US 2575057: "ENDLESS BREAKER PLATE STRUCTURE FOR CRUSHERS (OCR)"



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Patent Overview

Patent Title: ENDLESS BREAKER PLATE STRUCTURE FOR CRUSHERS (OCR)
Patent Number: 2575057 Filing Date: Mar 14, 1949
Application Number: Issue Date: Nov 13, 1951
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Classifications

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US ClassificationDescription
241/200000 SOLID MATERIAL COMMINUTION OR DISINTEGRATION
^----APPARATUS
     ^----Cooperating comminuting surfaces (e.g., jaw crusher)
          ^----Endless belt type comminuting surface or surfaces
241/187000 SOLID MATERIAL COMMINUTION OR DISINTEGRATION
^----APPARATUS
     ^----Rotary striking member with moving cooperating surface or member
241/223000 SOLID MATERIAL COMMINUTION OR DISINTEGRATION
^----APPARATUS
     ^----Cooperating comminuting surfaces (e.g., jaw crusher)
          ^----Rotary surface (or surfaces)
               ^----Circumferential or tangential flow of material (e.g., roll mills or roll and concave mills)
                    ^----With material feed and/or discharge mechanism or control
                         ^----Endless belt conveyer
241/229000 SOLID MATERIAL COMMINUTION OR DISINTEGRATION
^----APPARATUS
     ^----Cooperating comminuting surfaces (e.g., jaw crusher)
          ^----Rotary surface (or surfaces)
               ^----Circumferential or tangential flow of material (e.g., roll mills or roll and concave mills)
                    ^----Both cooperating surfaces rotate (e.g., roll mills)
                         ^----Surfaces rotate in same direction and/or mounted on non-horizontal axis
241/235000 SOLID MATERIAL COMMINUTION OR DISINTEGRATION
^----APPARATUS
     ^----Cooperating comminuting surfaces (e.g., jaw crusher)
          ^----Rotary surface (or surfaces)
               ^----Circumferential or tangential flow of material (e.g., roll mills or roll and concave mills)
                    ^----Both cooperating surfaces rotate (e.g., roll mills)
                         ^----Cooperating non-smooth surface characteristic

Description

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Nov. 13, 1951 E. H. KEIPER 2,575,057 ENDLESS BREAKER PLATE STRUCTURE FOR CRUSHERS Filed March 14, 1949 N N tti ol IN!IENTOR. BY RTRORNEY


Patented Nov. 13, 1951 2 1 5 7 5 @ 0 5 7 UNITE@D@ @@:S,TATE-.S PATENT @OFF.I-C@E @2@@57,5*057 ENDLGSS@BREA"R PLATE.STRUCTURE -FOR -CRUSHEP.9 Edwin H. Keiper, Phfladelphia, Pai@,.Assigngr @,to @p6iii2olvania Crusher Compgny,.Pbil;x44@lp.414, p@a@"of Newk-ork Applic.ttion March-.,14.1949 Scrial@No.@81;361@ 12 Claims. (Cl.,@241--.r@223) @ 2 T-his invention rel-ates!to"roll,6r-ushers,@-.qnd,'par- tieularly to breaker -plate -8true-ture --for @such crushers @ for handling -wet and sticky materials. The-object of the invention@is to provide,an efficient@feedi ng-and@crushing@adtion whic'h@-will @@6 carry the material effectively through the crush- ing zone and cooperate with the roll to attain re- duction of the material to desired size. Further objects of the invention particularly in the form and mounting of the traveling break- 10 er plate will appear from the following descrip- tion taken in connection with the accompany- ing drawing showing a vertical sectional view through the machine. In the accompanying drawing the roll crusher Ir) frame comprises side pieces 91 base plate IO and end piece I 1, the hopper 12 being mounted as shown on the frame having a slanting end por- tion coinciding in direction with the cross piece 13 and delivering material through the opening 20 between the cross piece and the edge 14 of the opposite member of the hopper. A roll crusher shaft 15 mounted in bearings in the side pieces 9 carries the crusher roll 16 having teeth 17, 18, and the crushed material is dis- 25 charged downward through the opening in the base plate I 0 and the outlet 19. A traveling breaker plate structure 20 composed of a continuous chain having link members 21 with teeth 22 is positioned as shown to approach 30 the periphery of the crusher roll at an angle across the feed of the material from the hopper 12, the crusher roll rotating clockwise as indi- cated and the breaker plate sections moving downward adjacent the roll. 35 The apron 20 has its breaker plates 21 of pre- determined length pivoted together to form an outer endless chain which is mounted on on upper sprocket 47 of shaft 46 which may be driven, and the lower portion of the chain passes 40 around an auxiliary endless link belt of rollers 53 running around the lower cylinder 50 on shaft 48 and the upper cylinder roller 52 on shaft 51 between the sides 9 of the frame. The shaft 48 is preferably driven as by a chain running on the 45 sprocket at the end of the shaft. Slide plates 55 joined by web members 56 are mounted on cross bars 57 between the frame sides 9 and the crush- ing thrust against the apron is transmitted from the apron links 21 to the rollers 53 of the link 50 belt and thence to the slide plates 55 so that these rollers 53 joined together in endless chain formation by links 54 move downward with the chain 20 at about one-half the speed of the outer chain and form an intermediate roller support 55 b6tweon@ ihe@46hain-iand:the@slideplate @55 raducing the -f-rictibhal resistance between the - apron @@and -the @plate. 'The successive @rollers 53 @are -spaaed ap.ar.t a distance @ less -@than @the length of each breaker bl-ate 21 s() @ that there @is @ at least Dne roller under each breaker plate and link members 54 may be provided with resilient strips yieldingly pressing their edges along the surface of the slide plates 55 to clear these surfaces of accumulated particles of crushed material. This traveling breaker plate or apron moving downward with a lineal speed of 3' to 4' per minute, for instance, forms a retaining movable wall for the material, constantly tending to drag the material down between the roll crusher teeth and the apron moving in the same direction at a lesser speed to the crushing area. Here the teeth of the roll and the teeth of the apron cooperate to break the material, the major teeth 18 of the crusher preferably having their tips moving in the grooves separating the teeth 22 of the chain or apron. Irl this manner the bottom and the side of the chamber receiving the material from the hopper 12 both ry.,ove downward in the same direction along converging lines to drag the material in between them, this combination being particularly effective in handling wet and sticky materials and avoiding any arching over or packing of these materials. The discharge opening 13, 14 of the hopper 12 is large and directed downward at an angle, and the traveling apron 20 proceeds downward from the top point well above the lower lip 13 of the hopper and substantially on a level with the upper edge 14 of the hopper opening. This combination of the hopper formation and the cooperating traveling surface of the roll and apron will take bauxite and other sirhilar plastic or wet materials and subject them to effective reduction from relatively large pieces, 24" to 30", to smaller fragments such as 1 to 11/21', the exact reduction depending, of course, upon the hardness and size of the entering pieces of the material. The wide hopper opening provides an extensive feed of the material to the moving surfaces of the roll and apron so as to avoid any constriction or bottle-necks, and in effect submitting the entire rnass of the hopper feed to the action of the moving surfaces so that the material is compelled to follow down into the grip of the crusher action between the roll and the apron. This is a continuation-in-part of my application, Serial No. 664,057, filed April 22, 1946, Patent No. 2,464,774, issued March 15, 1949,


3 claim: 1. In a crusher the combination with a crushing rotor engaging the material during the crushing operation, of a breaker plate structure comprising breaker plates of predetermined length pivoted together to form an outer endless chain engaging said material and having a path of movement adjacent the periphery of said crushin.- rotor to receive the crushing thrust of said material against said rotor, a primary rotary member supporting and positively engaging and driving said endless chain at a predetermined rate, supporting means positioned within said endless chain and comprising a side plate and a secondary rotary member having a cylinder within the opposite end of said endless chain adjacent the periphery of said crushing rotor, an intermediate rotary member between said @ftrst named rotary members, and an inner endless link belt of roller members spaced apart less than the said length of said b,reaker plates and passing around said intermediate ro,tary member and intervening between said outer endless chain and said cylinder at their center portions and engaging the surface of said cylinder and the 2,575,057 4 irmer surface of said: outer endless chain and supporting said chain from the surface of said rotary cylinder and moving at less than said predetermined rate to provide an anti-friction back- r) ing for the outer endless chain of breaker plates around said cylinder at the area of crushing action between said crushing rotor and said breaker plate structure. 2. A crusher as set forth in claim 1 in which 10 the second rotary member is driven to have its cylinder turn positively in the direction of movement of the outer endless chain of breaker plates. EDWIN H. KEIEPER. REFERENCES CITED The following references are of record in the file of this patent: @UNITED STATES PATENTS 20 Nuw-ber Name Date - 1,539,542 Carmichael -------- May 29, 1925 1,543,843 owinn ------------ June 30, 1925 1,560,049 Frickey ------------ Nov. 3, 1925 2,150,984 Near -------------- Mar. 21, 1939 2,406,842 Lupton ------------ Sept. 3, 1946

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