Year: 1888

page_text: I, MANFRED NEGRO, of No. 10 Alfred Place, Bedford Square, W.C., Gentleman
do hereby declare the nature of this invention to be as follows:-
The object of my invention is to provide a filter which, whilst being simple in
construction shall be applicable for the various purposes for which a filter is required.
The improved filter in accordance with my invention comprises a conical or other
suitably shaped vessel, having preferably an accurately fitting cover or lid hinged
thereto. At the lower end or apex of said conical shaped vessel is provided a sleeve
or collar having a female screw thread cut therein into which takes a tapered or
conical nozzle or nose piece. Within the vessel are arranged; one within the other,
two tubes, which may be of wire gauze, or formed, of any suitable material or substance
perforated to allow of the passage therethrough of, the fluids or liquids to be filtered.
Between the two tubes aforesaid is placed or packed a layer of filter paper, asbestos,
glass wool, or other suitable material, according to the nature of the fluid or liquid to
be filtered, through which.filtering medium percolate the liquids or fluids aforesaid.
A series of the tubes above described, furnished with screw ends and formed of
différent materials or substances, may be kept in reserve for employment in filtering
simple as well as corrosive or volatile fluids or liquids.
JAMES
STEVENSON,
Gray's Inn Chambers,
20, High Holborn, London, W.C.,
Agent for Applicant.

page_text: Improvements in Filters.
1 MANFRED NEGRO of No. 10 Alfred Place, Bedford Square, W.C., Gentleman, 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 filter which whilst being simple in
construction and rapid in action shall be applicable for the various purposes for
which a filter required.
I now proceed to describe my Invention having reference to the accompanying
sheet of drawings in which Figure 1 shows an elevational sectional view of my device
and Figure 2 shows a modified form of the same which I may also make use of.
The improved filter in accordance with my Invention comprises a conical or other
suitably shaped vessel shown at A Figure 1 and at B Figure 2 having preferably an
accurately fitting cover or lid a Figures 1 and 2 to prevent evaporation of the liquid
placed therein. At the lower end or apex of said conical shaped vessel is provided a
sleeve or collar & Figure 1 having a female screw thread cut therein into which takes
a tapered or conical nozzle or nose piece Figures 1 and 2; Within the vessel A are
two tubes c and d Figure 1-which may be of wire gauze or formed of a suitable
material or substance perforated to allow of the passage therethrough of the liquids
to be filtered-arranged in the following manner, tube d has adapted to its lower end
a screwed metal collar e which engages with the threads fat lower end of the
nose piece C, above the rim of the aforesaid collar e is placed a ring of indiarubber
or other suitable packing and, down on to this ring is screwed the collar / fixed to the
lower end of tube c, or I may make the two tubes c and d formed in one piece with
the nose piece C thus leaving a space between tube c and d in this space is placed one
or more layers i of filter paper, asbestos, glass wool, or other suitable material according
to the nature of the fluid or liquid to be filtered. In order to render the joint of
nose piece C with vessel A watertight a ring k of indiarubber or other packing is
placed as shown.
C
A series of the tubes above described and furnished with screwed ends formed
of different materials or substances may be kept in reserve for employment in filtering
simple as well as corrosive or volatilo fluids or liquids.
In Figure 21 show a modified form of my filter adapted more specially for kitchen
and domestic purposes, where I enclose the vessel B of the shape best adapted to the
use to which it will be put-containing the previously described arrangement of tubes
and a filtering medium-in a jacket or outer vessel D so arranged that the nozzle C
shall stand at a sufficient height to allow of vessel being placed under it for the
reception of the filtered substance. According to the nature of the substance to be
filtered I may cause a current of hot or cold water-as necessity may require-to
circulate round vessel B in this case the hot or cold water may either enter at the
bottom of the jacket D and leave at the top or it may both enter and leave
at the top.

page_text: Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed I declare that what
I claim is :-
In improved filters made according to my Invention, a suitably shaped vessel
provided with tubes of wire gauze or other suitable perforated material and between
these tubes a packing of filter paper asbestos glass wool or other suitable filtering
medium substantially as and for the purposes set forth.
1000
JAMES STEVENSON,
Gray's Inn Chambers,
20, High Holborn, London, W.C.,
Agent for Applicant.