Abstract: A device for reclaiming material, such as used wet ready mixed concrete, having a hopper for receiving the used concrete into a excess of water and floating the suspended cement particles out through a weired overflow for further reclamation while the solid sand and aggregate is augured from the bottom of the hopper for further washing and separation into sand and aggregate for reuse.

Abstract: Apparatus for fabricating chip boards or fiber boards of cellulosic material, includes a press, and a press form station arranged upstream of the press and having a storage bin for retaining a material in the form of chips or fibers and a conveyor belt arrangement extending from an outlet end of the storage bin to a receiving end of the press, with the conveyor belt arrangement including a first section forming a vertical, funnel-shaped compaction zone aNd a second arcuate section arranged downstream of the first section for deflecting the material along a curved path from a vertical disposition into a horizontal disposition.

Abstract: A centrifuge for dewatering a fluent aggregate material such as sand. Sand slurry is conducted into a rotating cylindrical drum which has a perforated lateral wall against which a screen is placed. The drum is oriented with the axis disposed vertically. When the centrifuge operates, centrifugal action slings slurry poured into the drum outwardly. Upon contacting the lateral wall, the slurry builds up. When a certain quantity of the slurry has built up at the bottom or floor of the cylinder, additional material cannot resist migrating upwardly. Thickness of the trapped layer varies, being greater at the floor, near the source of the incoming slurry. This trapped layer forms a bed having an inclined wall. Thickness of the bed at the top of the cylinder is determined by a circumferential, inwardly projecting flange or dam located at the top of the cylindrical drum. The sand bed protects metal parts of the centrifuge from abrasion, and also enables water to diffuse therethrough.

Abstract: A centrifugal separator has a separation chamber housing split into mating, unhinged clamshell sections. One clamshell section includes a pipe extending through the other clamshell section. The separation chamber rotates about the axis of the pipe. A spring secured to the frame of the separator surrounds the pipe, bearing against the second aforementioned clamshell section. This spring yieldingly opposes separation. The pipe and axis of rotation are oriented vertically. The pipe is divided into an upper inlet section and a lower outlet section by a flange or baffle. In alternative embodiments, the inlet pipe is fixed to different components, namely, one clamshell section, the other clamshell section, or to the frame of the machine. A slurry is introduced into the pipe inlet section, falls due to gravity, strikes the baffle, and exits the pipe through holes formed in the wall. The baffle redirects incoming slurry radially, so that when the separator is operated, centrifugal forces immediately act thereon.