US1030194A - Crusher. - Google Patents

Description

W. H. LIEBER.

CRUSHER.

APPLIUATION FILED DBO. 29, 1911.

Panented June 18, 1912 arr 1745454 7 g 1 1 1 1 a 1 1 H 1. .w 2 n H 1% 1 m e I, Am. 1--- 1m 1 N a 1 ISy WITNESSES vN-rc:

(Ma/6 15v flza w A T FERN EY- W. H. LIEBER.

GRUSHER.

APPLICATION FILED DEU.29, 1911.

Patented- June 18, 1912;

2 SHEBTSk-SHEET 2.

(Em/6M BY 73m 8 I ATTEJRNEY- a cit-izenof the United States, residing'at' Milwaukee, in the county o f-Milwaukee and j other materials,

- in a co-pending WILLIAM H. IIIEBER, or MILWAUKEE, wI

SCONSIN, ASSIGNOR 'ro A Lrs-cH rMEEs COMPANY, or M LWAUKEE,- wiscons ma CORPORATION OF NEW- JERSEY;

. I I V f cEusH n.

To'all whom it'may concerns j' Be it known that I, WI L AM H.'-LIEBER,

State ofeWisconsin,'hayeainvented a certain L new and useful Improvement in Crushers, of which the following 'is a specification. J This invention relates to improvements in the construction of 'crushers for rock or of the type which a pair of crushing'members-are'rotated about 'dif-. ferent axes, the material being fed along the membersjby the rotation thereof and one i of the members being positively rotated while the other is driven by the material as it becomes lodged between the crushing sur: faces of the two members. In crushers of.

this type as heretofore constructed with a stationary eccentric for causing the n1embers to rotate about dlfierentaxes, it has been found that in orderto obtain the maximum capacity of the machine it was neces- 'sary to rotate the members at a high-rate of speed thereby causing considerable. wearonthe various parts of the machine which were subjected to the material during its passage through the crusher at a'high ve:

locitv.

609,648, filed Feb. 20, 1911.v a

provide a simple and efiicient means wherebythe speedjofprotation of the; crushing members can be reduced without "decreasingv the capacity of the machine, thus eliminate 7 ing the objectionable excessive wear on the forming a part of this specification, in which crushing members: 1' i -The main-unner s aft "of ribs 9' with {an Specification of Letters Patent." Q te t Jun 1 1 Application-filed December 29, 1911.

Serial no; 868,407.

like reference characters designate the same or similar parts in the various -views..

Figure ,1 is a. central vertical section through a crusher and itsinclosing casing.

Fig; 2 is a transverse fragmentary section of the; crusher shownj'in'.v Fig. 1, the section being takenfialong'fthe lineII-JI looking in the direction of-the arrow.- Fig. 3 is a central vertical section'through a crusher and its inclosing casing, having means for vary ing the'eccentricity members. Fig; 4 a I transverse fragmentary 'section through the crusher disclosed I ing stationary bearing for both of the 2 of the crusher, see Figs.- lf and; is'unounted vertically and concentrically.- within a sleeve 3 formed in one with 't-hea stationary crusher frame 19. The convexcrushing member or disk -20 is provided withfthe'wearing liner 7 andis secured to the-Lupper end oft-he shaft 2 in any suitable manner, as by. keys. Thev I s liner 7 is locked against rotation relative to The present invention is an improvement l on the device disclosed herein and claimed application Serial Number' the eonvex disk 20. The-drivin pulley 14 is fiikcd to'the lower end-of the inner shaft 2 by any suitable fastening means, such as A keys, and is housed in the lower portion of An object of the present invention 1s to' the crusher frame 19. The concave crushmg member or disk 8 is connected by means flange 22 which is formed in one with the upper end ,of the outer shaft or sleeve 6, and extends toward its axis of rotationTm'I-he convex member or, disk 20 projects intojthe concave member 8, the crushing chamber 1 two members.

being formed between the Bolts 21 are securedto the ribs Qand-project upwardly: through 1 the flanged periphbetween the crushing inwardly projecting cry of the concave'disk 8. A series of liners cave disk 8 means of .nuts which screw upon the -o'uter=. ends ofthe bolts'21. The

nects the feed hopperll with the crushing chamber 1 formed between-the crushing or shims 23 embracethe bolts 21 and are clamped ,between theupper end surfaces of the ribs 9 and lower surfaces of the con- 45 tionary inclosing housing for the crusher members. The crushing members are so positioned that a discharge opening exists between the members adjacent the ribs 9, the extent of this opening being adjustable by varying the number of shims 23.

An eccentric bearing or sleeve 5 has its interior surface bored so as to fit the external cylindrical surface of the fixed hearing or sleeve 3. The outer cylindrical surface of theeccentric sleeve 5 is turned to fit the internal bore of the sleeve6. As dis= closed in Fig. 2, the outer and inner cylindrical surfaces ofthe eccentric sleeve 5 are generated about" different parallel axes. The pulley 4 is formed-in one with the cocentric sleeve 5, the combined sleeve and pulley being supported upon an upper horizontal surface of the'st ationary frame 19. The pulley 4 is provided with a housing 12 which is secured to the stationary frame 19: andhas passages forflpermit-ting belt connection-to the exterior of the crusher casing. -'The bearing plate-l3 has an upper surface which coacts with thelewer surface of the flange 22,- and a lower surface which "coacts with the upper surface (if-"the fixed bearing or stationary sleeve 3. .Itshould be noted that sufficient clearance' has been allowed between the upper-surfaces of they eccentric sleeve 5 and the lower surfaces of the sleeve 6 and bearing plate 13 to permit the entire weight of the crushing members to rest upon the upper end of the stationary t sleeve 3, rather than upon the eccentric sleeve 5. v I

with funnel. shaped walls 16 which are connected to the frame 19 by means of a series of ribs 18.

Discharge openings 17 are formed at the lower ends of the wall 16 and frame 19. Liners 15 are supported in a groove at the upper end of the wall 16 and in turn support. the conical cap l0 through which the inlethopper. 11 is formed. The wall 16, 1 .iers 15 and cap 10 combined forma sta- In the crusher as disclosed in Fig. 3 the eneralconstruction of the frame 19, the inclosing casings and the crushing members, is identical with that above described. The

I eccentric bearing or sleeve 25 which has the pulley 4 formed integral therewith, is provided with an outer cylindrical surface which coacts with the inner bore of the sleeve 6. The inner bore of the eccentric 25 coacts with the outer cylindrical surface of a second eccentric sleeve 24, the lower surface of the eccentric sleeve 25 resting upon a 'plane surface formed on the base of the eccentric sleeve 24. The, inner bore of the eccentric sleeve 24 coacts with the outer cylindrical surface of the stationary sleeve 3. Theeccentric sleeve 24 has, a lower plane surface which rests upon an upper surface of the frame 19. With this construction the combined .eccentricsleeves 24, 25 and pulley 4 are supported directly upon the stationary frame 19. The lower p0rtion of the eccentric sleeve 25 isprovlded with a series of radial grooves or slots 28, see Figs. 3 and 4. The portion of the eccen-' tric sleeve 24 upon which the combined sleeve 25 and pulley 4 are supported, is provided. with a single radial slot in which a key 27 is adapted tobe inserted. By re moving the key 27 and rotating the outer eccentric sleeve 25 upon the inner eccentric sleeve. 24, the eccentricity of the outer cylindrical surface of the sleeve 25 can be varied. lVit-h the key 27 inserted in-a pair of adjacent slots as shown in Figs. 3 and 4, the inner and outer sleeves 24 and 25 are locked together so that rotation of the pulley 4 will cause the inner sleeve 24 to rotate about the sleeve 3. The inclosing housing 12 'of normally closed by a cover plate 26, through which the key 27 may be removed and inserted so that any desirable variation of the eccentricity of the outer cylindrical surface of the sleeve 25 can be conveniently made. In the form of crusher disclosed in Fig. 5, the stationary bearing or sleeve 32 which is formed in, one with the frame 19, has its outer cylindrical surface generated on" an axis which is eccentric to the. axis of the inner borethereof. The inner bore of the eccentric bearing or sleeve 33 coacts with the outer cylindrical surface of the stationary' sleeve 32 and has an outer, cylindrical surface which is formed eccentric to its inner. bore. The outer cylindrical surface ofthe sleeve 33 coacts with the inner bore of the outer shaft or sleeve 6 which sleeve carries-the con-cave crushing member 8. The sleeve 33 has alowerqplan'e surface which coacts with. an upperplane surface of the frame 19 The bearing plate 13 rests directly'upon'an upper plane surface which is common to. the upper ends of both sleeves 32, 33. is provided .with a series-:of radial slots 34. The key 35 is adapted tocoact in a radial through which oil be forced to the 11; The mam inner crusher. shaft 2 is rotated by means of belt power applied'to the pulley 14 at the lower end of the shaft.

the pulley 4,is provided with an opening,

The lower portion of the sleeve 33 slot formed in the frame 19 and serves as a' "12c disk 20, is provided with crushing chamber 1 through the inlet hopper As the material deposited in the chamber 1' drops upon the rotating liner 7 of the disk 20, it is fed-or-passed outwardly by the action of centrifugal force and'becom'es wedged between the conical surfaces of the liner 7 and the concave. crushing? disk 8. This wedging of the material between the crushmg member's causes the rotation of the con% vex crushing-head tobe transmitted to the concave crushing disk 8, causingthe twol crushing members to'rotate in the'same di-x rection and at substantially equal speeds.

'S1nce the concave crushing disk 8 is mounted upon the outer cylindrical eccentric surface oft-he sleeve 5, th'edisk 8 will have a Y dilferent'axis of rotation than that' of theconvex crushing member. The rotation of th e' crushing disk 8".upon a diiferentaxis than that upon which the 'convex crushing member'rotates, will cause each portion of the crushing surface ofone of the members to approach and recede from an adjacent portion of. the other member, :once inweach revolution providing the axes oftthe members are held stationary. The eccentric outer shaft or'sle'eve .5 is rotated however:

by means of a .belt coacting with the pulley.

14 in a direction opposite to the direction of rotation of the crushing members. This 5 rotation of the eccentric sleeve 5 causes the passingthrough the thickest'portion of the rot-ates in a direction opposite to the direc-' eccentric sleeve 5. As the eccentric sleeve tion of rotatiorf of the crushing members,

the axis of the vertical bearing surfaceof the concave disk 8 moves in a circular path about-the axis of the convex crushing member, thus gyrating the disk 8 and causing the vertical planes marking the positions of least and greater distances between the memem upon the rate of rotation of the eccen-.

bers to move in circular paths. The rate of travel of these imaginary planes is dependtric sleeve 5. This shifting of these planes causes each portion of one of the members to approach an adjacent portion ofthe other member more than once in each revolution.

. By thus cai sing'each 'portion of the crushother member more than once in each revomg surfacesof one member to approach and recede from corresponding portions of. the

lution of the members, it will be seen that .the speed at which the crushing members must be rotated can be greatly reduced while the same crushing effect and ca-. pacity of machine that is produced byl iolding the eccentric sleeve 5 stationary 1s obbetween the-ribs 9 ,ontothe rotation of same.

tained. This reduction in. the necessary speed of rotation will greatly reduce the velocity at which the material is discharged liners 15,.thereby reducing'the wear on the machine ele;

essary tolsrotate the sleeve-5 Pin a direction opposite tot-the directiona of' rotatibnof the" high -rate of rotation of the. sleeve '5 is necessary in order to produce'lthe same effect that isobtained by rotatingthe sleeve in the oppositedirection, Asthe material becomes crushed by the apprgach ;.of the crushing surfaces, which however'are at'no time in contact-with each Othel',-ittoward the peripheries of the ,disks by centri'fugal force. The formation 'ofthe crushing surfaces is such as to aid in-feed-ing the .material along the crushing'member's by the Upon being d scharged from the crushing chamber 1, the crushed material is discharged through thepassages 17. y

from the crusher. .4

'70 ments. ltshould be-noted that fit is not neca v that of the crushing members ls'that a very,

is gradually fed n With the use of a double eccentric as .jdis'closed in'F-igs. 3, and 5', the extent -of eccentricity or the radlus of gyration -be-- 1 tween the crushing members can be easily and effectively varied by shiftingone ,of the eccentric sleeves upon the other. In the construction disclosed in ,Fig. '3, the combined eccentric sleeves 24, 25, are adapted to be rotated as in the construction disclosed in Fig. 1 the locking together of the two sleeves being accomplished by means of the key 27. In the construction disclosed in Fig. ,5, the eccentric sleeve 33 is, rotatable upon the sleeve 32 for the purpose of varying the extent of eccentricity'between the crushing members, butthe combined eccentric mounting for the concavecrushing disk 8 is stationary relative to the frame '19.

The lubrication of the bearing surfaces of the crusher can be easily accomplished by passing lubricant through the passage 81 to the chamber 30, from which chamber the lubricant is fed downwardly automatically along {the bearing'surfaces of the sleeve 6 and shaft 2 by the action ofgra-vity thereon, and outwardlyalong the horizontal bearing surfaces of the various elements'by the action of centrifugal force thereon. As the crushing members are forced in contact with each other along their plane surface of coaction, only sufficient lubricant will be permitted to -pass between the members to efficiently lubricate the bearing surfaces, and the discharged product will not be flooded with oil.

The present disclosures show crushers in which the elements. are vertically disposed, the terms upper and lower being used in describing various parts thereof. It should the positively driven rotating members,

Y ters Patent,

' each other.

'of said members to positively fee material vious modifications will occur to a;

, flange connected to one of said members and 50 not be inferred however,-from this descriptive matter that the device cannot be'used in a horizontal or any other than a vertical position as the terms have merely been used to avoi complicated description. 'An advantage of having the crusher vertically disposed, is that the materialdischarged from the machine as well as the wear on the parts are more evenly distributed. Another 'advantage resulting from the vertical dispo sition of the machine is that the entering raw material can be deposited directly upon -By so arrangin the supporting bearings that the weight 0 the crushing members is carried by the stationary frame rather thanby the rotatin eccentric sleeves, the power necessary for driving the sleeves is reduced to a minimum. The compactness of the maf chine is also augmented by positioning the eccentric sleeves as near to the crushing members as possible. {',-I"-"--f It should be understood thatit isnot 'desired to belimited to the exact details-of construction shown and described," ffo skilled in the art. i

It is claimed, and desired to secure 1. In a crusher, a pair of rotatable crushing disks, inner and outer shafts wliichp said disks are carried, an eccentricfor"g'yrat-v in said outer shaft, and means for rotating said eccentric. f j' 1;,"

2. In a crusher, a pair of rota-tablecrushing disks, inner and outer shafts by which sald disks are carried, an eccentric for gyratin said outer shaft, and means for rotating sald eccentric independently of said disks and shafts.

3. In a crusher, a pair of rotatable crushing disks, shafts by which said disks are carried, a rotatable eccentric for gyrating one of said shafts, and a fixed bearing on which said eccentric is rotatable, saideccentric being located near said disks.

4. In a crusher, a pair of rotatable crushing members one -internal of the otherya extending toward its axis of rotation, a plane engagement between said flange and the other of said members, and rotary means positioning said members eccentrically of 5. In a crusher, a rotatable concave member, a rotatable convex member internal of the concave member, rotary means eccentrically positioning said members with the crushing surfaces nowhere in contact with each other, and means for causin rotation from end to end of the members by centrifugal force.

6. In a crusher, a pair of rotatable crushing members one internal of the other,

means for'causing rotation of said members to positively feed material along the members by centrifugal force, and rotary. means for-causing opposing surfaces of said members to approach and recede transversely to their axes.

7. In a crusher, a concavecrushing member, a convex crushing member internal of said concave member, a frame supporting.

said members, means forcausing rotation of said members to positlvely feed materlal from end to end of the members by centrifugal force, and means for gyrating one of said members relative to said frame.

'- '8." Inacrusher, a frame, two, parallel rotatable shaftsone internal of the-other carried by saidframe, coacting crusher heads icarried. bysaid'shaft's, and means for gyratingoneof said shafts relative to said frame. 9. In a crusher, two crushin members ha'vingtheir respective axes para lel to each other, one of said members extending around 'to and coacting in plane contact with'the rear of the other, means for positively rotating oneof said members,]and means for moving the other ofv said members so that its axis revolves aboutthe-axis of said positively rotated member;

10. In a crusher, a pairofcrushing disks, inner and outer shafts by whichfsaid 'disks. are carried, an eccentric for gyratingsaid outer shaft,:-.means;for varying the eccentricltyof said eccent c, and means for rotatingrsaid eccentric.

11. In :a cru her, aJpair' of rotatable crush.-

i"di'sks,=inner and'ofitenshafts by which lsa'lddisksare carried, an eccentric :forv gyrating"said;outer shaft, means for varying the eccentricity of said eccentric,,and means for rotating said eccentric independently of said'disks and shafts. s 12. In a crusher, a

crushing disks, shaftsh-by which said disks are carried, a rotatable eccentric. for gyrating one of said shafts, means2f0r'vary1ng the eccentricity of said eccentric, and'a fixed bearin on which said eccentric is rotatable. 13. n a crusher, a frame, two parallel ro-., tatable shaftsone internal of the other car'- ried, by said. frame, coacting crusher .hea'dsf carried by said shafts, means for gyrating one of said shafts,and means forvarying the radius of gyration.

14. In a-crusher, a pair of crushingbers, inner and outer shafts by-which said, -members are carried, a frame for supportm'gll 1 said shafts, an eccentric for gyrating. one of said shafts relative to -said'frame,-and means for pair of I rotatable for varying the eccentricity of said eccentric.

15. In a crusher, a pair of rotatable crush-J ing disks, inner and outer shafts by which said disks are carried, an eccentric for gyrating said outer shaft, and means for varying the eccentricity of said eccentric.

16. In a crusher, a pair of rotatable crushing members, shafts by which said members I ment' of said members toward and away 15 are carried, a frame for supporti shafts, an eccentric for gyrating one of said shafts relative to said frame, and means for varying the eccentricity of said eccentric.

In a crusher, a pair of rotatable crushing members, shafts by which said members are carried, an eccentric for gyrating oneof said shafts, means for varying the eccentric- 10 ity of said eccentric, and means adapted to rotate said eccentric in a direction oppositev to the direction of rotation. of saidmembers. 18. In a crusher, a pair of rotatable crushing members, means for permitting adjustng said from each other, shafts by which said memers are carried, a frame for supporting said shafts, .an eccentric for gyrating one of said shafts relative to said frame, and means for varying the eccentricity of said eccentric. 20

In testimony whereof, the signature of the inventor is aifixed hereto in the presence of two witnesses.

- WILLIAM H. LIEBER. Witnesses:

G. F, DE VVEIN, H. C. CASE.

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