Improvements in Filtering and in Filter Presses.
Year: 1889

page_text: Date of Application, 29th May, 1889
Complete Specification Left, 28th Feb., 1890--Accepted, 19th Apr., 1890
PROVISIONAL SPECIFICATION.
[Communicated from abroad by JAMES BAXTER and JAMES MUTER, of Rangoon,
Burmab, Engineers.]
Improvements in Filtering and in Filter Presses.
I FREDERICK NOEL MACKAY of 16 Mark Lane London in the County of Middlesex
Engineer do hereby declare the nature of this invention to be as follows:-
The object is to control the temperature of liquids during filtration in filter presses
and to provide apparatus therefor.
The invention consists First. In causing a heating or refrigerating fluid to circulate
on one side of filter press plates or trays whilst filtration is being conducted on the
other side of the said plates or trays.
Second. In making the plates or trays of filter presses with ways or passages
therethrough and in connecting such ways or passages to appliances of any usual or
suitable construction for causing heating or cooling liquids to circulate.
Third. In constructing filter presses in such manner that the material to be filtered
and the heating or refrigerating fluid may be contained between alternate plates or
trays.
Per pro J. T. KING,
J. Johnson,
Agent.
COMPLETE SPECIFICATION.
Improvements in Filtering and in Filter Presses.
I FREDERICK NOEL MACKAY of 16 Mark Lane, London, in the County of Middlesex,
Engineer, 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 is to control the temperature of liquids during filtration in filter presses
and provide apparatus therefor.
The invention consists First. In causing a heating or refrigerating fluid to circulate
on one side of filter press plates or trays whilst filtration is being conducted on the
other side of the said plates or trays.
Second. In making the plates or trays of filter presses with ways or passages
therethrough and in connecting such ways or passages to appliances of any usual or
suitable construction for causing heating or cooling liquids to circulate.
Third. In constructing filter presses in such manner that the material to be filtered
and the heating or refrigerating fluid may be contained between alternate plates or
trays.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a side elevation, and fig. 2 an end view of a press under my invention:
fig. 3 is a section of a filter plate at A A, and fig. 4 a face view of a filter plate
shewing the usual grooves. a is the passage for the material to be filtered, and as.
usual runs the full length of the press, and may either be in the centre of the plates,
or as shown by the dotted lines, b is the entrance way and c the outflow way for
the heating or refrigerating fluid running the length of the press, d serpentine way
cast in the plate and connecting the ways b and c, e outlet for filtered material, f
shut off and admission cocks and valves. It will be evident that by circulating a
רני...D

page_text: suitably cooled or heated medium through the ways d the material to be filtered may
be kept at any required temperature.
It will be evident that many modifications of presses may be made without departing
from my invention, for instance the ways d may be horizontal, or they may be made
as chambers divided by partitions.
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 :-
First. Maintaining material to be filtered at any required temperature by means
of circulated heated or refrigerated fluid substantially as set forth.
Second. Constructing filter presses with plates or trays having ways or passages
therethrough substantially as and for the purpose set forth.
Third. Constructing filter presses with alternate filtering and heating or cooling
plates or trays.
Dated this 27th day of February 1890.
Per pro J. T. KING,
J. Johnson,
Agent.