✨ Patent Amendments
JUNE 27.] THE NEW ZEALAND GAZETTE. 1023
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To strike out the words "cooling and," line 27, page 6.
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To strike out the word "returned," line 27, page 6, and
to insert in place thereof the word "passed." -
To insert at the end of the paragraph terminating in
the word "Sulphate," line 2, page 7, the words, "by the
second stage of the electrolysis." -
To strike out all the words contained in lines 3-11, page
7, and to insert instead the following words, &c.: viz., "The
electro depositing plant consists essentially of a number of
depositing-vats, provided with metallic-iron anodes and
suitable cathodes (preferably, zinc plates), and a number of
similar vats having anodes of insoluble material (such as
carbon), the total depositing-capacity of the plates in the
iron anode vats being about twice that of the carbon anode
vats. The vats." -
To strike out all the words from and including the word
"These," line 19, page 7, to and including the word
"latter," line 29, page 7, and to insert instead the following
words, &c.: viz., "The material employed in the vats illus-
trated in the drawings herewith is filter-cloth. While the
electrolysis is in progress the liquid is first circulated
round the zinc or other cathodes (where the zinc is de-
posited), then around the iron anodes (where ferrous salt is
imparted to the solution), and finally around the carbon or
other insoluble anodes (where the ferrous salt is oxidized to
ferric state)." -
To strike out the words "descending past," line 29,
page 7, and to substitute therefor the words "circulating
around." -
To strike out the words "ascending past the," line 31,
page 7, and to insert instead the words "circulating around
the iron." -
To strike out the words "two cells," line 1, page 8,
and to substitute therefor the word "vats." -
To strike out all the words contained in lines 3-25,
page 8, and to insert in place thereof the words "whilst the
ferrous salt thereby produced is oxidized to the ferric state
by the carbon or other insoluble anodes, as shown by the
following equation." -
To strike out the words "first two cells," line 28,
page 8, and to insert in place thereof the words "iron anode
vats." -
To strike out the words "last or third cell," line 30,
page 8, and to insert instead the words "carbon anode
vats." -
To strike out the words "three cells," line 31, page 8,
and to insert instead the words "the vats." -
To strike out the word "two," line 32, page 8, and to
insert instead the words "the iron anode vats." -
To strike out the words "solution free from iron for
the electrolysis and," lines 2, 3, page 9. -
To strike out the word "oxide," line 28, page 9, and to
insert instead the word "hydrate." -
To strike out the word "reduced," line 33, page 9,
and to insert instead the word "produced." -
To strike out all the words from and including the word
"stout," line 7, page 10, to and including the word
"minimum," line 16, page 10, and to insert in place thereof
the following words: viz., "Sheets of zinc, which may be
melted up in a melting-pot with the deposit obtained, or may
be stripped and used again and again." -
To strike out all the words within brackets, lines
20-22, page 10. -
To prefix to the word "oxide," line 27, page 10, the
letters or word, &c., "hydr-." -
To alter the formula, line 2, page 11, by inserting
"+3H₂O" immediately after "Fe₂Cl₆," and by substi-
tuting "Fe₂(OH)₆" for "Fe₂O₃." -
To insert between the words "way" and "by," line
16, page 11, the words "and may be recovered." -
To insert between the words "chloride" and "may,"
line 21, page 11, the words "and silver." -
To insert between the words "silver" and "in," line
23, page 11, the words "or other objectionable impurities." -
To insert between the words "way" and "is," line
24, page 11, the words "such as by known chemical re-
agents." -
To strike out all the words contained in lines 26-30,
page 11. -
To add "+O" to "SO₃," line 8, page 12.
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To strike out all the words from and including the word
"A," line 33, page 13, to and including the word "acid," line 17, page 15. -
To strike out the words "and cooled," line 23, page 15.
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To insert between the words "electrolytic" and
"cells," line 24, page 15, the words "vats or." -
To strike out the words "two cells," line 25, page 15,
and to insert instead the word "vats." -
To strike out the words "one cell," line 26, page 15,
and to insert instead the word "vats." -
To strike out the words "fourth, and apparatus where
the resulting solution is heated by convenient means, and
fifth," lines 27, 28, page 15, and to insert instead the words
"and fourth." -
To strike out the word "machines," line 2, page 16,
and to insert instead the word "apparatus." -
To insert immediately after the word "knowledge,"
line 6, page 16, the words "and form no part of my inven-
tion." -
To strike out all the words from and including the
word "The," line 7, page 16, to and including the word
"described," line 14, page 17. -
To insert, between the word "described," line 14, page
17, and the word "Having," line 15, page 17, the following
words, figures, &c.: viz., "The accompanying drawings illus-
trate one arrangement of apparatus which I have found suit-
able and useful for the carrying-out of my process. Any
suitable number of such sets of apparatus may be employed,
and the connections and arrangement of the same may
be designed to suit varying conditions and requirements.
Figure 1 is a section of a leaching-vat, with stirrers. Figure 2
shows the arrangement of depositing-vats in a cascade, and
the reservoirs. Figure 3 is a general plan of the electrolysis
plant. The leaching-vat shown in Figure 1 consists of a
plain round vat, provided with stirring appliances. These
may be a number of shoes or prongs fastened to a suitable
frame, upon the upper portion of which is a pulley, which may
be driven by a belt from any convenient motive-power. The
vat is charged from the top, and suitable outlets are pro-
vided for withdrawing the contents. The electro depositing-
vats are arranged in such a manner, and with such pipe and
trough connections between them, that a continual circula-
tion of three separate batches of solution is maintained in the
system, the liquids being circulated at sufficient speed to in-
sure a brisk and continual motion at every part of the plates.
The depositing plant consists of a series of electrolysis vats,
A¹, A², A³, A⁴, A⁵, A⁶, A⁷, A⁸, A⁹, preferably arranged as
shown in Figures 2 and 3, and a number of reservoirs, B¹, B²,
B³, B⁴, B⁵, B⁶. Each of the vats is divided by diaphragms C
of filter-cloth or other suitable material into a number of
compartments, each of which has an inlet-pipe with a fun-
nel D entering near the bottom, and an outlet-pipe E dis-
charging near the top of the compartment. Each of the
vats, A¹, A², A³, A⁴, A⁵, A⁶, contains three iron anodes H, and
two zinc cathodes K, while each of the vats, A⁷, A⁸, A⁹, con-
tains three carbon anodes M, and two zinc cathodes K.
The electrical connections may be made in any suitable
manner. As shown in the drawings, all the plates in one
vat are connected in parallel, and all the vats in series. The
reservoir B¹ has a number of exit-pipes, which discharge into
the funnels of the cathode compartments of the three top
vats A¹, A⁴, and A⁷. The outlet-pipes of these compart-
ments discharge into the funnels of the cathode compart-
ments of the vats A², A⁵, and A⁸. The outlet-pipes of these
compartments discharge into the funnels of the cathode com-
partments of the vats A³, A⁶, and A⁹, and the outlet-pipes of
these compartments discharge into the reservoir B². The
reservoir B² has a number of exit-pipes, which discharge into
the funnels of the iron-anode compartments of the vats A¹
and A⁴. The outlet-pipes of these compartments dis-
charge into the funnels of the iron-anode compartments
of the next vats, A² and A⁵. The outlet-pipes of these
compartments discharge into the iron-anode compartments
of the vats A³ and A⁶, and the outlet-pipes of these compart-
ments discharge into the reservoir B³. The reservoir B³
has exit-pipes which discharge into the funnels of the carbon-
anode compartments of the vat A⁷. The outlet-pipes of these
compartments discharge into the funnels of the carbon-anode
compartments of the vat A⁸. The outlet-pipes of these com-
partments discharge into the funnels of the carbon-anode
compartments of the vat A⁹, and the outlet-pipes of these
compartments discharge into the reservoir B⁴. The pumps
for raising the solutions from the reservoir B² to the reservoir
B³, from the reservoir B⁴ to the reservoir B⁵, as indicated by
the arrows on Fig. 3, and from the reservoir B⁶ to the leach-
ing-vat again, may be of any suitable construction and
materials, and the reservoirs preferably communicate with
larger storage-tanks. The three batches of solution thus
circulating consist of portions of the same stock solution,
each undergoing different stages of the operations. That
circulating round the zinc cathodes must be the solution of
the zinc salts, freed from iron or other harmful impurities,
which has been obtained by leaching the ores, and subse-
quently purifying (if necessary) as hereinbefore described.
The solution circulating around the iron anodes is a similar
lot of solution which has been previously used around the
zinc cathodes, and has thus become more or less depleted of
its zinc. It is circulated around the iron anodes until a suffi-
cient quantity of iron has gone into solution as ferrous salt
to impart the proper strength for a subsequent leaching solu-
tion. The solution circulating around the carbon anodes is
a solution which has formerly circulated around the iron
anodes as above described. It is circulated around the car-
bon anodes until all the iron it contains has been converted
from the ferrous to the ferric state. The periods at which
such changes are made will depend upon various circum-
stances, mainly on the amount of the iron which it is found
convenient to impart to the solution, and the amount of zinc
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NZ Gazette 1895, No 48
✨ LLM interpretation of page content
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Amendments to Patent Specifications
(continued from previous page)
🏭 Trade, Customs & Industry27 June 1895
Patent Amendments, Electrolysis, Zinc, Iron, Anodes, Cathodes