Improvements in Machines for Breaking or Crushing Ore, Rock, and the like.
Year: 1895

page_text: Date of Application, 8th Nov., 1895
Complete Specification Left, 5th Aug., 1896-Accepted, 5th Sept., 1895
PROVISIONAL SPECIFICATION.
Improvements in Machines for Breaking or Crushing Ore, Rock, and
the like.
I, WILLIAM SPRATLEY, of Hampden Club, Phoenix Street, King's Cross, in
the County of London, Shorthand Writer, do hereby declare the nature of this
invention (a communication to me by William Wells, of the New Primrose Gold
Mining Company, Limited, of Germiston, near Johannesburg, South African
Republic, Engineer) to be as follows:-
This invention relates to a machine for breaking or crushing ore, rock and the
like and to that class of such machine in which an oscillating jaw is employed, the
object of my said invention being to construct the machine in such a manner that
a continuous or constant crushing shall take place and to improve the construction
of the machine so as to permit of the wearing parts being readily replaced.
According to this invention a double movable jaw is provided working in
conjunction with two rigid crushing surfaces, the said double jaw being suspended
in such a manner that when it is being moved towards one crushing surface the
material is dropping down between the other face of the jaw and the corresponding
crushing surface whereby a continuous crushing on one side or the other is
maintained.
The ends having the rigid crushing surfaces are preferably formed in a single
casting with the sides of the framing so that the double crushing jaw swings in a
rectangular chamber open at the top and bottom to permit of the introduction of
the material to be crushed and of the crushed material dropping out.
Motion is imparted to the double jaw by means of a shaft having an eccentric
portion upon it and working within a block located in a recess in the lower part
of the pendulous double jaw, the bearings of the shaft in the sides of the framing
and the block itself being arranged in the said recess in such a manner that they
can be readily removed for repairs or renewal.
The machine may be driven either directly by means of pulleys upon the main
shaft or through the medium of gearing.
The crushing surfaces both of the fixed jaws and the movable double jaw are
made detachable so that they can be readily renewed.
Dated the 8th day of Narambar 100%
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Machines for Breaking or Crushing Ore, Rock, and
the like.
I, WILLIAM SPRATLEY, of Hampden Club, Phoenix Street, King's Cross, in
the County of London, Shorthand Writer, do hereby declare the nature of this
invention (a communication to me by William Wells, of the New Primrose Gold
Mining Company, Limited, of Germiston, near Johannesburg, South African
Pin 871

page_text: Republic, Engineer,) 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 a machine for breaking or crushing ore, rock and the
like and to that class of such machine in which an oscillating jaw is employed,
the object of my said invention being to construct the machine in such a manner
that a continuous or constant crushing shall take place and to improve the
construction of the machine so as to permit of the wearing parts being readily
replaced.
According to this invention a double movable jaw is provided working in
conjunction with two rigid crushing surfaces, the said double jaw being suspended
in such a manner that when it is being moved towards one crushing surface the
material is dropping down between the other face of the jaw and the corresponding
crushing surface whereby a continuous crushing is maintained.
The ends having the rigid crushing surfaces are preferably formed in a single
casting with the sides of the framing so that the double crushing jaw swings
in a rectangular chamber open at the top and bottom to permit of the introduction
of the material to be crushed and of the crushed material dropping out.
Motion is imparted to the double jaw by means of a shaft having an eccentric
portion upon it and working within a block located in a recess in the lower part
of the pendulous double jaw, the bearings of the shaft in the sides of the framing
and the block itself in the said recess being arranged in such a manner that they
can be readily removed for repairs or renewal.
The machine may be driven either directly by means of pulleys upon the main
shaft or through the medium of gearing.
The crushing surfaces both of the fixed jaws and the movable double jaw are
made detachable so that they can be readily renewed.
To enable my invention to be fully understood I will describe the same by
reference to the accompanying drawings, in which :-
Figure 1 is a plan of a machine for breaking or crushing ore, rock and the like
constructed according to my invention :
Figure 2 is a view half in end elevation and half in transverse section :
Figure 3 is a view half in side elevation and half in longitudinal section :
Figure 4 is a horizontal section on line 4-4 of Figure 3 shewing the eccentric
shaft, the block and the recess in the pendulous double jaw:
Figure 5 is an end elevation of one of the pivot bearings of the pendulous double
jaw:
Figure 6 is a similar view of one of the eccentric-shaft bearings; and,
Figure 7 is a similar view of one of the collars used for securing the driving
pulleys on the eccentric-shaft :
Figure 8 is a horizontal section on the line 8-8 of Figure 3.
a, a indicate the pendulous double movable jaw, and b, b are the rigid crushing
surfaces or fixed jaws at the ends c, c of the framing formed in a single casting
with the sides d, d thereof; e is the pivot or fulcrum of the pendulous double-
jaw a, a which swings in the rectangular chamber fopen at top and bottom and
formed by the said sides and ends of the framing; g is the shaft, and the
eccentric thereon for imparting motion to the double jaw a, a; i is the block
within which the eccentric h works and j is the recess in the lower part k of the
pendulous double jaw in which the block i is located, the said recess being provided
with liners a, a to take the wear of the said block; 1, 1 are the driving pulleys of
the machine mounted on the eccentric shaft g.
The rigid crushing surfaces 6, 6 are arrauged in recesses in the ends c, c of the
framing as clearly shewn in Figures 1, 3 and 8, so that they can be easily lifted
out and replaced by new ones when required and they are secured in position by
means of wedges a', a¹ dropped into recesses in the sides of the framing.
With a like object the crushing surfaces 61, 6¹ of the pendulous double jaw are
arranged in pairs dowelled together as at in recesses in the said jaw, as shewn
in Figure 3, and they are also secured by means of wedges c' and bolts m.

page_text: The bearings n, n of the pivot or fulcrum e are made removable as shewn
in Figures 2 and 5 to allow of repairs or renewal. The bearings o, o of the
eccentric shaft g for a like purpose are simply slid into recesses in the framing as
shewn in Figure 2 and then secured by studs o¹. The driving pulleys 1, 1 are in
turn secured upon the shaft g by means of pins p, p passing through the
bosses q, q of the pulleys and through collars r, formed in halves and keyed
to the shaft and clamped together by means of bolts s as clearly shewn in Figures 2
and 7.
From the foregoing description it will be understood that the shaft g being
revolved by either or both of the pulleys thereon an oscillating motion will be
imparted to the pendulous double jaw a, a so that whilst the ore, rock, or the like
material, fed between the fixed and movable crushing surfaces b, b, b1, b¹, is being
crushed by the swing of the movable jaw to one side of the machine, the said
material is dropping down at the other side of the machine in position to be
crushed by the following swing of the jaw towards that side and so on, the crushing
of the material being therefore practically continuous instead of intermittent as
heretofore.
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. A machine for breaking or crushing ore, rock and the like having a double
pendulous movable jaw working in conjunction with two rigid crushing surfaces in
such a manner that while one face of the jaw is moving towards its corresponding
crushing surface, the other face is receding from its crushing surface so as to allow
the material to drop down into position to be crushed at the following swing of
the pendulous double jaw and so on, substantially as herein before described.
2. In machines for breaking or crushing ore, rock and the like, the combination
with a pendulous double movable jaw, of fixed crushing surfaces arranged
in recesses in the ends of the frame of the machine and wedges adapted to enter
other recesses in the said framing for securing the said crushing surfaces
substantially as, and for the purpose, hereinbefore described and as illustrated in
the accompanying drawings.
3. In machines for breaking or crushing ore, rock and the like, the combination
with a pendulous double movable jaw working in conjunction with fixed crushing
surfaces of a driving shaft, an eccentric thereon a block in which the said eccentric
revolves and a lined recess in the pendulous double jaw in which the block moves
in order to impart motion to the pendulous double jaw, substantially as hereinbefore
described and illustrated in the accompanying drawings.
4. In a machine for breaking or crushing ore, rock and the like, the combination
with a pendulous movable jaw working in conjunction with fixed crushing surfaces,
a driving shaft, an eccentric thereon and a block working in a recess in the said
pendulous jaw, of bearings for the said shaft removably fitted in the frame
of the machine, driving pulleys on the said shaft, and divided collars keyed
and clamped to the shaft and having pins passing through them and through
the bosses of the driving pulleys in order to secure the latter on the shaft,
substantially as set forth and as illustrated in the accompanying drawings.
Dated the 5th day of Anenst 1906
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.