Improvements in Machinery for Reducing and Crushing Minerals and other Substances and Materials.
Year: 1886

page_text: Date of Application, 2nd July, 1886.
Complete Left, 2nd Apr., 1887.
Complete Accepted, 3rd May, 1887.
Improvements in Machinery for Reducing and Crushing Minerals
and other Substances and Materials.
PERCY RICHARDSON SHILL, Engineer of 37 Worlingham Road East Dulwich
Surrey do hereby declare the nature of this invention to be as follows:-
The object of my. invention is to construct a simple and effective machine for
reducing and crushing minerals or other substances to any degree of fineness either in
a dry state or in conjunction with a flow of water into the machine.
The improvements are particularly applicable to reducing and crushing Cement,
Ganister, Coprolites, Magnetic Oxide, Phosphates, Coal, Charcoal, Gold Quartz and
other ores, materials or substances.
In carrying out my invention I arrange a stationary or revolving Pan of cast iron
or other material of suitable section for the work it has to perform, resting on a flange
base. In the said pan I arrange a ring or path of metal or other suitable material,
which can be removed when required, and on which a series of balls or rollers of
metal or other suitable material revolve. The said balls or rollers are set in motion
by the circular action of the top ring or roller path resting on the said balls or rollers
and are driven by a belt and rigger attached to same and held in position by a
gudgeon or pin passing through the boss and bolted or fixed to the centre of
stationary pan-the said gudgeon or pin can or may be made part of the casting of
the said pan.
When grinding material such as Coal, Charcoal or other soft substances at a slow
rate of speed I may or can dispense with the said gudgeon or pin, and in that case the
construction of machine is more simple without destroying the crushing effect of the
said balls or rollers. When the pan revolves I arrange same with a long boss or
sleeve working on an upright spindle with collar to support same and resting on a
flange base for bolting it in position.
The top ring or roller path is arranged and held securely by arms extending from
the centre boss of same and prevented from revolving by the upright spindle, passing
through the said boss and secured by a pin, cotter or other means, at the same time
allowing a slight vertical movement or play for severe or undue strain."

page_text: A pressure is given to the said stationary top ring or roller path acting upon the balls
or rollers by means of a hand wheel or nut working on a screw at the end of the
vertical spindle acting on a strong spring or any elastic medium, on the boss of the
said arms and thus transmitted to the roller ring or path giving greater crushing
force to the balls or rollers, motion being given to the same by revolving of the pan.
The material to be reduced is fed into the machine from the centre by preference,
and when reduced to the fineness required it escapes at the side or outer diameter of
the revolving or stationary pan and is regulated by one or more adjustable shoots or
slides attached to the said revolving or stationary pan and conveyed away as
required.
Dated this 1st day of July 1886

page_text: Improvements in Machinery for Reducing and Crushing Minerals
and other Substances and Materials.
I PERCY RICHARDSON SHILL of 37 Worlingham Road East Dulwich in the County
of Surrey 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 :-
The object of my invention is the construction of a simple and effective machine for
reducing or crushing minerals or other substances to any degree of fineness either in
a dry state or in conjunction with a flow of water into the machine.
The class of machine to which my said improvements are particularly applicable is
principally used for reducing and crushing cement, ganister, coprolites, magnetic
oxide, phosphates, coal, charcoal, gold quartz and various other minerals and
substances.
In order that my invention may be more readily understood and explained in detail
I have hereunto annexed two sheets of drawings upon which letters of reference are
marked on corresponding parts on all the Figures alike.
DESCRIPTION OF DRAWINGS.
Sheet 1. Fig. 1. is an elevation partly in section of a crushing or reducing mill
embodying my improvements in which a is the revolving casing or pulley preferably
of cast iron of any suitable section I shew in this example 8 balls or rollers & super-
imposed but it must be understood I do not restrict myself to any number of balls or
rollers.
These balls or rollers are caused to revolve or travel round in concentric paths 1
the top case or cover a¹ remaining stationary while the parts ¹ being connected
together revolve with the pan a. The mineral or other substance to be reduced or
crushed is introduced at the apertures c when it descends into the top chambers d
where after being subjected to crushing it finds its way by the passages to the
lower chamber where it is again subjected to a further reducing or crushing
operation after which it is carried by centrifugal force into the circular pan or
collector ³ where after accumulating to a certain height it is carried or wiped round
the said collector by a wiper or brush into the discharging aperture from
whence it is conveyed away by any suitable means or appliance. The central rod e is
for the purpose of transmitting varying pressures to the balls or rollers by means of
the nuts e the whole structure being surmounted on a fixed or rigid base f
Fig. 2. is a plan view of fig. 1.
Fig. 3. is a side elevation of a key (shewn in dotted lines in fig. 2) for locking or
preventing the circular or top roller path A¹ and the inner stem from revolving
with the casing or pulley a around which a strap or band is placed for driving the
same.
יז

page_text: Fig. 5 is a view of a reducing or crushing mill in which the balls or rollers are
arranged in concentric stationary paths 6. The mineral or other substance to be
reduced after being inserted at the apertures c descends into the chamber d and is
caused by centrifugal force to come into contact with the rollers b which crush or
reduce it after which by reason of its fineness it is thrown outwards into the
collector d³ from whence it is removed by the wiper or brush d' down the orifice -d³.
In this case the pulley or casing a is placed beneath instead of above the collector or
pan d³ the lugs are for the purpose of preventing the top roller paths 61 from
revolving with the casing or pulley a. The rod e is for the purpose of applying
varying pressures to the outside rollers by means of the nuts e¹ or by a hand
wheel. The four armed cross-head i is for the purpose of transmitting pressure to
the inside circle of balls or rollers.
Fig. 6. is a plan view of the same shewing the circular concentric arrangement of
the balls or rollers.
Fig. 7 is an elevation partly in section of a more simple arrangement by which the
number of working parts is reduced. In this example the material or substance
to be reduced is inserted at the top e of the revolving case or pulley a where it falls
on an inclined surface d and gradually works its way down to the balls or rollers
where after being reduced or crushed it is thrown by displacement into the collector d³
from whence it escapes by the orifice or shoot the lighter or reduced material
giving place or making way for the heavier material as introduced into the machine.
Fig. 8 is an elevation of another arrangement of crushing mill the top casing or
pulley a having a vertical sleeve d revolving round a pillar g cast on the stationary
main frame f. In this example the material is inserted at the apertures falling
down into the chamber d where it is crushed by the rollers or balls from whence in
its reduced state it is caused to discharge itself by displacement from the machine
by the shoot or orifice d³.
In the above figs. 7 and 8 varying pressures are given to the rollers by means of
one or more circular ring weights e.
Fig. 9 is a plan view of the same.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is :-
In crushing or reducing mills the arrangement of balls or rollers 6 revolving in
circular paths and arranged in the manner and for the purpose as herein substantially
described set forth and fully illustrated in the drawings annexed.
Dated this and dar of Anni 1007
Witness,
ARTHUR MARTIN.
PERCY RICHARDSON SHILL.