Abstract: A method and apparatus for adding minute quantities of radioactive material to frac material, acid material, cement squeezes, or the like, being pumped underground which includes providing a filler material or carrier having a minor portion of radioactive material distributed evenly therethrough, providing a lead shielded container having a variable volume chamber for the filler having the radioactive material and progressively decreasing the chamber volume at a predetermined rate to meter outflow of the filler with radioactive material from the container and into the line carrying the material being pumped underground. The rate of metering is such as to provide the desired concentration of radioactive material relative to the flow rate of material being pumped underground. The filler with the radioactive material is preferrably a solid plug and a grinder is used to progressively grind material at a selected rate from the leading end of the plug into particles of selected size.

Abstract: An impact crushing machine provided with easily repairable strikers fixedly arranged along the circumference of a rotor at regular angular intervals so as to extend radially of the rotor. A plurality of seats fixedly mounted respectively with striking chips formed of a durable hard material such as a hard metal are arranged in lines and rows on and detachably fixed to the radially outer end of the striker for individual replacement. When the striking chip is abraded to an unusable extent, the seat mounted with the worn striking chip and a seat fixedly mounted with an unworn striking chip can be interchanged for the further use of the striker, so that the frequency of replacing the heavy striker with a new one is reduced and the operating cost of the impact crushing machine is reduced.

Abstract: A machine for densifying plastic containers, such as recyclable FET bottles, includes a feeder and a shredder. The feeder includes a paddle wheel with radial vanes for feeding the containers into the inlet of the shredder and blocking their return. A scraper is provided adjacent the outlet of the feeder for dislodging any material wedged in the pocket formed between adjacent vanes and preventing its return into the inlet of the feeder. The shredder includes intermeshing rotary shredder elements and stationary shredder elements, the cutting surfaces of which slope with respect to each other to provide a scissoring action. In a preferred form, each rotary shredder element includes a sharpened outer tip which projects in the direction of rotation for starting a tear in the container undergoing reduction. Each stationary shredder element also includes a sharpened outer tip which projects opposite the direction of rotation for retaining larger pieces of material in the shredder for further shredding.

Abstract: A method of producing a particulate sterile material insulation or fertilizer, includes the step of comminuting a cellulose feed material such as paper, in a hammer mill so as to produce fine particles and fibres having a large surface area to volume ratio. The particulate material is entrained in an air stream to produce separate particles of the material, and the particulate material freely falls through an ultraviolet radiation flux for a period of time sufficient to substantially completely sterilize the particulate material. The product can be used in animal breeding sheds as floor insulation. The used material with animal droppings can be similarly processed to produce a sterile particulate fertilizer ingredient.

Abstract: A device and method for positioning an outer embroidery hoop on a framing table includes a hoop attachment having a hoop receiver which is adjustably mounted on a framing table. The hoop receiver can be released and slid along the upper table top surface and rotated as desired for infinite positioning. A side hoop attachment is also provided for jacket hoops and the framing table top can be removed and replaced with smaller or larger table tops as needed.

Abstract: A method of preparing wastepaper for fiberization comprising: (a) shredding the wastepaper in a screened shredding device, through which the wastepaper is drawn by a fan; (b) passing the resulting shredded-and-screened wastepaper through the fan, wherein wadded-up pieces of wastepaper which passed through said screen are opened up; and (c) screening out opened-up pieces of wastepaper.

Abstract: Municipal waste materials are processed by crushing the materials so that pieces of noncombustible material are smaller than a selected size and pieces of combustible material are larger than the selected size. The crushed materials are placed on a vibrating mesh screen conveyor belt having openings which pass the smaller, noncombustible pieces of material, but do not pass the larger, combustible pieces of material. Consecutive conveyors may be connected by an intermediate vibratory plate. An air knife can be used to further separate materials based on weight.

Abstract: Method and apparatus for recovering glass from old glass by continuously feeding the old glass onto an open, continuously running conveyor system by segregating nonglass impurities and by mechanically crushing old glass in a breaking apparatus. To facilitate visual inspection and concentrating the size range of the shards, a sorting of the old glass into two fractions of different piece sizes is performed in a separating apparatus prior to the manual sorting and before crushing. Exclusively the old glass of the at least one coarser fraction ("coarse glass") is fed, after the segregation of at least a portion of the nonglass impurities, to the breaking apparatus. Then the old glass of this fraction, crushed to the desired shard size, is freed of remaining impurities and finally fed to a place of storage for good glass.

Abstract: This invention discloses disposable infusion delivery systems, in each of which fluid is drawn into a receiving and retaining housing and a piston is slideable in said housing. As the piston is moved away from a discharge end of the housing, at least one elastomeric member is stretched, with the stored fluid ahead of said piston discharged from said housing by the force developed by said stretched elastomeric member. This stored fluid provides a continuous flow of fluid to a patient. There are three arrangements shown. The first enables additive drugs to be infused into a fluid stream without purging. The second shows a syringe adapted to provide the disposable infusion device, and the third provides a fluid stream to and through a pressure transducer, enabling monitoring of blood pulses with minimum distortion.

Abstract: A ball tube mill includes a rotatable housing with a lined inside surface and end cover plates having an inlet hole and an outlet hole and accommodating at an angle to its longitudinal axis at least one perforated wall dividing the housing into coarse and fine grinding chambers charged with grinding bodies. The lined inside surface of the chambers has the form of truncated cones facing by their large bases the perforated wall, the angle of inclination of a generating line of the truncated cones equalling the angle of the slope of the grinding bodies present in the respective chamber, the volume of the coarse grinding chamber being smaller than the volume of the fine grinding chamber.

Abstract: The present invention relates to composite absorbent structures suitable for incorporation into absorbent articles such as sanitary napkins, diapers, incontinent devices, training pants and the like. Such structures comprise webs of entangled blown microfibers, substantially nonabsorbent crimped staple fibers, a fluid control system comprising hydrophilic particulate entities and also optionally containing certain types of hydrogel-forming polymeric gelling agent particles, and a hydrophilizing agent. Such composite web structures of this construction have especially desirable comfort, integrity and fluid handling characteristics.

Abstract: An asphalt recycling conveyor system has a substantially horizontal collecting trough for receiving returned, unused hot mix asphalt. Deflecting plates are provided at the back and ends of this trough, and spaced guard rails extend across it. Asphalt is moved in the trough by an auger having standard pitch to a hopper at one end of the trough. Asphalt lump breaking rods extend from the auger shaft above the hopper to prevent these lumps from bridging the hopper opening. An elevating trough may receive the asphalt from the collection trough hopper and carry it to a higher elevation. The elevating trough has an auger having one-half standard pitch and is turned at a faster speed than the collection trough auger. Heat trace lines are provided on the bottom of the troughs to prevent asphalt buildup.

Abstract: A quick release grinding assembly is incorporated in a condiment grinder mill. A base receives and stores condiment pieces such as peppercorns. A head is mounted on the base for rotation relative to the base. An elongate shaft extends through the head and base and the shaft is secured to the head for rotation relative to the base. The grinding mechanism includes a grinder cone attached to the end of the shaft and a grinder ring mounted in the end of the base. A support ring is formed with an outer perimeter or ring secured to the base and a flexing inner perimeter or ring of flexible deformable material receives and centers the shaft. The inner rim deformable material has an initial configuration and memory for return to the original configuration after flexing deformation. The shaft is formed with projecting ears arranged to be forcibly passable through the inner rim of the support ring by flexing deformation of the inner rim for quick release disassembly and assembly of the grinding mechanism.

Abstract: A dispensing device is disclosed for delivering a beneficial agent. The device comprises (1) a housing defining an internal space, (2) an expandable composition in the space, (3) an aqueous sensitive beneficial agent formulation in the space, and (4) at least one passageway in the housing for delivering the beneficial agent from the dispensing device.

Abstract: For removing foreign solids, for instance contaminants, from pulpers in which waste paper, in particular with a share of more than five percent, for instance more than ten percent, of solids foreign to paper, is pulped or suspended and the suspension or slurry is the withdrawn through a screen zone for further processing, it is proposed according to the invention to at least partially withdraw the suspension or slurry from the pulper in periodic time intervals and, subsequent to the, in particular each, partial withdrawal of the suspension or slurry, to loosen, hydrodynamically or by means of fluids, the foreign solids accumulated on one side, in particular the upper side, of the screen zone, whereupon the dirt slurry obtained by hydrodynamical loosening is fully mechanically discharged from the pulper prior to newly charging the pulper. The hydrodynamical loosening of the foreign solids is preferably effected under backflushing through the screen zone.

Abstract: A dosage form is disclosed comprising a wall surrounding a compartment housing a first layer comprising a drug formulation, a middle layer comprising a hydrophobic composition, and a third layer comprising a hydrophilic composition.

Abstract: It is known that antibiotics, particularly gentamycine, are released with delay from plastic materials such as polymethacrylate and/or polyacrylate. Thereby, a steep initial decrease in concentration long periods of time. These antibiotic-containing synthetic materials have been used heretofore as bone cement, for the fastening of endoprostheses or in the, for instance of total endoprostheses of the hip or in the replacement of infected endoprostheses. To combat and prevent infection, the antibiotics are added prior to the polymerization of the synthetic material. The invention has the object to create. In accordance with the invention, it is the carrier (2) be shaped like a stick. The carrier (2) can also have the shape of a cylinder, with a central passage duct (4) provided in its longitudinal direction. The carrier (2) is provided with a plurality of radial openings (3), which communicate with a central passage duct (4).

Abstract: An assembly station is provided for use in the assembly of disk drive units of the type used in microcomputers, such as personal computers and the like. The assembly station comprises a main platform having a head fixture and a disk fixture for respectively receiving and supporting a head actuator subassembly and a disk subassembly of a disk drive unit. The disk fixture supports the disk subassembly for sliding displacement into precision registry with the actuator subassembly to accommodate facilitated mounting of a housing base onto the actuator and disk subassemblies. In the preferred form of the invention, the assembly station is further adapted to receive and support additional disk drive components for mounting within the housing base. The platform is adapted for inversion to expose these additional disk drive components through platform openings for relatively simple attachment to the housing base at predetermined positions.

Abstract: A process and apparatus for the low temperature comminution of tires includes the separation of the tires into tire portions including tread portions, sidewall portions and bead portions. The tire portions are cooled and crushed to form rubber granules and scrap material. The rubber granules are sorted from the scrap material in a process that includes the step of suspending the granules in a moving stream of low temperature gas. The stream of gas and rubber granules is impacted on a solid surface to grind the granules. The low temperature gas is preferably recycled and cooled by heat exchange with another circulating low temperature gas such as nitrogen.

Abstract: A catheter assembly is provided to facilitate taping of the emplaced catheter onto the patient's body. The assembly comprises a catheter extending distally from a catheter hub. The hub has a hub axis co-axially aligned with the catheter and provided with a pair of opposed wings integral with the hub. Each of the wings having a proximal edge and a distal edge are such that a portion of at least one of these edges forms an acute angle with the axis of the hub of from about 35.degree. to about 55.degree. whereby the taping operation of the wings to the patient's body may be facilitated.