other Hard or Brittle.
Year: 1885

page_text: and other Hard or Brittle. Substances.
We, RICHARD MORRIS of Beechfield Doncaster in the County of York, Engineer
and JAMES WOOD of West Stockwith in the County of Nottingham Engineer do
hereby declare the nature of said Invention for "IMPROVEMENTS IN APPARATUS
FOR GRINDING OR REDUCING QUARTZ AND OTHER HARD OR BRITTLE SUBSTANCES
to be as follows:-
"
This Invention has for its object to provide a simple and efficient apparatus for
grinding or reducing quartz and other hard or brittle substances. According to
this Invention a ring (preferably of hard steel) is mounted between or upon
antifriction rollers and a motion of rotation is given to it from any suitable motor
by means of a pinion or a worm gearing with teeth formed on the periphery of the
ring or by other suitable gearing. Inside the said ring is situated a roller bearing
upon the inner periphery of the ring the said roller being mounted in bearings
provided with springs and screws or levers by which the pressure on the periphery
of the ring may be increased or diminished as desired. The material to be ground
or reduced is fed through a suitable guide or hopper to between the roller and the
ring and a scraper or the like may be fixed to the framing to divert the material
after it is ground or reduced,

page_text: Improvements in Apparatus for Grinding or Reducing Quartz
and other Hard or Brittle Substances.
We, RICHARD MORRIS, of Beechfield, Doncaster, in the County of York Engineer
and JAMES WOOD of West Stock with in the County of Nottingham, 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 to provide a simple and efficient apparatus for
grinding or reducing quartz and other hard or brittle substances.
According to this Invention a ring (preferably of mild steel) is mounted between
or upon antifriction rollers and a motion of rotation is given to it from any suitable
motor by means of a pinion or a worin gearing with teeth formed in the periphery
of the ring or by other suitable gearing. Inside the said ring is situated a roller
bearing upon the inner periphery of the ring the said roller being mounted in
bearings provided with springs and screws or levers by which the pressure on the
periphery of the ring may be increased or diminished as desired. The material to
be ground or reduced is fed between the roller and the ring through a suitable
guide or hopper and a scraper or the like may be fixed to the framing to divert
the material after it is ground or reduced and elevators and separators may be
combined with the grinder proper to constitute a completely self contained mill
and adjuncts.
And in order that our said Invention may be fully understood we shall now
proceed more particularly to describe the same and for that purpose shall refer to
the several figures on the annexed sheet of drawings the same letters of reference
indicating corresponding parts in all the figures.
Figure 1 is a side elevation and Figure 2 is a transverse vertical section of a
machine constructed according to this Invention A is a bed plate upon which are
mounted strong standards B and bearings or plummer blocks C for the axes of
rollers C² and Č³ Upon these rollers is supported the strong steel ring D formed
with teeth upon its external periphery, with which gears a wheel E driven from
any suitable motor by ordinary or convenient means of rotating such gear. The
rollers C and C³ are recessed as shewn at c to accomodate the teeth on the
periphery of the ring D. This ring has a renewable lining D' of cast iron or other
suitable material, and bearing upon the lower portion of this lining is a roller F
the axis of which is mounted in bearing blocks G situated in slots a in the
standards B. Springs H bear upon the said blocks G so as to press the roller F
upon the renewable lining D₁ with a greater or lesser force according to the
adjustment of the screws I working in the screw boxes a³ in the standards B and
compressing the springs to a greater or lesser degree between the tops of the
blocks G and the plates J. The material to be crushed or reduced is fed into the
hopper A by which it is conducted to between the roller F and the internal
periphery of the ring D¹ and is there ground as the ring is rotated by the external
gearing. As the crushed or reduced material passes from beneath or to the
opposite side of the roller F it is diverted by the scraper K from off the ring D

page_text: and is caused to fall into conducting shoots L by which it is conducted to any
suitable place or receptacle but by preference into the box or case of an elevator M
by which the crushed material is carried up and deposited in a pneumatic
separator N wherein the fine ground material is separated and deposited in a
receptacle provided for that purpose whilst that which has not been sufficiently
reduced is conducted back to the hopper A2 to be again subjected to the crushing
action of the roller F.
Although I have shewn in the drawings springs and screws for adjusting the
pressure between the ring D and roller F it will be understood that their
equivalents such as weighted levers may be used in place thereof. It will also be
understood that frictional gearing or an ordinary toothed pinion gearing with an
ordinary toothed ring on the external periphery of the ring D may be substituted
for the gearing shewn in the drawings.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed we declare that what
we claim is
First. In mills or apparatus for grinding or reducing hard or brittle substances
and having in combination a ring and roller situated in the interior thereof between
which the substances are ground or reduced and the employment of springs and
screws or levers by which the degree of pressure of the grinding or reducing
surfaces can be regulated substantially as hereinbefore described.
Second. In mills or apparatus for grinding or reducing hard or brittle
substances and having in combination a ring and roller situated in the interior
thereof between which the substances are ground or reduced, the employment of
means for rotating the said ring from the external periphery thereof, substantially
as hereinbefore described.
Third. The arrangement and combination of parts constituting the self con-
tained and complete apparatus for grinding or reducing other hard or brittle
substances substantially as herein before described and illustrated in the accom-
panying drawings.
RICHARD MORRIS.
JAMES WOOD.