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| Number | Title | Issue Date |
| 7140568 | Multi-sided shaft for a crusher A shredder, crusher, hammermill, ringmill or the like is provided with a multi-sided rotor shaft to which spider arms and hammers are mounted. The rotor shaft has at least one pair, and preferably two or more pairs, of opposing sides. The hammers are pivotally mount... | 11/28/2006 |
| 4988045 | Vertical scrap metal crusher A scrap metal crusher includes a tapered chamber having a relatively large inlet at one end and a relatively small outlet at the opposite end of the chamber. A rotary crusher arm is axially mounted for rotation in the tapered chamber. A plurality of vanes... | 01/29/1991 |
| 4720051 | Hammer-type shredder with air deflector A shredding machine has a housing provided with an upwardly presented inlet, and in addition a rotor which revolves within the housing over an arcuate grate which is also in the housing. The rotor includes hammers, the tips of which describe a hammer circ... | 01/19/1988 |
| 4533088 | Frozen coal cracker A machine for breaking frozen lumps of coal into smaller lumps includes a housing, a rotor which revolves within the housing and has teeth for engaging the coal, and a breaker plate which together with the rotor forms a converging space into which the rot... | 08/06/1985 |
| 4205795 | Material handling facility At a coal handling facility a reducing machine is mounted on a common carriage along with a by-pass chute, and this carriage is capable of moving either the reducing machine or the by-pass chute into a position directly beneath a receiving hopper. When th... | 06/03/1980 |
| 4149677 | Reinforced ring hammer A ring hammer for a reducing machine includes an annular body and tooth projected radially from the annular body and arranged in two rows, with the teeth of the one row being spaced axially from the teeth of the other row and further being offset circumfe... | 04/17/1979 |
| 4015783 | Reversible grate bar and support for crushers In a hammer mill or crusher for use in size reduction or even pulverizing rock, metals, or other materials, a rotating crusher and a contiguous surface are confined between opposing side walls and an inlet and discharge for the mill, with each side wall h... | 04/05/1977 |
| 4009836 | Material reducing machine A material reducing machine has a housing and a reversible rotor which revolves in the housing. On each side of the rotor the housing carries wear plates which pivot such that their lower ends will move inwardly, thus enabling the wear plate to serve as a... | 03/01/1977 |
| 4002302 | Reducing machine having a positively displaced grate The cage of a reducing machine is positioned within the machine housing below the rotor. One end of the cage is pivoted with respect to the machine housing, while the other end is suspended from chains which pass over sprockets so that when the sprockets ... | 01/11/1977 |
| 3934826 | Coal crusher The breaker plate of a coal crusher has holes therein so that coal small enough to pass through those holes does so without being acted upon by the rotor. This increases the capacity of the crusher, reduces fines, and conserves power. The plate is oriente... | 01/27/1976 |
| 3934499 | Scrap shredding system A shredding system for reducing automobiles and other large pieces of metal scrap to fragments includes a feed chute for receiving the scrap and a shredder to which the chute directs scrap. A track feeder is located above the chute for both crushing the s... | 01/27/1976 |
