Abstract: A raise bit (10) is constructed with a plurality of housings (30) secured to cutter carrier frame (14) and disposed about drive stem (12). Housings (30) include a rectangularly-shaped mounting box (48) for rotatably supporting an outboard roller cutter (28). Each housing (30) also includes an upright wall (34) having an upwardly tapered lug (40) extending along the upper edge portion thereof for seating within a correspondingly shaped groove (82) formed along the underside of shoulder section (78) of an L-shaped hanger bracket (68). A roller shell (72) is antifrictionally mounted on a spindle (70) extending outwardly from an upright section (76) of hanger bracket (68). Bracket (68) is held in hooked relationship over lug (40) by a pair of capscrews (74) extending downwardly through clearance holes formed in upright section (76) and engaging within a lower portion of upright wall (34).

Abstract: In an air-gap dynamoelectric machine, relative movement between insulation on a winding conductor disposed in the air-gap and the adjacent surface of a channel in which a winding conductor is supported can give rise to shear stresses imposed on the insulation. The present invention provides an envelope between the insulation and the channel surface to reduce any shear stresses on the insulation. The envelope provides interior major, confronting surfaces, slidable with respect to each other, and which are not subject to contamination by thermosetting resin applied to parts of the dynamoelectric machine during manufacturing thereof.

Abstract: In a dynamoelectric machine having armature conductors located in the air-gap separating rotor and stator, the conductors are secured to the stator structure. Conductor fastening means are provided which maintain the armature conductors and their support members in compression in all modes of operation of the machine.

Abstract: An apparatus for supporting a stator winding in a superconductive generator. The apparatus includes a plurality of integral stator bars positioned in the air-gap between the yoke and the rotor and a plurality of non-conductive supporting teeth interspaced between the stator bars. The supporting teeth are rigidly attached to the yoke of the generator and are engaged by a plurality of wedge members. The wedge members and the supporting teeth secure the stator bars in a rigid supporting arch.

Abstract: An improved method of thin layer chromatography and articles are provided for the detection of drugs involving extraction, concentration, transfer to a disc, development and detection. The method employs lipophilic dye containing disc shaped inserts impregnated with analytes or one or more standards. The discs are inserted in corresponding hollows on a thin layer chromatographic plate and eluted with a suitable solvent. As the solvent migrates, the dye is eluted from the disc and migrates as a spot with the solvent front which is thus visually developed with the dye.

Abstract: A centrifugal air classifying apparatus for use with a cyclone type centrifugal separator and a fan for drawing air from the separator and returning it at superatmospheric pressure to the classifying apparatus, wherein the classifying apparatus has a rotary particle rejector in its upper portion for classifying material fed into a rising and rotating column of air outwardly surrounding the rejector. A first primary annular sealing zone is provided adjacent the tops of the rejector blades and a secondary annular sealing ring is provided at an intermediate location between the upper and lower ends of the blades.

Abstract: A simplified method of carrying out thin-layer chromatography for the detection of drugs. Neutral, basic amine-containing, and acidic drugs are extracted from a physiological medium with a salt-organic solvent system. The organic phase is then transferred incrementally to a small dish having a small adsorbent disc, with the organic solvent system evaporated between the incremental additions. When the organic extractant is substantially completely evaporated, the disc is then introduced into an available opening adjacent one end of a thin-layer chromatograph. The chromatograph is then developed employing a developing solution. After drying the chromatograph, the chromatograph is subjected to specific reagent treatment and developing processes, involving dipping, rather than spraying, to color the various spots and make them visible. In this manner, a physiological sample can be rapidly treated and the presence of a drug determined in accordance with its migration and coloration under reagent treatment.