AN IMPROVED ROTARY PRESSURE BLOWER AND EXHAUSTER
Year: 1885

page_text: I, HENRY WILKINSON, of High Coney Green, Clay Cross, in the County of
Derby, Engineer, do hereby declare the nature of my said Invention for "AN
IMPROVED ROTARY PRESSURE BLOWER AND EXHAUSTER" to be as follows:-
This Invention relates to improvements in Rotary Pressure Blowers and
Exhausters of simple construction to uniformly deliver as near as possible the
whole contents within an outer and inner cylinder.
This Invention consists of a single vane mounted on a shaft, attached to which
vane are curved valves fitting closely to the outer cylinder, the vane and valves
revolving concentrically to the outer cylinder in which are constructed the inlet
and outlet ports; the vane causes to revolve an inner cylinder eccentrically to the
outer cylinder, the inner circumference of the said inner cylinder being in close
contact with the shaft, and the outer circumference in close contact with the outer
cylinder.
The vane is constructed hollow to form the the outlet from the inner cylinder, it
being solid at each end to revolve the inner cylinder, and solid where it is mounted
on the shaft to prevent any loss while the slot in the inner cylinder passes the
shaft. The inner cylinder is supported in each end or cover of the outer cylinder
in recessed bearings, or in large size machines to reduce friction, it may be run on
friction rollers fixed in the said ends or covers, and has also a slot longitudinally
and sufficiently wide to admit the vane, and form the inlet to itself; and on either
side of this slot there are recesses to allow the valves attached to the vane
to pass between the inner cylinder and the outer cylinder, where they are in close
contact.
The inlet and outlet ports are in the outer cylinder, the inlet being on one side
of the point where the inner cylinder is in close contact to the outer cylinder, and
the outlet on the other side, both being equal distance from the said point, also
alternate and diagonal to each other, so that when the leading valves on the vane
are over the ports they open the outlet and close the inlet; also in the same
manner the trailing valves will close the outlet and open the inlet ports, thereby
insuring the uniform inlet and outlet during the complete revolution of the vane,
without allowing any loss or back pressure, and also in one revolution discharging
the whole of the contents within the two cylinders.

page_text: An Improved Rotary Pressure Blower and Exhauster.
I, HENRY WILKINSON, of High Coney Green, Clay Cross, in the County of
Derby, Engineer, do hereby declare the nature of my said invention for "AN
IMPROVED ROTARY PRESSURE BLOWER AND EXHAUSTER" 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 improvements in Rotary pressure blowers and
exhausters of simple construction to uniformly deliver, as near as possible in one
revolution, the whole contents within an outer and an inner cylinder.
This invention consists of a single vane mounted on a shaft, attached to the
vane being curved valves fitting closely to the outer cylinder, the whole revolving
concentrically to the outer cylinder, in which are constructed the inlet, outlet, and
passage ports; the vane causes an inner cylinder to revolve eccentrically to the
outer cylinder, by means of a slide fitted with a block and pin in each end of the
vane, and secured to the blocks at each end is a quadrant, the quadrant blocks and
pins revolving with the inner cylinder, the inner circumference of the inner
cylinder being in close contact with the shaft, and the outer circumference with the
outer cylinder.
The vane is secured to the shaft by means of studs and nuts in recesses, and
constructed hollow of a corrugated form, to overlap the inlet and outlet ports, the
said vane having a slide in each end provided with a block and pin to revolve
the inner cylinder, the pins fitting into the inner cylinder. The valves are bolted
with countersunk headed bolts to the corrugated part of the vane, and arranged
alternately, corresponding with the ports in the outer cylinder, the leading valves
only, acting on the inlet ports, and the trailing valves only on the outlet and
passage ports. The vane being of a corrugated form overlaps the inlet and outlet
ports without any connection between them, but at the same time allows a clear
communication from the inlet ports to the back of the vane, and the outlet ports to
the front of the vane.
The inner cylinder is supported in recessed bearings in each end or cover of the
outer cylinder, provided with adjustable rings in halves, secured with set screws
and adjusting screws, having a slot longitudinally and sufficiently wide to admit
the vane and quadrant, and forming the inlet to itself. On each side the slot are
recesses, exactly corresponding with the leading and trailing valves, allowing them
to pass between the inner and outer cylinders. The said quadrant secured by bolts
to the blocks and pins at each end of the vane is for the sole purpose of preventing
any loss of air while the slot is passing the shaft.
The shaft and balanced pulley are supported in adjustable bearings in the ends
or covers of the outer cylinder, in which the oil wells are constructed to lubricate
the working parts.
The inlet and outlet ports are arranged alternately, and the passage ports
opposite the outlet are acted upon by the valves as above described, the passage
ports forming a clear passage from the inner cylinder until the slot has left the
face of the outer cylinder, the whole insuring the uniform inlet and outlet during

page_text: the complete revolution of the vane, without any loss or back pressure, and also
in one revolution discharging the whole of the contents from within the two
cylinders.
The accompanying drawings illustrate my invention, the same letters of reference
applying to the different figures.
Fig. 1. is a section through Y. Z. shewing inlet ports A., outlet ports C, passage
ports B., adjustable rings D, leading valves E., trailing valves F., shaft G., vane H.,
inner cylinder I., outer cylinder J., quadrant K.
Fig. 2. is a longitudinal section through A. B., shewing the slide L., and
lubricating wells M., with drum N., for driving belt.
Fig. 3. is a plan of the corrugated vane with the leading and trailing. valves
attached, shewing the quadrant K. attached to the vane at cach end with a block
and pin S.
Fig. 4. is a plan shewing the inlet ports A, passage ports B, and outlet ports C.
Fig. 5. is an end view in elevation.
Fig. 6. is a side view in elevation shewing the inlet O. for the air, and the
recessed bearings P., supporting the ends of the inner cylinder.
Fig. 7. is an end view in elevation of the vane, shewing the leading and trailing
valves, also slide L, block and pin S, causing to revolve the inner cylinder.
Fig. 8. is a plan of bottom of the inner cylinder, shewing a slot Q., longitudinally
and sufficiently wide to admit the vane and quadrant, and form the inlet to itself,
and on each side the slot are recesses R., exactly, corresponding with the said
leading and trailing valves, to allow them to pass between the inner and outer
cylinder, where they are in close contact with each other.
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
Firstly, In the construction of a Rotary Blower and Exhauster, to the already
existing inner cylinder, working eccentrically to the outer cylinder; the application
of a single vane of the described construction.
Secondly, the construction of the valves and their arrangement, as described, and
as shewn in the accompanying drawings.
Thirdly, in the arrangement of the inlet, outlet, and passage ports.
Fourthly, the mode of passing the said valves between the two cylinders where
they are in close contact.
Fifthly, in the mode of driving and steadying the inner cylinder, by means of
blocks and pins.
Sixthly, the mode of preventing any loss while the slot in the inner cylinder
passes the shaft, by means of a quadrant secured to the said blocks and pins,
thereby preventing any loss of air while the slot is passing the shaft, and during
the complete revolution of the vané discharging the whole contents from within
the inner and outer cylinders, substantially as herein before specified, described, and
illustrated by the accompanying drawings.
L
1
1007