Improvements in Filtering Devices.
Year: 1897

page_text: Date of Application, 23rd Apr., 1897-Accepted, 21st Aug.,
1897
CUMPLEIE DI TULE
Improvements in Filtering Devices.
We, HENRY JAMES MURNEY, Millwright, and WILLIAM THOMAS MURNEY,
Merchant, both of the Town of Goderich, in the County of Huron, and Province of
Ontario, Canada, do hereby declare the nature of this invention and in what manner
he same is to be performed, to be particularly described and ascertained in and by
the following statement:-
The object of this invention is to provide a filtering device for separating solids
and liquids, or removing impurities therefrom, in which a fresh supply of filtering
material may continually be fed to the material being filtered, which, after passing
through the filtering material, passes by gravity through perforations or a screen
n the bottom of the device, while the filtering material is forced out of the device
in the manner and by the means hereinafter substantially described.
Figure 1, is a sectional front elevation of the filtering device.
Figure 2, is a side elevation of the same, with the lower portion in section.
Figure 3, is a plan view of the device.
Figure 4, is a disc composed of perforated radial plates, as an alternative for the
wedge-shaped arms which operate in the upper chamber.
Figure 5, is a plan view of the disc referred to in Fig. 4.
Figure 6, is an alternative form of the device.
In the drawings, like letters of reference indicate corresponding parts in the
different figures.
A, is a feed cylinder which is preferably made of sheet metal and is located in a
vertical position as shown.
A¹, are braces supporting the feed cylinder in operative position. The filtering
material is to pass preferably from a hopper into this vertical feed cylinder, and
pass therefrom, as hereinafter indicated.
B, is a spider which serves the purpose of strengthening braces for the feed
cylinder and also to keep the feed cylinder A, concentric with the rotatable main
shaft C.
C, is the main shaft, suitably journalled. The upper bearing is not shown in
the drawings. This shaft may be and is supposed to be driven by power, either
from above or below the machine.
D1, is a spider within the feed cylinder at or near the lower end thereof. The
main shaft C, also passes through this spider, which serves the same purpose as the
spider B, for strengthening braces for the feed cylinder and also to keep the feed
cylinder concentric with the main shaft C.
C', is a cylindrical pivot at the lower end of the main shaft C. It is fitted into a
socket in the socket block D, as indicated in the drawings.
E, are legs, or may be a grooved plate, with holes through it, through which the
liquid may freely pass. These legs, or plate, hold the socket block in position, and
are attached to the base ring F, and the base ring is held in position by the
braces H, connecting it with the main frame G.
K, is the perforated or strainer base plate which rests on the legs E. It is ex-
tended upwards so as to form perforated or strainer sides K¹. These perforated

page_text: are designed to remove the filtering material from the ledge formed by the
flange Y, after it has been deposited there by scrapers U, U, and discharge it
through a hole Y' in the flange Y, and the side (see Figs. 2 and 3).
As the shaft R, is given a rotary motion in the direction shown by the arrow,
the spur pinion Q, by means of the toothed wheel P, causes the sleeve O, to rotate,
carrying with it the annular trough T and the scrapers U and Z, which are thus
enabled to perform their office of removing the surplus filtering material from
the filtering device. It will be seen that by continually feeding the filtering
material into the upper part of the feed cylinder A, that it goes downward by force
of gravity and by the action of the screw or worm L, until it reaches the chamber I',
where it is held by the perforated base plate K, and perforated sides K'.
The liquid to be filtered, is poured into the trough T, which has a rotary motion
as already indicated. This liquid passes into the basins X, X, through the per-
forated conduit t, onto the filtering material in the chamber I', and passes through
the same and through the perforations or meshes in the base plate and sides, as
indicated by arrows, into the bottom chamber I, from which it passes by the
orifice J, as already mentioned.
As the filtering material is continually supplied to the chamber I', and is there-
fore continually renewed, it is removed by the action of the arms W, and the rotating
scrapers U, and Z, already referred to. This filtering material, if it be for instance
of saw-dust, may be cleaned, dried and used over again.
If desired, a vacuum may be created in the lower chamber I, to facilitate the
passage of the liquid through the filtering material.
Instead of the filtering device being put to the use already described, it might
for instance be used for the purpose of cleaning granular materials, which may
have become covered or caked with soluble impurities. By feeding the material
into the feed cylinder and allowing water from the circular trough and basins X,
to percolate through it, the impurities may be removed from the grains, which
would be scooped out, and discharged from the machine in a cleansed state by means
of the scrapers U and Z.
Fig. 6, illustrates an alternative though inferior form of device for attaining
some of the objects hereinbefore described, in which the feed cylinder A, instead
of being vertical, is inclined as indicated, while the shaft C, instead of passing up
through the feed cylinder, passes transversely through it and the chamber I', at
an opposite incline, while the perforated plate K', is shown on the under side of
the feed cylinder A, and the arm or arms W, are in a substantially vertical position
instead of horizontal, as hereinbefore described, and in such position with respect
to the lower opening of the chamber I', as to force the filtering material up through
the chamber I', after the material to be filtered has passed through the same, from
whence it passes out through the perforations in the plate K.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, we declare that what
we claim is: -
1. In a filtering device, means for continually feeding fresh supplies of filtering
material to the material being filtered; in combination with a suitable outlet for
the filtered material, and means for discharging the filtering material from the
device, substantially as and for the purpose specified.
2. In a filtering device, the combination with the feed cylinder A; of the
suitably-perforated chamber I'; the rotatable and suitably-perforated trough T,
and scraper U, operating in the chamber I', substantially as specified.
3. In a filtering device, the combination with the feed cylinder A; of the suit-
ably-perforated chamber I'; the rotatable trough T, provided with outlet t¹; the
perforated basin X, attached to the trough T; and the rotatable scraper U, for
removing the filtering material, substantially as specified.
4. In a filtering device, the combination with the feed cylinder A; of the per-

page_text: 14. In a filtering device, the combination with the feed cylinder A; of the
rotatable main shaft C, suitably journalled; one or more arms W; the open upper
chamber I', suitably perforated; and the chamber I, with suitable out-let for the
liquid, substantially as specified.
15. In a filtering device, the combination with the feed cylinder A; of the
rotatable main shaft C, suitably journalled; the worm L, rotatable by means of the
shaft C; the suitably perforated open upper chamber I'; one or more arms W,
operating in said chamber I', substantially as specified.
16. In a filtering device, the combination with the feed cylinder A; of the
rotatable main shaft C, suitably journalled; the worm L, rotatable by means of the
shaft C; the suitably perforated open upper chamber I'; and one or more arms W,
operating in said chamber I', substantially as specified.
17. In a filtering device, the combination with the feed cylinder A, of one or more
rotatable arms W, and the chamber I', suitably perforated and supported, sub-
stantially as specified.
18. In a filtering device, the combination with the feed cylinder A; of the suit-
ably perforated chamber I'; one or more rotatable scrapers U, operating in the
chamber I¹; and one or more rotatable arms W, substantially as specified.
19. In a filtering device, the combination with the feed cylinder A; of the
perforated chamber I', suitably supported; one or more rotatable scrapers U; and
one or more auxiliary scrapers Z, for removing the filtering material from the
ledge Y, substantially as specified.
20. In a filtering device, the combination with the feed cylinder A.; of the
rotatable main shaft C, suitably journalled; one or more rotatable arms W; the
chamber I; the guide-way N, and sleeve ring 0; the annular trough T, and
basins X, substantially as specified.
21. In a filtering device, the combination with the feed cylinder A; of the
rotatable main shaft C, suitably journalled; one or more rotatable arms W; the
chamber I; guide-way N, and sleeve ring 0; the toothed wheel P, meshing with
the toothed pinion Q; the bracket S, and the shaft R, journalled therein; and one
or more rotatable scrapers U, substantially as specified.
0
1 1007