Improvements in Rotary Blowers, Pumps, and the like.
Year: 1892

page_text: Date of Application, 19th Nov., 1892-Accepted, 31st Dec., 1892
COMPLETE SPECIFICATION.
Improvements in Rotary Blowers, Pumps, and the like.
I, JOHN FREDERICK AUGUSTUS PFLAUM, of Ashlar House, Potternewton,
near Leeds, in the County of York, Gentleman, 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 object of my invention is to construct rotary blowers, pumps, and the like
(hereafter referred to as blowers) in a more simple and efficient manner than
heretofore, whilst at the same time the friction and leakage are reduced to a
minimum.
In order that my invention may be clearly understood and readily carried into
effect, I will proceed to describe same with reference to the accompanying drawings,
in which similar letters refer to like parts in all the figures.
Figs. 1 and 2 are transverse sections of a blower constructed according to my
invention, and Fig. 3 is a longitudinal section of same, partly in elevation.
According to my invention, I construct the blower on the so-called crescent
chamber principle, in which a cylindrical drum, situated in the interior of a
cylindrical chamber, is brought round and against the interior of the said cylindrical
chamber.
AA are the cylindrical casings or chambers mounted in any convenient manner
and provided with the covers B on either end of same, which covers B have
suitable apertures B₁ therein. C is a crank shaft mounted in bearings M M¹ and
passing through the centre of the cylindrical casings A A¹. C'C' are cranks on
which are mounted the frames D D¹, which carry their respective drums E E¹.
The cranks C C are set at different positions relatively one to the other, con-
sequently the drums Ẹ E' will be moved round the interior of the casings A A¹
in different positions. Apertures F F' having faces L L' are formed in the upper
part of the casings A A', which communicate with a channel marked G H, forming
the inlet and outlet, and these apertures F F¹ are of a width equal to the length of
the casings A A¹. Through these apertures F F', and hinged at H¹ H₁_are
dividing plates J J', which are also hinged at their opposite ends to the drums EE.
at K K
It will thus be seen that the only way for the air or other fluid to pass from G
to H, or vice-versa, is round the drum or drums E E¹.
I will now describe the action of the apparatus, and for the sake of clearness
will only refer to a single blower.
The fluid to be forced along and out at the channel H is fed or drawn in at the
opposite chamber G, and as the crank C¹ carrying the drum E rotates, the said
fluid follows the drum E down inside the cylindrical casing or chamber A, until
such drum is again at its highest point, thus filling what is termed the crescent
shaped chamber, formed by the drum and cylinder. On the drum E reaching its
highest point, the hinge K connecting the dividing plate J to the drum E works
adjacent to the face L of the aperture F in the cylinder A, thus closing the inlet.
The crank C' then rocks the drum E onto the other side of the aperture F in the
cylinder A, thus connecting the cresceut shaped chamber containing the fluid with
the outlet H, and on the further rotation of the crank C¹ a similar operation of
drawing in fresh fluid from the inlet side G of the channel is performed, whilst at
the same time the contents of the chamber are forced out at the outlet H.
In the drawings I have shewn the blower in a double form, whereby a continuous
draught or flow of fluid is obtained; but when desired, single blowers may be
employed; or any number of blowers may be placed side by side and coupled
together, having their cranks at angles relatively one to the other.

page_text: The blower or blowers may be driven in either direction, so as to change the
outlet into the inlet, and vice versa as may be required.
In order to lubricate the parts whilst the blower is in motion, I make the
hinges Hand K of a hollow form, or provided with a tube as shewn, so that
the oil or other lubricant after being passed into the hinge H₁ may travel down a
small hole in the dividing plate J and into the tube or hinge K, and from thence
down a tube or other channel in the frame D onto the crank C, whereby all the
parts are lubricated from one source.
By constructing rotary blowers, pumps, and the like according to my invention,
they can be made accurately and cheaply, as the working parts can all be
machined.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
:-
1. In rotary blowers, pumps, and the like, the employment of a drum, mounted
on a crank or its equivalent within a cylinder or casing, and connected to a hinged
plate passing through an aperture in the cylinder or casing, substantially as and
for the purposes set forth.
2. In rotary blowers, pumps, and the like, the drum E with its dividing plate J
hinged at H and K, substantially as and for the purposes set forth.
3. In rotary blowers, pumps, and the like, the combination of the cylinders or
casings A A, covers B, cranks C₁C², frames D D', drums E E', apertures F F',
faces L L', channel G H, dividing plates J J₁ hinged at H'H' and K K', .all
acting substantially as and for the purposes set forth, together with any mere.
modification or modifications thereof.
4. In rotary blowers, pumps, and the like, as described, the means employed for
lubricating the working parts, substantially as and for the purposes set forth.
Dated this 10th day of November 1900
J. F. A. PFLAUM.
Brewer & Son,
London and Leeds.
J. F. A. PFLAUM.
Brewer & Son,
London and Leeds.

page_text: Date of Application, 19th Nov., 1892-Accepted, 31st Dec., 1892
COMPLETE SPECIFICATION.
Improvements in Rotary Blowers, Pumps, and the like.
I, JOHN FREDERICK AUGUSTUS PFLAUM, of Ashlar House, Potternewton,
near Leeds, in the County of York, Gentleman, 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 object of my invention is to construct rotary blowers, pumps, and the like
(hereafter referred to as blowers) in a more simple and efficient manner than
heretofore, whilst at the same time the friction and leakage are reduced to a
minimum.
In order that my invention may be clearly understood and readily carried into
effect, I will proceed to describe same with reference to the accompanying drawings,
in which similar letters refer to like parts in all the figures.
Figs. 1 and 2 are transverse sections of a blower constructed according to my
invention, and Fig. 3 is a longitudinal section of same, partly in elevation.
According to my invention, I construct the blower on the so-called crescent
chamber principle, in which a cylindrical drum, situated in the interior of a
cylindrical chamber, is brought round and against the interior of the said cylindrical
chamber.
A A' are the cylindrical casings or chambers mounted in any convenient manner
and provided with the covers B on either end of same, which covers B have
suitable apertures B' therein. C is a crank shaft mounted in bearings M M¹ and
C¹ Care cranks on
passing through the centre of the cylindrical casings A. A'.
which are mounted the frames D D¹, which carry their respective drums E E¹.
The cranks C¹ C³ are set at different positions relatively one to the other, con-
sequently the drums E E' will be moved round the interior of the casings A A¹
in different positions. Apertures F F' having faces L L' are formed in the upper
part of the casings A A', which communicate with a channel marked G H, forming
the inlet and outlet, and these apertures F F¹ are of a width equal to the length of
the casings A A¹. Through these apertures F F¹, and hinged at H'H
dividing plates J J', which are also hinged at their opposite ends to the drums E E¹.
at K K
are
It will thus be seen that the only way for the air or other fluid to pass from G
to H, or vice-versa, is round the drum or drums E E¹.
I will now describe the action of the apparatus, and for the sake of clearness
will only refer to a single blower.
The fluid to be forced along and out at the channel H is fed or drawn in at the
opposite chamber G, and as the crank C' carrying the drum E rotates, the said
fluid follows the drum E down inside the cylindrical casing or chamber A, until
such drum is again at its highest point, thus filling what is termed the crescent
shaped chamber, formed by the drum and cylinder. On the drum E reaching its
highest point, the hinge K connecting the dividing plate J to the drum E works
adjacent to the face L of the aperture F in the cylinder A, thus closing the inlet.
The crank C' then rocks the drum E onto the other side of the aperture F in the
cylinder A, thus connecting the cresceut shaped chamber containing the fluid with
the outlet H, and on the further rotation of the crank C¹ a similar operation of
drawing in fresh fluid from the inlet side G of the channel is performed, whilst at
the same time the contents of the chamber are forced out at the outlet H.
In the drawings I have shewn the blower in a double form, whereby a continuous
draught or flow of fluid is obtained; but when desired, single blowers may be
employed; or any number of blowers may be placed side by side and coupled
together, having their cranks at angles relatively one to the other.

page_text: The blower or blowers may be driven in either direction, so as to change the
outlet into the inlet, and vice versa as may be required.
In order to lubricate the parts whilst the blower is in motion, I make the
hinges Hand K of a hollow form, or provided with a tube as shewn, so that
the oil or other lubricant after being passed into the hinge H₁ may travel down a
small hole in the dividing plate J and into the tube or hinge K, aud from thence
down a tube or other channel in the frame D onto the crank C, whereby all the
parts are lubricated from one source.
By constructing rotary blowers, pumps, and the like according to my invention,
they can be made accurately and cheaply, as the working parts can all be
machined.
.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. In rotary blowers, pumps, and the like, the employment of a drum, mounted
on a crank or its equivalent within a cylinder or casing, and connected to a hinged
plate passing through an aperture in the cylinder or casing, substantially as and
for the purposes set forth.
2. In rotary blowers, pumps, and the like, the drum E with its dividing plate J
hinged at H and K, substantially as and for the purposes set forth.
3. In rotary blowers, pumps, and the like, the combination of the cylinders or
casings A A', covers B, cranks C1 C2, frames D D', drums E E', apertures F F¹,
faces L L', channel GH, dividing plates J J¹ hinged at H'H' and K K', all
acting substantially as and for the purposes set forth, together with any mere.
modification or modifications thereof.
4. In rotary blowers, pumps, and the like, as described, the means employed for
lubricating the working parts, substantially as and for the purposes set forth.
Dated this 10th dow of November 1900
J. F. A. PFLAUM.
Brewer & Son,
London and Leeds.
J. F. A. PFLAUM.
Brewer & Son,
London and Leeds.