A method of removing blades from the rotor of a turbo machine, such as a steam or gas turbine, in which material deposits formed between the surfaces of the blade root and its retaining groove have effectively bonded the blade root to the rotor groove. The blade root and groove are submersed in a liquid medium enclosed in a tank. Transducers installed on the tank radiate ultrasonic pressure waves into the liquid medium that breakup the material deposits through cavitation, thereby loosing the bo...

A sub-sea pumping system for pumping an effluent from a deep-sea wellhead comprising a topside module, a sub-sea module, and an umbilical connection between the topside and sub-sea modules. The umbilical connection comprises a threephase electrical power line and an hydraulic fluid supply line to an electrical canned motor. The hydraulic fluid is a single medium fluid, is compatible with the effluent being pumped, and is circulated through the sub-sea module for cooling and for lubricating the s...

A circuit breaker operating mechanism is provided having a frame mountable upon the face of a circuit breaker. A saddle assembly engages the operating handle of the circuit breaker and is slideably attached to the frame. A pair of solenoids are transversely mounted at opposite ends of the frame and are linked to the saddle assembly by two pairs of core and lever arm assemblies making lost motion connections to the saddle assembly. Energization of either solenoid applies force through the core an...

A refrigeration system having at least one unloadable compressing apparatus and at least one always loaded compressing apparatus is provided with separate gas discharge lines connected to respectively separate condenser coil surfaces, and a valve arrangement is provided in those discharge lines connected to the unloadable compressing apparatus for closing those lines in response to an unloaded condition of the particular compressing apparatus serving the lines. The system has condenser coil surf...

An axial flow gas turbine has inner and outer casings. Arrays of stationary integral vane segments and adjacent arcuate blade ring segments are supported inwardly from and interlocked with the inner casing by arcuate segmented support members. The arcuate support members are fixedly attached to the inner casing by an arrangement of interlocking plates and bolts in registration with said support members. This arrangement not only permits thermal expansion and contraction between adjacent members ...

An iron base alloy is described which contains low amounts of alloying elements and is suitable for use as a transformer core material. The alloy is characterized by a (110) [001] texture, and a primary recrystallized and normal grain growth microstructure. The process for obtaining the oriented structure is either a two stage or a three stage process in which the final cold reduction effects only a moderate reduction in cross-sectional area to finish gauge. In all cases the alloy is subjected t...

An electrostatically deflectable light valve adapted for use in an array for producing television pictures as a projected image upon a large display screen. The light valve structure is such that a plurality of reflective wing portions are free to be deflected along directional axes which are at an angle to the prime directional axes of the overall array, so that light which is predominantly diffracted along the array axes may be decoupled or separated from the signal light produced by activated...

A light activated thyristor with high dI/dt capability is provided by disposing first and second thyristors, one a primary and one a pilot thyristor, in a semiconductor body having first and second major surfaces. The two thristors have common cathode-base, anode-base and anode-emitter regions, and have spaced apart cathode-emitter regions adjoining the first major surface of the body. The common cathode-base region adjoins the first major surface between the two thyristors as well as intermitte...

To provide a more favorable undersea trajectory for missiles launched from a moving submarine the nose portion has a detachable cambered overlay axisymmetrically disposed at an angle of approximately 9.degree. with respect to axis of the missile.

Electrical connector having a longitudinal contact, an arc-extinguishing rod attached thereto, and an arc-extinguishing sleeve through which the contact and the rod extend. Permanent magnets surround the sleeve and create a magnetic field between the sleeve and the arc-extinguishing rod to force around the rod, any arc contained in the field. A magnetic core member within the arc-extinguishing rod helps provide the desired magnetic field pattern.