Abstract: A method of selectively illuminating a surface, such as a light-sensitive recording medium or an information record, provides a slit traveling transversely to a longitudinal dimension thereof and images light from a source of spatially concentrated light through the slit onto the above mentioned surface anamorphically only as to a dimension of the spatially concentrated light corresponding to the longitudinal dimension of the slit. Light is further spread from the source in a plane parallel to the transverse travel of the slit and is collimated, to be projected through the slit onto the above mentioned surface and for the extent of at least a portion of the transverse travel of the slit.

Abstract: Methods and apparatus for interconnecting a transducer body with a fluid-receiving transducer dome provide the transducer body with a radial shoulder, where an annular tightening member, rotatable relative to the transducer body, is also provided. An axial bias between the tightening member and the radial shoulder resiliently restrains the tightening member and the transducer body against movement away from each other. A groove for receiving a fastening member projecting either from the tightening member or the dome is provided at the dome or the tightening member. This groove is delimited with a stepped rigid tongue for retaining the fastening member therein. The dome and the transducer body are biased into fluid-tight engagement with the axial bias acting between the radial shoulder and the annular tightening member and acting on the dome through the projecting fastening member and rigid tongue.

Abstract: A matrix in a rotating rotor prevents or inhibits formation of waves in a liquid ring. The matrix may be located in first and/or second channel sections defined by the rotor, liquid passing from the first to the second channel section; and a turbine may have a scoop removing liquid from the second section, proximate ends of barriers defined by the matrix.The matrix includes grooves between the barriers to communicate liquid generally parallel to an axis defined by the rotor. The grooves have end openings and may be closed in a direction toward that axis.

Abstract: The invention contemplates a float-operated electrical switching system with two fluid-level indications and with provision for mechanical adjustment of the difference in elevation between the two indicating points. The switches are magnetically actuated in accordance with proximity of a permanent magnet carried by the float. The float is guided on an upright magnetically transparent tube which houses the switches, and for at least one of the switches mechanical adjustment of elevation within the tube is available via external access at the upper end of the tube.

Abstract: Elongate light gate structures are composed of a plurality of individual chips of electrooptically active light gate material displaying field induced birefringence. The individual chips are provided in rectangular configuration. Each chip has a plurality of alternating electrodes and elongate light gate regions distributed there along. A rigid mounting beam has a pair of spaced parallel elongate mounting surfaces for the light gate chips and an elongate opening located between and extending along these mounting surfaces for the flow of light to or from the mounted chips. The chips may be retained on the rigid beam by chip mounting clips. The chips may be located between polarizer and analyzer filters. Driver circuit boards may be interfaced with and appropriately leveled relative to the mounted chips.

Abstract: In a system wherein a fluid exhibits a regressive vapor dome in a T-S diagram, the following are provided:(a) a two-phase nozzle receiving the fluid in pressurized and heated liquid state and expanding the received liquid into saturated or superheated vapor state, and(b) apparatus receiving the saturated or superheated vapor to convert the kinetic energy thereof into power.

Abstract: The invention contemplates a self-contained unit wherein a continuous flow of contaminated liquid, such as steam-plant condensate recycled as feedwater, may be processed on an on-line basis through a replaceable demineralizing resin bed and through a replaceable filter cartridge. The disclosed configuration incorporates two cylindrical chambers within a single housing. Flow for demineralizing purposes is directed downwardly through the resin bed in the space between chambers, and the thus-demineralized flow is then directed upward through the filter cartridge in the inner chamber.

Abstract: The invention contemplates a check-valve construction which exhibits substantially elevated resistance to onset of unidirectional flow (i.e., to valve opening), as compared with conventional constructions. This elevated resistance to valve-opening is achieved through use of a knuckle joint, connecting the valve member to the valve body and spring-urged to its most-spread condition when the valve member is in its closed position. The invention is shown and described in connection with a check valve having two valve members, each of which derives materially enhanced resistance to valve-opening displacement, through use of a separate spring-loaded knuckle joint associated with each of the respective valve members.

Abstract: The present invention relates to an improved liquid-level indicator. The liquid-level indicator comprises an upstanding tube and a float arranged for vertical movement therein. This float is provided with a permanent magnet which is polarized in a horizontal plane and influences magnetically an array of display elements. These display elements are located outside of the tube. The display elements are rotatably supported and arranged in succession one above the other. Between the display elements and the tube there extends a magnetic strip arranged such that the permanent magnet of the float is oriented towards the display elements. This magnetic strip also pre-tensions the display elements. It is located outside of the tube and at a distance from the float.

Abstract: A multi-stage, wet steam turbine employs working fluid, such as steam for example, in its two-phase region with vapor and liquid occurring simultaneously for at least part of the cycle, in particular the nozzle expansion. A smaller number of stages than usual is made possible, and the turbine may handle liquid only. Simple construction, low fuel consumption and high reliability are achieved.

Abstract: The invention contemplates a technique and machine for completing the assembly of a turbine-rotor stage by precision-peening blade tenons to secure shroud segments to successive blades. In the machine, a turbine-rotor assembly of multiple stages of blades on a rotor shaft is mounted on a horizontal axis, with provision for indexing successive blade tenons of a given-stage into precise horizontal confrontation with tool elements successively presented to the tenon, the tool elements being independently mounted to a compound-axis slide system. A presser foot carried by the slide system locally holds the shroud segment to a seated position against the blade to be secured, while first an induction-heating element and then a riveting tool perform in programmed sequence upon the exposed end of the involved tenon.

Abstract: The invention contemplates a continuously circulating pumped flow of diesel-engine fuel, involving thermodynamic coupling to the engine's coolant-circulation system (a) while the engine is operating and (b) involving selectively available thermodynamic coupling to an externally supplied electric-heater element during periods of engine shut-down. To assure fuel circulation during such operation of the heater element, a rectifier taps the external electric supply to provide pump excitation and thus not to drain the charge on the storage battery associated with the engine.

Abstract: The invention contemplates tube-clamp structure wherein a split wear sleeve is applied to a metal tube with such resistance to displacement along the tube that displacement wear is accommodated essentially only via the lesser displacement resistance which characterizes a limited axial range of support-clamp engagement around the sleeve. More particularly, the split sleeve has a bonded lining of friction material which contains heat-curable adhesive--so that in a sufficiently elevated ambient temperature environment, as in the vicinity of an aircraft engine, the sleeve will bond to the metal tube; and so that in a lesser ambient-temperature environment, as within an aircraft wing which is subject to flexure, the sleeve will not bond to the metal tube but rather will be displaceable on the metal tube only for such unusual situations of axial play as the clamp-to-sleeve engagement will not accommodate.

Abstract: The invention contemplates support structure for a conduit or the like wherein one of two cylindrically arcuate metal band parts incorporates mounting-bracket or foot structure and the other such part has articulated connection to one, and releasably tensed connection to the other, of the ends of the bracket-carrying cylindrically arcuate part. A liner of flexible resilient material extends circumferentially continuously within the metal-band parts between the releasably connected ends thereof. The releasably tensed connection includes an over-center latch and a redundant safety latch, and in each of the disclosed embodiments mounting-foot structure is integrally formed with one of the metal-band parts.

Abstract: A method of welding which utilizes a metal electrode core encased within a pre-sintered ceramic insulating sleeve. The method comprising, preplacing a welding wire in the welding kerf formed between the pieces to be welded, tacking the welding wire in place such that the wire abuts the surface of the pieces to be welded, guiding the metal core electrode rod encased in a ceramic pre-sintered sleeve over the welding wire, and simultaneously, torching the welding wire so that a uniform weld deposit is formed.

Abstract: The invention contemplates a check-valve construction wherein a plurality of at least three generally triangular valve members are independently hinged to the respective base lines of a pyramidal seat configuration, the base lines being in a plane which essentially establishes the upstream end of the valve, and the apex of the pyramid (and, thus, the apex of each valve-member triangle) essentially establishes the downstream end of the valve.

Abstract: The invention contemplates a continuously circulating pumped flow of diesel-engine fuel, involving thermodynamic coupling to the engine's coolant-circulation system (a) while the engine is operating and (b) involving selectively available thermodynamic coupling to an externally supplied electric-heater element during periods of engine shut-down. To assure fuel circulation during such operation of the heater element, a rectifier taps the external electric supply to provide pump excitation and thus not to drain the charge on the storage battery associated with the engine.

Abstract: The invention in a preferred form contemplates a valve-like structure adapted for series-connection in a pipe or other conduit line and having a valve member which is caused, within the constraint of a rectilineal guide, to change its longitudinal position as a substantially linear function of the change of fluid-flow rate in the pipe or conduit; and an inductive device tracks the position of the valve member to produce an electrical output signal which is also a substantially linear function of the fluid-flow rate. The description includes unidirectional embodiments (with check-valve action for flow in the non-metering direction), and a bi-directional embodiment.

Abstract: The invention contemplates a valve having particular application to the control of flow and pressure within a sanitary-sewer system which includes independently pumped feeders at elevations below an intervening region of greater elevation. The valve, located at the downstream side of the region, of greater elevation, and below the elevation of pumping on the upstream side of the region of greater elevation, provides (a) such a minimum level of pressure at its inlet as to assure against syphoning liquid sewage out of the greater-elevation region, (b) a reduction in hydraulic-head pressure for liquid sewage passed by the valve to the succeeding downstream region of lower elevation, and (c) such balanced response to excessive downstream-region pressure development as to prevent any development of upstream flow through the valve, i.e., such balanced response as to prevent changes in upstream pressure level with fluctuating downstream pressure level.

Abstract: An improved pressure seal assembly for rotary machinery. The assembly utilizes a buffer oil flowing through a seal ring surrounding the rotating shaft of the machinery. The seal ring includes a plurality of openings about its periphery to pass the oil through the ring to a number of bearing pads. The oil serves to cool, lubricate, seal and damp the seal ring. The assembly reduces oil loss to the pressurized environment to a minimum.