AN IMPROVED ROTARY PUMP AND BLOWER
Year: 1885

page_text: I HUGO SALOMO of N° 148 Bourke Street West, in the City of Melbourne, and
Colony of Victoria, Engineer do hereby declare the nature of my invention for
"AN IMPROVED ROTARY PUMP AND BLOWER" and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement:-
This invention has been designed principally for use as a rotary pump, although
it may also be used as a rotary blower. I intend to call it the " Hydraulant."
It consists of a novel combination of novel contrivances. These novel contrivances
consist-first-of two pumping discs-second-of two cheeks or casings to receive
the pumping discs, and third, of a wedge-piece through which the supply enters.
The pumping discs are each made with a conical face and a recessed back. On
the face of each are radial ribs or teeth extending from the centre to the periphery,
the faces of which ribs are wholly on the one plane. They each have a stop behind
each rib, and they are each carried by their own spindle.
The two cheeks or casings are dished to receive the pumping discs, and are so
made as that their lips or flanges meet for about one half of their circumference
and then diverge from one another, so as to leave a wedge-shaped space between
them. On the outer side of each cheek is a projecting hollow boss which forms
a bearing for the spindle of the respective discs and on the inner side just beyond
the periphery of the discs are two suction chambers. These cheeks are also so
constructed as to provide a suitable discharge opening.
The wedge-shaped piece is made to accurately fit the wedge-shaped space left
between the two halves of the two cheeks. The supply pipe is made in it and
leads to a quadrant-shaped opening cut quite through it between the two discs, so
as to allow the supply to pass from such opening to the spaces between the ribs or
teeth of the discs on both sides of it.
In order however that this invention may be more clearly understood reference
will now be made to the drawings hereto attached, in which
Figure 1 is a plan looking down from the top, and
Figure 2 an end elevation of this rotary pump and blower.

page_text: Figure 3 is a horizontal section on the centre liue a a Figure 2, but shewing the
discs by a top view in the act of working together.
Figure 4 is a side elevation of the machine with one of the discs and its casing
taken off, and with part of the wedge-shaped piece between the discs broken away
in order to shew the central section of the inlet bend.
Figure 5 shews a face view of one disc within its casing.
Figure 6 is a horizontal section through the centre of one of the discs affixed on
its spindle.
In these Figures A A are the conical discs made preferably of brass, and A' A¹
are the radial ribs or teeth projecting from their faces, one side of such ribs or
teeth c being shaped similar to the teeth of a bevel wheel, so as to allow them to
gear with and work quite close to each other as shewn in Figure 3. These discs
are keyed upon their respective spindles A³, one of which is long enough to allow
of the fly wheel A* and pulley A* being secured thereon, so as to enable it to be
driven either by manual power, or by belt from any other moving machinery.
The face and the ends or periphery of these ribs or teeth A¹ and the back wearing
edge of the conical discs are truly turned and work within their side cheeks B,
which have outwardly projecting sleeves or bearings B' to support the spindles A².
These cheeks are secured to the wedge-shaped piece C by the bolts B2, and to each
other by the bolts B³, suitable flanges B being provided upon them for that
purpose. By reference to Figure 5 it will be noticed that each of the cheeks B
has one-half of the outlet branch B and a vacuum recess B7 formed in them as
shewn. The wedge-shaped piece C is faced true upon its surfaces to allow of the
discs on either side working against it, and in the upper portion of it is a quadrant-
shaped opening C¹ quite through it into which the inlet or suction branch C leads.
The lower portion of said wedge-shaped piece beneath the chamber C¹ is hollow,
and forms flanges to receive the bolts B, which flanges are cast or formed upon the
lower or standard part C of the wedge-shaped piece. C is a foot plate, in which
are the holes C to receive the holding down bolts for affixing the machine to its
frame or foundation. As are small projecting snugs upon the face of each conical
disc near its outer edge, between which snugs and the ribs or teeth of the one disc,
the ribs or teeth on the opposite disc gear, and so prevent their striking against
one another when the machine is roversed. The arrows D shew the course of the
air or liquid passing through the machine.
The mode of operation is as follows:-The inlet branch C is connected to the
suction pipe. One of the discs is driven by machinery or otherwise, and those ribs
or teeth which are beyond the point of the wedge-shaped piece O gear with those
on the opposite disc and so a rotary motion is imparted to it also. This rotary
motion produces a vacuum in the chamber C¹ into which the air or liquid finds
ingress, and from whence it passes through the quadrant-shaped opening C³ into the
spaces between the radial ribs or teeth A¹ which confine and carry it down between
them and the lower faces of the wedge-shaped piece C. Immediately it passes the
point of this wedge-shaped piece the ribs or teeth A³ begin and gradually increase the
depth of their gear with each other, thereby ejecting the whole of the air or liquid
into the outlet or delivery branch B. It will be observed that as the conical
discs A are recessed at their backs, the air or liquid finds entrance thereto, and so
forms a cushion, which materially assists in causing the said discs to rotate freely
on their working faces by preventing any undue friction.
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
First. The conical discs A having the radial ribs or teeth A¹ and (either with or
without the gear snugs A') said discs A being affixed on spindles A and arranged
to gear and work with each other, substantially as herein described and explained
and illustrated in the drawings.

page_text: Second. The checks or casings B, having the parts marked B1, B³, B6, and B7
formed on them in combination with said conical discs A substantially as herein
described and explained and as illustrated in the drawings.
Third. The wedge-shaped piece marked by the letters C to C in combination
with the conical discs A and the cheeks or casings B, substantially as herein
described and explained and as illustrated in the drawings.
Dated this twenty-sixth day of June One thousand eight hundred and