Improvements in Machines for Crushing and Pulverizing Minerals, Seeds, and other Substances.
Year: 1894

page_text: Date of Application, 27th Nov., 1894-Accepted, 12th Jan., 1895
COMPLETE SPECIFICATION.
Improvements in Machines for Crushing and Pulverizing Minerals,
Seeds, and other Substances.
A communication from abroad by WILLIAM HINRICHS, of No. 706, Pabst
Building, Milwaukee, County of Milwaukee and State of Wisconsin, U.S.A.,
Bridge Builder.
I, JOHN CORRY FELL, of the Firm of Fell and Wilding, of 1 Queen Victoria
Street, in the City of London, Chartered Patent Agent 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 invention consists substantially in the construction and arrangement illustrated
in the accompanying drawings, mentioned in the subjoined Specification, and more
particularly pointed out in the claims.
Like letters refer to the same parts in the several figures of the drawing, in
which:
Figure 1 is a vertical section of a preferred form of my machine ; and
Figure 2 is a plan view of the same.
The letter A designates a hopper or mortar which is preferably arranged vertically,
or approximately so, and composed of any suitable material. It is mounted upon a
spindle B, which may be made hollow for wet grinding and has a bearing formed
for its lower end in any suitable frame F, and may have another bearing, such
as D, surrounding it near the point of connection with the mortar, and serving to
steady it. This hopper or mortar is intended to be revolved at a comparatively
high rate of speed by any suitable engine, whether electric or other form; and
in the drawings I have shown a pulley C through which motion is communicated to
the spindle.
Within this revolving hopper or mortar there is intended to be arranged one or
more series of balls, or equivalent objects, E of magnetic metal. In the drawings,
two series are arranged, one adjacent to the inwardly curved top of the hopper or
mortar, and another series at a lower point acting against a concave partition or
ledge G, formed within such hopper or mortar.
Just above the top of the hopper or mortar is arranged a trough H, composed
of a flange formed in one piece with the hopper, or bolted thereto; and at the
bottom of this trough there is placed a wire screen or foraminated plate I, which
serves to confine within the hopper all objects too large to pass through the meshes
thereof. An inclined spout K extends down into the trough and scoops up the finer
particles which sift through the screen, as they are being revolved by the motion of
the hopper.
Suitable magnets, either permanent or electric, are arranged upon the frame
outside of the hopper, with their poles closely approaching the sides of such hopper.
These magnets should be made quite powerful, as it is found in practice that by
them a crushing power of 1500 pounds may be conveniently applied to the balls
within the hopper.
The operation of the apparatus may be described as follows:
Rapid revolution is given to the hopper which at the time contains the material
to be crushed or pressed, and by centrifugal action such material is necessarily
forced toward the rim or upper portion of such hopper, and thus subjected to the
crushing or pressing action of the balls, which are being turned with great force

page_text: towards the sides of the hopper, by means of the exterior magnets.
As the material
is crushed the finer particles will be forced upwards through the screen into the
trough where it will be delivered through the pointed scoop to any suitable
receptacle.
It is manifest that many variations may be made in the specific construction
described and illustrated without departing from the principle of the invention,
and I therefore do not wish to be understood as limiting myself to such exact
construction.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
1. In a machine for crushing substances, the combination of a revolving hopper,
pestles, and magnets acting upon such pestles, substantially as and for the purpose
set forth.
2. In a machine for crushing substances, the combination of a revolving hopper
or mortar, a series of loose pestles, a foraminated cover to such mortar and a series
of magnets the poles of which are arranged in close proximity to the walls of the
mortar, substantially as and for the purpose set forth.
3. In a machine for crushing substances, the combination of a revolving mortar
or hopper, a series of loose pestles, a foraminated cover for the mortar or
hopper, a trough, and a series of magnets having their poles in close proximity
to the walls of the mortar, substantially as and for the purpose set forth.
4. In a machine for crushing substances, the combination of a revolving mortar
oi hopper provided with an interior circular division, a series of loose metal balls,
and a series of magnets with their poles arranged in close proximity to the walls
the hopper so as to attract such balls, substantially as and for the purpose set
rth.
5. In a machine for crushing substances, the combination of a revolving hopper
or mortar provided with a circular interior partition, a series of metal balls within
such mortar, a trough surrounding such mortar and provided with a foraminated
bottom which serves as a cover for the hopper, a scoop or spout projecting into such
trough and a series of magnets having their poles supported close to the walls of
the bopper and opposite the path of the balls, substantially as and for the purpose
set forth.
Dated this 27th day of November 1894.
FELL & WILDING,
Agents for the Applicant.