Abstract: Copper trolley wire consisting essentially of at least 99.90% copper and at most 0.10% of a metal selected from the group consisting of silver, cadmium, tellurium, titanium, magnesium, manganese, chromium, zirconium, tin and combinations thereof, has a minimum tensile strength well exceeding that listed in ASTM Standard B47-95a for copper trolley wire. The copper trolley wire has a uniform fine grain size. The copper trolley wire is manufactured using a process of casting a copper rod of the appropriate composition, hot working or “conforming” the cast rod to reduce its diameter, and then cold working it to form the desired wire by drawing it through one or more dies. Preferably, no annealing step is used.

Abstract: Copper trolley wire consisting essentially of at least 99.90% copper and at most 0.10% of a metal selected from the group consisting of silver, cadmium, tellurium, titanium, magnesium, manganese, chromium, zirconium, tin and combinations thereof, has a minimum tensile strength well exceeding that listed in ASTM Standard B47-95a for copper trolley wire. The copper trolley wire has a uniform fine grain size. The copper trolley wire is manufactured using a process of casting a copper rod of the appropriate composition, hot working or "conforming" the cast rod to reduce its diameter, and then cold working it to form the desired wire by drawing it through one or more dies. Preferably, no annealing step is used.

Abstract: Difficulties in cooling the vanes or blades (46) making up a turbine nozzle (40) in a gas turbine may be minimized or eliminated by placing interior passages (62) of the blades or vanes (46) in fluid communication with the compressor (14) and providing outlet passages (64) for the passages (62) in the rear turbine shroud (42). The passages (64) are preferably angled so that their downstream ends (68) open downstream. Consequently, eductor or ejector-like formations are present and when cooling air for a combustor (30) flowing in a cooling air path (28) passes across the ends (68), a region of lower pressure is formed to positively assure the flow of cooling air through the vanes or blades (46).