Abstract: An apparatus for assisting in loading material to be ground into a rotatable drum assembly and protecting the rotating means of the assembly. A stationary drum assembly having a frustoconical stationary sidewall is configured to aid in feeding material into the rotatable drum space attached to a frame suspended over the rotating drum space. The stationary sidewall has a smaller diameter end adjacent to the rotatable drum assembly, and a large diameter end positioned atop the rotatable drum. Whereby when material is loaded into the large diameter end of the frustoconical stationary sidewall, the material passes through the stationary sidewall into a drum space where material is contacted by the grinding means and ground into pieces.

Abstract: An improved grinding apparatus or hammermill utilizing retractable bars as a hammermill screen, or as a support to a conventional hammermill screen. The ability to retract these bars which make up the screen of the hammermill assembly reduces the down time associated with inspecting, replacing, and repairing the bars, and clearing jammed material caught within the screen. When the retractable bars support a hammermill screen, retraction of the bars allows the screen to drop down from the hammermill for repair and cleaning.

Abstract: An improved hammermill assembly utilizing shear bolts and shear plates designed to break upon extreme loads exerted upon the hammermill assembly, thereby reducing the occurrence of damage to the hammermill assembly or attached equipment.

Abstract: An improved hammermill assembly utilizing shear bolts and shear plates designed to break upon extreme loads exerted upon the hammermill assembly, thereby reducing the occurrence of damage to the hammermill assembly or attached equipment.

Abstract: An apparatus for assisting in loading material to be ground into a rotatable drum assembly and protecting the rotating means of the assembly. A stationary drum assembly having a frustoconical stationary sidewall is configured to aid in feeding material into the rotatable drum space attached to a frame suspended over the rotating drum space. The stationary sidewall has a smaller diameter end adjacent to the rotatable drum assembly, and a large diameter end positioned atop the rotatable drum. Whereby when material is loaded into the large diameter end of the frustoconical stationary sidewall, the material passes through the stationary sidewall into a drum space where material is contacted by the grinding means and ground into pieces.

Abstract: An improved grinding apparatus or hammermill utilizing retractable bars as a hammermill screen, or as a support to a conventional hammermill screen. The ability to retract these bars which make up the screen of the hammermill assembly reduces the down time associated with inspecting, replacing, and repairing the bars, and clearing jammed material caught within the screen. When the retractable bars support a hammermill screen, retraction of the bars allows the screen to drop down from the hammermill for repair and cleaning.

Abstract: An improved hammermill hammer is provided wherein the hammer body has an interlocking slot, to receive one of a pair of retaining rods, and a rod hole through which a second rod is interfitted to lock the hammer securely to the hammermill rotor.

Abstract: A transportable trommel assembly is provided with a frame, a cylindrical trommel screen, having an infeed end and a discharge end rotatably mounted to the frame, and conveyors for carrying away sized material from the trommel screen. An infeed conveyor is movably connected to the frame and positionable to an operating position for infeeding material into the infeed end of the trommel screen and to a transport position where it is held within the infeed end of the trommel screen.

Abstract: A covered rotating drum grinding machine having a frame, engine assembly and hammermill assembly mounted to the frame is provided. Sitting atop of the hammermill assembly is a rotating drum assembly, which is used to agitate and feed material to be ground into the hammermill assembly. A stationary drum assembly, including an infeed opening through which material to be ground is passed, is provided atop the rotating drum assembly to prevent material impacting the hammermill or other grinding device from being propelled out of the enclosed drum space on a ballistic trajectory.

Abstract: A transportable conveyor system for use primarily with a pivot tub type hammermill having a frame, a conveyor means installed within the frame, for transporting the material to be ground or pulverized to the hammermill, sideboards or rails located on either side of the lower end of the conveyor frame for containing the material to be ground or pulverized on the conveyor means, a fixed shroud located at the upper end of the conveyor frame assembly extending upward from the frame and across the top of the conveyor means creating an enclosure through which the material to be ground or pulverized travels, an extendable shroud which is mounted on a pair of trolleys, one trolley mounted on either side of the conveyor frame assembly, each trolley traveling on a pair of wheels which in turn travel in a track attached to the sides of the conveyor frame assembly, the conveyor system having means for driving the trolley wheels along the track causing the extendable shroud to extend beyond the end of the conveyor frame a

Abstract: Grinding apparatus of the pivotal tub type with means for conveying ground material, said apparatus including a wheel mounted chassis; a tub, mounted on the chassis for receiving material to be ground, said tub provided with a rotatable side wall and a non-rotatable floor, and said tub being pivotal in a direction transverse to the direction of normal movement of the chassis; a grinder extending upwardly through an aperture in the floor to engage material within the tub; a bin for receiving ground material; and a conveyor system extendible rearwardly from the normal direction of movement of the chassis and foldable over the tub for compactness during transportation from site to site. The side pivoting tub, in combination with the extendible and foldable conveyor make the apparatus practical for movement on the highways. A deflector, mounted on the floor of the tub, lessens recirculation of ground material and prevents potentially dangerous material from flying from the tub in its engagement with the grinder.