Certain Improvements in the Cages of Hydro Extructors.
Year: 1892

page_text: Date of Application, 10th Feb., 1892
Complete Specification Left, 12th Apr., 1892-Accepted, 9th July, 1892
PROVISIONAL SPECIFICATION.
Certain Improvements in the Cages of Hydro Extructors.
We. JOE WILLIAM COLLINS, and ARTHUR KAYE of the firm of Hartley and
Company of Wood Bottom Mills, Marsden, near Huddersfield, Yorkshire, Wool
Extractors, do hereby declare the nature of this invention to be as follows:-
This invention has reference to hydro extractors and consists of the application
of enamel, porcelain, earthenware or the like to the cages.
In this class of machine the cages are made either of galvanized iron or copper
in order to withstand the action of the acids used in the processes for which the
machine is employed, copper being the better of the two for this purpose but on
account of the cost of copper, the less expensive metal is extensively used. When
galvanized iron is used in the construction of the cage, the acid corrodes or eats
away the iron, and oxidation or rust of the cage or parts of the cage follows,
whereby the materials operated upon in said cage is damaged.
Copper, although better adapted for the purpose than galvanized iron is also
liable to be affected by the acids and requires occasionally to be well cleaned.
In order to render the cage of the machine resistant to the action of acids or
other agents employed in the processes for which the machine is used, we make the
cage of iron or steel or iron, or steel wire, and enamel the same, or coat it with a
thin coating of earthenware, porcelain, or like substances or matters possessing the
same qualities or features as enamel or porcelain.
By the employment of iron or steel in lieu of copper, or of galvanized iron, a
great saving in cost will be effected in such machine, whilst better resisting the
action of the chemicals, the enamelled cage will be kept clean longer and require
less cleaning than copper or galvanized iron. The enamel can be applied to
existing cages equally as well as to new ones.
Dated this 8th day of February 1892.
TASKER & CROSSLEY,
Halifax, Agents.
COMPLETE SPECIFICATION.
Certain Improvements in the Cages of Hydro Extractors.
We, JOE WILLIAM COLLINS, and ARTHUR KAYE of the firm of Hartley and
Company, of Wood Bottom Mills, Marsden, near Huddersfield, Yorkshire, Wool
Extractors, 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 :-
This invention relates to improvements in hydro extractors and its object is to
increase the durability of the rotary metal cages and preserve them from the
corrosive action of the acids or other corrosive liquids extracted from the material
treated in the cage.
The said improvements consist in covering the whole of the perforated cage with
a suitable vitreous enamel that is to say any of the hard glassy enamels usually
applied in the solid form and which when subject to sufficient heat liquify and run
smoothly over the metal work and form a thin smooth and practically noncorrosive
coating.
We may make the cage in the ordinary way of perforated sheet iron or steel or
we may use wire work cages but in either case by thus enamelling them we

page_text: produce more durable and servicable cages than have hitherto been made even
from copper.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare what we
claim is :
Enamelling, or coating the perforated or wire work cage of a hydro-extractor
with a suitable vitreous enamel, substantially as herein described and specified.
Dated this 11th day of April 1892.
DRACUP & NOWELL,
Bradford, Agents.