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Oct. 15, 1946.
Filed May 31., 1943
2 Sheets-Sheet 1 '
\n .
A 2' TOE/V596; '
Oct. 15, 1946.
H. H.‘ RU-h‘rIPEL
' 2,409,391
Fl'il-ed May :51, 1943
2 Sheets-Sheet 2v
Patented Oct. 15, 1946
Harvey H. Rumpel, Milwaukee, Wis., assignor to
Smith Engineering Works, Milwaukee, Wis., a
corporation of Wisconsin
Application May 31, 1943, Serial No.'489,108
4 Claims.
(o1. 241~20s>
terposed between the lower portion of the head
and the annular sealing member carried by the
driving gear but which is spaced from the head,
more speci?cally to various improvements in the
to function properly at all times, to provide some
construction and operation of gyratory crushers
means for effecting vertical adjustment of the
for rock, ore, and similar materials.
head along the ?xed column, but such adjusting
Generally de?ned, an object of the invention
means should avoid puncturing the head in a
is to provide an improved crusher which is sim
which might permit foreign matter from
ple‘ and durable in construction, and which is also
entering the eccentric chamber, or which will en
highly efficient in operation.
It has heretofore been proposed as shown in 10 able lubricant to escape from this chamber.
A further speci?c object of this invention is to
my prior Patent No. 2,158,779, granted May 16,
provide improved means for ‘effecting some
1939, to provide a sturdy and compact gyratory
vertical adjustment of the head relative to the
crusher assemblage comprising a frame having a
stationary column, in order to maintain most ef
?xed central upright column, an eccentric jour~
fective clearance between the constantly rotating
nalled for rotation upon said column and sup
sealing member and the normally non-rotating
ported upon a thrust bearing surrounding a lower
crushinghead, which however, is adapted to ro
portion of the column, a crushing concave tilt
tate independently of the member.
ably supported on the frame, a crushing head
These and other speci?c objects and advan
gyratable by and freely rotatable about the ec
centric within the concave and resting through 20 tages of the present invention will be apparent
from the ‘following detailed description.
a supporting plate upon the top of the column,
' A clear conception of the several features con
and a sealing ring coacting through annular seals
stituting my present'improvement, and of the
with the frame and head to positively prevent
mode of constructing and of operating gyratory
dust and grit from reaching the otherwise totally
crushers embodying the invention, may be had
concealed eccentric'and its driving gear.
referring to the drawings accompanying and
One speci?c object of my present invention is
a part of this speci?cation, wherein like
to provide various improvements in gyratory
reference characters designate the same or simi
crushers of the above described general type,
lar parts in the various views.
whereby the structures thereof are simpli?ed and
strengthened, while the operating e?iciency is en 30 Fig. 1 is a central vertical section through ‘a
My present invention relates generally to im
provements in the art of crushing, and relates
hanced to a maximum.
typical gyratory crushen embodying the present
improvements ;
It is desirable in crusher assemblages'of this
kind, to have the central column very rigidly
attached to- the frame With the top surface of
the column disposed in a de?nite horizontal
plane'with respect to the crushing chamber and
concave, so that uniform crushing will always re
sult, and since the upper overhanging portion of
Fig. 2 is a transverse horizontal section through
the lower portion of the crusher of Fig. 1, taken
through‘the central column and its support, along
the line 2-2;
Fig. 3 is a fragmentary central vertical section
through‘ a modi?cation of the gyratory crusher
shown in Fig. l; and
the column is subject to enormous lateral pres
Fig. 1i is a fragmentary central vertical section
sures tending to loosen the same and the upper 40
showing a modi?ed mounting for the central
column surface is also subject to wear, provision
should be made for periodically tightening the
While‘ my present invention has been shown‘
column in its ?xed supporting socket if and when
and described as being speci?cally embodied in a
the column becomes loosened relative ‘ to the
particular type of gyratory crusher having a
frame, and for replacing the column when ex
conical crushing headcooperating with a conical
cessively worn.
concave ?aring in the same general direction to
Another speci?c ‘object of the present inven- .
provide an outwardly ?aring crushing zone, it is
tion is therefore, to, provide an improved mount
ing and support forthe central column, and sim
ple but effective means for periodically‘retight
ening the column when loosened and for remov
ing and replacing the same whenever desired.
It is also desirable in order to maintain uni
formity in size of the crushed product and also
nctmy desire'or intent to thereby unnecessarily
restrict the scope or utility of the ‘improvements
which may be advantageously applied to other
types of machines having diversely shaped crush
ing heads and concaves.
The improved gyratory crusher shown in the
in order to cause the annular seals which are in- -enbi drawings by way of illustration, comprises in gen
eral a sturdy normally stationary main frame 5
having a strong central upright cylindrical col
umn or shaft 6 rigidly but adjustably secured to
the lower hub portion 1 thereof; an upright ec
centric 8 having a cylindrical inner surface or
bore 9 rotatably engaging the outer side surface
of the column shaft 6 and also being provided
gagement with the plate 28, the column will be
?rmly clamped and positioned. This assemblage
besides permitting tightening of the column 6,
will also permit ready removal and replacement
The frustro-conical gyratory crushing head II
is provided with an annular renewable mantle 32
with an outer cylindrical eccentric surface I!) the
adjacent to the crushing chamber I 6, this mantle
central axis of which is disposed at an angle to
being held ?rmly in place by means of a ring nut
the central axis of the bore 9; a frustro-conical 10. 33 which is adjustable along a threaded integral
crushing member or head ll having an internal
upper projection 343 of the head, and coacts with
cylindrical bore I 2 rotatably coacting with the
the upper end surface of the mantle 32 through
outer eccentric surface ill and being provided with
a top plate 35 and a frustro-conical spacer ring
an integral imperforate top portion l3 extending
both disposed above the active crushing zone
across but spaced vertically from the upper ex 15 It. As previously indicated, the upper portion I3
tremities of the shaft 6 and eccentric 8; a loose
of the head I! provides an effective seal for the
element or thrust block l4 interposed within the
upper portions of the column shaft 6 and eccen
space between the top head portion 53 and the
tric 8, and in order to seal the lower head portion
upper end of the column shaft 6 for supporting
against entry of grit and escape of lubricant, an
the movable head H directly upon the ?xed col 20 annular sealing member 3? is interposed between
umn; an annular crushing member or normally
the head ll and frame 5. This member 31 is ro
?xed concave 15 having an adjustable support
tatable with the eccentric 8 and driving gear I‘!
associated with the frame 5, the concave sur
and has a bore formed concentric with the outer
rounding and being spaced from the head II to
cylindrical surface !2 of the eccentric, and slid
provide a downwardly and outwardly ?aring
ing seal rings 33, 39 are interposed between the
crushing zone or chamber l6; and driving mech
member 3‘! and the frame 5 and head H respec
anism for the crusher including a bevel gear ll
tively. Additional annular cylindrical sealing
?rmly secured to the lower end of the eccentric
bands 156 are also interposed between the ?xed
8 and a bevel pinion I 8 meshing with the gear
frame 5 and the revolving member 31, and sim
and secured to a countershaft l9 which also car 30 ilar sealing bands él are likewise interposed be
ries a driving pulley 20 and is journalled forro
tween the rotating member 37 and the relatively
tation in a bearing 2| mounted upon the main
revolvable head II, but direct contact between
frame '5.
the head H and member 31 must be avoided.
As shown in Figs. 1 and 2, the central hub
While the sealing rings 38, 39 are adapted to slide
‘I of the main frame 5 is rigidly connected to the 35 vertically and to thereby compensate for drop
outer annular wall thereof by means of a series
ping of the head due to wear in the thrust bear
of integral radiating ribs 22 and a diaphragm 23
ings, the sealing bands 4| will not accommodate
so as to provide a space for delivery of the crushed
extensive vertical displacement, and since direct
product by gravity from the lower annular dis
charge opening of the crushing chamber I6; and
contact between the head i I and member 31 must
be avoided because these elements are not always
the central column shaft 6 may be rigidly but
removably secured to the hub ‘I in the following
manner in order to permit convenient tightening
of this column in case it becomes loosened. The
lower end portion 24 of the shaft 6 is tapered and
snugly embraced by an internally tapered longi
tudinally split sleeve 25 the outer cylindrical sur
face of which snugly engages the central hub
bore 26, and the lower extremity of which rests
simultaneously rotatable, provision should be
made for raising the head to compensate for
As previously indicated, the gyratory head ll
' rests upon the top of the column '5 through a
loose thrust block 84, and as shown in Figs. 1 and
2, this block M has a plane lower surface 42 slid
ably engaging a plane horizontal surface at the
top of the column 6, and also has a spherically
upon a series of superimposed annular shims 21, 50 concave upper surface 43 slidably engaging the
see Figs. 1 and 2. A sturdy lower plate 28 is ?rmly
underside of a supporting block M which is se
but detachably secured to the bottom of the ?xed
cured to and coacts with the head I! through a
hub l by means of a series of stud and nut assem
series of plate shims 45. The block 64 and shims
blages 2S, and the lower extremity of the column
135 are snugly con?ned within a central recess
shaft 6 has several studs 30 secured thereto and 55 formed in the integral top portion [3 ‘of the head
penetrating holes in the plate 28, the outer
IS, and are prevented from rotating relative to
threaded ends of these studs 30 being provided
the head by means of one or more dowel pins 46.
with clamping nuts 3i. Since the column shaft
The intervening thrust block M is adapted to
6 must be rigidly connected to the frame 5 at
permit free rotation of the head ll about its own
all times and the top of the column should be 60 central inclined axis, and gyration thereof by the
accurately disposed with respect to the crushing
eccentric 8, while the weight of the head and some
zone !6, the improved mounting assembly will en
of the crushing pressures are transmitted directly
able such rigid connection and proper location of
to the ?xed column 5, and the loose laterally slid
the column by permitting the split clamping
able block ill will also compensate for wear be
sleeve 25 to be raised or lowered upon insertion or
tween the head and its actuating eccentric 8.
removal of one or more of the shims 27, and by
subsequently permitting utilization of the studs
The weight of the eccentric 8 which is rotatable
about the column 6, as well as that of the gear
30 and nuts 3! to draw the shaft 6 downwardly
it and member 3?, is borne by a lower thrust
so as to cause the tapered portion 24 to spread
hearing it? carried directly by the frame hub ‘I,
the sleeve into snug engagement with the hub 70 and this thrust bearing 4'? is not subjected to the
bore 25. The bottom of the column 6 must always
weight of the head M. It will be noted, that by
be in contact with the lower plate 28, and the
removing or adding one'or more of the shims 45,
addition or removal of shims 21 should therefore
the crushing head i I may be lowered or raised
be such that when the nuts 3| are manipulated
so as to cause the bottom of the head H to prop
so as to draw the column B downwardly into en
erly cooperate with and to remain spaced from
the sealing member 31, and the head and mantle
assemblage is freely vertically removable for such
purpose, when the concave assembly has been
removed. The shims 45 may also be utilized in
order to compensate for excessive wear on the
top of the ?xed central column. In the modi?ca
tion the upper portion I3’ of the gyratory head II
is provided with a plane surface slidably coacting
with a smooth surface 42' on the upper side ofthe
thrust block l4’, and this loose block M’ has a
lower spherically convex surface 43’ which slid
thrust block l4, and cooperate with the column
ably engages a concave surface formed in another
adjusting shims and with the renewable thrust
44' which is secured to and coacts with the
bearing plate 41 to maintain proper cooperation
top of the column shaft 6 through plate shims
between the head ll,‘ member 31 and sealing
10 45. The ?xed block 44' is provided with a recess
bands 4|.
in which the shims 45 and the top of the column?
The normally stationary crushing member or
are located, and is prevented from rotating rela
concave i5 is provided with an annular frustro
tive to the stationary column by means of one or
conical and renewable liner 48 adjacent to the
more dowel pins 46. The head I l of the modi?ed
crushing zone l6, and may be tiltably and bodily
upwardly movably supported upon a special sup 15 structure is also freely rotatable and gyratable
relative to the column 6 and the weight of this
port which is separate from the frame 5, this
crushing head is likewise borne directly by the
support comprising an annular adjustable sup
6 through the blocks i4’, 44’, while the
porting member or ring 49, as illustrated in Fig. 1.‘
shims 45 provide for vertical adjustment of the
The concave H‘: has an integral upper supporting
relative to the column shaft and may be
?ange 50 located well above the effective crush 20 head
compensate for wear as previously de
ing zone, and this ?ange 50 has a downwardly
open annular recess 5| therein which coacts with
The mechanism for detachably but rigidly
an annular upper projection 52 formed directly
attaching the column 6 to the central huh ‘I of
on the ring 49 so as to provide a horizontal plane
of separation or tilting of the concave due to 25 the frame 5, may also be varied as shown in Fig. ll,
by modifying the lower end 24 of the column 6
abnormal crushing stresses, which is consider
and the split clamping collar or sleeve 25. In
ably above the upper inlet opening of the cham
this modi?cation, the lower end 24 of the upright
ber l6, and which will produce tilting motion of
column 8 is truly cylindrical and snugly engages
the concave liner surface approximately normal
a cylindrical central bore in the longitudinally
to the adjacent head mantle surface. A series
split sleeve 25’. The exterior of the split sleeve
of relatively stiff compression springs 53 nor
25' is tapered to ?t a tapered bore 28' formed in
mally coact with the top of the concave ?ange
the frame hub l’; and annular shims 21 are
58 and react against the underside of a sturdy
again interposed between the lower end of the
spider 54 which is ?rmly supported from the
adjusting ring 49 by a series of adjustable tension 35 sleeve 25’ and the lower plate 28, while the lower
end of the column 6 is drawn into direct contact
bolts 55; and the spider 54 may also provide a
with this plate 28 by means of studs 30 and nuts 3i
support for a material supply bin or hopper 56
coacting therewith. This modi?cation obviously
communicating with the central upper open end
functions practically the same as the column‘~
of the concave I5 which converges toward the,
clamping and tightening assemblage of Fig. 1.
upper end of the crushing zone [6.
The concave supporting and adjusting ring
49 also has lower internal screw threads 51 which
coact with threads formed on a wedge ring 53
the interior of which in turn coacts with a frustro
conical outer surface 59 formed on the annular
outer wall of the frame 5, and the adjusting ring
49 is adapted to be rotated upon the wedge ring
58 with the aid of a prying bar or other mecha
nism applied to notches 68 formed in the, lower
portion of the supporting ring 49. A series of
jack screws 5| mounted on the frame 5 beneath
the wedge ring 58, may be utilized to force this
Since the normal operation of the several
Crushers shown and described is practically the
same, it will suflice to describe the operation of
the machine of Figs. 1 and 2. During normal
operation of the improved gyratory crusher as
semblage, the drive shaft I9 is normally being
rotated by power applied to the pulley 20, thereby
imparting relatively rapid rotation to the eccen
trio 8 through the pinion l8 and gear ll. This
rotation of the eccentric 8 produces rapid gyra
tion of the head II and its mantle 32, relative
to the concave l5 and liner 48, while at the same
time permitting free rotation of the head H
the outer eccentric surface [0. The mate
thereby lock the concave l5 and its supporting
ring 49 in any desired position of vertical adjust CI! Ci rial which‘is admited to the crushing chamber
I6 from the supply hopper 56, is subjected to a
ment; and in order to maintain a dust seal be
of crushing impulses and gravitates
tween the ring 49 and the outer wall of the frame
downwardly through the chamber I6, being
5, an annular apron 62 is secured to the ring 49
eventually sufficiently reduced and discharged
and is caused to coact with a sealing ring 63 car
from the lower end of the crushing zone through
ring upwardly along the tapered surface 59 to
ried by the frame 5 so as to permit relative ver
the interior of the main frame 5. It is to be
tical displacement of these parts without break
understood that while the crusher is operating,
ing the seal. The interior of the frame 5 adjacent
lubricant will be constantly forced through pas
to the discharge opening of the crushing zone
sages in the column 6 and will be distributed
[6 and below the apron 82 is also provided with
an annular liner 84 for receiving the impact of the 65 along grooves in the eccentric 8 and thrust block
M to the various bearing surfaces of the machine,
?nal crushed product and for directing this prod
in order to maintain this lubricant free from
uct downwardly; and the diaphragm 23 and bear
grit and other foreign material, the seals afforded
ing 2| are also provided with protecting plates
65 as depicted in Fig. 1.
The modi?ed gyratory crusher structure of Fig.
3 is quite similar in structure and operation to
that shown and described in connection with Figs.
‘ by the seal rings 38, 39 andby the annular seal
ing bands 40, 4| must be maintained in tight con
dition. If it becomes desirable to vary the size of
the ?nal product discharged. from the crusher.
this size may be readily varied by releasing the
1 and 2, and the modi?cation involves a difference
jack screw BI and adjusting the concave support
in the construction and disposition of the thrust
ing ring 49 along the annular wedge 58 and rela
plate located between the crushing head and the . 75
tive to the frame 5. If an abnormally hard piece
of material is admitted to the crushing zone IS,
the safety springs 53 will become effective to
permit the concave 15 to either rise bodily from
the supporting and adjusting ring projection 52,
or to tilt thereon sufficiently to permit the ob
struction to pass through the crusher without
doing material damage. Because of the fact that
most effective relief of excess pressures due to
abnormal conditions of operation. The improved
seal afforded by the apron ring 62 and sealing
ring 63, insures maintenance of an effective seal
between the concave l5 and frame 5 at all times,
by virtue of the fact that the annular apron 62
is formed separate from the annular impact ring
64 and is always spaced from the discharge zone.
the plane of tilting between the concave I5 and
its supporting ring 139 - is located considerably 10 The entire crusher structure can obviously be
manufactured at moderate cost and the parts
above the crushing chamber it‘, relatively slight
tilting action will relieve considerable excess
pressure and will permit relatively large and
thereof can be quickly and conveniently assem
bled and dismantled, and may also be readily
maintained in most effective operating condition,
unduly hard objects to pass through the crushing
chamber is because the crushing surfaces will 15 While the various improved features are espe
cially applicable to gyratory crushers of the high
move directly away from each other, and the seal
type, they may be more generally appli
ring 63 coacting with the apron e2 will not be
cable to other types of crushing machines in
affected if the impact of material discharged
volving similar operating difficulties.
from the crushing chamber it should bend or
displace the frame liner 54. Since the apron 52
is attached to and moves vertically with the con
cave and its support, the lower end of this apron
It should be understood that it is not desired
20. to limit this invention to the exact details of
construction or to the precise mode of operation,
-.erein shown and described, for various modi?
will always remain the same distance above the
cations within the scope of the claims may occur
discharge Zone, and will not be subjected to impact
to persons skilled in the art.
from the ?nal product.
I claim:
It will be apparent that the thrust block i4, [4’
1. In a crusher, a frame having an upright
will normally permit slight lateral movement of
bore, an upstanding column having a lower ta
the head i 9 relative to the upper extremity of the
pered portion extending into said bore, a split
column 5 without subjecting the parts to undue
interposed between said tapered column
stresses, by virtue of the fact that the thrust block 30
portion and said bore, a member secured to said
is freely laterally movable relative to the central
frame and spanning the lower end of said bore,
shaft. If, however, the wear on the block [4, l4’ .
a series of removable shims interposed between
becomes excessive, additional shims 45 may be
applied so as to elevate the head I l su?iciently to
said member and ‘the bottom of said sleeve for
provide necessary clearance between the head if 35 varying the elevation of the latter, means coact
ing with said member for pulling said column
and member 31 and to cause the sealing bands 4|
to properly cooperate with adjacent structure.
into said sleeve to clamp the column to said
If the wear between the thrust block and the top
eccentric rotatable about said column,
of the column 5 is sufficient to undesirably lower
a crushing head coacting with said eccentric and
the supporting surface at the top of the column, 40 having the major portion of its weight carried by
shims 65 may be placed beneath the lower end
the top of said column independently of the ec
of the column 5 and the plate 28 so as to elevate
centric, and means for rotating said eccentric to
the column sufficiently to restore the supporting
gyrate said head relative to said column.
surface at the upper end thereof to its original
2. In a crusher, a frame having a ?xed up
position. In case the column 6 becomes loose,
standing column provided with an upwardly con
more shims 21 may be inserted beneath the
cave ?xed surface at its top, an eccentric ro
clamping sleeve 25 so as to again tighten the
tatable about said column, means for revolving
column {5 within the hub l. The adjustments
said eccentric, a crushing head gyratable by and
afforded by the shims 2?, 155 are therefore rela
freely rotatable about said eccentric and having
tively advantageous and desirable for several
an integral portion spanning said column top
reasons, and these adjustments can obviously be
and provided with a plane surface facing said
conveniently effected so as to restore the crusher
concave surface, a thrust element loosely inter
to its desired operating condition.
From the foregoing detailed description it will
be apparent that my present invention provides
various improvements in the construction and
operation of gyratory crushers, whereby the e?i
ciency of such structures is enhanced to a maxi
mum and the life thereof is also augmented. The
posed between said surfaces and being laterally
movable relative thereto for supporting the major
portion of the weight of said head on said column
independently of said eccentric, and means for
varying the elevation of one of said surfaces to
effect vertical adjustment of said head relative
to said column.
improved support for the central column shaft 60
3. In a crusher, a frame having a fixed up
6 permits this shaft to be rigidly attached to its
standing column provided with an upwardly con
supporting frame 5 and. to be maintained in rigid
cave ?xed surface at its top, an eccentric rotat
condition, or removed, as desired. The use of the
able about said column, means for revolving said
clamping bushing or sleeve 25, 25’ protects the
eccentric, a crushing head gyratable by and freely
bore in the frame hub ‘l, and facilitates repair by
rotatable about said eccentric and having an
making it unnecessary to replace large and com
integral portion spanning said column top and
plex parts such as a frame 5. The improved as
provided with a plane surface facing said con
semblage of elements associated with the thrust
cave surface, a thrust element loosely interposed
block l4, Ill’ including the adjusting shims 45,
between said surfaces and being laterally slidable
is also extremely important since this assemblage
thereon for supporting the major portion of the
permits the head I I to be adjusted to compensate
weight of said head on said column independ
for wear and to insure proper sealing of the ec
ently of said eccentric, means for varying the
centric con?ning space. The improved tilt
elevation of one of said surfaces to effect vertical
permitting assemblage for the concave l 5 is like
adjustment of said head relative to said column,
wise of importance since it insures rapid and
and means for detachably clamping said column
to said frame to maintain the top surface thereof
at a predetermined elevation.
4. In a crusher, a frame having an upright
bore bounded by an annular surface, an upstand
ing column having a lower portion bounded by
an annular surface positioned centrally Within
said bore, at least one of said surfaces being ta
pered, a split sleeve interposed between said sur
faces, a member secured to said frame and span
of said sleeve for varying the elevation of the
latter, means coacting with said member for
pulling said column into said sleeve to clamp the
column to said frame, an eccentric rotatable
column, a crushing head ooacting With
said eccentric and having the major portion of
its weight carried by the top of said column inde
pendently of the eccentric, and means for rotat
ing said eccentric to gyrate said head relative to
ning the bottom of said bore, removable shims 10 said column,
interposed between said member and the bottom
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