US1626535A - Machine for breaking ore and other minerals - Google Patents

Machine for breaking ore and other minerals Download PDF

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US1626535A
US1626535A US8815A US881525A US1626535A US 1626535 A US1626535 A US 1626535A US 8815 A US8815 A US 8815A US 881525 A US881525 A US 881525A US 1626535 A US1626535 A US 1626535A
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plates
jaw
corrugations
jaws
machine
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Hush Ralph
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C1/00Crushing or disintegrating by reciprocating members
    • B02C1/02Jaw crushers or pulverisers
    • B02C1/04Jaw crushers or pulverisers with single-acting jaws

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  • This invention consists of improvements in machines of the'j awcrusher type for breaking or crushing ore and other minerals, and is particularly applicable for reducing ore to a size suitable for introduction into a fine grinding machine.
  • One feature of the invention can, however,-be adopted in the construction of other types of jawcrushers', such as, for example, the Blake crusher.
  • the swinging o movable jawor stock is directly actuated or operated to cooperate with thest'ationai y jaw, as for example, through theinedium, of connecting rods and eccentrics or their equivalent off the main driving shaft"; the jaw is suspended-from the upper end and the powerqi's applied to it at the lower end,
  • The-stationary j awisprovided' with" adjusting means which automatically accommod'atesitself to-the positions taken up Y by the jaw after'any adjustment, whereby'the stationary jaw can be' finely adjusted, easily and quickly, to obtain the desired si'zefof product, the main frame being appropriately shaped or inclined to provide the requisite type, and
  • the corrugations may be formed on the plate extending for a -portionsay half-of the depth thereof, and other corrugatons, stag-' gered in relation to the first-mentioned corrugations, may be formed on and extend for the rest-say halfof the depth of the plate;
  • the staggering of the corrugations renders the plates interchangeable and also independently reversible or each capableof being inverted or turned end for end.
  • This construction has tliefurthei' advantage that the plate canbe used for either the swinging orstationary jawand obviates the necessity I for providing different constructions of platesfor each jaw as is-the casewith plates having continuous corrugations,
  • Fig. 1 is a sectional elevation of amachine embodying the various features ofitl e invention, the section being takenjon line wm of, Fig. 2.
  • Fig. 3 is an elevation of one'of-tlie renew, able wearing plates of the crusher jaws,,de-' I Fig; Gris a 'plan view of the plates of the co operatiiig jaws of a crusher of the"-Blake Fig; 7 is ahalf-sectiona-l'elevation of the big end of one of the connecting rods.
  • Figs, 1, and 2 is constructed to provide at one'end a vert cal housing or crushing chamber 1 and at the other end to form a support or framework to provide 'orcarry the bearings 2,3, for the driving shaft 4.
  • shaftsorpivotse 6, respectively.
  • From the shaft 5 is suspended the swinging aw 7, and in like manner from the shaft 6 is suspended the stationary adjustable jZLW8i
  • the re'a'i "or' back end of th hin'ob chamber 1 isinclined or sloped downwardly and rearwardly to the base, as indicated" at 9, and the sideplates 1'0, 11, of the rear portion 'of the main framel are sloped downwardly from the top of the crushing chamber 1 to the base at 12.
  • These rearwardly inclined side plates 10, 11, provide it the bearings 2, 3, respectively, for the driving shaft 4, on which, between the side plates 10, 11, is secured the balance or flywheel 13 of the machine.
  • the driving shaft 4, at the one side, tends through the bearin 3 and has arranged thereon the fast and loose pulleys 14, 15, respectively; 16 being a pedestal or support for a bearing 17 in which the outer end portion of the shaft '4, beyond the loose pulley 15 is rotatably carried. 18 is a cap fixed 'to the outside of the bearing 17 for closing the bearing to. form a lubricant holding from said eccentrics 22, 23, to the movable jaw 7 by means of a pair of connecting rods 24, 25, placed at the-outer sides of the main frame 1.
  • the connecting rods 24, 25, are
  • the other ends of-the connecting rods 24, 25, are connected to the lower end of the swinging jaw 7 by means of a shaft 30, said shaft 30 loosely fitting the hole 31 through 1 1 the lower end of the jaw 7 and passing throughholes 31 in the sides of the main frame, which holes are large enough to allow of the movement of the shaft 30. therein.
  • connectingrods 24, 25, are attached to the .ends of the shaft 30 by set screws32'.
  • the jaws 7, 8, are recessed on their opposing working faces to receivethe wearing plates 33, 34, and wedge pieces 35 and screws 36 are provided for securing the plates 33, 34, in said recesses
  • the bottom of the recess and the lower side of the wedge 35-ineach jaw or stock are made with correspondmg tapers to allow of thewearing plates being renewed, or, if desired, being reversed and /or interchanged.
  • the plates jaw 8 may, as shown, comprise an adjusting screw 36 and screw-threaded handle or wheelnut 37, the latter being fashioned with a projection 38 which is part of a sphere and projects into a correspondingly shaped recess 39 formed in a bracket or extension 40 providedon the frame 1 for supporting the adjusting means,
  • the adjusting screw 36 projects down the back of the stationary jaw 8 between it andjthe back wall of the crush ing chamber 1?, and at its lower end is pivotally attached, by means of pivot pin 40*, to an adjusting block 41, which block, at the front, engages with the back of the stationary jaw 8, and at the other side, whichis concave or of arcua-te shape in cross-section,
  • the part 42 on the opposite side or back i is made plane and slidingly contacts with the rearwardly inclinedwall 9 ofthe back ofthe crushing chamber 1 As shown in Figs. 1 to .4,-the wearing plates 33, 34, are formed with shallow and.
  • corrugations 44 extending forone-half the depth of the plate, and with other corrugations 45, staggered in relation to the'corrugations 44, for the other half ofthe depth ofthe wearing plate.
  • the inner ends of the raised portions of the corrugations 44 pro ject-between the ends ofthe relatively staggered raised portions of the corrugations 45,
  • the corrugations of the wearing plates of the two'jaws are such that those of the one jaw are disposed opposite to and co-act or cooperate with those of the other jaw, i. e., the convex portions of the corrugations of the one jaw are. placed opposite to andco ac t'or co-operate with the concave portions of the other jaw in all'positions of the wearing plates-see Figs. 1 and 33, 34, being of identical construction,it will be understood that they are interchangeable and independently reversible. or capable of being turnedend for end.
  • the corrugations 44, 45 run from top to bottom of the plates, and, as si'iown, preferably extend the full width of the jaws. 'The numher and dimensions of the corrugations are.
  • a tray or receiver (not shown) for the connecting vrods 24 and/or on'the ends of the shaft 30, and so prevent knock.
  • a fiat spring 47 adjust-- ably fixed, near the upper end to the frame 1 by means of a bolt 48, and at the lower end attached by means of a hook-shaped bolt 49 to the lower end of the jaw 7.
  • 50 is the adjusting nut for the bolt 49, and 51 a pin fixed across a recess 52 in' the back of the jaw 7, with which pin- 51 the hooked extremity of the bolt 49 engages.
  • An opening 53 is provided in the back of the frame 1 forthe wing-nut 50 to move in and also to provide access to the back of the swinging jaw 7.
  • 54 is a pin fitted in a hole in the upper portion ofthe end of the frame 1 for engaging in a corresponding hole in the upper end of the spring 47, for retaining it in a central position.
  • the wide andshallow corrugations are I continuous or run from the topto the bottom edges of the plates (or jaws).
  • corrugated working-faces may be tinuous corrugations would be renewable and reversible, but not being OflClGlllJlGiLl construction, would not be interchangeable.
  • An advantage of constructing the wearing tions is that the passage of the materiahand particularly flat pieces, through the jaws without being" reduced or crushed pre: vented, and that an opening is provrded, ex
  • anarcuate projection 59 for the purpose of. facilitating the lining of the big ends (or both ends) of the connecting rods 24, 25, anarcuate projection 59,. as shown in the big end of one of the connecting rods in Fig. 7, is provided, which projection 59 forms part of the bore and serves for centering a mandrel around which the molten metal is run into" line the bearing.
  • Amachine for breaking ore-and other minerals including a crushing chamber, an" adjustable stationary jaw and a-swinging j aw, means for directly actuating the swing.- ing jaw" to co-opera'tewith the stationary jaw, and means for adjusting the stationary jaw comprising abl'ock' arranged between the back-of the stationary crushing jaw and the wall of the crushing chamber, one face of said block beingv constructed with "a con cave surface, a part arranged between the concave surface of the block and the wall of the chamber and having a convex surface tacts, and mea ns for raising and lowering the ad usting block, as set forth, 7
  • a n'iach'ine for breaking ore, and other minerals including a crushing chamber, a v stationary aw and a swinging aw, means a corresponding to and co-acting with the concave surface of the block withwhich it conj 1 block being constructed with a 'concaye surface, a part arranged between the concave suriace otthe block and the Wall of the chamber and having a convex surface corresponding toand co-acting with the concave surface of theblock with which it contacts,
  • said means comprising a screw carried'by an extension of the mainframe of the crushing chamber and a hand-wheel engaging said screw, the tvheel and extension being constructed to provide a ball and ing jawspsaidwearing plates being constructed with wide and shallow corruga tions 'Off uniform depth throughout the length ot said corrugations, said corr'uga tions extendingfor a portion only of the depth of the wearing plate, and with an equal number of other exactly similar and oppositely placed corrugations staggered in relation to the first-mentioned corrugations for the remainder of the depth of the plate,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)

Description

April 26, 1927.
R. HUSH MACHINE FOR BREAKING ORE AND OTHER MINERALS Fi led Feb. 12. 1925 2 Sheets-Sheet 1 :5 1 55 6 I as as 10 a I :f w"' 2 1927. R. HUSH MACHINE FOR BREAKING ORE AND OTHER MINERALS 2 Sheets-Sheet 2 Filed Feb. 12. 1925 .illlllL Patented Apr. 26,
a stares tezaeig ears-hr nearer amide MACHINE non BREAKING one Annornnn MINERALS.
Application filed February 12, 1925, Serial No, 8,815, and in the "Union of SouthAfrica February 18, 1924.
This invention consists of improvements in machines of the'j awcrusher type for breaking or crushing ore and other minerals, and is particularly applicable for reducing ore to a size suitable for introduction into a fine grinding machine. One feature of the invention can, however,-be adopted in the construction of other types of jawcrushers', such as, for example, the Blake crusher. I
According to this invention the swinging o movable jawor stock is directly actuated or operated to cooperate with thest'ationai y jaw, as for example, through theinedium, of connecting rods and eccentrics or their equivalent off the main driving shaft"; the jaw is suspended-from the upper end and the powerqi's applied to it at the lower end,
and the crushing of the m'aterial takes place.
between the ,poi'nt of suspension and the point of application of the power, thereby Y obtaining more efiicient application of; the
power. The-stationary j awisprovided' with" adjusting means which automatically accommod'atesitself to-the positions taken up Y by the jaw after'any adjustment, whereby'the stationary jaw can be' finely adjusted, easily and quickly, to obtain the desired si'zefof product, the main frame being appropriately shaped or inclined to provide the requisite type, and
accommodation for the adjusting means."
The renewable wearing plates of the (3111811? ing jawsare formed with shallow and wide, corrugations, asopposed to the 1 ordinary V'- shaped ribs or projections, which corrugae tions may be continuous for the full depthv of the wearing plate. Alternatively, the corrugations may be formed on the plate extending for a -portionsay half-of the depth thereof, and other corrugatons, stag-' gered in relation to the first-mentioned corrugations, may be formed on and extend for the rest-say halfof the depth of the plate; The staggering of the corrugations renders the plates interchangeable and also independently reversible or each capableof being inverted or turned end for end. This construction has tliefurthei' advantage that the plate canbe used for either the swinging orstationary jawand obviates the necessity I for providing different constructions of platesfor each jaw as is-the casewith plates having continuous corrugations,
In applying that feature of the invention drawings, wherein which i-elateszto the crushing jaws or wearing-plates therefor to other types ofjaw ci'ushers, such as, for example,the Blake I crusher, the shallow andfwide corrugations on the working faces of'the aws or renews ablewearing plates are. preferably continu bus, or run from thetop tofthe bottom edges ofsaid jaws or plates, or for'the full" dept-h thereof. As a result or this construction the aws or platesare reversible 'orca'pa'ble of being inverted or turned end for end. The invention will be more fully describedwith the aid of the accompanying Fig. 1 is a sectional elevation of amachine embodying the various features ofitl e invention, the section being takenjon line wm of, Fig. 2. V
F 1g. 2 183, plan of the machine;
Fig. 3 is an elevation of one'of-tlie renew, able wearing plates of the crusher jaws,,de-' I Fig; Gris a 'plan view of the plates of the co operatiiig jaws of a crusher of the"-Blake Fig; 7 is ahalf-sectiona-l'elevation of the big end of one of the connecting rods.
Referring to the embodiment of the sev- 1 eral feat-ures of the invention depicted in Figs. 1' to 4 and 7, the'numeral 1 denotes.
the main frame of the machine, which, as.
shown in Figs, 1, and 2, is constructed to provide at one'end a vert cal housing or crushing chamber 1 and at the other end to form a support or framework to provide 'orcarry the bearings 2,3, for the driving shaft 4. Between the sides of'the vertical" housing 1* and" near both endsthereof are arranged shaftsorpivotse, 6, respectively.' From the shaft 5 is suspended the swinging aw 7, and in like manner from the shaft 6 is suspended the stationary adjustable jZLW8i The re'a'i "or' back end of th hin'ob chamber 1 isinclined or sloped downwardly and rearwardly to the base, as indicated" at 9, and the sideplates 1'0, 11, of the rear portion 'of the main framel are sloped downwardly from the top of the crushing chamber 1 to the base at 12. These rearwardly inclined side plates 10, 11, provide it the bearings 2, 3, respectively, for the driving shaft 4, on which, between the side plates 10, 11, is secured the balance or flywheel 13 of the machine. I
v The driving shaft 4, at the one side, ex: tends through the bearin 3 and has arranged thereon the fast and loose pulleys 14, 15, respectively; 16 being a pedestal or support for a bearing 17 in which the outer end portion of the shaft '4, beyond the loose pulley 15 is rotatably carried. 18 is a cap fixed 'to the outside of the bearing 17 for closing the bearing to. form a lubricant holding from said eccentrics 22, 23, to the movable jaw 7 by means of a pair of connecting rods 24, 25, placed at the-outer sides of the main frame 1. The connecting rods 24, 25, are
adjustable as to length, the parts of the big ends being provided with liners or distance pieces 26 placed between said parts-see Fig.7
a plate fixed on the end of the shaft 4 at the outside of the big end of the connecting rod 24, for retaining the latter in position, and 28 is a distance piece or collar which also serves as a stop for the other connectingrod between the latter and the fast pulley 14. 29 are holes formed in the shaft 4 between the bearings 2, 3, and the ends of the connecting rods 24, 25, respectively, which holes provide ducts or chan-v ne-ls for the passage of lubricant.
The other ends of-the connecting rods 24, 25, are connected to the lower end of the swinging jaw 7 by means of a shaft 30, said shaft 30 loosely fitting the hole 31 through 1 1 the lower end of the jaw 7 and passing throughholes 31 in the sides of the main frame, which holes are large enough to allow of the movement of the shaft 30. therein. The
connectingrods 24, 25, are attached to the .ends of the shaft 30 by set screws32'.
The jaws 7, 8, are recessed on their opposing working faces to receivethe wearing plates 33, 34, and wedge pieces 35 and screws 36 are provided for securing the plates 33, 34, in said recesses The bottom of the recess and the lower side of the wedge 35-ineach jaw or stock are made with correspondmg tapers to allow of thewearing plates being renewed, or, if desired, being reversed and /or interchanged.
The adjusting means for the stationary 2. The plates jaw 8 may, as shown, comprise an adjusting screw 36 and screw-threaded handle or wheelnut 37, the latter being fashioned with a projection 38 which is part of a sphere and projects into a correspondingly shaped recess 39 formed in a bracket or extension 40 providedon the frame 1 for supporting the adjusting means, The adjusting screw 36 projects down the back of the stationary jaw 8 between it andjthe back wall of the crush ing chamber 1?, and at its lower end is pivotally attached, by means of pivot pin 40*, to an adjusting block 41, which block, at the front, engages with the back of the stationary jaw 8, and at the other side, whichis concave or of arcua-te shape in cross-section,
with a part 42 which is correspondingly con-v vex. 4 This latter part 42 is loosely attached to the adjusting block 41 by a screw 43 which allows of the requisite movement of the block 41 around the-surface'of the part 42.
The part 42 on the opposite side or back i is made plane and slidingly contacts with the rearwardly inclinedwall 9 ofthe back ofthe crushing chamber 1 As shown in Figs. 1 to .4,-the wearing plates 33, 34, are formed with shallow and.
wide corrugations 44 extending forone-half the depth of the plate, and with other corrugations 45, staggered in relation to the'corrugations 44,, for the other half ofthe depth ofthe wearing plate. The inner ends of the raised portions of the corrugations 44 pro ject-between the ends ofthe relatively staggered raised portions of the corrugations 45,
so that the raised or convex portions of the corrugations 44 merge into the concave portions between the relatively staggered, raised or convexportions of the corrugations 45, and vice versa. The corrugations of the wearing plates of the two'jaws are such that those of the one jaw are disposed opposite to and co-act or cooperate with those of the other jaw, i. e., the convex portions of the corrugations of the one jaw are. placed opposite to andco ac t'or co-operate with the concave portions of the other jaw in all'positions of the wearing plates-see Figs. 1 and 33, 34, being of identical construction,it will be understood that they are interchangeable and independently reversible. or capable of being turnedend for end.
The corrugations 44, 45, run from top to bottom of the plates, and, as si'iown, preferably extend the full width of the jaws. 'The numher and dimensions of the corrugations are.
designed to reduce the material to the desired size of product.
' By the adoption of the wearing plates constructed as above described, I obtain,
greater durability and greater uniformity reduced beneath the jaws7, 8, theremay be arranged a tray or receiver (not shown) for the connecting vrods 24 and/or on'the ends of the shaft 30, and so prevent knock. In Fig.
1 1- ofthe drawings, means provided for this :by bolts 57.
purpose consists; of a fiat spring 47 adjust-- ably fixed, near the upper end to the frame 1 by means of a bolt 48, and at the lower end attached by means of a hook-shaped bolt 49 to the lower end of the jaw 7. 50 is the adjusting nut for the bolt 49, and 51 a pin fixed across a recess 52 in' the back of the jaw 7, with which pin- 51 the hooked extremity of the bolt 49 engages. An opening 53 is provided in the back of the frame 1 forthe wing-nut 50 to move in and also to provide access to the back of the swinging jaw 7. 54 is a pin fitted in a hole in the upper portion ofthe end of the frame 1 for engaging in a corresponding hole in the upper end of the spring 47, for retaining it in a central position. v
55, 56, are renewable lining plates fitted in recesses in the frame 1, at the sides of the crushing chamber 1, and fixed therein In the drawings the machine is provided with-fast and loose pulleys'14, 15,- respectively, for driving it by power,'but if the machine be designed for crushing samples,
it may be operated by hand through the medium of a crank handle or lever fixed to the driving shaft 4. j
Renewable, independently reversible and interchangeable wearing plates constructed with staggered wide and shallow corrugations, as above described, can with advantage be adopted in jaw crushers 'of other types, as for example, the Blake type, whether the jaws be operated by the means above described, or otherwise. a v
In the modified form of the renewable wearing plates shown in Figs. 5 and 6, suit- .able for a crusher of the Blake or similar types, the wide andshallow corrugations are I continuous or run from the topto the bottom edges of the plates (or jaws).
with the corrugated working-faces, may be tinuous corrugations would be renewable and reversible, but not being OflClGlllJlGiLl construction, would not be interchangeable. I
In some types of jaw crusliers the fixed jaw would probably require to be constructed with one extra corrugation, that is tosay plates with the wide and shallow. corruga- The plates or the jaws themselves, constructed is: a
it would. be a-corrugation wider than the swing jaw.
An advantage of constructing the wearing tions is that the passage of the materiahand particularly flat pieces, through the jaws without being" reduced or crushed pre: vented, and that an opening is provrded, ex
tending the full width of the .jaws,"of unij form width between the corrugations of the two jfLWS. The. long sweep or radiusiof thecorrugations ensuresthat the hollow on 0011- cave parts of the corrugations of, the plates (or jaws) shall be worn down uniformly with, the. intervening convexor projecting parts, t'hereby retaining the, corrugated: for? mation of the plates (or jaws) during the whole of thetime they are in use, or until they are worn out. The alternating convex and concave formation of both the swing and fixed jaws ensures that the convex portions of the one shall enter the concave portions of the other,
as shown in Fig. 6, which, as previously ex-.-
plained, results in uniform wear overthe width of the surface of the jaws and so materially increases the life of the plates or jaws.
. For the purpose of. facilitating the lining of the big ends (or both ends) of the connecting rods 24, 25, anarcuate projection 59,. as shown in the big end of one of the connecting rods in Fig. 7, is provided, which projection 59 forms part of the bore and serves for centering a mandrel around which the molten metal is run into" line the bearing. v
What I claim as my invention and desire to protect-by Letters Patent is 1. Amachine for breaking ore-and other minerals, including a crushing chamber, an" adjustable stationary jaw and a-swinging j aw, means for directly actuating the swing.- ing jaw" to co-opera'tewith the stationary jaw, and means for adjusting the stationary jaw comprising abl'ock' arranged between the back-of the stationary crushing jaw and the wall of the crushing chamber, one face of said block beingv constructed with "a con cave surface, a part arranged between the concave surface of the block and the wall of the chamber and having a convex surface tacts, and mea ns for raising and lowering the ad usting block, as set forth, 7
2. A n'iach'ine for breaking ore, and other minerals, including a crushing chamber, a v stationary aw and a swinging aw, means a corresponding to and co-acting with the concave surface of the block withwhich it conj 1 block being constructed with a 'concaye surface, a part arranged between the concave suriace otthe block and the Wall of the chamber and having a convex surface corresponding toand co-acting with the concave surface of theblock with which it contacts,
and means for raising and lowering the adjusting bloc-k, said means comprising a screw carried'by an extension of the mainframe of the crushing chamber and a hand-wheel engaging said screw, the tvheel and extension being constructed to provide a ball and ing jawspsaidwearing plates being constructed with wide and shallow corruga tions 'Off uniform depth throughout the length ot said corrugations, said corr'uga tions extendingfor a portion only of the depth of the wearing plate, and with an equal number of other exactly similar and oppositely placed corrugations staggered in relation to the first-mentioned corrugations for the remainder of the depth of the plate,
whereby the plates are rendered both reversible and interchangeable, as set forth.
In testimony whereof I have signed my name to this specification.
RALPH HUSH.
US8815A 1924-02-18 1925-02-12 Machine for breaking ore and other minerals Expired - Lifetime US1626535A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2758794A (en) * 1952-07-08 1956-08-14 Allis Chalmers Mfg Co Jaw plate for jaw crushers
US2873922A (en) * 1954-11-22 1959-02-17 Arthur W Fahrenwald Jaw crusher
US2938675A (en) * 1957-12-16 1960-05-31 John F Cushman Rock crusher
US3201054A (en) * 1963-05-09 1965-08-17 Ivan C King Jaw crusher faceplate
US4047671A (en) * 1975-05-30 1977-09-13 Hermann Berstorff Maschinenbau Gmbh Continuously operable apparatus for the preparation and/or processing of synthetic plastics or rubber moulding compounds
EP0148780A2 (en) * 1984-01-10 1985-07-17 Kawasaki Jukogyo Kabushiki Kaisha Rocking slag breaker

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2758794A (en) * 1952-07-08 1956-08-14 Allis Chalmers Mfg Co Jaw plate for jaw crushers
US2873922A (en) * 1954-11-22 1959-02-17 Arthur W Fahrenwald Jaw crusher
US2938675A (en) * 1957-12-16 1960-05-31 John F Cushman Rock crusher
US3201054A (en) * 1963-05-09 1965-08-17 Ivan C King Jaw crusher faceplate
US4047671A (en) * 1975-05-30 1977-09-13 Hermann Berstorff Maschinenbau Gmbh Continuously operable apparatus for the preparation and/or processing of synthetic plastics or rubber moulding compounds
EP0148780A2 (en) * 1984-01-10 1985-07-17 Kawasaki Jukogyo Kabushiki Kaisha Rocking slag breaker
EP0148780A3 (en) * 1984-01-10 1987-10-07 Kawasaki Jukogyo Kabushiki Kaisha Rocking slag breaker

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