. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . swing centerbearing. Trailing truck—Radial, outside jour-nal. Exhaust pipe—Single; nozzles, 5 15 61/16 ins., 6 3/16. *Grate—Style, rocking. *Piston—Rod diameter, 4H ins.; pis-ton packing, gun iron ring. Smoke stack—Diameter, 20 ins.; topabove rail. 14 ft. 9l/2 ins. Tender frame—Ry. built-up. Tank—Style, water bottom; capacity,9,500 gallons; capacity fuel, 14 tons. Valves—Type, piston; travel, 6 ins.;steam lap, 1 in.; exhaust cl., l/% in.; set-ting, 3/16 in. [1 \ aln ady stated th
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . swing centerbearing. Trailing truck—Radial, outside jour-nal. Exhaust pipe—Single; nozzles, 5 15 61/16 ins., 6 3/16. *Grate—Style, rocking. *Piston—Rod diameter, 4H ins.; pis-ton packing, gun iron ring. Smoke stack—Diameter, 20 ins.; topabove rail. 14 ft. 9l/2 ins. Tender frame—Ry. built-up. Tank—Style, water bottom; capacity,9,500 gallons; capacity fuel, 14 tons. Valves—Type, piston; travel, 6 ins.;steam lap, 1 in.; exhaust cl., l/% in.; set-ting, 3/16 in. [1 \ aln ady stated this type of li a imotive is equipped with the latest type ofsuperheater. The Edison Incandescent Mazda Lamp There has appeared, in these columns,a description of the manufacture of thecarbon incandescent lamp. Inasmuch asthese lamps have been practically super-seded by the tungsten filament lamp,especially in the lighting of passengertrains, railroad stations, yards, shops, etc.,a description of the manufacture of tungsten filament lamp might beinteresting. Cane Glass Hub-. Top Anchors Orawn TungstenWire Filament Bottom Anchors Air Tight Seal Leading In Wireailass Stem Neck of BultlGlass Insulation Brass CapContact DETAILS OF MAZDA LAMP. The term filament is that commonlyapplied to the light-giving substance ofan incandescent lamp, for example, inthe carbon lamp the filament is a threadof pure carbon, while the Mazda lamphas at present a filament of tungsten is the resistance of those filaments tothe passage of electric current that heatsit to a point of incandescence. The tem-perature to which this filament can safelybe raised determines, to a great degree,the efficiency of the particular kind oflamp. The question naturally suggestedis why the tungsten filament lamp is moreefficient than the carbon. The tempera-ture of a filament is limited by themelt-ing point of its material and also its evap-oration. Tungsten has a much less tend-ency to eva
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