The disclosure is of a seal to be used in a well immediately above a pump and at or below the normal level of the water in the well casing to prevent the movement of water and air downwardly past the seal into the area of the pump. The seal is designed to permit the necessary service connections to be passed through it and then adjusted to tightly seal about these connections before installation of the seal in the well.

A vehicular wheel assembly includes a tire comprising circumferentially spaced segments each including a vacuum port. A plurality of valving assemblies are mounted within the tire for actuation upon inward deflection of the tire to connect a vacuum source to each vacuum port when the segment of the tire incorporating the vacuum port is in engagement with a surface. By this means a partial vacuum is maintained between the contact area of the tire and the surface whereby traction between the tire ...

A substantially vertical fracture in a well formation is partially filled to prevent healing of the fracture, and the unfilled portion of the fracture is utilized for production flow.

Apparatus for stepping up the speed of the power takeoff on food preparing machines to obtain better performance from attachments for such machines, such as food slicers. A large diameter internally toothed gear is driven by the food machine power takeoff and in turn drives a small diameter gear mounted on a shaft which provides a high speed power takeoff for the attachment. A protuberance is formed on the body of the speed increaser adjacent the point of connection of an attachment thereto whic...

A vehicle traction-increasing apparatus for creating subambient pressure beneath the vehicle to place a load on the vehicle and increase the traction between the driving wheels of the vehicle and the road surface. The air induction system of the vehicle driving engine is connected to a housing located beneath the vehicle. The bottom portion of the housing is open and applied to the road surface. A flexible curtain is connected to the housing about its open side and is urged downwardly toward the...

In railway transportation facilities and the like having a rail track system and a running system running on the rail track by means of running wheels, a system for increasing the axle load having a plurality of magnetic poles disposed in one of the two systems for producing magnetic flux, and a magnetic material disposed in the other system for producing an attractive force between the two systems by the action of the magnetic flux and a braking effort by the transfer movement of the magnetic f...

A composition which increases the yield of pulse, comprising an effective amount of at least one component selected from the group consisting of a sulfonate represented by the formula wherein R.sup.1 represents alkyl or alkenyl of 8 to 20 carbon atoms or the residue of succinic acid esters represented by the formula, ##STR1## wherein R.sup.2 and R.sup.3 represent alkyl of 1 to 18 carbon atoms or alkylaryl containing an alkyl group of 1 to 18 carbon atoms and M represents an organic or inorganic ...

Antibiotic A-28086 complex, comprising microbiologically active, structurally related factors A, B, and D, produced by submerged aerobic fermentation of Streptomyces aureofaciens NRRL 5758. Individual factors A, B, and D are separated and isolated by chromatography. The A-28086 antibiotics are antibacterial, antifungal, antiviral, anti-PPLO, anticoccidial, insecticidal and acaricidal agents and also increase feed-utilization efficiency in ruminants.

Human serum prealbumin is shown to possess thymus hormone-like properties of increasing immunologic competence. Pharmaceutical compositions containing this material, useful for increasing immunologic competence, are described.

A method of increasing the yield of a fermentation process comprises adding a water-soluble carotenoid to the nutrient medium.