Year: 1887

page_text: described and ascertained in and by the following statement :-
Figure 1 is an end elevation of a revolving filtering machine constructed in accordance
with this invention.
Figure 2 is a longitudinal vertical section through the center of the same.
Figure 3 is a transverse section on the line cv of figure 2.
Figure 4 is a transverse section on the line wwo of figure 2.
Figure 5 is a plan of a filtering machine with its upper cover and a portion of its
upper strainer removed.
Figure 6, is an enlarged perspective view representing the automatically sliding
valve for controlling the water passage in one end of the filter casing.
Figure 7 is an enlarged view of the automatically sliding valve for controlling the
water passage in the opposite end of the casing.
Figure 8, a vertical section on the line uu of Fig. 7.
Figure 9, a transverse section on the line
with the water passage in which said valve is located.
through the valve shown in fig. 6
Figure 10, a transverse section on the line yy-through the valve shown in fig. 7,—
with the water passage in which it is located.
Figure 11 a transverse section on the line of fig. 7 enlarged.
My present invention has special reference that class of rotating filters for
manufacturing and other purposes described in United States Patents Nos. 279,226
and 305,574 granted to me and also described in two allowed applications for United
States Patents filed by ne April 16th-1886 in which a horizontally rotating filtering
machine having a single independent shell or casing is employed having at each end
a water passage and a hollow stationary journal communicating therewith,-the
distinguishing and perhaps most prominent feature of this invention, being a pair of
automatically sliding valves moving by gravity within and for closing said passages.
the inlet and outlet ports of which are made to alternately register with the fixed
supply and discharge journals, as the position of the casing and valves are changed, by
revolving the casing according as the water is to be filtered or the bed of filtering
material is to be cleansed from the sediment deposited thereon and therein.

page_text: In the said drawings A represents a single shell or casing adapted to rotate on
fixed hollow journals BC within suitable bearings DD and having its upper and
lower sides provided with covers a, secured thereto by bolts b, a corrugated strainer e
of wire gauze or perforated metal being interposed between cach cover and the
contiguous portion of the casing, the form of the filtering machine when the covers
are in place being cylindrical or nearly so, see figs. 1, 3 and 4. de are vertical
water passages formed in the opposite ends of the casing, that d, in the left or inlet
end of the casing being of uniform cylindrical form except at its top and bottom,
see fig. 2, where its diameter is contracted, forming a port or opening at its bottom
communicating with the space h¹ between the under cover a and the contiguous
strainer C, and forming a port i at its top communicating with the space between the
upper strainer c and its contiguous cover a thereover; while the water passage e in
the right or outlet end of the casing is of cylindrical form of the same diameter from
top to bottom.
Within the water passage d is located a cylindrical plug or valve F, preferably
solid, which fits snugly therein and rests on the seat of the port h when the filter
casing is in the position seen in fig. 2 and upon the seat of the port i when the casing
is rotated 180° from said position, the said cylindrical valve F automatically
falling by gravity through the water passage d from the seat of one port to that of
the other, and forming a water-tight joint with both seats so as to alternately open
one port and close the other in said water passage according to the positions of the
casing, from that shown in fig. 2 to that (not shown) after being given a half
revolution. This cylindrical valve F is introduced within said water passage d from
its top and a screw thimble (with the port i at its centre) is turned into the sides
of the passage d at its end. Within the water passage e is located a long valve G,
its length exceeding that of the passage, each end of the valve G terminating in an
annular projection of a diameter greater than that of the passage e, in which it is
also free to move by gravity, when the casing is given a senti-revolution, the inner
surfaces of the two projections 11 being carefully turned down so as to alternately
close the ports or ends m n of the passage e. The stem or portion of the valve Ğ
intermediate of the projections 17 will now be described by reference to figs. 7, 8, 10,
and 11. The form of the stem in transverse section is that of four ribs p, one being
arranged diametrically opposite another fig. 10,-the distance between the extremities
of each pair being equal to the diameter of the water passage e, a space between
any two contiguous ribs and the interior of the water passage being thereby afforded
for the water to flow freely up therein, each rib p, being cut away for a short
distance above and below a horizontal line passing through the axis of the hollow
journal C contiguous thereto, by which construction the water way of the passage e
is enlarged to permit of the unobstructed escape of the water to said outlet journal,-
the water entering the casing by the hollow journal B at the left and passing throngh
the filtering material out by the hollow journal C at the right,-fig. 2. As previously
stated the length of the valve G exceeds that of its water passage e fig. 2,—the upper
end or projection ! resting on and making a tight joint with the upper seat, and the
lower projection extending below the bottom of the water passage e, by which
arrangement the water is permitted to pass up the space between the ribs 1', and the
inner wall of said passage to the enlarged space opposite the hollow journal C and
escaping through the same, the hollow journal B constituting a fixed supply pipe
and the hollow journal C a fixed discharge pipe, and the inlet and outlet ports im hu
of the water passages de of the casing alternately registering with said fixed supply
and discharge journals as the position of the casing is changed by revolving it
180 degrees. In order to admit of the introduction of the valve G within its water
passage e, the inner end of one of the projections terminates in a screw plug 15
which turns into the contiguous ribbed portion of the stem,-the parts being separated
when the valve is to be located in position and afterward screwed together.
The filtering material may consist of animal or vegetable carbon, granulated silica,
pumice stone, gravel etc., and may occupy the whole area or a portion of the area
within the casing between the strainers cc, and is introduced by removing one of the

page_text: covers and the strainer in proximity to it. It will be observed that the journals BC
are open from end to end and have no other ports or openings, the inner end of each
journal communicating directly and being at right angles with the contiguous water
passage of the casing, the top of the valve F being always flush or on a line with or
slightly below the bottom of the interior of the journal B and the entire area in
transverse section of the inner end of the journal C being always open and leading
directly from the enlarged water space around the ribs to insure the unobstructed
passage of water at all times as previously described.
When the filtering material requires cleansing, it is effectually performed by
turning the casing 180°, in which position the sediment which had before collected
chiefly at the bottom of the filtering bed is located at or near the top of the bed
The centers of the casing terminate in hollow hubs HI and the hollow journals BC
pass into them, each journal having its inner end provided with an annular flange
which abuts against the outside of the casing (that portion of it forming the hub).
To pack the joint between each hub and its contiguous journal, I interpose a
sleeve Land a packing s between them see fig. 2, the inner end of the sleeve having
an annular flanger and the outer end of the sleeve being provided with an exterior
screw thread for the reception of a nut which when turned inward thereover forces a
metallic ring or collar u tightly against the annular packing s, (the position of the
inner end of the sleeve L being against the hub or casing) and thus precludes any
possibility of leakage at this point. To keep each journal on its seat against the
outside of the casing, and the flange of the sleeve L and packing s up to the journal
flange g, I employ screws or screw bolts 16 which pass through an outer flange q¹ of
the sleeve L into the hub.
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,
1. As an Improvement in Rotating Filtering Machines having a single shell or
casing an automatic valve F actuated by gravity, in combination with and for
alternately opening and closing the ports hi of the inlet water passage d, substantially
as described.
2. An automatic valve G actuated by gravity in combination with and for alternately
opening and closing the ports m n of the outlet water passage e substantially as set
forth.
3. In combination with an outlet water passage e of a rotating single casing,
gravitating valve G of a length exceeding that of the said water passage, as and for
the purpose specified.
4. A rotating filtering machine, consisting essentially of the following named
elements, viz. A single independent shell or casing A containing filtering material-
water passages de at opposite ends of the casing, a pair of ports for each water
passage, gravitating valves F and G for alternately opening and closing said
ports, stationary hollow journals BC which constitute fixed supply and discharge
pipes, and bearings D D for said journals, the several parts being constructed to
operate substantially as described.
5. In combination, a hollow journal with a flange 1 at its inner end, a hollow
hub formed integral with the casing A,-an interposed packing &, an annular
ring u, a screw threaded sleeve L with its flanges, a nut turning over said
sleeve and screws or bolts 16 passing through the sleeve into the hub, as and for the
purpose set forth.