary Motors and Pumps.
I, REGINALD HADDAN of the firm of Herbert & Co. Patent Agents of
18 Buckingham Street Strand W.C. Londou do hereby declare the nature of this
invention a communication to me from abroad by Ferdinand Schröder of Pritzwalk,
Brandenburg Germany, Brick Manufacturer, to be as follows:-
This invention consists in an improved construction of engine suitable for use as
a motor or as a pump. The engine comprises a cylindrical casing and a hollow
shaft concentric therein, the one of these parts being movable the other stationary
or movable in a reverse direction. The shaft is divided in the interior by a cross
partition to separate the one end passage from the other and on the shaft is a
projecting wall forming a piston and extending along the shaft up to the two
cylinder heads which close the ends of the cylindrical casing, and extending
outward from the shaft to the inner wall of the said casing. The two passages in
the shaft are prolonged through the substance of this piston and terminate in
openings respectively on the one and other face of the piston. In the casing is a
cylindrical hollow drum which is supported in annular grooves in the end walls of
the casing and is excentrically arranged therein so that it is in contact on its outer
side with the inner side of the casing along a line parallel to the axis of each, the
inner cylinder and outer case. On its inner side this cylinder or drum is in a like
manner in contact with the shaft or with a sleeve surrounding the shaft. This inner
cylinder is provided with a longitudinal slit of sufficient width through which the
piston passes.
The rotation of the rotary element of the system produces alternately increasing
and diminishing spaces on each side of the piston which operate to forward the fluid
pumped by such action, or if the machine be used as a motor the passage through
it of the motive fluid causes a distension of the spaces which operates to give a
rotary movement to the rotary element of the system.
Dated this 19th day of April 1892.
0
HERBERT & Co.,
Agents to Applicant.
COMPLETE SPECIFICATION.
Improvements in Rotary Motors and Pumps.
I REGINALD HADDAN of the firm of Herbert & Co., Patent Agents of
18 Buckingham Street Strand W.C. London do hereby declare the nature of this
invention a communication to me from abroad by Ferdinand Schröder of Pritzwalk,
Brandenburg, Germany Brick Manufacturer and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:
This invention consists in an improved construction of engine suitable for use as
a motor or as a pump. The engine comprises a cylindrical casing and a hollow shaft
concentric therein, the one of these parts being rotarily movable, the other
stationary or rotarily movable in the reverse direction. The hollow in the shaft is
divided in the interior by a cross partition to separate the one end passage from the
other and on the shaft is a radially projecting longitudinal wall forming a piston
and extending along the shaft up to the two cylinder heads which close the ends of
the cylindrical casing, and extending outward from the shaft to the inner wall of
the said casing. The two passages in the shaft are prolonged through the substance
017

page_text: of this piston and terminate in openings respectively on the one and other face of
the piston.
In the casing is a cylindrical hollow drum which is supported in
annular grooves in the end walls of the casing, and is eccentrically arranged therein
so that it is in contact on its outer side with the inner side of the casing along a line
parallel to the axis of each, the inner cylinder and outer case. On its inner side
this cylinder or drum is in a like manner in contact with the shaft or with a sleeve
surrounding the shaft. This inner cylinder is provided with a longitudinal slit of
sufficient width through which the piston pasšės.
The rotation of the rotary element of the system produces alternately increasing
and diminishing spaces on each side of the piston which operate to forward the fluid.1
pumped by such action or if the 'machine be used as a motor the passage through it.
of the motive fluid causes a distension of the spaces which operates to give a rotary
movement to the rotary element of the system.
"The improved machine which will serve either as an engine or pump is shown in
the annexed drawings which illustrate that form of the machine in which the shaft 1
is stationary and the cylinder revolves:
Fig. 1 is a longitudinal vertical section of the machine.
Fig: 2 is a horizontal section thereof on line E F Figs. 1 and 3.
Fig. 3 is a vertical section on line A B Fig. 1.
Figs. 4. 5 and 6 are cross sections showing the parts in different successive 2
positions.
"
Fig. 7 is a view of the inside of one of the cylinder heads.
Fig. 8 is a section thereof with part of the cylinder.
The shaft d is fixed in the standards ii and is provided with the passages 7 and h
divided by the partition a. f is the wall extending from the shaft d and having the 2
two passage ways y and communicating respectively with the passages g and hand
opening respectively in different sides of the wall f. e is the sleeve surrounding the
shaft d. c is the inner cylinder with slot for the passage of the wall, this cylinder
being carried in grooves in the rings r. The grooves are cut excentrically in the
rings and the latter are mounted excentrically in the heads of the cylinder a 3
so that by setting these rings properly the groover may be placed more or less
excentrically in the heads band consequently the cylinder c be brought to bear
more or less tightly against the rib of packing inserted in a groove along the
cylinder a where the latter is in contact with the cylinder c. The faces of the
wall are made concave to allow the edges of the slot in the cylinder. c to fit 3
sufficiently tightly against them.
Supposing power to be applied to revolve the cylinder a in the direction of the
arrow Fig. 3, the space 4 will continually increase in size causing a suction in the
feed pipe while the space 5 diminishes causing pressure in pipe h. As
the cylinder a completes a quarter turn the space 6, decreasing, comes also into 4
communication with the opening and produces pressure in h. During further
movement of the cylinder a the space 5 disappears, the space 4 attains its maximum
and the space 7 is enlarged causing suction from opening y (Fig 5). 'During
further movement the suction space 5 is gradually produced, the space 4 beginning
to contract comes into communication with the opening. The space 6 disappears 4
while the space 7 having nearly attained its maximum begins to lose communication
with the opening y. The machine thus serves as a suction and force pump.
If a motive fluid such as steam a forced in under pressure at pipe and
opening the spaces fed at y expand and those brought into communication with
opening contract the result being to revolve the cylinder a. The position of the
edges of the openings y and z regulate the cut off of steam, expansion and residual
cushioning.
Having now particularly described and ascertained the nature of this said inven-
tion and in what manner the same is to be performed 1. declare that what I'
claim is;
In a rotary machine suitable as a pump or motor the combination of a cylinder a

page_text: shaft in the axis thereof a radial wall on said shaft extending to the inner wall of
said cylinder passage ways in said shaft having each a port one on one side and the
other on the other side of said radial wall, and an excentrically journalled inner
cylinder slit for passage of said radial way and touching with its outer surface the
5 inner surface of the outer cylinder and with its inner surface the outer surface of
the shaft or of a sleeve thereon.
Dated this 16th day of December 1892.
HERBERT & Co.,
18, Buckingham Street, Strand, London, Agents to Applicant