improvements in Machines for Breaking or Crusning Stone, ore and such like Materials.
Year: 1885

page_text: improvements in Machines for Breaking or Crusning Stone, ore,
and such like Materials.
GEORGE LOWRY, Engineer "Castleton Foundry" Armley near Leeds, County of
York, England, I do hereby declare the nature of my invention for BREAKING OR
CRUSHING STONE, ORE AND SUCH LIKE MATERIALS to be as follows:
I make the main body of the machine in two parts, the bottom part contains
the eccentric bush and driving gear-in the top part, which swivels round with
the delivery spout to any side of the machine, are the hopper and crushing jaws
or rings.
On the vertical or gyratory shaft, I fix one or more corrugated or toothed taper
rings to form the crusher head.
In the casing which surrounds these I put one or more rings with the large ends
toward the footstep-then with the rings on the gyratory shaft form a stepped
conical hopper to receive the stone or ore to be crushed. Over these I put the
hopper cover, made to grip both top and outside firmly together. I bore a taper
hole in this cover for the end of vertical shaft to move in, into this I fit a cap with
set screws, for the regulating screw in top of gyratory shaft to bear against.
In the lower portion of the case I mount a pair of bevel wheels with the
eccentric bush, for giving motion to the gyratory shaft, passing through the boss of
the driven wheel into a bearing-these are connected by a feather key.
Into this eccentric bush I bore a taper cavity to receive the footstep end of the
gyratory shaft and allow it to move freely. Underneath this is a metal footstep,.
which is made to raise and lower by a taper cotter.
On the gyratory shaft underneath the crushing jaws, I mount the top part of the
inclined spout for discharging the crushed material.
The driving pulleys and fly wheel are mounted in the usual way with slip key
or friction clutch.
.. 200
1
1005

page_text: Improvements in Machines for. Breaking or Crushing Stone, Ore,
and such like Materials.
I GEORGE LOWRY of Armly, in the County, of York, Engineer, do hereby declare
the nature of my invention for IMPROVEMENTS IN MACHINES FOR BREAKING OR
CRUSHING STONE, ORE, & SUCH LIKE MATERIALS 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 machines for breaking or crushing stone, ore, or, similar
material, by a gyratory crushing head, working within a conical hopper, and
comprises certain combinations of parts, whereby the machine is rendered more
efficient, productive & durable also more convenient for duplicating or repairing
the wearing parts.
In the accompanying drawings, fig. 1 sheet 1 is a vertical section of a stone
breaker, or ore crusher constructed according to this invention.
Fig. 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11 are sectional views of details of same.
Fig. 12 on sheet is a vertical section of a modification of crusher head and
concave.
Fig. 13, 14, 15, and 16 are sectional views of details of same.
Fig. 1, is the general view of the machine, of which A forms the base frame,
upon which A¹, swivels in order to bring the shoot to any desired point, for
discharging the broken material without reference to the driving, and to which is
bolted the upper portion of hopper A2, the under side of which is cap shaped in
order to drop over the flanged upper portion of the middle frame A¹, making a
tight fit & bearing firmly on the conical rings E, E¹, E, thus strengthening the
hopper to resist the outward forces & binding the said conical rings securely in
their place. B is the tapered concave hopper. C is the gyratory shaft supported
by the eccentric bush C₁, at the bottom, and at the top by the adjustable taper
bearing C, C, is a steel pin to prevent the shaft C revolving, and C, is an eyebolt
or screw for adjusting the bearing so as to give more or less motion to the top of
the crusher head, as may be required. D, D³, D³, is the triplet crusher head, being
made in three parts and doweled together for the convenience of changing as wear
and tear necessitates, which is more frequently on the lower part than the top.
D³, are the lock nuts for the purpose of keeping the crusher head firmly together.
E, E', E, are the corrugated or wavy surfaced chilled rings doweled together
and made to fit the main casing and readily replaced when worn, the wear takes
place more rapidly towards the bottom of the concave.
.
F is the main shoot bored to fit the shaft, and secured by set screws as shewn at
fig. 1, F¹.
F, is the short adjustable shoot to convey the broken stone or other material to
the main shoot.
4.
F3, is a loose mouth piece for the purpose of conveying the broken material out
of the machine, and is kept in position by a lug F. G is a circular leather cover
which
for the purpose of keeping the dust and grit out of the footstep bearing C¹,

page_text: is secured to the flange G¹, by an iron hoop driven tight on, allowing the cover to.
hang loosely over the inner flange of the casing. G is a tube by which oil is
conveyed for lubricating the said bearing or bush C. H is the fly wheel and
driving pulley cast in one, by which the motion is conveyed through H¹ to the
wheel H which is secured to the eccentric bush C¹ by a feather key H³ allowing
the eccentric bush, which is supported in the bearing above the wheel, to have a
vertical motion through the said wheel when required, so as to adjust the shaft &
crusher head to produce large or small stones, or other material as may be
required.
I is an adjustable footstep bearing through which the tapered cotter passes freely,
bearing on the top edge and by the horizontal motion given to the cotter by means
of the screw I', is drawn backward or forward, thus raising or lowering the said
bearing as required.
Fig. 2 is a plan of hopper A³ shewing adjustable taper bearing C₁ at the top of
the vertical shaft C which gives more or less motion to the top head or crusher
when raised or lowered.
Fig. 3 is a section through X shewing plan of shoot and driving pulley with
outside support.
Fig. 4 is a plan shewing the top ring E2 with form of corrugation also top
head D' on shaft section taken through X¹ fig. 1.
Fig. 5 is a plan of middle ring E¹ with its form of corrugation also middlo.
head D' on the shaft section taken through X' fig. 1.
Fig. 6 is a plan shewing bottom ring E also bottom head Don shaft section
through X3 fig. 1.
Fig. 7 shews plan & sections of different forms of crusher head D fig. 1.
Fig. 8 shews view of slip driving device fixed on shaft H and on the inside of
back of pulley H. This device consists of a pair of arms fixed on the shaft on
which small slotted sectors turn at a these are clipped to the arins by the sett
screws b & are driven by the pins c projecting from the driving pully or fly
wheel allowing the bracket to slide upon the set screw b by means of the slot when
driven out of position by the driving lugs cc caused by any extra force brought to
bear upon the vertical shaft, such as a sledge hammer or crowbar falling into the
hopper.
Fig. 9 is a section taken at the bottom of the shaft as indicated by X* shewing
the full eccentricity of the shaft C.
Fig. 10 is a section taken at the top of the bush indicated by X5 shewing the
reduced eccentricity at the top of the bush Ct.
Fig. 11 shews section and half plan of modification of rings E, E¹, also an
additional modification of crusher head D having a diamond or pointed crushing
surface for the better shaping of the materials broken.
Fig. 12 on sheet 2 is a vertical section shewing another kind of modification of
the crusher head and taper concave hopper J.
In this case the chilled outer rings K are made in two parts & doweled together,
the bottom ring having two tapers and also a saddle back seating, thus giving a
good solid bearing all round upon the casing M. The top ring K being so made as
to drop into the main casing and butt well against the lower ring.
M M is the middle portion of the casing, M¹ is the cover made in arched form to
give more room, when required for the adjustment of the top bearing, it being
fitted & secured in similar manner to A' fig. 1 sheet 1. M is the top taper bearing
of the main vertical shaft adjusted by lock nuts M³ which gives a much larger
range of adjustment than shewn at fig. 1 sheet 1. N N is a vertical, tapered,
flanged, tube, secured by means of screws to the bottom N' of the middle casing,
upon the upper flange N* rests the shoot N which for the convenience of removal
is made in two longitudinal parts and bolted together by the lugs as shewn at N³
fig. 12 sheet 2, and secured to the flange N. The top of the tube N takes inside
the lip or flange, cast upon the underside of the crusher head L' fig. 14 to exclude
all dust & grit, from the inside bearing. ☐ is an adjustable flake trap secured on

page_text: the inside of the main casing, the plan and elevation of which can be seen at fig. 16
this is made in two parts and bolted together for the convenience of changing to a
finer or coarser grid as may be required for the various sizes of materials.
Fig. 13 shews plan of lock nuts M³.
Fig. 14 shews plan & elevation of modified crusher head, as shewn at L' sheet 2.
Fig. 15 shews half plan of top cover, top bearing and adjustable lock nuts.
Fig. 15 shows half plan of middle frame M and corrugated inner chilled rings,
section taken through X.
Fig. 16 shews elevation & plan of one half of adjustable flake trap O.
Having now particularly described and ascertained the nature of my said
invention & in what manner the same is to be performed, I wish it to be
understood that I am aware of the letters patent No. 1995 dated May 7th 1881,
also No. 7987 dated May 20th 1884, granted to W. R. Lake, & that I do not claim
the invention as set out in the respective Specifications thereto.-I declare that
what I claim is―
First. In a machine for breaking stone, crushing metal ores, or such like
material; making the main body of the machine in three castings, the bottom
casting containing the driving gear, the centre one the shoot & the conical
hopper, made to swivel round, & the top one made to clip the outside of the centre
one & bearing firmly on the top of the wavy surfaced, conical, chilled rings.
Substantially as above set forth & for the purpose specified.
Second. Providing the gyratory shaft that carries the crusher head, with a taper
closed eccentric footstep bearing, supported in a bearing on the top side of the
crown or driving wheel. Substantially as above set forth & for the purpose
specified.
Third. The adjustable footstep bearing piece with taper cotter. Substantially as
above set forth & for the purpose specified.
Fourth. The vertical, flanged tube and removable shoot. Substantially as above
set forth & for the purpose specified.
Fifth. The chilled crusher head made in two or more parts telescoped. Sub-
stantially as above set forth & for the purpose specified.
Sixth. The adjustable taper bored bearing for the top end of the gyratory shaft,
with adjusting lock nuts. Substantially as above set forth & for the purpose
specified.
Seventh. The chilled crushing concave, made with two or more wavy surfaces or
corrugated circular rings.
Substantially as above set forth & for the purpose specified.
Eighth. The combination in a stone breaking or ore crushing machine, of a cast
iron self contained frame & a gyratory shaft with crusher head.
Substantially as above set forth & for the purpose specified.
Ninth. In a machine for breaking stone, crushing ore & such like material,
making the crushing surfaces in diamond or toothed form.
Substantially as above set forth & for the purpose specified.
Tenth. The improved machine for breaking or crushing stone ore and such like
material substantially as described and shown in the drawings.
Dated this twenty-fifth day of September, eighteen hundred and eighty six.