US1183808A - Crushing-machine. - Google Patents

Description

mamas.

e. H. FRASER.

CRUSHING MACHINE. I APPLICATION FILED DEC. 21' 1905. RENEWED DECHM. 19 14 Patented May16,1916.

4 SHEETS-SHEET 1 L Pl I) 4 v v I I I l 'lIII/IIIIIIIIIII INVENTOR:

WITNESSES:

G. H. FRASER.

- (BUSHING MACHINE.

APPLICATIQN'HLED DEC. 21. 1905. RENEWED DEC/14, 1914.

1 9 1 83,8@@ a Patented May 16, 1916.

4 SHEETS-SHEET 3- FIG. 3

I INVENTOR:

WITNESSES: Y i v ZIOIIZJ S,

G. H. FRASER. V

i cnusumc MACHINE. APPLICA'HQR FILED DEC. 21. 1905- RENEWEDDBC. 14. 19M.

1,183,808. v Patented May16,191 6.

" 4 SHEETS-SHEET 4.

' FIG. 4. Y

INVENTOR- WITNESSES:

UNITED STATES PATENT OFFICE.-

GEORGE HOLT FRASER, OF NEW YORK, N. Y.

CRUSHING-MACHINE.

Specification of Letters Patent.

Application filed December ,21, 1905, Serial No. 292:779. Renewed December 14, 1914. Serial No. 877,267.

T all w lt 0m it may concern Be it known that I, GEORGE Hour FRA- snn, a citizen of the United States, re-

, siding in the borough of-Brooklyn, county of Kings, city and State ofNewYork, have invented certain new and. useful Improvements in Crushing-Machines, of which the following is a specification.

This invention relates to mach1nery for crushing, grinding or pulverlzing materials,

. and aims to provide various improvements therein.-

In carrylng out thls invention, a revolving ring or die having an internal crushing face, and preferably revolving in a substan- I tiallyvertical plane, is used with one or.

more internal crushing rolls bearing against the inner face of the die, improved means for carrying the rolls and supporting their.

bearings are provided, an improved casing is provided for inclosing the crushing parts,

and various other improvements are provided which will be hereinafter more fully set forth or shown.

In the accompanying drawings WhlCh illustrate the preferred form of my invention as applied to a pulverizing mill, Figure 1 is an elevation of the left hand side of the machine partly in vertical section in the planes of the lines l1. in Fig. 4, omitting the pulley; Fig. 2 is a front elevation thereof partly in section through the feed hopper in the planes of the lines 2-2 in Figs-1 and 3, and partly broken out; Fig. 3 is a side elevation of the left hand side of the machine partly in vertical section in the planes of the lines 33 in Fig. 2, and partly broken away; and Fig. 4 is a rear elevation partly in vertical mid-section on the line 4.'-4= in Fig. 3'.

I will now describe the preferred adapta-- tion of my invention as appliedto a pulverizer of the type shown in the drawings.

Referring to the drawings, A is the main frame Or casing, B are the side covers, C is the top bearing frame, D are its bearing caps, E are the lower bearing frames, FR.

are the bearingcaps on their right hand ends, and FL are the bearing caps on their left hand ends, G is the feed hopper.

GR is the right hand feed spout and GL is the left hand feed spout,eand GC are the covers giving access to same.

H is the feed deflector, HR is the right hand feed chute and HL is the left hand fee-d chute.

1 are the side hole plates, J are the cheek p1eces, K are the end hole plates, L are the spring washers, M are the spring heads, N

r are the spring seats, 0 are the bolt locks, P

are the dust guards, Q are the bearing links, R- is the top rocker, S are the lower rockers, T are the nut locks, Uare the thrust collars, V are the driving pulleys, W are the upper oil covers, X are the lower oil covers, Y are the hopper wear plates, Z is the feed gate,

ZS is the stop or shut-off gate, ZT is itslever,a11d ZL is its lock.

The crushing ring is lettered a, the-rolls b, their shafts c, the pressure springs d, the pressure screws 6, and the discharge outlet f.

The casing preferably incloses and suprolls press outwardly against the inner face of the ring, and this pnessure is adjusted by the screws '0 acting against the springs 61 which react against the outerv wall ofthe casing. The pressure of the springs is transmitted bythe bearing frames tojthe shafts of the rolls. The ring and rolls are revolved by driving .one of the revolving parts, its

motion being transmitted to the others by traction.

The pulleys V on the top shaft are preferably used to drive these parts.

One or more of the rolls-are movable radially of the ring, and the ring is preferably movable relatively to the' rolls, so that the parts are free to yield to vibration or to adapt themselves to the work between their crushing faces.

Rock enters the inlet 9 in the hopper G and flows past the feed gate Z on. to the hopper plates Y in the bifurcated legs of the hopper, by which it is delivered to the spouts at each side of the mill, down which it falls to the chutes, which direct it through the side covers and deliver it onto the deflector H inside of the ring and above the feed roll. The

. deflector deflects the rock on to the inner face of the ring, and it is carried on this face past the rolls, by which it is crushed against the ring. The ring runs freely between the cheek pieces J, which are spaced apart from Patented May 16, 191a.v

ports the ring and rolls. Each roll has a its side faces to prevent large pieces of rock from falling off the ring, and to permit the crushed rock to escape between them and the ring and into the outer casing down which The ring. and rolls it falls. to the outlet;-

are driven in such-direction that the de- :scending side of the ring will be adjacent -.to the feed, and at suchspeedthat the .centrifugal force will besufficient toholdthe.

rock onthe inner face of the ring untilit is erably each can move axially to a limited extent to adapt themselves to the material bein g o n The casing A is preferably a single annular casting of trough-shaped cross-section,

with an opening in one orboth sides large enoughv to pass thering into'its grinding chamber, and is provided with suitable-end holes communicating with this chamber and witha base h through .whichthe outlet f passes The side, openings of the annular casing are preferably oval or of greater ,hei'ght than width, so that the strength of the casing near its horizontal center is increased. This does not, prevent entrance or removal of the ring, however, as the ring then moved orrolled out of the casing. ()pcanberotatedon a vertical axis until it passes the s de. edges of the opening, and

posite each roll the casing has a bearing portion for the correspondlng bearing frame or its spring, and intermediate of the rolls it has provisions for supportingthe'roll bearings and their frames from points exterior of the ring. The cross-section of the casing is shown as" U-shaped, and it is provided with internal flanges sopposite the crushingrolls, and is protected from wear by wear plates 2' carried in the pockets formed by these flanges. These flanges reinforce the ca-sing and are interrupted opposite the hand holes to give free passage at such points. I The casing is widened where the flanges are interrupted to give additional strength, and exteriorly it is provided with a reinforcing rib t, and with pivotal provisions 7' for the guiding links IQ, and k for the top rocker R and Z for the lower rockers S. The inner edge of'the casing is formed with notches m for receiving ears n on the cheek pieces to insure proper positioning thereof, see Fig. 3.

The side openings in the casing are closed by the covers B, which are each 'a single piece formed with slots for the shafts, and

hand holes for access and holes for the feed chutes. The covers 13 are machined'on their inner faces to fit against the machined strips on the outerfaces ofthe casing and on their outer facesaround the slots and holes, and each cover is bolted against one side of the casing so i that the roll shafts project through the slots.

The cheek pieces J are preferably rings having fiat faces opposite the sides of the revolving ring when the latter is flat-sided, or tapering faces when the sides of the ring are tapered, and each cheek piece is fastened.to theadjacent cover with. a machinefitted 'joint,.and has an ear or ears n for fitting. in thecorresponding, notch m in the casing. Eachcheek, piece has an inner res cess ov for clearing the feed chute, the ears and recesses being shown as duplicated, so that a cheek piece can be used on either side of the mill. The lower part of each cheek piece is recessed at p (Fig. l) to permit ground material to escape to the outlet. The check pieces are fastened on the covers, and then the two are applied tothe casing by slipping the covers over the ends of the shafts. I v a The. dust guards Pare bored to fit the shafts, and-faced to make a tight joint against the cover, and are shaped-to cover a the shaft slot in all movements of the shaft. 1 They are supported by the bearing frame by projecting lugs it which fit-slidingly into the rabbeted lugs e on the frame,- and are held therein by the adjacent face of the lugs wbearing cap, which engage lugs w on the guards P. The coiled spring reacting againstthe bearing and guard and held between these lugs, keeps the guard against the cover as shown, so that the guard does not participate in axial movements of the frame, but does participate in all radial movements of the bearing. I The hopper has a poke-hole y behind its inlet for cleaning out. The feed gate has a notched end to insure a central flowof feed to the spouts, and is adjusted in its slideway by a screw which is separably connected to it as shown. Theshut-off gate has a sliding support in its movements toward and from the closed position in its slideway, being carried on its inner end by beveled tracks, and on its outer end by the swinging handle ZT, which is pivoted above it, and is locked in its closed and openpositions by the gravity lock ZL which hooks against the hopper or casing. This swinging facilitates opening and closing movements ofthe gate, and reduces friction I v r As shown in Figs. 2 and 3, the upper Wear plates Y lie in the hopper legs andprotect their lower sides. The hopper overhangs the casing and supports the spouts which are clamped to, its under face. The lower end of each spout fits over and closesthe-corresponding hand hole on the adjacent cover. Each cover B is formed with an integral flange 2 for supporting the deflector H (Fig. 2) which rests with its ends on these flanges between the spouts, and has a central projection a preventing material from jumping across from one spout to the other, and'causing material coming down either spout to flow on to thering near the center of its face. The chutes rest with their inner ends on the deflector and abut against shoulders I) thereon, while their outer ends project loosely into the spouts andrest therein. thus protecting these from wear. The deflector may be reversed when one side is worn.

.Thechutes may be; renewed through the "spouts, and the hopperplates may'bere- "moved through the hand hole in the hopper when 1t is necessary to substitute others.

The bearings areshown asswmging nonrotative carriers or members movable toward and from each other and preferably pivotally connected to and positioned or supported and guided by links Q which are movable swinging. members preferably pivotally connected to the ears j attheir outer ends, and to the respective bearing frames at their inner ends. 'lhe'bearings at the opposite ends of the shafts are preferably rigidly united'by a U-shapedframe. shown as a single casting extending around the outside of the casing. and supported near its outer end movably from the'casing, and

having a spring pocket or provision for the pressure spring. The top frame 0 is preferably positioned or guided by the rocker R,

"which is a movable or swinging member preferably pivoted to the ear Z, and guides the frame and prevents its oscillation, as it is pressed upwardly by suitable means as its spring d. This frame isformed with oil and grease wells above eachbearing, which are closed by the gravity doors V as shown. Its bearing caps D are planed bearing caps rabbeted into the frame to insure alineinent, the frame and caps having lugs andflanges 'at their inner faces opposite the dust guards and their springs. for supporting them. At

*1 their outer ends this frame and its caps proj'ect'out close to the pulleys. andhav'e' planed ends against which antifriction washers,

' which are between the hubs of the pulleys and the frame, limitendwise movement of the-shaft in the bearings. The hubs of the pulleys are constructed thus as thrust hubs,

and these hubs and-the ends of the shaft are 'drilledthrough and locked by a cross bolt to prevent shifting of the pulleys, see Fig. 4:. The lower frames E are non-rotative swinging carriers or members movable toward'and from each other and pivotally positioned or supportednear their outer ends by the rockers S, which are shown as divergently inclined thrust or COIHPIGSSIOIX memhers. Their caps FR and FL are provided with integral grease and oil wells which are closed by the covers X as shown. The links Q for lower frames E are shown as reversely inclined tension members. These frames and caps are constructed like the upper ones on theirinner ends, but on their outer ends they are shorter and receive the thrust of the thrust collars U, which are fixed to the 'aiuloutwzu'd movements of the rolls.

lower shafts by through bolts, ,as above described, and are provided with antifriction washers between their inner faces andthe bearings. These washers'ar'e countersunk on their outerffaces, so' that theyfslightly overhang thebeveled inner'edge of the collars. The nut locks T. are pivoted to fall "by "gravity or under light spring pressure over the nuts," and the heads of the bolts are pre vented from turning by lugs on the various frames and caps as shown. a

The swinging, guiding, and supporting .of the top frame, is done from one side, and

thatof the lower frames is done from oppo" site sides, of its bearing, and the relatio nof the supporting links and rockers 1s proportioned to suit the requirements of work. As

shown. the angularity of the lower rockers is suitable to utilizing part of the weight of the frame for drawing the roll outwardly against the inner face of the ring, thus increasing the effectiveness of this Weight as a crushing force whether or not it "is used in conjunction with the spring pressure.

This swin 'in uidance of the bea'rin frames involves some oscillation of the spring pocket, but the movement of the rolls is too slight to make this material. To provide for suchoscillation, the spring seat N is formed with a semi-spherical concavity,

and a corresponding protuberance on the casing is provided, as shown.

The spring is shown as secured in 'a cage, so that its motion is, limited to approximately two inches expansion or contraction,

thus correspondingly limiting the inward The square head of the spring bolt fits in a squaredsocket in the spring head M, and the nut of'this bolt can be turnedjin the round socket in the s rin'g seat N until it strikes-a shoulder on the'holt, which will be made to suit the initial compression desired.

Then the nutcan be locked, and the length of the bolt will limit the outward expansion of the spring. The inward compression of the spring can be limitedby the abutting of r the spring head and spring seat. The spring washer fits loosely in the spring head and receives the end of the pressure screw. To

For the lower frames it may bethe lock 0 ismoved in and held until the screw has been turned, and is then released, whereupon it engages the head of the screw and locks it. In case the top screw is re,- moved, undue descent of the top frame is prevented by the spring bolt 9, which is of such length that the spring washer will strike it before the top shaft has fallen too low. The holes for the lock 0 in the end of the spring pocket, permit dirt to sift out of the lower pockets if it accumulates therein. I

The bearing frames are provided with stops or rollers 1", removably connected to their hearing ends, which work against'the side covers with a slight clearance and permit the hearings to oscillate slightly with the end thrust of the shafts, but arrest this oscillation at the predetermined limit. This enables the hearings to be practically stationary relatively to the shafts, while permitting a limited end play for the rolls. The

' rolls are held on the shafts by shoulders and collars and bolts in any ordinary or suitable way. In operation, the bearings will swing in and out slightly, and will oscillate slightly to adapt themselves to the exigencies of the work and avoid rigidity, If wearing parts are to be renewed, the bearing caps will be unbolted from their frames, and the latter will be swung outwardly until they are out of the way of the side covers. Then one or both side covers will be removed, and the rolls and shafts withdrawn. The ring will be turned edgewise until it will pass out through the side of the casing, whereupon it will be rolled out and'another can be replaced. The cheek pieces will be removed if necessary and new ones attached to the covers. To reassemble the mill, the shafts and rolls will be replaced within the ring after the latter has been moved into the casing, the covers will be applied, the bearing frames swung back into position,

the caps replaced, the parts connected up, and operatlon may be resumed. In moving the bearing frames outwardly, it is desirable to disconnect the links and oscillate the cient elasticity to meet all possible require:

ments, and that this, to a largeextent, is due to theswinging support for the nonrotative members, carrying the rolls. To accomplish this swinging support various forms of specific construction may be em- I ployed, the form shown and described being regarded merely a specific example to which, however, the scope of this invention is not restricted. It will also be understood that the constructions and arrangements shown and described are given as examples illustrating the preferred form of this invention, but that the invention may be invention.

\Vhat I claim is 1. In a crushing machine having a revolving ring and a crushing roll acting against its inner face, the combination with acasing inclosing the ring and roll and havingan opening large enough to pass said ring, of movable bearings for the roll shaft at opposite sides of the casing, a rigid frame uniting said bearings and extending around the exterior of the casing, and a swinging guide for said frame.

2. In a crushing machine having a revolving ring and a crushing roll acting against its inner face, the combination with a casing inclosing the ring and roll and having an opening large enough to pass said ring, of movable bearings for the roll. shaft at opposite sides of the casing, a rigid frame uniting said bearings and extending around the exterior of thecasing, means movably supporting said frame near its bearings, and a guide for the outer end of said frame.

3. In a. crushing machine having'a revolving ring and a crushing roll acting against its inner face, the combination with a casing inclosing the ring and roll and having an opening large enough to pass said ring, of movable bearings for the roll shaft at opposite sides of the casing, a rigid frame umting sa1d bearings and extending around the exterior of the casing, and a swinging guide for said frame near its bearings, and a support for the outer part of said frame.

I. In a crushing machine having a re volving ring and a. crushing roll acting against its inner face, the combination with a casing inclosing the ring and roll and having an opening large enough to pass sa1d ring, of movable bearings for the roll shaft at opposite sides of the casing, a rigid frame uniting said bearings and extending around the exterior of the casing, means movably'guiding said frame near its bearings, and a swinging guide for the outer part of said frame.

5. In combination, an annular crushing die revolving in a verticalplane and having an internal crushing face, a movable and rotatable crushingroll within, eccentric to and disposed near the upper part of, said die and having a crushing face reciprocal to that of the latter, means for revolving one of said parts, a non-rotative movable p'ivotally mounted member .carrying said roll, and means pressing said roll upwardly volving ring and a crushing roll therein, in

said casing for connecting said bearings to-f gether.

7. A casing for crushing machinery having a side opening for receiving a cheek piece, in combination with a cheek piece smaller than, entering, and inclosed within, said opening, said piece and casing having reciprocal recesses and projections for pcsitioning said parts, and means supporting said piecefrom the outside of said caslng.

8. For crushing machinery, a bearing frame having bearing portions at its extremities, guiding provisions adjacent thereto, pivotal provisions, a U-shaped body between said bearing portions, and a spring pocket in said body having an aperturethrough its-Wall for receiving a lock.

9. 'A bearing frame for crushing machinery having bearing portions near its extremities, stop provision adjace'nt thereto, a U-shaped body connectlng said portions, and pivotalprovisions on sald body remote from said portions, said frame movable both axially. and radially of said bearing portions, a revolving crushing membercarried by said frame, and means movably, supporting said frame.

10. In combination, an annular crush ng die revolving in a vertical plane and havlng an internal crushing face, three movable rotatable crushing rolls Within and eccentric to said die, said rolls movable toward and from one another and each having a crushing face reciprocal to that of said die, means for revolving one of said parts, non-rotative movable pivotally mounted carriers for sa d rolls respectively, and means pressing said rolls apart to generate a crushlng pressure toward the inner face of said die.

11. In combination, an annular crushing die revolving'in a vertical plane and having an internal crushing face,a plurality of 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, non-rotative and swinging carriers for said rolls respectively, pivotally mounted above said rolls and means holdlng said rolls toward said die to resist a crushing pressure from the inner face 'of the latter. j

12. A rocker for.crusl1ing mhchinery having an open-sided semi-cylindrical portion for embracing and making a pivotal connec-' tion with a pivotal provision near one of its extremities, and having pivotal provisions near its other extremity in combination with a movable bearing member connected tolast mentioned provislons.

13. In combination, an annular crushing die revolving in a vertical plane andhavmg an internal crushing face, a plurality of movable and rotatable crushing rolls within and eccentric to said die each having a crushing face reciprocal to that of the latter, means for revolvmg one of said parts, and non-ro- -tative relatively movable swinging carriers for said rolls respectively, each pivotally mounted above and outwardly of its roll,

whereby each-carrier tends to swing its roll outwardly.

14. In combination, an annular crushing dlQI'GVOlVlIlg in a vertical plane and having an internal crushing face, a plurality of movable and rotatable crushing rolls within and eccentric to said die, disposed on approximately the same horizontal plane, and each having a crushing face reciprocal to that of the die, means for revolving one of said parts, non-rotative movable carriers 'for said rolls respectively, and outwardly diverging tension members pivotally mounted above and outwardly of said rolls and carrying said carriers. 15. In combination, an annular crushing die'revolvingin a vertical plane and having an internal crushing face, a movable and ro tatable crushing roll within and eccent ic to said die and having a crushing face recipro';

cal to that of the latter, means for revol ing,

one of said parts, a non-rotative and able carrier for said roll, and an incli ed thrust member beneath and acting against said carrier to force said .roll outwardly, and pivotally mounted inwardly of and below ,its point of engagement with said carrier.

16. lni combinatiom'an annular revolving crushing; die Having an internal crushing face, a plurality of movable and rotatable crushing rolls within and eccentric to said die, each having a crushing face reciprocal to that of the latter, means for revolving one of said parts, non-rotative and relativelymovable carriers @for said rolls respectively, and reversely inclined pivotally mounted divergi g thrust members acting against said carri rs respectively to force said rolls apart.

17, A revolving crushing ring and a crushing roll therein, in combination with a casingfinclosing said parts, thertop bearing frame herein set forth for said roll, and the roclier herein set forth for said frame consisting of a member having spaced pivotal provisions at its ends for. connecting said casing and frame movably together and havceiving said casing and frame respectively.

, ing recesses between said provisions'for re- 18. In combination, an annular crushing die revolving in an approximately vertical plane and having an,internalcrushing face,

a movable and rotatable crushing ,roll

within, eccentric.to,"and disposed near the upper part of, saiddie, and having a peripheral crushing-face reciprocal to the internal face of the latter, means for revolving one of said parts, a non-rotative movable member on which said roll is rotatably-mounted,

means'pressing said roll upwardly toward said die to resist a crushing pressure from the inner face of the latter, a frame or casing for said parts, and an additional member removably connected to said frame or casing and on which said non-rotative mem- 4 her is movably mounted.

19. In combination, an annular crushing eccentric to, and disposed near theupper part of, said die, and having a peripheral crushing facereciprocal to the internal face of the latter, means for revolving one of said parts, non-rotative means on which said roll is rotatably mounted, means holding said roll upwardly toward the inner face of said die to resist a crushing pressure from the latter, a frame or casing for said parts, and

an additional member pivotally connected to said frame or casing and on which said nonrotative member is mounted.- .a

20. In combination, an annular crushingdie revolving in an approximately vertical plane and having an internal crushing face,

a movable and rotatable crushing roll within,

eccentric.- to, and disposed near the upper part of, said die, and havmg a peripheral crushing face reciprocal to the inner face of the latter, means for revolving oneof said I parts, non-rotative swinging means on which said roll is rotatably mounted, means holding said roll upwardly and toward the inner face of said die to resist a crushing pressure therefrom, a frame or casing for said parts, and an additional member pivotally connected to said frame or casing andon which said swinging member is pivotally mounted. 21. In combination, an annular crushing die revolving in an approximately vertical movable toward and from each other within, eccentric to, and each having a peripheral crushingface reciprocal to the internal face of, said die, means for revolving one of said parts, non-rotative movable members on which said rolls are rotatably mounted re-' spectively, means acting to press said rolls away from one another to resist a crushing pressure from the inner face of sald die, a vframe or caslng for sald parts, and means nisasos three or more rotatable crushing rolls with-v 4 in and eccentric of said die and each having a peripheral crushing face reciprocal to the inner face of the latter, means for revolving one of said parts, non-rotative car-- riers on which said rolls are rotatably mounted respectively, means for holding said rolls awayv from one another to resist a crushing pressurefrom the inner face of said die, a frame or casing for said parts,

and means movably mounted on said frame or, casing and on which said non-rotative members are mounted. 23. In combination, an annular crushing die revolving in an approximately vertical plane and having an lnternal crushing face, two or-more rotatable crushing rolls movripheralcrushing face reciprocal to the in- ,abletoward and from each other within and eccentrlc ofsaid die and each having a peternal face. of the latter, means for revolving one of-said parts, swinging means on which said rolls are rotatably mounted respectively, a frame or casing for said parts,-,

'two or more rotatable crushing rolls movable toward and from each other and as a each having a peripheral crushing face reciprocal to the inner face of the latter, means for revolving one of said parts, non-rotative movable means on which-said rolls are rotatably mounted respectively, a frame. or cas ng for said parts, means for holding said rolls outwardly away from one another to resist a crushing pressure from the inner 25. In combination, an annular-crushing d e revolving in an approximately vertical plane and having an internal crushing face, two or more rotatable crushing rolls movable toward and from each other and as a face of said die, and supporting means on which said non-rotative means are movably mounted on said frame or casing. plane and having an integral crushing face, a plurality of rotatable crushing rolls roup,* w1th1n and eccentric of said die, an each having a peripheralcrushing face reciprocal to the inner face of the latter, means for re 'volving one of said parts, non-rotative movable means on which said rolls are. rotatably mounted respectively, a frame or casing for sand parts, means for holding said rolls outwardly'away from one another to resist a crushing pressure from the inner face of said die, and supporting means on which said non-rotative means are movably mounted pivotally connected to said frame or casing.

26. In combination, an annular crushing Within and eccentric of said die and each means on which sald .non-rotatlve carriers die revolving in an approximately vertical plane and having an internal crushing face, two or more rotatable crushing rolls within and eccentric of said die and each having a peripheral crushing face reciprocal to the inner face of the latter, means for revolving one of said parts, non-rotative movable carriers on which sald rolls are rotatably mounted respectively,means for pressmg said carriers outwardly away from one another to generatea crushing pressure toward-the inner face of said die, a frame or casing for said parts, and hinged means on which-said carriers are movably' mounted, l5 27. In combination, an annular crushing connecting the latter to said frame or casing.

die revolvingin an approximately vertical plane and having an internal crushing face,

three rotatable crushing rolls movable to-.

ward and from each other and as a group,

having a peripheral crushing face reciprocal to. the inner face of the latter, means for re; volving one of said parts, non-rotative movable carriers on which said rolls are rotata". bly mounted respectively, means acting on said carriers to hold said rolls outwardly away from one another to resist a-crushing pressurefrom the lnner face of said die, a frame or casing for said parts, and hinged are movably' mounted.

" 28. In combination, an annular crushing i ing an opening at the sides-of said roll, an

inner face thereof, means for revolving one ."die revolving'in an approximately vertical plane and havmg an internal crushing face,

a movable and rotatable crushing roll within, eccentricofland disposed near the up per part of, said die, and having a peripheral' crushing face reciprocal to the inner face of thelatter, means for revolving one of said parts, a casing for said parts havupwardly movable non-rotative carrier on which said roll is rotatably mounted, means acting on said carrier to' press said roll up-v wardly to resist acrushing pressure from the inner face of said die, and an upwardly movable plate covering said openingand slidingly mounted on said earner.-

29. In combination, an annular crushing die revolving in an approximately vertical plane and havingan internal crushing face,

a movable and rotatable crushing roll within' and eccentric to said die and having a peripheral crushing face reciprocal to the of said parts, a casing for said parts having an opening at the side of said roll, a nonrotative carrier at the side of said casing opposite said opening, movable approximately radially of said die, on which said roll is rotatably mounted, a spring acting on said carrier to press said roll. toward the inner face of said ring to resist a crushing pressure therefrom, and a spring-pressed ing or carrier at the side of said casing op- 'posite said opening movable approximately radially of said die and on which said .roll

- is rotatably mounted, means acting on said bearing or carrier to press said roll out- .ward1y toward the inner face of said die to resist a crushing pressure therefrom, means 'within said die for directing material to be crushed onto the' inner face-thereof in advance of said roll, and means carried by said removable side communicating with said directing means for affording a conduit or passage for material from without said casr ing to within said ring.

31. In combination, anannular crushing die revolving in an approximately vertical plane and having an'internal' crushing face, two or more rotatable crushing rolls movable toward and. from each other, within and eccentric to said die and each having aperipheral crushing face reciprocal to the inner face thereof, means for revolving one of said parts, a. casing for said parts comprising a removable side, non-rotative carriers on which said rolls are rotatively mounted respectively, a spring or springs for pressing said rolls outwardly .away from one another to resist a crushing pressure from the inner face of'said die, and means carried on said removable side comprising a conduit or passage communicating with the interior of said die intermediate of said rolls for directing material to be crushed onto the inner face of said die.

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

' GEORGE HOLT FRASER.

Witnesses:

' THOMAS F. WALLACE,

FRED WHITE.

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