US1451154A - Machine for grinding and crushing - Google Patents

Description

Apr. 10, 1923.

G. H. FRASER MACHINE FOR GRINDING AND CRUSHING ori inal Filed Mar. 51, 19;? 5 sheets-sheet 1 w .H HH. H l

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Apr. 10, 1923.

' G. H. FRASER MACHINE FOR GRINDING AND CRUSHING Original Filed Mar. 31, '1917 is-sheets-sheeu 2 WITNESSES:

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Apr. 10, 1923.

G. H. FRASER MACHINE FOR GRINDING AND CRUSHING Original F1. led Mar.

5 sheets-sheet 5 INVENTOR Patented Apr. 10, 1923, I i

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GEORGE nv FRASER, or BROOKLYN, ivniv szoiaiz. a l i MACHINE FOR GRINDING Ann oRUsHrNG. I

Application filed March 31, 1917, Serial No. 158,828. Renewed August 9, 1922. Serial No. 580,803.

T allwhomz't may concern: parts of the machine, all of which will be Be it known that LGEoRcn H. Fnasnn, a more fullyset forth with reference to the 55 citizen of the United States, residing in the accompanying drawings, in which,'

borough of Brooklyn, county of Kings, city Fig. 1 is a side elevation, partly in vertical and State of New York, have invented ceraxial mid-section, of a crusher. constructed tain new and useful Improvements in Maaccording to the preferred form of my inchines for Grinding and Crushing, being a vention; I, Y refiling of my application Serial No. 802,071, Fig. 2 is a plan viewthereo'f partly in filed Nov. 20, 1913, of which the following horizontal axial mid-section; f t

is a specification. 1 lg. 3 is a front elevation thereof partly This invention relates to machinery for in section through the axis of the crusher crushing, grinding or pulverizing materials, springs, the door being open to show the in- 65 and aims to provide certainimprovements terior; and v therein. Fig. 4: is a rear elevation thereof partly The invention relates more particularly to in section through the axis of the rear rock crushers of the type having a plurality bearing. y f of crushing rolls within an annular die in Referring to the drawings,, let AIindi- 70 which the crushing is effected between the cate a frame, B the ring or die, C the rolls, periphery of the rolls and the inner face of D their shafts or axles-E the roll-( carriers the die. Examples of this type of crusher or bearings, S the crushing springs, and d are well known in which the die revolves the adjusting screw. I a and is held in position yieldingly by the In the type of machine shown'the ring 75 rolls which support it, or rigidly by a shaft revolves at sufficient speed to causethe masupported in bearings and connectedto the terial to be crushed to be held on the con:

die by a head or spider, the rolls being cave inner crushing face of the ring by cenpressed outwardly by springs to resist a trifugal force, and the rolls are rotatively crushing pressure from the inner face of the held and are pressed against this face by 80 die. and being movable radially thereof to the crushing springs to crush the material yield to adapt themselves to the work. between them. The crushed material is When the die is supported by the rolls, forced over the edges of the ring and falls means are generally provided for driving through the outlet a in the base. When the one of the rolls, which drives the die and ring is of the driven type here shown. it is the other rolls by traction. When the die carried by a cup-shaped head or spider G is the driven member, all of the rolls are mounted on a shaft H carried from supports 35 driven by traction; V on the base A, and driven in any suitable My present invention'aims to provide an manner, as'by a pulley J connected by a improved crusher or pulverizer especially friction clutch K to drive a counter-shaft L applicable to the type in which the die is which drives the shaft! H through spur the driven member, but includes various feagears M. r i i tures of improvement which can be em- Power applied to revolve the ring causes ployed in other types of crushers. the rolls to revolve by traction, and the mov- To this end in carrying out my present able roll carriers'permit the rolls to move invention in its preferred form, I provide inwardly to adapt themselves to the crushan improved arrangement of die and rolls, ing operation. Material is fed on to the 45 improved means for carrying the rolls, imdescending side of the ring in front of one proved means for guiding them, improved of the lower rolls through a feed hopper N means for transmitting all or part of the and chute O, and revolves with the ring 10 crushing thrust from one roll to another, until crushed sufficiently'to flow over its improved means for holding the die, imsides. The ring and rolls are enclosed in a 50 proved means for controlling the size of crushing chamber inthe casing P.

material discharged from the crusher, and According to'one'featur'eof this invention various details of improvement in the con- I provide for supporting the driven die movstruction and arrangement of the several ably and yieldingl ygso that it is cushioned parts being so constructed and connected that the bearing yoke or frame Q can swing upwardly or laterally, but will be caused to move in parallelism with the axes of the rolls by the action of the guiding frame T. The yoke Q has widely separated bearings U for the shaft H, one near the head G andthe other near the rear endof the shaft, and an intermediate connection Z) rigidly joining these bearings. From the bearings the yoke has horizontally extending arms a and e which are fulcrumed to the upwardly projeeting arms f of the yoke T, so that the yoke Q can oscillate vertically. The yoke T has a tubular barrel or body 9 rigidly connecting its arms 7 and fulcrumed by a shaft II, to the standards or supports V carried on the frame or base A, so that its arms can swing horizontally to permit horizontal movement of the shaft H. Tlhe yoke Q is preferably constructed with a pocket or casingz'enclosing the gears M and forming part of its rear arm e, by which it is connected to the pivotal shaft R at one side and to the pulley shaftL at the other side vof the bearings. The arm 0 is preferably duplicated on the yoke, so that at one side it may serve as one bearing for the shaft L and on the other side for pivotally connecting the yoke to the rocker T, the construction beingvsuch that the rocker may be at either side and the countershaft at the other side as desired.

In effect, the yoke Q is a rigid casting ca 1'- rying bearings for the ring shaft, the

countershaft and rocker connection, and movably to permit the movement in any direction at right angles to the axis of the die, so that the latter may move but will be preserved in parallelism with the rolls.

In the type of machine in which the die is not supported by the rolls, I prefer to support the die by this yoke yieldingly in suspension against the action of cushioning springs or other suitable provisions. As shown, this is accomplished by poising the yoke on a plurality of springs carried by the supports V and reacting against-the bearing ends of the yoke Q; in various directions, preferably in opposition to the directions of action of the several rolls. Preferably each bearingis vertically supported yieldingly by a spring XV seated in a pocket in the support, reacting upwardly against the bearing to carry its weight, which spring is yield inglyresisted by a :RGVQISQ spring Xibeueath the yoke reacting downwardly on a bolt engaging the yoke and serving, through the medium of an adjustable nut 70, to draw the two springs together until the vertical position desired for the shaft H has been at tained, whereupon the yoke is held yieldingly in this position against rising or falling except to momentarily cushion a shock.

Horizontal positioning of the yoke is effected preferably by laterally acting springs Y carried by the supports V at each side of the yoke bearing, and reacting against the latter laterally and preferably in opposition. to the action of the corresponding crushing roll to resist horizontal swing of the yoke, the springs Y being confined by bolts Z and adjustable nuts on to limit their expansion beyond the pointat which the yoke is held-in the desired lateral position. i

' The springs are duplicated at eachend of the yoke so that the latter is poised and cushioned in its normal position, but may move or vibrate sufficiently to-avoid breakage incident to shocks and crushing, and may be adjusted vertically to vary the position of the ring relatively to the rolls, or to throw more or less of the weight of the ring on to the rolls when it is desired that these shall partially support the ring. 7 This vertical adj-usta'bility of the ring may be increased to any range desired, and utilized as a crushing force or to take up wear.

According to another feature of improvement the crushing rolls are movably mounted, preferably .to swing on axes inwardly of the innercrushing face of the ring and parallel with the axis thereof, and two of the rolls are mounted in substantially the same horizontal plane on an axis or axes intermediate of their axes of rotation, so that their carriers incline outwardly from a fixed point of support as seen in Fig. 3, and a third roll is movably mounted above them, and thrust provisions intermediate of the rolls are provided which react against the two horizontal rolls with a pressure that countervailing against each, and the reaction of the third roll is transmitted to the roll tends to separate the lower rolls, and this tendency is resisted by the inner face of the ring, more or less of the weight of which is carried by the upper roll, transmit ted through the lower rolls, and resisted by the intermediate point of'pivotal support of the'lat'ter. The divergent swinging carriers of the lower rolls, and the divergently acting intermediate thrust members between these and the upper roll, serve to resista crushing pressure from the inner face of the ring when the ring is supported independently of the rolls, or to resist this and the weight of the ring when the ring is so adjusted or supported that its weight is carried by the rolls, either partially as in the construction shown, or wholly as when the cushioning springs are adjusted out of engagement with it.

This may be accomplished -in various ways, the two supporting rolls being suitably mounted with their axes in approximately the same horizontal plane, and'so that one orboth shall be held outwardly to resist a crushing pressure from the inner face of the ring and transmit it to the other roll, and both shall be capable of wholly or partially supporting the ring when this'is vertically movable, and of positioning it horizontally when it ishorizontally movable. 1

I prefer to pivotally or swingingly mount two rolls so that their axes are in approximately the same horizontal place below the normal axis of the'ring, and their carriers are movable to swing them approximately horizontally radially of the ring, and to provide a yielding thrust member intermediate of the carriers for movably holding the rolls apart and toward the inner face of the ring, and to provide a third roll movably mounted and engaging the inner face of the ring near the upper part thereof, and held thereagainst by a thrust member acting expansively against the two lower rolls to hold them outwardly under the weight of the ring. As shown, all of the rolls C are rotatably mounted on swinging carriers E pivotally carried by a support Z which is as shown in Fig. 3, removably fixed or mounted on the frame A, by bolts 1 so that on removing one of these bolts the support can be moved pivotally on the other boltand has tubular or horizontal projections it having pivotal provisions for shafts or pins 0 which project through the interior of the ring and pivotally support the carriers E on each side of the rolls. One pin 0 is preferably used for the lower carriers of both the lower rolls, and disposed centrally intermediate thereof so that these carriers incline upwardly and outwardly from this pin and diverge approximately equally, whereby the weight of the rolls and carriers is partially available as acrushing' element, and the carriers tend to resist unequal horizontal dis placement, as their angularity would cause a roll to move upwardly as well as inwardly, and thus tend to liftvthe top, roll and raise the ring in case of horizontal movement of the latter. This arrangement of carriers aids in positioning the parts in operation, and gives the maximum utilization-of their weight and action for crushingpurposes.

Thevcarriers of the upper roll are preferably pivoted approximately horizontally radially of the'roll. The carriers at each side of the rolls are preferably freely pivoted and removably mounted so that one on either side may be detached for removing a roll, and as shown each roll. is 'rotatably mounted on its carriers preferably bybeing slipped over an axle or shaft 1) which is fixed orxpinnedito the carriers to connect them together through the roll, so that they will move uniformly, which axle carries a bearing lining 3? partially surrounding it and held against rotation by a key or pin g on the lining engaginga seat or keyway 1' on the axle to hold the lining at the pressure side thereof. The roll has a tubular hub or center fitting. over the lining 79 between the carriers E, by which it is held in place axially, and leakage of lubricant at the ends of this hub is prevented by spring-pressed cupshaped washers s embracing-the end of the hub, revolving therewith, and pressed against the adjacent face of the carrier by springs t or otherwise to make a closure at this point to keep lubricant in and dust out.

Each axle D is preferably providedwith a longitudinal oil duct u communicating through the key or open projection g on the lining with the interior of the roll for supplying lubricant thereto from a cup 1) outside of the casing,and with an outlet duct 10 for escape of lubricant'at the end of the a provide means at each side of the rolls so that they may move in parallelism and to provide for equalizing pressure at each side, so that theiriaction may be uniform at each side of the die. Preferably these holding means are intermediate of the carriers and sive, adjustable, and movable both axially and radially of the die, and are connected together'through the die to position and control them, and are collapsible to adjustv them or remove-the rolls from the die.

As shown, these means comprise a crushing spring S opposite and pivotallyconnected to each carrier, extending approxi mately radially inwardly and pivotally connected to a movable member intermediate of'and receiving the reaction of the several springs for transmitting the pressure ofeachto the other or others. Preferably each oar- .act outwardly against them, and areexpanrier is formed with a semi-spherical socket'm receiving the semispherical head of a spring carrier 'y which is loosely pivoted'to it, and the spring S is disposedbetween this carrier and an adjustable spring nut? screwed on a bolt (1', which has a semi-spherical head pivotally mounted in a semi-spherical socket in the movable ca'rrier b7 and loosely con-' nected thereto, the" parts being constructed withabutting faces or shoulders on the principle ofa knuckle joint which engage to prevent them from swinging past the head centeriin-one direction, but permi.ttheirrelative movement in the other direction for ad justment or collapsing. The spring S acts expansively, and its seat and :nut are con the thrust-members. To prevent turning, the

carriers 5 preferably :have forked projections 6 straddling the lower extension p of the support Z, and having clearance enough to permit all necessary movements of the spring carriers. Thethrust bar or screw d projects through a clearance hole (1 in the bodily remove the internal parts from they cover so that it can adapt itself axially of the die to equalize the different-springs, and this hole is closed by a dust guard f sliding on the screw :and pressed outwardly by a spring 9 surrounding the latter, .the cover 72/ being provided with this hole for the screw, and with a hole 2" opposite each roll axle.

' The cover A is preferably hinged to the support Z, and this support is preferably an annular :member on the periphery of which the sheet metal cover y" of the casing P is clamped. The support Z has a tubular flange Z against which the cover h closes,

and through which the rolls and carriersv may be removed or access to the interior may be had. The support Z is preferably fixed to the base A by its bolts I '(see'Fig. 3) either of which can be removed so that it can be swung outwardly on the other as a pivot to ring,;and' it is slidingly mounted thereon so thatv by removing both bolts] it can be slid outwardly for this purpose, on freeing one or both of its pivotal bolts 1.

The feed hopper N is mounted :on the support Z, and the chute O passes through the front wall oi the support to the interior of the ring to direct feed thereon.

My invention provides for mounting check pieces at each side of an exteriorly supported or positively driven ring to limit size or mesh of the material'discharged therefrom. This is preferably accomplished I by supporting these check pieces through the interior of the ring and mounting them preferably relatively yieldingly and collectively mov-ably therein, so that they can yield to free material caught between them, and can move to adapt themselves to the movements of the ring. I prefer to employ an annular check piece A at each side of the ring, and to support these by a slidingly mounted bar B carried by the support Z projecting, through the ring and carrying each check piece. As shown, three bars 13 are used which traverse ears in the check pieces which are spaced apart on the bars in any suitable manner, as by apiece of pipe is, and yieldingly held thereagainst by springs m so that :the pieces can yield or can move to adapt themselves to conditions. In this manner the size of material escaping from the ring can be controlled, and the check pieces and their supports will be clear of the spokes of the revolving head Gr, and for some work the necessity for using an outside screen with a crusher will be avoided.

In operation, when the ring is driven the polls will revolve therewith by traction. illaterial flowing from the hopper and chute on to the descending inner face of the ring will be crushed between this and the periph-- cry of the roll, and forced oif the sides of the ring on to the check pieces, between which and the ring it will escape to the discharge if fine enough to pass between them. It too coarse to escape, the material will return to the ring for further crushing" The ring will yield on its cushion carriers to adapt itsel i to the crushing shocks, and the rolls will yield against the crushing springs, which will resist their motion through reacting toward the other rolls. of the ring will be more or less thrown on to the rolls, so that these wholly or partially support it by adjusting its supporting springs as desired, and in such case this weight will be supported by the rolls, and the tendency of the ringto descend resisted by the divergently acting provisions intermediate ot the rolls, which will transmit the inward pressure of each to the other with. aforce that is countervailing in two or more directions. Radial adjustment of the springs S to take up wear or increase pressure will be made with the spring nuts 2, or axial adjustment to vary pressure or to collapse the thrust members will be made with the screw (Z, which when these members are adjusted to any angularity inwardly of the dead center will act as a ffioati'ng compression member intermediate of them, movable axially to equalize theiraction at each side of the rolls, and when the parts are adjusted outwardly until the springs are at angles to the axis, the knuckle joint connections will prevent axial displacementvof the thrust .members and ensure their maintaining The weight proper working positions for the maximum of thrust effect for which they are adjusted.

Itwill be seen that the rolls are movable passively as a group, and individually, and that their expansive forces are equalizedintermediate not their carriers and confined within the ring, so that all forcesiincident to the operation of these parts maybe =utilized for crushing the material to be treated, and none will be lost by transmission to fixed parts. 1

While I have described and shown my improvements as applied to a machine in which the ring is the driven member, it will be understood that the invention is not limited to this type of machine, nor to the par-' ticular details of construction, arrangement and combination of parts set forth and shown as constituting its preferred form, since my improvements can be used in whole or in partin connection with such types of machines or according to such modifications or adaptations as circumstances or the judgment of those skilled in the art may dictate, without departing from the spirit of the invention.

The support Z has rearward bifurcated inclined feet C extending beyond the cen ter of gravity of the weight it carries and meeting similar forwardly extending feet D on the front support V, which together serve as the upper part of the outlet chute and to which the casing fastened. The bolts I traverse the feet C opposite the center of the die and are so disposed that the support can be swung on either bolt to open the mill.

lVhat I claim is 1. In combination, an annular externally driven crushing die having an internal crushing face, a movable and rotatable crushing roll within and eccentric of said die and having a peripheral criishing' face reciprocal to the inner face of said die, means for revolving said die, and a sup port on which said roll is movably and rotatably mounted comprising an outer supporting portion mounted exteriorly of said die and having a portion extending past one side of said die affording an aperture at the side of said roll through which the latter can be passed and having projecting in wardly from and sustained by said outer portion a rigid inner roll supporting por-' tion within and extending through said die and movably and rotatably sustaining said roll within said die opposite said recess.

2. In combination, an annular crushing die having an internal crushing face, a movable and rotatable crushing roll within and eccentric to said die and having acrushing face reciprocal to that of the latter, means for revolving one of said parts, a movable carrier for said roll comprising separable parts at each side thereof, and an axle carried by said parts and on which said roll is rotatably mounted, and a frame for said parts comprising a fixed supporting portion inwardly of said die and intermediate of the I separable parts of said carrier and on which the latter is movably mounted, and having a recess opposite said roll through which the latter can be removed.

3. In combination, an annular crushing die having an internal crushing face, a movable and rotatable crushing roll withinand eccentric to said die and having a crushing face reciprocal 'to that of the latter, means for revolving one of said parts, a swinging carrier on which said roll is rotatablymounted, and a frame for said parts comprising a supporting portion disposed at one side of said die and affording a recess at the opposite side of said die and having a fixed pivotal provision extending through said die and past said roll supporting and pivotally engaging said carrier. at each side thereof. i

l. In combination, an annular externally driven crushing die having an internal crushing face, a rotatable crushing roll within and eccentric of said die "and 'havinga peripheral crushing face reciprocal to the inner face of said die, means for revolving said die, and a non-rotative support on which said roll is rotatably mounted having an outer portion mounted exteriorly of said die and extending past one side of said die and having a stationary portion extending through said die and having a stationary roll sustaining portion at the other side, of said die from which said roll is rotatably sustained at that side of said die.'

In combination, an annular crushing die having an internal crushing face, two

orinore movable and rotatable crushing rolls within and eccentric to said die and each having a crushing face reciprocal to that of the latter, means for revolving one of said parts, movable carriers on whichsaid rolls are rotatably mounted respectively, thrust members on each side of said rolls intermediate of said carriers for holding said rolls outwardly away from one another to resist a crushing pressure from the inner face of said die, and a movable part passing through said die and intermediate of said thrust members for adjusting them.

6. In combination, an annular externally driven crushing die having an internal crushing face, a movable and rotatable crushing roll within and eccentric of said die and having a peripheral crushing face reciprocal to the inner face of said'die, means around and revolving past said roll for revolving'said die, non-rotative movable means on which said roll is rotatably mounted,a support on which said non-rotative' means are mov' ably mounted exteriorlyof said die and havlng a portion extending past one side thereof, andpressing means disposed at the opposite side of said die and opposite and acting against said non-'rotat-ive means to press said roll outwardly toward the inner face of said die to resist a crushing pressure therefrom and sustained through said. die

from said supporting means at the other side thereof.

7. Incombination, an annular externally driven crushing die having an internal crushing face, a movable and rotatable crushing roll within and eccentric of said die andhaving a peripheral crushing face reciprocal to the inner face of said die,

means around and revolving past said roll for revolving said die, non-rotative movable means on which said roll is rotatably mounted, a support on which said non-rotative means are movably mounted exteriorly of said die andvhaving a portion extending past one: side thereof, and pressing means disposed inwardly of said non-rotative means at the other side of said die and opposite and acting against said non-rotative meansfor pressing said roll outwardly toward the inner face of said die to resist a crushing pressure therefrom and connected to said supporting meansthrough said die.

8'. In combination, an annular externally driven crushing die having; an internal crushing face, two rotatable crushing rolls movable toward and from each other within and supported by and eccentric of said die and each having a peripheral crushing face rec'proc-al. to the inner face of said die, means around and revolving past said rolls for revolving said die, movable non-retative carriers on Which said rolls are rotatably mounted arespect-ively, a non-rotative support for said carriers on which said carriers are movably mounted respectively exterior-1y of said die and having a portion extending pastv one side of said die, and pressing means dis posed at the other side ofsaid die opposite and actingon, said non-.rotative means respectively to press said rolls outwardly away from oneanother to resist a crushing pressure from the inner face of said die and sustained through the interior of said die from saidisup-porting means at the other side of said die.

9. In combination, an annular externally driven crushing die having an internal crushing face, two rotatable crushing rolls movablet-oward and from eachother within and eccentric of said die and each having a, peripheral crushing face reciprocal to the inner face of said die, means around and revolving past, said rolls for revolving said die, movable nonrotative carriers at each sideof said die and on which said rolls are rotatably mounted respectively, a nonrotativesupport for said carriers on which said carriers are movably mounted respectively mounted exteriorly of said dieand having a portion extending past one side of said die, and pressing means disposed at each side of said die opposite and acting'ag-ainst said carriers at the opposite sides of said die respectively to press said rolls outwardly away from one another to resist a crushing pressure'from the inner face of said die and sustained through the interior of said die from said supporting means at one side of said die.

10. In combination, an annular externally driven crushing die having an internal crushing face, three rotatable crushing rolls movable toward and from each other within and eccentric of said die and each having a peripheral crushing face reciprocal to the inner face of said die, means around and revolving past said rolls for revolving said die, movable non-rotative carriers on which said rolls are rotatably mounted respectively, a:

non-rotative support for said carriers on which said carriers are movably mounted respectively mounted exteriorly of said die and having a portlon extending past one sideof said die,and pressing meansdisposed at the other side of said the opposite and acting against sald non-rotatlve carriers respectively to press said rolls outwardly away from one another to resist a crushing pressure from the inner faceof said die and sustained through the interior of said diefrom said supporting means at the other side of said die. 7

11. In combination, an externally driven crushing die having an internal crushing face, a rotatable crushing roll within and eccentric of said die and having a peripheral crushing face reciprocal to the inner face of said die, a support for said roll mounted eX- teriorly of said die and having a portion extending past one side of said die and on which said. roll is rotatably mounted, a revolving head rotatably mounted at the other side of said die and connected to said die for revolving it, and a non-rotary cheek piece opposite and affording an outlet at and mounted at the side of said die remote from said head. i

12. In combination, an externally driven crushing face reciprocal to the innerface of said die, a support'for said roll mounted exteriorly of said die and having a portion extending past one side of said die and on which said roll is rotatably mounted, a revolving head rotatably mounted at the other side of said die and connected to said die for revolving it, and non-rotary cheek pieces opposite and affording outlets from each side of said die supported exteriorly of said die.

13. In combination, an externally driven crushing die havingv an internal crushing face, a rotatable crushing roll Within and eccentric of said die and having a peripheral. crushing face reciprocal to the inner face of said die, a support for said roll mounted exteriorly of said die and on whiehsaid: roll is rotatably mounted, a revolving; head ro pieces opposite and affording outlets at the the interior of said die and supported exteriorly of said die. I

14:. In combination, an annular crushing die revolving in an approximately vertical plane and having an internal crushing face,

a movable and rotatable crushing roll within and eccentric of the upper part of said die and having a peripheral crushing face reciprocal to the inner face of said die, means for revolving one of said parts, nonrotative movable means on which said roll is rotatably mounted, pressing radial means below and radially of the axis of said roll and opposite and acting radially against said non-rotative means to press said roll outwardly toward the inner face of said die to resist a crushing pressure therefrom, and transversely movable means sustaining said pressing means and movable transversely of the direction of stress of the latter.

15. In combination, an annular crushing die revolving in an approximately vertical plane and having an internal crushing face, a movable androtatable crushing roll within and eccentric of the upper part of said die and having a peripheral crushing face reciprocal to the inner face of said die, means for revolving one of said parts, non-rotative movable means on which said roll is rotatably mounted, pressing radial means below and radially of the axis of said roll and opposite and acting radially againstsa-id nonrotative'means to press said roll outwardly toward the inner face of said die to resist a crushing pressure therefrom, and non-rotative movable sustaining means sustaining said pressing means and movable, in the direction of stress of the latter.

16. In combination, an annular crushing die revolving in an approximately'vertical plane and having an internal crushing face, a movable and rotatable crushing roll within and eccentric of the upper part of said die and having a peripheral crushing face reciprocal to the inner face of said die, means for revolving one of said parts, nonrotative movable means on which said roll is rotatably mounted, pivotally mounted holding means disposed radially of and below the axis of said roll and opposite and acting upwardly against said non-rotative means to hold said roll outwardly to resist a crushing pressure from the inner face of said die, and movable sustaining means below and pivotally sustaining said holding means.

17 In combination, an annular crushing die revolving in an approximately vertical plane and having an internal crushing face, a movable and rotatable crushing roll within and eccentric of the upper part of said die and having a peripheral crushingxface reciprocal to the inner face of said die,

means for revolving one of said parts, nonrotativemovable means on which said roll is rotatably mounted, a pressing spring disposed below and radially of the axis of said roll and acting upwardly against said Donrotative meansto hold said rollrtoward the inner face of said die to resista crushing pressure therefrom, and movable sustaining means movable transversely of and sustaining said spring. Y

18. In combination an annular crushing die revolving in an approximately vertical plane and having an internal crushing face, a movable and rotatable crushing roll with,- in and eccentric of the upper part of'said die and having a peripheral crushing face reciprocal .to the inner face of said die,- means for revolving one of said parts, nonrotative movable means onv which said roll is rotatably mounted, a pressing spring dis-, posed below and radially ofthe axis of said roll and acting upwardly against said non-- rotative means to hold said roll toward the inner face of said die to resist a crushing pressure therefrom, and pivoted movable sustaining means for said spring.

. 19. In combinatioman annular crushing die revolving in an approximately vertical plane and having an internal crushing face, a movable and rotatable crushing roll with"- in and eccentric of the upperpart of said die and having a peripheral crushing face reciprocal to the inner face of said die, means for revolving one of said parts, non-rotative movable means on which said roll is rotatably mounted, adjustable 'holdingmeans below and adjustable radially outwardly'rela tivelyto the axis of said roll and opposite and acting against said non-rotative means to hold said "roll outwardly toward-the inner face "of said die to resist a crushing pressure therefrom, and movable sustaining means for said adjustable means.

2O. In combination, an annular crushing] die revolving in an approximately vertical plane and having an internal crushing face, two movable and rotatable crushing rolls, within and eccentric of said die and each having a peripheral crushing face reciprocal to the inner face of said die, means for revolving one'of Said parts, non-rotative movable means on which said rolls are rotatably mounted respectively, movable holding means disposed inwardly of the axes of said rolls respectively and opposite and acting radially outwardly toward said non-rotative means respectively to hold said rolls outwardly away from one another to resist a crushing pressure from the inner face of said die, and movable sustaining means intermediate of and sustained by and sustaining two of said holding means.

21. In combination, an annular crushing die revolving in an approximately vertical ill) two movable and rotatable crushing rolls within and eccentric of said die and each having a peripheral crushing face reciprocal to the inner face of said die, means for re v'olving one of said parts, non-rotative movable means on which said rolls are 'rot'atably mounted respectively, movable holding means disposed inwardly of the-axes of said rolls respectively and opposite andac'tin'gradially outwardly toward said non-rotative means respectively to hold said rolls outwardly away from' one another to resist a crushing pressure from the inner face of said'die, and yieldingly mounted sustaining means intermediate of and yieldingl'y' sustained by and sustaining two of said holdmg means and'transmittingt'hestressof one to another.

'- wardly and outwardly against saidmovable non-rotative means respectively to hold said lower rolls outwardly away from one another to resist a crushing pressure from the inner face of said die, and movable sustaining means inwardly of and receiving the stress of two of sald holding means and transmitting the inward stress of one to an other. g

23. In combination, a revolving annular crushing die having an internal crushinnl face, three rotatable crushing rolls'movable toward and from each other'within and eccentric of said die and each having" aperiphsaid non-rotative means respectively for holding said rollsvoutwardly toward the inner face of said die to resist a crushing pressure therefrom, movable transversely of their direction of stress of retire of said rolls, and transversely movable sustaining means for said holding means respectively movable transversely thereof for moving them, and means for moving said transversely movable means transversely of such direction. v

24. In combination, an annular crushing the having aninternal crushing face. a movable and rotatable crushing roll within and eccentric of said die and having a peripheral crushing face reciprocal to the inner face of said die, means for revolving one of said parts, movable means on which said roll is rotatably mounted, swinging holding means acting on said movable means for holding said roll outwardly toward the inner face of said die to resist a crushing pressure therefrom, movable adjusting means swingingly engaging said holding means and movable transversely of the stress thereof, and interengaging faces on said holding means and one of said parts affording abutting stops for limiting swinging motion of said holdmg means. a

In witness whereof, I' have hereunto signed my name in the presence of two subscribing witnesses.

GEORGE H; FRASER.

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