Improvements in and connected with Filters.
Year: 1899

page_text: Communicated from abroad by HUGO AND WILLIAM PATAKY, of 320, Broadway,
New York, United States of America.
Improvements in and connected with Filters.
I, WILLIAM HENRY BECK, of 115, Cannon Street, in the City of London, Con-
sulting Engineer and Chartered Patent Agent, do hereby declare the nature of
the said invention and in what manner the same is to be performed to be parti-
cularly described and ascertained in and by the following statement:-
The invention relates, primarily, to filters mainly intended for use in manu-
factories where a constant supply of water is at hand, although the same can be
used in isolated plants, such as in private houses and the like.
The invention also relates to a filtering device especially adapted for use in
connection with an apparatus for carbonating liquids.
A filter made in accordance with the invention comprises a filter case, a
filtering body or filtrant, and a combined supporting stem for the filtrant and
exit tube to which the filtrant is detachably secured.
The main object of the improvements in this regard is to provide means for
detachably securing the filtrant within the filter-case, so as to allow of its ready
removal for the purpose of cleaning or supplying a new filtrant, and also means
for packing the joint between the filtrant and the supporting and exit stem.
In the employment of filters in connection with carbonating apparatus con-
siderable difficulty has been encountered owing to the gas in the carbonated
liquid during the passage of the liquid through the filter rising up and passing
through the filter without passing through the filtrant, the gas then preceding
the liquid, which is to a certain extent relieved of the pressure of the gas,
which should be employed to aid the pressure derived from other sources in
forcing carbonated liquid through the filtering media.
The filter is so constructed that when it is employed in connection with the
carbonating apparatus the gas must pass through the filtering media before it
can take its exit from the filter, the liquid and gas passing through the filtering
media substantially contemporaneously, thereby not only properly filtering the
liquid, but purifying the gas as well.
The invention therefore resides in the construction and combination of devices
hereinafter described and further pointed out in the claims.
In the drawings forming part of this application, Figure 1 is a diagrammatic
illustration of a carbonating apparatus, showing the means of employing the
improved filter in connection therewith. Fig. 2 is a plan view of the filter-
casing enlarged and detached. Fig. 3 is a sectional elevation of the filter-
casing and the contained filtering construction, the section being taken approxi-
mately on the line 3 3, Fig. 2. Fig. 4 is a side elevation of Fig. 2. Fig. 5

page_text: is a side elevation of the cap of the casing and the exit and supporting tube
and Fig. 6 is a central sectional elevation of the lower section of the casing.
Similar numerals of reference indicate corresponding parts throughout the
several views.
At first shall be described the construction of the filter and then its applica-
tion to general use and also its application to a carbonating apparatus..
At I (Figure 1) is the filter, which comprises two separable parts, the lower
part comprising the cylindrical casing 4, having a bottom 5, from which pro-
jects an apertured lug 6, the lower aperture being interiorly screw threaded,
the other and upper aperture 8 passing through the bottom of the casing.
A washer 9 is located against the shoulder 10, formed by the respective aper-
tures, the exterior of the lug 6 being squared to form a nut 11, the upper sec-
tion of the casing comprising a top disk 12 and a downwardly-extending annular
projection 13, provided with an interior screw-thread adapted to engage a screw-
thread on the upper section of the casing 4, thereby detachably securing the two
casing-sections together. Depending from the top 12 of the upper section is
a tube 14, reduced in diameter intermediate of its ends to form an interior
annular shoulder 15 at the point of juncture of the tube and the top 12 of the
upper casing-section and at the bottom an annular flange 16, the lower end 17
of the tube being slightly enlarged over the main body of the tube, but of
smaller diameter than the annular flange 16, the bottom of the tube end or pro-
jection 17 being imperforate, and on its exterior a screw thread 18 is formed.
The bore within the tube is continued upwardly through the top 12 of the
casing-section, a squared projection or nut 19 being formed on the exterior of
the casing-section, and projecting upwardly from the nut is a screw-threaded
projection 20, in which the bore of the tube 14 is continued.
The intermediate section-riz., between parts 15 16 of the tube 14 is pro-
vided with holes 21, which, for a purpose hereinafter described are located at
the sealed extremity of the tube, which in the present case is just above the
annular flange 16.
At 22 is the filtrant or filtering medium, which is barrel-shaped, with an
internal bore 23 of a size adapting it to fit over the annular shoulder and
flange 15 16, leaving a space between them and the tube 14. To secure the
filtrant 22 in position, it is passed over the tube 14, its inner bore bearing
against the annular shoulder 15 and flange 16.
Before placing the filtrant 22 on the tube an elastic washer 24 is placed about
the annular shoulder 15 and against the top 12 of the upper casing-section.
When in this position, a screw-cap 25, having a superposed washer 26 and an
internal thread 27, is screwed onto the threaded projection 17. forcing the
washer 26 against the bottom of the filtrant, as shown in Fig. 3, and firmly securing
the filtrant 22 in position and allowing it to be readily removed for cleaning
purposes or renewal, the washer 24 being likewise forced against the top 12 of
the upper section and about the shoulder 15, packing the joints between the
filter-bore 23 and the interior or receiving space 28 of the filter.
As will be observed by reference to Fig. 3, in order to remove the filtrant it
is only necessary to unscrew the cap 12 from the cylinder 4 which will carry
with it the suspended filtrant, allowing access thereto, and the filtrant can be
readily detached from its support by unscrewing the cap 25.
For many purposes the tube 14 may be provided with a number of aper-
tures, as 21, located anywhere along its length, or said apertures may take the
form of a slot, either of which forms of opening being so proportioned as to
allow of a ready exit of the filtered liquid from the filter, and when so employed
that is, in general use-it is not material to the invention whether the ingress
to the filter is made through one end or the other. However, when employed
in connection with a carbonating apparatus the following arrangement is
preferred;
In Fig. 1 is diagrammatically illustrated a suitable carbonating apparatus in

page_text: connection with which the present improvements may be advantageously
employed, the apparatus being that described and illustrated in a Patent granted
to Peter E. Malmstrom on the 3rd day of May, 1898, No. 603,404, in which 29
is the carbonating-cylinder and 30 a force-pump, the force-pump having a com-
pression and commingling chamber 31 at one end and a barrel 32 and plun-
ger 33, operated by a hand-lever 34, the compression-chamber 31 being placed
in connection with a suitable supply of water, as by the pipe 35. At 36 is a
controlling-valve leading from the carbonating-cylinder, which connects with
the ingress-port 37 of the compression-chamber 31 of the pump by the pipe 38,
to which the pipe 35, leading from the water-supply, also leads. At 39 is a
pipe and associated devices leading back to the gas-space of the carbonating-
cylinder, as illustrated in the patent before mentioned. This pipe leads from
the exit and commingling chamber of the force-pump, and in this pipe is located
the filter in order to illustrate its operation in this connection. In the opera-
tion of this apparatus the commingled gas and water, then carbonated, passes
out of the compression-chamber of the pump through the pipe 39 to the car-
bonating-cylinder. When used in this connection the filter case is so connected
that the inlet 7 8 to the casing will be at the same end as the lioles 21-that
is to say, the inlet to the tube 14, leading to the outlet 20 from the filter, will
be at the lowest point at which it would be practical to locate said holes and
closely adjacent to the inlet which in this case would be through the apertured
lug 6. The carbonated liquid would then pass into the casing under the pres-
sure from the pump, the liquid being then forced to pass through the filtrant
by the pressure from the pump, carrying with it its contained gas, which
passes into the bore of the filtrant and then through the hole 21 in the exit-
tube out of the filter and into the carbonating-cylinder 29 or elsewhere, as
desired, the gas in the carbonated liquid being compelled to pass through the
filtrant into the tube with the liquid instead of allowing it to become separated
from the liquid and pass through the filter independently thereof. The location
of the entrance into the exit-tube being below the level of the liquid in the
casing, the gas rising up from the liquid above the level thereof, if the liquid
should not completely fill the casing, is compelled to travel through the filtrant
before it can find an exit therefrom through the exit tube.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is
1. In a filter, the combination with a casing having an inlet through the
center of its bottom, a cover detachably connected thereto, an outlet-tube made
integral with said cover and projecting into said casing from the center of said
cover, a shoulder formed on said tube just inside of said cover and a shoulder
formed thereon near the lower end of said tube, the said tube closed at its
lower end and screw-threaded below said lower lug, inlets into the bore of said
tube between said lugs, a washer fitted on said upper lug just inside of said
cover a cap screwed on the lower end of said outlet-tube, a washer on the upper
face of said cap, a filtrant having a bore substantially equal in diameter to that
of said lugs, inclosing said exit-tube and supported between the said washer on
the said upper lug and the washer on said cap, substantially as described.
2. In a filter, the combination with a casing having an apertured lug formed
on its bottom at the center thereof, said lug being interiorly screw-threaded and
squared outside to form a nut, the aperture therethrough forming the inlet into
said filter, a cover detachably connected to said casing, an apertured lug formed
upon the outside of said cover at the centre thereof and integral therewith, and
squared outside to form a nut, a tube formed integral with said cover extending
into said filter and forming a continuation of the opening through the lug on
the outside of said cover, said tube being closed at its lower end and provided
with a lug at its upper end and one near its lower end, and having openings
.

page_text: into the bore between said lugs, a cap screw-threaded on the lower end of said
tube, and a filtrant held between said cap and the cover, washers being inserted
between the cap and cover and the filtrant, said filtrant inclosing said outlet-
tube, substantially as described..
Dated this 19th dow of Donambar 1800
W. H. BECK,
115, Cannon Street, London, Applicant.