Abstract: A cryogenic air separation system wherein feed air is compressed in a multistage primary air compressor, a first part is turboexpanded and fed into a cryogenic air separation plant, and a second part is turboexpanded and at least a portion of the turboexpanded second part is recycled to the primary air compressor at an interstage position.

Abstract: A hybrid system for producing both low purity oxygen and high purity nitrogen at high product recovery rates wherein desorption effluent from an adsorbent system feeds a cryogenic rectification column and, preferably, bottom fluid from the column provides additional feed for the adsorbent system.

Abstract: A method for producing low purity oxygen and high purity oxygen using a cryogenic rectification column wherein feed air is enriched in oxygen in an upstream adsorbent bed system prior to passage into the column and refrigeration is generated by turboexpansion of adsorbent bed effluent or column top vapor.

Abstract: A centralizing device comprising a plurality of blades and a pair of substantially cylindrical collars adapted to receive and carry the blades. Each collar is formed with at least two parts detachably and/or pivotally connected to each other, and each collar carries inwardly extending deformable metal fixing projections. Each end of each blade is bent substantially at right angles to a portion of the blade adjacent the end. When the blades are fitted so as to lie internally of the collars, each bent end fits into a slot in one of the collars and the projections are deformed so as to lie on the sides of the blade portions remote from the collars to thus fix the portions to the collars.

Abstract: A portable medical data strip chart recorder in which a drive roller for drawing the strip across a platen includes integral motive means for rotating the roller at a selected angular velocity. A D.C. motor is mounted internally and concentrically with the roller shaft which upon energization drives the roller and hence the strip paper at a desired linear velocity. The incorporation of a D.C. motor internally of the drive shaft permits reduction in size and weight of the recorder as well as achieving a more efficient drive power transmission.

Abstract: Mats of aligned fibers are formed by feeding a dispersion of fibers through an aligning nozzle onto the inner surface of a cylindrical permeable surface and rotating the surface sufficiently rapidly to remove the dispersion medium and maintain the fiber alignment on the surface.

Abstract: This disclosure describes 5 new antibacterial agents designated BM123.alpha., BM123.beta. .sub.1, BM123.beta..sub.2, BM123.gamma..sub.1, and BM123.gamma..sub.2 produced in a microbiological fermentation under controlled conditions using a new strain of an undetermined species of Nocardia and mutants thereof. The new antibacterial agents are active against a variety of microorganisms and thus are useful in inhibiting the growth of such bacteria wherever they may be found.

Abstract: The containment, splicing, or termination of the line is achieved by selective crimping along a housing. In a preferred form, the housing comprises a crimp barrel having a series of axially displaced apertures formed therein. A line, e.g. a wire, is inserted in the barrel, and a force is applied in registration with each aperture to deform the barrel and the line so that the deformed portion of the barrel maintains the deformed portion of the line against the aperture. The line scrapes against edges of the aperture to form a tight joint.

Abstract: Aligned fibre mats are produced by passing a continuously accelerating or decelerating stream of fibre dispersion over a permeable surface and simultaneously withdrawing a limited proportion of the dispersion liquid through the permeable surface to deposit aligned fibres thereon. Mats having a wide variety of shapes and alignment patterns may readily be produced and may subsequently be impregnated with resins, metals etc. to form fibre-reinforced composite materials.