USRE15179E - Bock-crttsheb - Google Patents

Description

C. 0. MICHAELSEN.

ROCK CRUSHER. APPLICATION mzp OCT. 28. 1920.

4 SHEETS-SHEET 2- Rflifi Al g- 16, 192 1.

INVENTOR ATTORNEY C. 0; MICHAELSEN.

ROCK CRUSHER.

APPLICATION FILED 0U. 28. 1920.

Reissued Aug. 16, 192 1. 1 5, 1 79.

\ 4 SHEETS-SHEET 3- //v Vf/VTOR Charles 0. .Mz'cfiaels'era A TTORIVE Y UNITED STATES,

PATENT OFFICE}.

MACHINERY COMPANY, A

CORPORATION OF NEVADA.

aoox-onusrmn.

Specification of Reissued Letters Patent. Reissued Aug. 16,1921.

Original No. 1,068,889, dated June 3, 1913, Serial No. 145,726, filed February 1,1913. Application for reissue filed October 28, 1920. Serial No. 420,232.

To all whom it may concern Be it known that I, CHARLES 0. MICHAEL- SEN, a citizen of the United States, and a resident of Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and" useful Improve ments in Rock-Crusheraof which the fol lowing is a specification.

My invention relates to machines for breaking; or crushing oreand the like, and it is the object thereof to provide in a machine of this kind means for actuating a pair of crushing-jaws so as to produce an oscillating movement'of the jaws in which certain portions thereof will remain at a substantially constant distance from each other while other portions of the jaws will move toward and away from each other, the

I jaws also having a certain sliding or rubchine being removed,'Fig. 2 is a longitudinal vertical sectional view of the machine, the section beingon' the plane of the line w-m of Fig. 4, Fig; 3 'is a horizontal sec tional view on the plane of the line yy of a Fig. -1, Fig.4 is a transverse vertical section on the plane of the line 2-2 of Fig. 2, Fig. 5 is a detail section of the'swinging beam and jaw-plate on the plane "of the line 0-0 of Fig. 2,"and Fig. 6 is a detail plan view ofone" of the connecting links for the rock shown: v

Ting-beam and swinging-beam. c

In the construction shown I employ a frame'consi'sting" of the side-pieces 1,"-each ofwhich-has at theends thereof. the laterally extendingflanges 2 and 3. The-ends of said flan es are machined smooth and laced togeter, and the'tw'o sides'of the frameare secured together transverse bolts. 4w passing through flanges, as

"The main or'd'riv'ing shaft 5 extends trans; versely through the frame near the rearward end thereof, being journaledin boxes 6 dis,

posed in suitable 'guideways in the frame. I

Said boxes have slotted flanges extending over the sides of the frame; bolts 7 being passed through the' flanges, as shown; Adjusting-screws 8 are passed through the end of the frame, and li'ning-plates9 are disposed in the guideways so as to approximately fill the longitudinal space therein not occupied by the boxes. By changing the liningplates 9 and manipulating-the screws 8, the positions of the boxes andthe 'shaft'may be varied longitudinally of the frame for the purpose hereinafter set forth. On the ends of the shaf t 5 are carried fly-wheels 10, one or both of which may be used as a pu'lley or pulleys and connected by belt with'a suitable'source of power. On'the central portion of the shaft is an eccentric 11, and around the eccentric is disposed the ececntric-slide 12, a roller bearing 13 being placed between the eccentric and the slide, as shown. The forward end of the eccentric-slide is forked and passes slidably over a block 14 which is pivotally mounted on a transverse rod 15. The upper and lower sides of the eccentric-slide have transverse rectangular channels made therein and in said channels are disposed the facing-blocks 16 of which the sides remote from'the" slide have transverse cylindro-segmental 'concavities therein. In said concavities are disposed the rocking-blocks 17 'offwhich both the-upper and lower faces are convex and of cylindro-seg mental form. On the outer faces of the blocks 17 are fitted the rocking slides 18 of which the outer surfaces are flat and fit slidably against the facing-plates 19 secured on the adjacent-faces of the horizontalp'or tion of the levers 20 and 21. Said levers are connected to the shafts 22 and-'23,'-respec tively; The end portions of said shafts are journaled in bushings 291 which pass through the sides of the P frame, the bushingshaving flanges at their outer ends which are"secured by screwsto the frame; as shown.

The portions of the facing-plateswbetween the levers and rocking-slides are wedgeshaped, the plates have slotted flanges overhanging 'the s'idejs of the levers, *and suitable screws are passed through the" slots in the flanges -to= secure the plates to the levers.

by means of the nuts 28,

On the front sides of 21 arefiat-surfaces on which aresecured the flat facing-plates; 29. Said plates are-slidably engaged: by theiflat sides of the-rocking-slides 30, the opposite sides'of the slides compression of ;the springs: may. be varied,

being concave, and fitting upon the convert surfaces of the blocks 31 which arelset in transverse rectangular channels in the rearward side of rocking-beam 32.

The. beam .32 is mounted on atransverse shaft. 33 which passes through the central part' of thebeam. and is journaled in bush ings-24 in the frame, similarly to the-shafts 22 and. 23. Qn'the front face ofth'e rock ing-beam the transversely serrated jawplate 34 is secured bymeans of bolts 35 passing through the plate and the beam; A similar jaw-plate 36 is secured by bolts 37 to theswinging-beam 38' Which is hung on a transverse, shaft 39. Avswinging beam 38 is pivoted near its upper endand on'an axis parallel to the axis of the rockingbeam.

Said shaft is jou-rnaled in bearing-boxes 40' which are held in: suitable guideways in the frame, the: boxes having slotted flanges which fit against the outer sides of the frame and are secured thereto by screws passing through the slots. The boxes 40 may be adjusted longitudinally of the guideways by means of screws 41 which pass through the ends of-the frame, as shown in Fig. 3,-lining plates 42 being employed to fill in the spaces between the boxes and the ends of the guideways;

The inner sides of the frame adj acentzto the rockingrbeam and swingingsb'eaan are covered by plates 43 which are preferably of hard steel and smooth-surfaced. Through the lower ends of the beams are passed shafts 44 and- 45 WhicheX-tend through arouate slots in the plates 43, the slots being I concentric to the respective shafts 33. and

3.9. The ends of the shafts 44 and 45. are connected to each other by links each consisting of two parts 46 and- 47 having ,overlappin serrated faces, and bolts 48-passing throng slots therein to hold the serrated faces together. The length of the links may be varied by securing the overlapping parts in different relations. to each other;

Upon the upper part of the frame above the rochingbeam and swinging-beam is dis posed a hopper consisting of t aside-plates 49 and transverse plates-5Q. and 51. The

plate 50 is fixedly c nnected with the sideplates, and plate 51 is conneeted there to bolts which ass through longitudinal slots"thereinf'so' Eat the position of the plate may "be var-ita longitudinally. The

prov de ered over by plates 54.

Behind the hopper a coverrplate "55 is placed across the top :of the: frame. so} as to-inclose the aQtuati-ng mechanism: and protect it from dust and the 1lJIB As a further means of preventing dust and; abrasive material .fromreachingthe bearings and working. surfaces-of (the actuating mechanism I provideychannels v.56 in the S d f; the. rocking beam,;--swinging-beam and jajvwplates adjacent to the. plates 48 ,on the innel? Sides of the frame. Theupper ends-of the channels areclosed so as to preventmaterial from the hopper passing down into them, and the lower ends-are open so that any material that may work back from the crushing throat, between the sides ofthe jaws and theplates 43, may, upon reaching the channels, pass down through them and -befdisharged at the. lower ends thereof. I 1

I In theoperation of themachinethe materials tobe crushed are fed into the hopper and-pass therefrom bygravity into :the throat or crushing-space between the jawplates carried onthe adjacent faces of the rocking-beam and swinging-beam; Rotation-inf themain shaft 5.causes a vertical oscillating. and longitudinal: reciprocating of the eccentric-slide, and also a slight tilting movement thereof resultingfrom its engagement-with the pivotedblock 14. The vertical movements of the eccentric-slide are communicated to the levers 20 and 21, the tilting and 1011 itudinal, reciprocating movements of the slide being permitted'by the Oscillationor rocking of th-eparts 17 and 18,. and the slidin "movement of the latter uponthe facing-p ates 19. The oscilbearing blocks .31.. The movements of the lower end of the rocking-beam 32 are com In-unicated by the connecting links between the shafts 44 and 45 to thelower end of the swinging-beam 38.

Thew dth of the throat. between-the upper ends: of the. jaw-platesmay be varied by adjusting the position of the shaft 39 longitudinally of the frame, a similar adjustvment-beingmade of the: hopper end-plate The Width of the throat between-the lower ends of the jaw plates may be varied by varying the length of the connecting links between the shafts 44 and 45. The same adjustments will serve to compensate wear of the faces of the jawplates. The movements imparted to the levers 32 and 38 by the actuating mechanism are such that t e width of the lower end of the throat between the aw-plates is practically constant, while the width of the throat at the upper part thereof varies considerably, the upper parts of the jaws moving alternately toward and away from each other. There is also a certain vertical movement of the jaws relative to each other, the lower end of the jaw 36 movin slightly upward while the adjacent end 0 the jaw 34 is moving downwardly, and the latter then moving upward while the other is moving downwardly. This movement results in a rubbing or scouring of the materials between the jaws in the lower part of the throat.

By varying the position of the main shaft longitudinally of the frame the amount of movement imparted to the levers 20 and 21 may be varied, the throw of the levers being increased as the main shaft is moved toward the fulcrum-shafts 22 and 23, and decreased as the distance from the fulcrum-shafts to the main-shaft is increased.

I claim:

1. In a machine of the character described, a rocking beam, a swinging beam, jaw plates on the adjacent faces of the beams, means for directing the material into the space between the jaw plates, and means comprising a shaft for the rocking beam pivotally sup porting the same near its central part, a shaft for the swinging beam pivotally supporting the same near its upper end, a link, a shaft fixed to the lower end of each beam and pivotally connecting each beam with one end of the link and positioning the link axially of said shafts in spaced relation to the beam ends, said last named means to rovide, upon the movement of one of the Beams, an oscillatory movement of both beams with a simultaneous vertical movement of the opposing faces of the beams relatively to each other, the simultaneous oscillation of the beams causing said opposing faces at the upper ends of the beams to move alternately toward and away from each other while the lower end portions of said opposing faces remain at a substantially constant distance from each other.

2. In a machine of the class described, a horizontal driving-shaft, an eccentric carried thereon, a tilting body disposed around the eccentric, two levers having horizontal portions extending respectively above and below the tilting body. the levers being fulcrumed on axes near a horizontal plane passing through the axis of the driving-shaft, sliding and rocking bearing-members disposed between the adjacent faces of the levers and the tilting body, a rocking beam pivoted at its central part on an axis disposed near the lever fulcrums, the levers having plane-surfaced parts adjacent to the rocking-beam above and below the axis thereof, said lever parts being approximately parallel to the said portions of the rockingbeam, and rocking and sliding bearing-members disposed between said lever parts and said portions of the rocking beam.

3. In a machine of the class described, a driving shaft, an eccentric carried by the shaft, a tilting body disposed around the eccentric, two levers having horizontal portions extending respectively above and below the tilting body, the levers being fulcrumed on axes near a horizontal plane passing through the axis of the driving-shaft, sliding and rocking bearing-members disposed between the adjacent faces of the levers and the tilting body, a rocking-beam pivoted at its central part on an axis disposed near the lever fulcrums, rocking and sliding bearing-members, disposed between the levers and the adjacent parts of the rocking-beam above and below the axis thereof, and means for varying the position of the driving shaft toward and away from the lever fulcrums to change the throw of the levers caused by the eccentric and tilting body.

4. In a machine of the class described a frame, beams mounted to oscillate between the sides of the frame, jaw-members on the adjacent faces of the beams, lining-plates secured on the inner sides of the frame and slidably engaged by the lateral edges of the jaw-members, said plates inclosing the sides of a vertical throat between the jaw-members, and means forming channels in the edges of the jaw-members adjacent to the lining-plates and extending parallel to the adjacent faces of the j aw-members.

In testimony whereof I have hereunto subscribed my name in the presence of two witnesses.

CHARLES O. MICHAELSEN. Witnesses:

CHARLES P. BROWN, Cnmsrnm Lunwro.

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