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Publication numberUS2585943 A
Publication typeGrant
Publication dateFeb 19, 1952
Filing dateJan 27, 1949
Priority dateMar 1, 1943
Publication numberUS 2585943 A, US 2585943A, US-A-2585943, US2585943 A, US2585943A
InventorsKessler Lee H
Original AssigneeHarriet F Derrick, Nellie H Kessler, Norman H Kessler
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Impact rotor for stone breakers
US 2585943 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Feb. 19, 1952 L. H. KESSLER IMPACT ROTOR FOR STONE BREAKERS Original Filed March 1, 1943 Patented Feb. 19, 1952 2,585,943 IlVIPACT Ro'roR FoR- STONE BREAKERS Lee H. Kessler, Springville, N. "Y., "assigno'r of one-fourth to Harriet F. Derrick, one-fourth to Norman H. Kessler and one-fourth to Nellie H. Kessler, all of Springville, N.

Original application March '1, 1943, Serial No. 492,980. Divided and this application January 27, 1949, Serial No. 73,167

1 Claim. 1

- This invention relates to certain new and useful improvements in equipment for breaking or crushing stone and like material, but more particularly to the impact rotors employed in connection therewith, and is a division of my Patent No. 2,486,421, issued November 1, 1949.

It has for one of its objects to provide a rotor of this character having simple and reliable means for detachably supporting the impact blades thereon and for eifecting their ready installation and removal in a minimum period of time.

Another object of the invention is to provide an impact rotor having reversible blades together with novel clamping means for positively retaining them against displacement both axially and radially of the rotor.

Other features of the invention reside in the construction and arrangement of parts hereinafter described and particularly pointed out in the appended claim.

In the accompanying drawings:

Figure 1 is a sectional side elevation of a stone breaker showing my impact rotors. Figure 2 is a detached perspective view of one of the rotors. Figure 3 is an enlarged fragmentary cross section taken on line 3-3, Figure 4. Figure 4 is a fragmentary horizontal section taken on line 4-4, Figure 3. Figure 5 is a detached perspective View of one of the impact elements or blades.

Similar characters of reference indicate corresponding parts throughout the several views.

By way of example, I have shown my invention in connection with a double impeller impact crusher or breaker Which functions to break up or crush stone and like material by impact and while in suspension. It consists of a casing or housing Hl forming an enclosed crushing or breaking chamber into the upper end of which the stone to be crushed is delivered, as through a feed opening H, while the crushed stone is discharged from the lower end at I2. Disposed in the casing at opposite sides of the vertical center thereof are oppositely rotatable impact members in the form of rotors or impellers l3 which are mounted side by side on companion drive shafts [4 extending transversely through the casing between the inlet and discharge ends thereof and journaled at their ends in bearings I5. These rotors have impact elements or blades l6 thereon and are adapted to be driven at a high rate of speed in opposite directions so that the opposing faces thereof turn upwardly and tend thereby to direct the intercepted material, delivered between the rotors, upwardly and outwardly toward 2 the top and opposite ends of the casing. A substantial space is provided above the rotors .to afford a crushing zone for the rotor-trajected suspended stone and disposed in predetermined fashion in the casing and in correlation to the rotors are stationary impact bars ll, l8 extending transversely thereof and against which the stone is trajected by the rotors and further broken or reduced from the resulting impact. The bars I! are disposed substantially axially over the perspective rotors, while the companion impact bars I 8 are disposed in a row along the ends of the casing in spaced relation to the end walls thereof and the rotors and extend upwardly to a point adjacent the top of the casing. Some of these impact bars 3 may be supported in the opposite side walls of the casing while others adjoining the rotors may be supported as a unit in side plates i9 adapted for yieldable movement toward and from the companion rotor, as when some hard, non-crushable object is encountered. Furthermore, these impact bars are properly spaced and function as a screen to size the stone before it is discharged from the machine by gravity along the ends of the casing and through the discharge opening 12.

The impact blades 16 are reversible and are so mounted in the rotor l3 that they can be readily reversed or replaced when necessary in a minimum period of time and without disturbing the rest of the machine. To this end, each blade is shaped as shown in Figure 5 to provide two impact heads 20 along its opposite sides in coextensive relation thereto with a reduced connecting web 2! therebetween and adapted to be removably seated in a companion groove or recess 22 formed in the periphery of the rotor and extending parallel to its axis. This groove is undercut and of a cross section simulating that of one of the blade-heads and its connecting web, as seen in Figure 3, whereby the blade is effectually held against radial displacement with one of its heads projecting from the rotor for impacting engagement with the stone. At one side of its web-receiving portion and opening endwise of the rotor, the blade-receiving groove 22 has laterally-extending recesses or channels 23 whose side walls or those walls in opjaws to detachably hold the latter in place and effectually wedge and retain the rotor-blade against endwise displacement relative to the rotor. Upon removing the bolt and the clamping jaws, the blades can be readily slipped from their rotor grooves. To facilitate the reversal and replacement of the blade when necessary, the opposite side walls of the casing have alining openings 26 therein in endwise register with a given radial position of the blades to permit the insertion and removal of one or another of the blades to and from the rotors without dismounting the latter. or otherwise disturbing the machine. Normally these openings are closed by cover-plates 21 detachably held in place by latching bars 28.

I claim as my invention:

An impact rotor, comprising a body having longitudinal grooves in the periphery thereof, rotor blades detachably fitted in said grooves substantially radially of the rotor and having impact heads on its opposite longitudinal faces with a straight-sided connecting web therebetween defining laterally inclined shoulders, said grooves being substantially of the same cross section as said blades to slidably receive and retain them against radial displacement with one of the heads projecting beyond the rotor-periphery, the opposite ends of the rotor adjoining one side of the web-receiving portion of each groove having endwise-opening inwardly-tapering recesses in lateral communication therewith, and clamping members having tapered outer faces detachably fitted in opposing relation in said recesses for wedging contact along their outer faces with the companion tapered portions of the recesses and for bearing contact along their inner and bot tom faces with the adjoining straight and inclined faces of the web and inner head portion, respectively, of the companion blade for resisting its radial and endwise displacement.


REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,491,416 Plaisted Apr. 22, 1924 2,086,383 Gruender July 6, 1937 2,110,850 Symons Mar. 8, 1938 2,223,584 Symons Dec. 3, 1940 2,258,075 Symons Oct. 7, 1941 2,349,960 Hall May 30, 1944 2,373,691 Kessler Apr. 17, 1945 2,414,591 Fowler Jan. 21, 1947 FOREIGN PATENTS Number Country Date 2,930 Great Britain of 1885 456,445 Great Britain Nov. 9, 1936

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1491416 *Mar 15, 1923Apr 22, 1924Williams Patent Crusher & PulvRotary pivoted hammer
US2086383 *Sep 13, 1935Jul 6, 1937Nordberg Manufacturing CoImpact crusher
US2110850 *Feb 10, 1934Mar 8, 1938Nordberg Manufacturing CoCrushing method
US2223584 *Oct 24, 1938Dec 3, 1940Nordberg Manufacturing CoImpact plate
US2258075 *Feb 17, 1939Oct 7, 1941Nordberg Manufacturing CoHolding means for impact plates
US2349960 *Jun 26, 1942May 30, 1944Hall James ADisintegrator rotor for use in conjunction with disintegrating equipment
US2373691 *May 13, 1940Apr 17, 1945Kessler Lee HStone crushing apparatus
US2414591 *Jul 22, 1943Jan 21, 1947Jeffrey Mfg CoCrusher roll with sectional surface elements
GB456445A * Title not available
GB188502930A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2747803 *Jul 9, 1952May 29, 1956Pettibone Mulliken CorpHammer rotor for hammermills
US2889119 *May 9, 1955Jun 2, 1959Hazemag HartzerkleinerungSlinging impact breakers
US3096035 *Aug 4, 1960Jul 2, 1963Barber Greene CoRotary impact crusher
US3146961 *Aug 23, 1962Sep 1, 1964Fuller CoImpact hammer
US3608841 *Mar 12, 1969Sep 28, 1971Wageneder FranzRotary impact crusher
US4046325 *Jun 1, 1976Sep 6, 1977Steve TucsokApparatus for crushing rock, stone and like material
US4311284 *Feb 8, 1980Jan 19, 1982The W. R. Stamler CorporationDevice for fracturing material
US4373678 *Jun 30, 1980Feb 15, 1983Reitter Guenther WRotary impact crusher having a continuous rotary circumference
DE10111305A1 *Mar 9, 2001Jun 13, 2002Juergen SchenkApparatus for processing mineral materials comprises feed device having opening for feeding material, parallel rotating shafts connected with drive device, and wedge elements for producing chamfering effect
DE10111305B4 *Mar 9, 2001Jul 27, 2006Schenk, JürgenApparatus for processing mineral materials comprises feed device having opening for feeding material, parallel rotating shafts connected with drive device, and wedge elements for producing chamfering effect
DE102004014258C5 *Mar 24, 2004Sep 16, 2010Hosokawa Alpine AgMühle mit auswechselbaren Schlagleisten
EP1579915A1Mar 18, 2005Sep 28, 2005HOSOKAWA ALPINE AktiengesellschaftMill with replacable beater strip
U.S. Classification241/191, 241/294
International ClassificationB02C13/28, B02C13/00
Cooperative ClassificationB02C13/2804
European ClassificationB02C13/28B