IMPROVEMENTS IN FILTER PRESSES, AND IN THE MANUFACTURE OF PARTS OF THE SAME
Year: 1879

page_text: LETTERS PATENT to James John Musto, of Clinton Road, Mile End, in the
County of Middlesex, Engineer, and Arthur Wellesley Johnson, of 22, Great
Winchester Street, in the City of London, Engineer, for the Invention of
"IMPROVEMENTS IN FILTER PRESSES, AND IN THE MANUFACTURE OF PARTS OF
THE SAME"
Sealed the 9th April 1880, and dated the 11th October 1879.
PROVISIONAL SPECIFICATION left by the said James John Musto and
Arthur Wellesley Johnson at the Office of the Commissioners of Patents on
the 11th October 1879.
JAMES JOHN MUSTO, of Clinton Road, Mile End, in the County of Middlesex,
Engineer, and ARTHUR WELLESLEY JOHNSON, of 22, Great Winchester Street, in the
City of London, Engineer. "IMPROVEMENTS IN FILTER PRESSES, AND IN THE
MANUFACTURE OF PARTS OF THE SAME.'
"
Our Invention consists, in the first place, in the formation in the end plate of an
air chamber in substitution for a separate chamber. The said air chamber is formed
in the upper central space between the ordinary strengthening ribs of the plate, and
is fitted with a hand hole at the top secured by a cover, which can be easily
removed as required for clearing the chamber.
Our Invention has reference, in the second place, to a mode of fixing the filter
cloths on the filter plates in order to obviate the necessity of tying or folding the
cloths on the plates as usual And this part of our Invention consists in forming
on the outer parts of the plates four of more lugs, in which are inserted or fixed
pins or hooks, on or over which are placed eyelets inserted in the four corners or
other suitable parts of the cloths, thereby securing the cloths with the requisite
degree of tension, and admitting of their easy removal as required by merely
taking the eyelets off from the pins or hooks.
Our Invention consists, in the third place, in an arrangement for washing com-
pletely the soluble substance from the cakes or insoluble matters, and for
economizing the use of washing liquid so as to get the soluble substance in the
cakes in a concentrated form.

page_text: We form in each filter plate two extra holes, and when the plates are screwed
up in the frame the several holes form communication one with another throughout
the whole series of plates in the machine. A channel or passage is formed leading
from the inlet at the bottom of the plate to every odd number chamber, thereby
making a communication at the back of each filter cloth, so that the washing
liquid may flow freely through the corrugations of the plates. The outlet at the
top is made to communicate in a similar manner with every even number chamber,
so that the washing liquid is caused to pass through the cakes before it escapes
from the press through the outlet. By the arrangement, as above stated, the
washing liquid can be allowed to remain in the cakes for any required length of
time by closing or regulating the outlet wash cock.
And our Invention has reference, in the last place, to a mode of facing the filter
plates and other parts of the filter press.
For this purpose a frame or guide is placed or fixed on the face plate outside
the filter plate required to be faced; the saddle or slide rest of the lathe is worked
by means of two small rollers fixed to the saddle so as to work one inside and the
other outside the said frame or guide, which is made of such a shape that it
will guide the tool along the surface of the plate or other part required to be
faced.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said James John Musto and Arthur Wellesley Johnson in the Great Seal
Patent Office on the 10th April 1880.
JAMES JOHN MUSTO, of Clinton Road, Mile End, in the County of Middlesex,
Engineer, and ARTHUR WELLESLEY JOHNSON, of 22, Great Winchester Street, in the
City of London, Engineer. "IMPROVEMENTS IN FILTER PRESSES, AND IN THE
MANUFACTURE OF PARTS OF THE SAME."
Our Invention of "Improvements in Filter Presses, and in the Manufacture of
Parts of the same," consists, in the first place, in the formation in the end plate of
an air chamber in substitution for a separate chamber.
The said air chamber is formed in the upper central space between the ordinary
strengthening ribs of the plate, and is fitted with a hand hole at the top secured
by a cover, which can be easily removed as required for clearing the chamber.
Our Invention has reference, in the second place, to a mode of fixing the filter
cloths on the filter plates in order to obviate the necessity of tying or folding the
cloths on the plates as usual. And this part of our Invention consists in forining
on the outer parts of the plates two or more lugs or bosses in which are inserted
or fixed pins or hooks, on or over which are placed eyelets inserted in the four
corners or other suitable parts of the cloths, thereby securing the cloths with the
requisite degree of tension, and admitting of their easy removal as required by
merely taking the eyelets off from the pins or hooks.
Our Invention consists, in the third place, in an arrangement for washing com-
pletely the soluble substance from the cakes or insoluble matters, and for
economising the use of washing liquid so as to get the soluble substance in the
cakes in a concentrated form. We form in each filter plate two extra holes, and
when the plates are screwed up in the frame the several holes form communication
one with another throughout the whole series of plates in the machine.
A channel or passage is formed leading from the inlet at the bottom of the plate
to every odd number chamber, thereby making a communication at the back of
each filter cloth, so that the washing liquid may flow freely through the corruga-
tions of the plates. The outlet at the top is made to communicate in a similar
manner with every even number chamber, so that the washing liquid is caused to
pass through the cakes before it escapes from the press through the outlet. By
the arrangement, as above stated, the washing liquid can be allowed to remain in
the cakes for any required length of time by closing or regulating the outlet wash
cock.
And our Invention has reference, in the last place, to a mode of facing the filter
plates and other parts of the filter press. For this purpose a frame or guide is
placed or fixed on the face plate of the lathe outside the filter plate required to be
faced; the saddle or side rest of the lathe is worked by means of two small rollers
fixed to the saddle so as to work one inside and the other outside the said frame
or guide, which is made of such a shape that it will guide the tool along the surface
of the plate or other part required to be faced.
Having thus stated the nature of the said Invention, we will proceed to describe
in what manner the same is to be performed by the aid of the accompanying
Drawings, in which are represented some of the parts above referred to.
DESCRIPTION OF THE DRAWINGS.

page_text: is fittted with a hand hole D, which is secured by a cover easily removable for
clearing the chamber as required. Figures 3 to 8 relate to the second part of our
Invention. Fig. 3 shows one of the ordinary filter plates with our improvement
applied thereto; and Fig. 4 is an edge view of the same. E, E, are four lugs
formed in the outer part of the plate or frame, in which lugs are inserted pins or
hooks F, F, as shewn, on or over which can be placed eyelets inserted in the four
corners of the cloths, whereby the cloths can be secured with the requisite degree
of tension, and easily removed as required.
Figures 5 and 6 represent on a larger scale a modification of this mode of fixing
the cloths. In this case the pins or hooks F, F, are screwed into bosses G, G,
instead of in the lugs E, E.
Figures 7 and 8 represent another modification in which the pins or hooks F, F,
are arranged so as to admit of their being turned on a stem, as required, for conve-
nience in fixing and removing the cloths.
Fig. 9 represents in perspective a general view of the press.
With reference to
the third and fourth parts of our Invention above referred to we have not thought
it necessary to illustrate the same by Drawings, as they will be readily understood
from the above statement.
Having thus described the nature of the said Invention and in what manner the
same is to be performed, we hereby declare that what we claim as of our Invention
is,
-
First. The formation of an air chamber in the end plate, as and for the purpose
described.
Secondly. The mode or modes of fixing the filter cloths on the filter plates,
represented in Figures 3, 4, 5, 6, 7, and 8, and described.
Thirdly. The arrangement for washing the soluble substances from the cakes or
insoluble matters, and for economising the use of washing liquid, as hereinbefore
described.
And, lastly. The mode of facing the filter plates and other parts of the filter
press, as hereinbefore described.
In witness whereof, we, the said James John Musto and Arthur Wellesley
Johnson, have hereunto set our hands and seals, the Tenth day of April,
in the year of our Lord One thousand eight hundred and eighty.
LANT
Witness,
WILLIAM SPENCE,
8, Quality Court,
Chancery Lane.
A. W. JOHNSON.
(L.S.)