Abstract: A sifter insert for the neck of a powder jar is secured above the product reservoir and below the cap of the jar. The insert has a central concave dish for supporting a quantity of powder product, and a channel around the perimeter of the dish. The insert is secured in the neck such that the dish is spaced below the bottom of the cap. Slots in the channel permit the flow of powder from the reservoir into the channel when the jar is inverted with the cap closed, and from the channel onto the dish when the inverted jar is righted. Powder in the dish is accessed by the user upon removal of the cap. The cap is then closed and the jar shaken to return excess powder from the dish to the reservoir through the slots in the channel.

Abstract: An oil and gas drilling installation having a drill rig with a bell nipple having an outlet at a predetermined elevation, a screening machine having a feeder and an angularly adjustable vibratory frame, a weir positioned between the feeder and the vibratory frame, the weir having an elevation which is lower than the predetermined elevation of the outlet of the bell nipple but immediately above the portion of the screen frame adjacent to the weir, and a downwardly inclined conduit between the bell nipple conduit and the feeder. A vibratory screening machine and feeder combination including an angularly adjustable vibratory frame on the vibratory screening machine, and a weir and flexible seal between the feeder and the vibratory frame at an elevation which is immediately above the portion of the vibratory frame which is adjacent to the weir.

Abstract: A media recovery hopper which lies on a floor permitting spent media and debris to be swept thereinto. The hopper, in the preferred embodiment, is a substantially rectangular box having one of its four side walls shorter than the rest. The media/debris is swept over this shorter side wall while the other walls collect and "queue" the mixture for recovery. The mixture falls through a screen and into a channeling mechanism composed of a series of ridges and valleys. Along each valley are drop-orifices which permit the media/debris mixture to fall therethrough and into an air-stream which carries the mixture to proper collection or sorting mechanism.

Abstract: A dust seal connector for accommodating the relative movement between the enclosed, moving screen box of a screening machine, and a fixed particle inlet or outlet conduit connected to the screen box. The relative movement occurs as sliding motion between a suspended flat slide plate and a wear ring below the slide plate, with which the plate is facially engaged. The plate is connected upwardly by an enclosed particle passage to the conduit or box member from which it is suspended, and communicates downwardly with an opening in the ring for the flow of particles. In a preferred embodiment the particles flow through an axially compressed corrugated sleeve which connects the plate to the member from which it is suspended, compression of the sleeve biasing the ring and plate together to maintain a sliding dust seal between them.

Abstract: A device for loading granular material containing some foreign matter into a container, such as a railroad car, has upper and lower chutes arranged in parallel. The upper chute has a bottom screen for allowing the foreign matter to fall through to the lower chute. The grain flow remaining on the upper chute is discharged down the center of the car and fills toward the sides, while the foreign matter falling to the lower chute is distributed evenly by sidewardly extending wings out toward the sides and in towards the center of the car. By the operation of the device, the foreign matter carried in the grain is evenly distributed and mixed throughout the car, and the tendency of the foreign matter to concentrate along the center under the hatchway of the car is prevented. A sample of the grain taken from the hatchway of the car thereby contains a truer percentage of foreign matter to grain than would occur by conventional loading devices.

Abstract: Apparatus for cleaning, aerating and fumigating grain comprises chutes having screens therein over which the grain is passed. Conduits interconnect the chutes with a blower mechanism so that the grain to be cleaned is subjected to a vacuum which causes the fine debris, trash and the like to be passed through the screen. The fine debris is entrained in a stream of air and directed exteriorly of the grain storage structure. The conduits connected to the blower assembly may be detached from the grain cleaning chutes and connected to tubes inserted into the grain to permit heated gases and moisture to be removed from the stored grain. An air entrained fumigant may also be directed through the tubes into the grain for controlling insects and the like.

Abstract: A sifter has a casing that is detachably coupled with a screen unit that also has a casing. A sifter handle is configured for detachable coupling to a conventional electric knife drive.

Abstract: A screening machine having an improved seal operable between the stationary inlet and outlet conduits of the machine and the movable inlet and outlet ports of the screen enclosure. The improved seal comprises a low friction slideable ring movable relative to a slide surface on one or the other of the conduit or the screen enclosure.