Improvements in Filters.
Year: 1892

page_text: Date of Application, 12th May, 1892
Complete Specification Left, 29th Oct., 1892-Accepted, 31st Dec., 1892
PROVISIONAL SPECIFICATION.
Improvements in Filters.
I, JOHN FREDERICK CREASE of Comberton Hall, Kidderminster, in the-
County of Worcester, Major General in Her Majesty's Army (retired) do hereby
declare the nature of this invention to be as follows:-
The object of my invention is to produce a simple and efficient filter.
Such a filter I construct with an inner vessel and an outer vessel, arranged glue
pot fashion. The inner vessel has a perforated bottom and contains the filtering
medium above which is a cover held down by a screwed rod or spindle that passes.
through a transverse bar the hole in which is made with a screw thread corre-
sponding to the male thread of the rod or spindle. The whole is or may be pro-
vided with a cover. The vessels may be made of any suitable material and any
efficient filtering medium may be employed.
According to one construction the vessels are seamless vessels made of metal
such as iron or steel plate pressed to form in suitable dies and enamelled and the-
filtering medium is that known as carbalite.
When the vessels are of earthenware the bar through which the screwed rod or
spindle passes is in one arrangement secured to a metal ring located under the flange
of the inner vessel.
This can be effected in various ways.
Dated this 12th day of May 1892.
W. LLOYD WISE,.
Per F. J. Brougham,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Filters.
I, JOHN FREDERICK CREASE of Comberton Hall, Kidderminster, in the
County of Worcester, Major-General in Her Majesty's Army (retired) do
hereby declare the nature of this invention and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement:-
The object of my invention is to produce a simple and efficient filter.
Such a filter I construct with an inner vessel and an outer vessel, arranged glue.
pot fashion. The inner vessel has a perforated bottom and contains the filtering
medium above which is a perforated cover held down by a screwed rod or spindle
that passes through a transverse bar the hole in which is made with a screw thread
corresponding to the male thread of the rod or spindle. The whole is or may be
provided with a cover. The vessels may be made of any suitable material and any
efficient filtering medium may be employed.
According to one construction the vessels are seamless vessels made of metal'
such as sheet iron or steel pressed to form in suitable dies and enamelled, and the:
filtering medium is that known as carbalite.
When the vessels are of earthenware, the bar through which the screwed rod or
spindle passes is, in one arrangement, secured to a metal ring located under the
flange of the inner vessel.
This bar can be secured in various ways.
In the accompanying drawings:-
Fig. 1 is a central vertical section: and

page_text: Fig. 2 a plan with the cover removed, illustrating one construction of filter
according to this invention.
Fig. 3 is a sectional detail view of part of such filter.
1 is a seamless enamelled sheet metal vessel formed with a perforated bottom 2,
and with an upper flange 3. 4, is another seamless enamelled sheet metal vessel,
within which the vessel 1 is suspended so as to form with that vessel a chamber 5,
that serves as a receptacle for filtered water, that can be drawn off when required
by a cock 6 secured to the outer vessel near the bottom thereof. 7 is the filtering
medium, for example carbalite, which is prevented from passing through the
perforated bottom of the inner vessel 1 by a sheet 8 of suitable porous material
such as asbestos cloth.
9 is a perforated and enamelled metal plate or cover that is pressed upon the
filtering medium to keep the same in place by a screw 10, that works through a
correspondingly screw-threaded hole in a transverse bar 11 and at its lower end
rests in the cup 9" of the plate or cover 9. The bar 11 which may advantageously
be of T shape in cross section, can be fixed in various ways. In the example now
being described its ends are each arranged to enter a slot 12, in a plate 13 secured
to the inner side of the inner vessel 1, so that when the plate 9 is forced down
by the screw rod or spindle 10 the ends of the bar 11 will be forced upward
against the upper closed end of the slots so that the cross-bar and plate will be
thereby both rigidly held in place. 14 is a removable sheet metal cover which
may also with advantage be enamelled.
Figs. 4, 5 and 6 are corresponding views to Figs. 1, 2 and 3 respectively, illus-
trating a filter similar to that illustrated in the latter figs., but in which the inner
and outer vessels are made of earthenware, and the ends of the transverse bar 11
are held in oppositely arranged sheet metal ears or lugs 15, which extend through
holes 16 in the flange 3 of the inner vessel and are formed in one with a sheet metal
band or strip 17 located under such flange.
As will be seen the construction in each case is such that the inner vessel 1
simply rests upon the flange 4* of the outer vessel so that it can be easily removed
to permit of inspection or cleaning of the various parts of the filter and is loose
enough to permit passage of air from the chamber 5 when displaced by filtered
water.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. A filter comprising inner and outer vessels as set forth, namely, an inner
removable vessel formed with a perforated bottom and containing filtering material
and an outer vessel provided with a draw-off cock the said inner vessel being
suspended within the outer one so as to form therewith a chamber or receptacle
for filtered liquid and the filtering medium being confined in place by a per-
forated plate held down by a screw or equivalent device substantially as herein
described.
2. A filter of the kind referred to in the preceding claim in which the vessels
are seamless vessels made of metal such as iron or steel plate pressed to form in
.suitable dies and enamelled as set forth.
3. My improved filters constructed substantially as hereinbefore described with
reference respectively to and shown in Figs. 1, 2 and 3 and in Figs. 4, 5 and 6 of
the drawings annexed.
ليمى
בד
W. LLOYD WISE,
Per F. J. Brougham, .
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.