Apparatus for Pulverizing Ores and similar materials.
Year: 1891

page_text: Date of Application, 27th Nov., 1891
Complete Specification Left, 27th Aug., 1892-Accepted, 1st Oct., 1892
PROVISIONAL SPECIFICATION.
Apparatus for Pulverizing Ores and similar materials.
I, JAMES JOHN SHEDLOCK of New Barnet in the County of Herts, Engineer,
do hereby declare the nature of this invention to be as follows:→
This invention having for its object the disintegration of ores and other like
substances is carried into effect by admitting the materials into a hopper fitted at
its lower part with a serrated conical chamber in which a cone also provided with
serrations is made to revolve. The materials in passing between the cone and cone
chamber are broken into fine particles which are conveyed by plates on to an
annular bed of any suitable section the surface of which is formed into a series of
inclines. A number of balls or rollers are made to rotate over the surface of the
annular bed being held in position with scrapers by means of levers the opposite
ends of which are connected to a disc or arms attached to the shaft on the upper
end of which is fitted the cone; whilst its lower end suitably supported by bearings
is driven by gearing. The balls or rollers being made to travel up the inclines will
on reaching their highest points fall over thereby alternately subjecting the
materials lying upon the annular bed to a pounding crushing and grinding action
reducing them to an exceedingly fine state of division. Pipes whose mouths are
directed on to the surface of the annular bed are connected with a central chamber
through which a blast of air acting upon the pulverized material will carry it
forward to openings or channels in the casing which may if desired be fitted with
screens from whence it is withdrawn by means of an exhaust. When it is desired
to pulverize the materials in the presence of water then instead of the blast of air,
water is conveyed from the central chamber through the pipes and the stream
directed upon the surface of the annular bed simultaneously with the materials to
be pulverized, which when reduced to the required fineness are carried off by the
openings or channels in the casing. These openings or channels are connected with
a trough through which the water and fine particles in suspension pass and arc
conveyed into a vessel in which the solid portions are allowed to subside, the water
drawn off, and the solid matter removed for further treatment. The whole of the
apparatus is enclosed in a suitable casing and supported by a framework in the base
of which is fitted the driving gear and pulleys.
Dated this 27th day of November 1901
COMPLETE SPECIFICATION.
Apparatus for Pulverizing Ores and similar materials.
I, JAMES JOHN SHEDLOCK, of New Barnet, in the County of Herts, Engineer,
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 has for its object the disintegration of ores and other like substances
and is carried into effect by admitting the materials into a hopper fitted at its
lowest part with a serrated conical chamber in which a cone also provided with
serrations is made to revolve. The materials in passing between the cone and cone
chamber are broken into fine particles which are conveyed by plates on to an
annular bed of any suitable section the surface of which is formed into a series of
inclines. A number of balls or rollers are made to rotate over the surface of the
annular bed being held in position with scrapers by means of levers the opposite
[Price T
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page_text: ends of which are connected to a disc or arms attached to the shaft on the upper
end of which is fitted the cone, whilst its lower end suitably supported by bearings
is driven by gearing. The balls or rollers being made to travel up the inclines will
on reaching their highest points fall over thereby alternately subjecting the
materials lying upon the annular bed to a pounding crushing and grinding action
reducing them to an exceedingly fine state of division. Pipes whose mouths are
directed on to the surface of the annular bed are connected with a central chamber
through which a blast of air acting upon the pulverized material will carry it
forward to openings or channels in the casing which may if desired be fitted with
screens from whence it is withdrawn by means of an exhaust. When it is desired
to pulverize the materials in the presence of water then instead of the blast of air,
water is conveyed from the central chamber through the pipes and the stream
directed. upon the surface of the annular bed simultaneously with the materials to
be pulverized, which when reduced to the required fineness are carried off by the
openings or channels in the casing. These openings or channels are connected with
a trough through which the water and fine particles in suspension pass and are
conveyed into a vessel in which the solid portions are allowed to subside, the water
drawn off, and the solid matter removed for further treatment.
The whole of the apparatus is enclosed in a suitable casing and supported by a
framework in the base of which is fitted the driving gear and pulleys.
Now in order to more fully describe my said invention reference is made to the
accompanying drawing in which the same letters of reference indicate correspond-
ing parts in each of the figures respectively.
Fig. 1 is a sectional elevation.
Fig. 2 a plan with the upper portion of the apparatus removed.
Fig. 3 a section of a portion of annular bed with roller supported by lever
and friction wheel.
Fig. 4 a plan of same.
Fig. 5 a vertical section showing arrangement of central chamber and channel in
casing-and
Fig. 6 is a projection of the annular bed and relative position of the balls or
rollers.
The materials fed into the hopper A fall between the serrated conical chamber B
and the serrated cone C in which they are reduced sufficiently small to permit of
their passing between them at their lower sides. The reduced particles falling upon
the inclined plates D D are conveyed to the annular bed E where they are subjected
to the action of the balls or rollers F held in position by means of the friction
wheel and levers G G whose upper ends are attached to the disc or arms H H ;
scrapers II similarly, supported by levers JJ are also attached to the disc or
arms H H. The cone C, disc or arms H H with the levers G G, J J carrying the
balls or rollers F F and scrapers II are supported and receive motion from the
vertical shaft K driven by the gear wheels L L the latter of which is keyed on to
the main driving shaft M provided with fast and loose pulleys m m'. In order to
remove the finely pulverized material from the apparatus as rapidly as it is
produced, a blast of air or stream of water is directed upon the annular bed E by
the pipes N N connected with the central chamber 0-which is charged by the
pipe P from any convenient source. The air blast or stream of water will carry
the fine particles through the openings R R provided with screens into the
channel S from whence the pulverized particles whether suspended in air or water
may be removed by an exhaust operating through the pipe T. Under certain
circumstances it may be advantageous to reverse the action of the air blast or
stream of water as shown at Fig. 5 in which case the air or water is forced into the
apparatus by the channel U the reduced materials being withdrawn through the
screen W into the central chamber O and removed therefrom by the pipe P.
By regulating the pressure of the air or water supply, the materials may be
retained and subjected to the pulverizing action of the balls or rollers F F upon the
annular bed E for any required time, and the fineness of the materials passing off

page_text: may be determined by the mesh of the screens or W. The formation of the
upper surface of the annular bed E is shown in the projection at Fig. 6 where the
inclined surfaces e e e and the balls or rollers F F F are exhibited in their relative
positions thereby fully explaining the treatment the materials undergo for their
pulverization in being alternately subjected to a pounding, crushing and grinding
operation. In order to reduce the effect of the concussion caused by the blows of
the balls or rollers F F on the annular E its underside rests upon a suitable elastic
material X.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed declare that what 1
claim is :--
The use in apparatus for pulvering materials, of an annular bed on which are
formed a series of inclines or projections, operating in combination with balls or
rollers travelling over the bed in such manner that the said balls or rollers, after
rising up to the top of an incline or projection are made to fall down on to the
lower part of the bed and thus to operate with a percussive and grinding action
the material lying thereon, substantially as described.
Dated this 27th day of August 1892.
Agents for the Applicant.