Improvements in Machinery or Apparatus for Breaking or Crushing Rock or other Hard Substances.
Year: 1895

page_text: Date of Application, 4th Mar., 1895
Complete Specification Left, 4th Dec., 1895-Accepted, 29th Feb., 1896
PROVISIONAL SPECIFICATION.
Improvements in Machinery or Apparatus for Breaking or Crushing
Rock or other Hard Substances.
GEORGE FREDERICK WYNNE Plas Gwyn, Muiera near Wrexham Mechanical
Engineer do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in the construction and manufacture of
machinery, or apparatus for breaking or crushing rock or other hard substances.
For this purpose in carrying out my improvements I employ a frame of
approximately cylindrical section.
In the top part of the periphery of this cylinder there is an opening through
which the rock is fed into the machine and in the bottom thereof there is another
cpening forming the outlet for the crushed rock.
Around the inside of this frame there is fitted a living of chilled iron plates
against which the rock is crushed. Longitudinally through the frame there passes
a shaft, the middle part of which is formed into an eccentric upon which is fitted a
core and roller shell.
The position of this roller shell with reference to the before mentioned chilled
shell is such that the opening between them gradually narrows from the top
towards the bottom.
The opening at the bottom near the outlet is adjusted according to the size of
crushed stove required.
This adjustment may be effected in any suitable way but I preferably employ a
double eccentric bearing of novel construction. The inside eccentric forms the
bearing for the shaft and is of similar eccentricity to the outside eccentric into
which it is fitted. These eccentrics are fixed in position by bolts which pass
through the respective flanges of each and into the frame of the machine.
When any adjustment in the position of the crushing roll is required it is effected
by turning the two eccentrics through an equal angle in opposite directions and
6ixing them in the altered position as before explained.
The inside of the core which carries the roller shell and which works upon the
eccentric is cast hollow and this hollow space forms a reservoir for containing a
quantity of oil which is sufficient to lubricate the bearing of the eccentric for a
considerable length of time without replenishing.
The oil contained in this reservoir may be lifted up and poured over the bearing
when working by ribs being cast inside the space containing the oil or by buckets
being formed in the reservoir itself or by a chain or ring passing over the shaft
and dipping into the oil supply or in any other suitable way.
The dust and dirt which may work down between the roller and the side of the
frame are prevented from getting on the bearing by the interposition (between the
place where such grit or dirt could fall and the bearing) of a disc of suitable
limensions which revolves in a recess formed in the frame and behind the liner
plate fixed inside the frame or body of the machine.
As an additional protection a circular ring of metal is pressed against this
evolving disc by a ring of india-rubber a spring or other suitable device in such a
nanner that before any substance could reach the bearing it would have to pass
etween the ring and the disc.

page_text: The manner of working the machine isins.follows; the pièces of rock which are
fed into the opening at the top of the machine fall into the contracting space
between the chilled lining and the roller shell.
On the shaft being revolved an eccentric motion is imparted to the roller shell
which crushes any pieces of rock between the e two surfaces.
It will be seen that this action takes place upon both sides of the roller shell, the
machine thus having double the crushing capacity as compared with a stone-breaker
of ordinary constrnction.
Dated this Second day of March 1895.
Improvements in Machinery or Apparatus for Breaking or Orushing
Rock or other Hard Substances.
GEORGE FREDERICK WYNNE of Plas Gwyn Muiera near Wrexham, 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 relates to improvements in the construction and manufacture of
machinery, or apparatus for breaking or crushing rock or other hard substances.
Referring to the drawing A is a frame of any suitable section.
In the top part of this frame there is an opening B through which the rock is
fed into the machine and in the bottom thereof there is another opening C forming
the outlet for the crushed rock.
Around the inside of this frame there is fitted a lining of chilled iron plates D
against which the rock is crushed. Longitudinally through the frame there passes
a shaft E the middle part of which is formed into an eccentric F upon which is
fitted a core G and roller shell H.
The position of this roller shell with reference to the before mentioned chilled
lining is such that the opening between them gradually narrows from the top
towards the bottom. The opening at the bottom near the outlet is adjusted
according to the size of crushed stone required. This adjustment may be effected
in any suitable way. In one arrangement I employ a double eccentric bearing of
novel construction.
The inside occentric 1 forms the bearing for the shaft and is of similar
eccentricity to the outside eccentric J into which it is fitted. These eccentrics are
fixed in position by bolts K which pass through the respective flanges of each and
into the frame of the machine. When any adjustment in the position of the
crushing roll is required it is effected by turning the two eccentrics through an
equal angle in opposite directions and fixing them in the altered position as before
explained. Iustead howover of regulating the size of stuff crushed by raising or
lowering the shaft I may obviously keep the shaft stationary and make the sides of
the frame adjustable bringing them nearer or further from the roll H either by the
insertion of wedges or packing picces between the moveable sides and the frame of
the machine or any other suitable way. The inside of the core which carries the
roller shell and which works upon the eccentric is cast hollow and this hollow
space L forms a reservoir for containing a quantity of oil which is sufficient to
lubricate the bearing of the eccentric for a considerable length of time without
replenishing.
The oil coutained in this reservoir may be lifted up and poured over the bearing
when working by ribs being cast inside the space containing the oil or by buckets
being formed in the reservoir itself or by a chain or ring passing over the shaft and
dipping into the oil supply or in any other suitable way. The dust and dirt which

page_text: may work down between the roller and the side of the frame are prevented from
getting on the bearing by the interposition (between the place where such grit or
dirt could fall on the bearing) of a disc M of suitable dimensions which revolves
in a recess formed in the frame and behind the liner plate N fixed inside the frame
or body of the machine. As an additional protection a circular ring of metal O is
pressed against this revolving disc by a ring of india rubber P, a spring or other
suitable device iu such a manner that before any substance could reach the bearing.
it would have to pass between the ring and the disc. The manner of working the
machine is as follows:-The pieces of rock which are fed into the opening at the
top of the machine fall into the contracting space between the chilled lining and
the roller shell. On the shaft being revolved an eccentric motion is imparted to
the roller shell which crushes any pieces of rock between these two surfaces. It
will be seen that this action takes place upon both sides of the roller shell, the
machine thus having double the crushing capacity as compared with a stone.
breaker of ordinary construction.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, 1 declare that what.
I claim is,
1. The arrangement and construction of a stone breaker consisting of an internal
roller having an eccentric motion the rock being crushed between the roller shell
and the lining or side of the external frame substantially as described.
2. In a stone breaker the arrangement of a double eccentric bearing, the shaft
centre being raised or lowered by moving the eccentrics through an equal`angle in
opposite directious substantially as described.
3. The modification before described for regulating the size of stuff crushed
consisting of an eccentrically moving roller shell working in conjunction with a
frame capable of adjustment relatively thereto substantially as described.
4. In a stone breaker the arrangement of an eccentrically moving roller shell.
constructed in such a way as to form a reservoir for holding a supply of oil for
lubricating the eccentric which works therein substantially as described.
5. In a stone breaker the arrangement for keeping off the dirt and grit from the
bearings consisting of a disc of metal interposed between the interior of the breaker
and the bearing to be protected substantially as described.
6. In a stone breaker the arrangement for keeping off the dirt and grit from the
bearings consisting of a disc of metal interposed between the interior of the breaker
and the bearing to be protected in combination with an annular ring or other
equivalent device pressed into contact with the before mentioned disc by an india.
rubber ring, spring, or other suitable device substantially as described.
Dated this 3rd day of December 1895.
GEORGE FREDERICK WYNNE.