Improvements in Machinery for Centrifugally Treating Particles of Metallic or Mineral Bearing Substances of Different Degrees of Specific Gravity.
Year: 1891

page_text: Date of Application, 13th Jan., 1891-Accepted, 7th Mar., 1891
COMPLETE SPECIFICATION.
Improvements in Machinery for Centrifugally Treating Particles of
Metallic or Mineral Bearing Substances of Different Degrees of
Specific Gravity.
I, ORRIN BURTON PECK, Mining Engineer, of 162, Thirty Fourth Street,
Chicago, in the County of Cook and State of Illinois, United States of America,
do hereby declare the nature of my 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 devise means to prevent the fine and powdery
particles treated in the revoluble vessel from escaping until they have been
thoroughly subjected to treatment; and my invention consists in the features and
details of construction hereinafter described and claimed:
In the drawings, Figure 1 is a side elevation partly in section, of my improved
mechanism; Fig. 2 is an enlarged view; vertical section taken on line 2-2 of a
portion of Fig. 1 looking in the direction of the arrow; and Fig. 3 is a plan view
taken on the line 3 of Fig. 1.
In treating the fine and powdery particles of metallic or mineral bearing substances
by the action of centrifugal force in a revoluble vessel, the finer and more powdery
portion of the material treated is often so light or flaky as to render it difficult to
subject it to as complete and thorough treatment as desirable. This is particularly
the case where water is introduced into the revoluble vessel in connection with the
material to be treated, as in such cases the light powdery particles have a tendency
to float on the water and be carried off with it. To prevent this is particularly the
object of my present improvement.
In making my improved machinery, I make a revoluble vessel A of the proper
size, shape, and strength, and mounted on a revoluble shaft B, which may be rotated
by an engine N, as shown in Fig. 1, or by any convenient motive power. I also
prefer to surround the shaft on the inside of the revoluble vessel with a spout or
casing C in which the material, as it is introduced, may be agitated and more
thoroughly intermixed by the rotation of the sleeve D fixed upon and rotating with
the shaft, and provided with pins or extensions d revolving between inwardly
extending flanges c on the spout or casing. This feature need not be further
described, as I do not make it the subject of claims herein. At the bottom of the
sleeve D, however, I provide a collar E, which rotates with the shaft and within
the revoluble vessel. At the bottom of this collar, I connect a sheet or disk of
canvas, or other flexible material, in any convenient manner so that it will be firmly
and securely held and carried around with the rotation of the shaft. This flexible
covering is made of a size and shape to extend up to preferably the top of the
revoluble vessel, and to incline outwardly from its bottom or lower portion to
the top, and to lay or rest against the mass or wall of accumulated material in the
vessel, and adapted to be forced or carried inward by the accumulating material in
the vessel. The action of centrifugal force, as the shaft is rotated carrying the
flexible covering around with it, will cause such covering to spread or assume a
position of tension, so that it will lay or stand out against the sides of the walls of
the revoluble vessel. The material to be treated is intended to be introduced into
the vessel beneath the flexible covering, so that as it is acted upon by centrifugal
force and it is thrown against the walls of the vessel, it will only be able to escape
at the top by forcing a passage between the wall and the flexible covering through
which it may pass. This will cause the material to accumulate and remain in the
vessel long enough to be subjected to thorough and complete treatment.
It will,
however, permit the lighter particles of the material, which are necessarily formed

page_text: toward the interior of the vessel, to gradually creep up under the canvas or cover
to the top, where they will be thrown off or discharged.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is performed, I declare that what I
claim is
In machinery for centrifugally treating particles of metallic or mineral bearing
substances of different degrees of specific gravity, the combination of a revoluble
vessel, a revoluble shaft rotating it as it revolves, and a revoluble flexible covering
within the vessel free or unconfined at the upper edge beneath which the material
is introduced and treated, and from beneath which it forces a way of escape around
the free or unconfined upper edge, substantially as described.
Dated this 13th day of January 1891.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.