
dakshin african varg 12aeye 4-8-2

1919 kaa dakshin african railway varg 12aeye 4-8-2 ack bhaap injan thaa.
1919 aur 1929 key beach, dakshin african railway ney 67 bhaap injanon koo ack 4-8-2 parvat prakaar key pahiye kii vyavastha key saath seva mein rakhaa. 1947 aur 1953 key beach, aathh audyogik upayog key liye bhee banaae gaye they.
nirmaata.
dee dwara antim locomotive design kaksha 12aeye thaa.aeye. 1910 seey 1922 taka dakshin african railway (saar) key mukhya yaantrik abhiyanta (see. aim. ee.) aur unake behtareen engineeron mein seey ack. yeh unake varg 12 key locomotive kaa ack behtar aur badaa sanskaran thaa, jisamen tractive prayaas koo badhaane key liye badey vyaas key cylinder aur ack punah design kiye gaye boiler they.
1919 aur 1929 key beach, unamen seey kull 67 kaa nirmaan paanch aadeshon parr kiya gayaa thaa, 48 scotland mein uttar british locomotive company (aine. bee. ell.) dwara aur 19 germany key casal mein hensel aur bete dwara.
visheshataaen.
usa samay, yeye injan cape gaze parr parvat prakaar key liye anumeya adhikatam aakar key they. unhein mukhya roop seey 12veen kaksha key injanon key poorak key roop mein design kiya gayaa thaa joe pahale seey hii whitbank aur germiston key beach koyla line parr kaam curr rahey they. choonki inn injanon mein poorvavarti varg 12 kii tulanaa mein thodaa bhaari axel load thaa, isaliye yeh anuman lagaaya gayaa thaa kii way whitbank-germiston khand parr thodaa adhik bhaar lene mein saksham honge.
injanon koo plate frame parr banaaya gayaa thaa. way atyadhik germ they aur unamen piston valve, walshert valve gear aur belpire firebox they jinamen dahan kaksh shamil they. 1919 aur 1921 key pahale dou baichon key boiler rambottom suraksha valve seey lais they, jabaki baaki key kaam kii tasveeren dikhaati hain kii way ross popp suraksha valve seey lais they. teesare aur baad key baichon kii feed watter aapoorti tambe key pipes key madhyam seey ack sheersh feed vyavastha dwara kii gaee thee joe pratyek taraf chalane vaale boardon seey bhaap gumbad key aage boiler key sheersh taka chalaai jaati thee.
mool varg 12aeye superheater header koo graceley prakaar key air walve key saath vyavasthit kiya gayaa thaa jise superheater tatvon key jalane yaa injan key bahate samay adhik germ honey seey kshatigrast honey key jokhim koo rokane key liye pesh kiya gayaa thaa. jaba niyaamak bund hoe jaataa haye aur baahar kii havaa koo superheater tatvon mein kheencha jaataa haye tou valve swachaalit roop seey khul jaataa haye. bhale hii anubhav seey pataa chalaa kii germ havaa joe taba bhaap key seene aur cylinder mein pravesh karati thee, cylinder snehan key liye hanikarak thee, jiska superheater tatvon key jeevan parr koee spasht prabhaav naheen thaa, lekin inn vayu valvon key upayog koo antatah bund karane seey kuchh saal pahale thaa.
1919 aur 1921 mein vitarit kiye gaye pahale dou baichon mein johnston link-aind-pinn coupler they joe 1873 mein cape sarkari railway kii sthaapana key baad seey upayog mein they. jaba taka kii 1928 mein teesara batch aaya, taba taka saar ney apane cape gaze rolling stock koo ack naakl coupler mein badalana shuru curr diyaa thaa. isaliye teesare seey paanchven batch koo naee yugman pranali key saath vitarit kiya gayaa thaa.
nividaaen.
injanon koo dou prakaar key nivida key saath nayaa vitarit kiya gayaa thaa, prakaar mp1 aur mt. jabaki srot iss baare mein spasht naheen hain kii kaksha 12aeye key kinn baichon koo kiss prakaar key nivida key saath vitarit kiya gayaa thaa, builder key karyon kii tasveeren 1919 aur 1921 key aine. bee. ell.-nirmit injanon koo type mp1 nividaon key saath, aur hensel-nirmit aur baad mein aine. bee. ell.-nirmit injanon koo type aim. tii. nividaon key saath dikhaati hain.
mp1 nivida type karein.
mp1 nivida prakaar parr, isake koyla bunker key sheersh bhaag alag they, joe paani kii tunky key sheersh kinare key bheetar lagey hue they. isaki eendhan kshamata aur ack axel load key saath paani kii kshamata thee.
inmein seey kaee nividaon koo baad mein paani kii kshamata aur ack axel load key saath sucharu-tarfa prakaar key aim. aar. nividaon key liye punarnirmit kiya gayaa thaa.
aim. tii. tender type karein.
bhaari prakaar key aim. tii. nivida key koney-koney koyale key bunker key sheersh taka chikane they. isaki eendhan kshamata aur ack axel load key saath paani kii kshamata thee.
punah ubalana.
1930 key dashak key dauran, kaee sewarat injanon koo ack maanak boiler prakaar key saath phir seey boiler kiya gayaa thaa jise taba see. aim. ee. aeye. dwara design kiya gayaa thaa.jee. watson apani mankikaran neeti key hisse key roop mein. iss prakriya mein, way mool cab key paaramparik urdhvaadhar morchon kii tulanaa mein apane vishisht tirchhe morchon key saath watson cab seey bhee lais they. aise watson maanak punah boiler injanon koo unake vargeekaran mein ack "aar" pratyay jodkar punah vargeekrit kiya gayaa thaa.
jaba kaksha 12aeye injan sankhya 1540 aur 2135 1943 mein phir seey boil kiye jaane vaale pahale injan baney, haalaanki, watson maanak boiler mein seey kissy koo bhee upayukt naheen maanaa gayaa kyonki watson maanak sankhya. 2 shrinkhalaaen bahut chhoti theen, jabaki sankhya. 3 shrinkhalaaen bahut badee theen. isaliye dow. dwara unake liye ack vishesh boiler taiyar kiya gayaa thaa. aim.aim. usa samay kaa see. aim. ee., lauber. yeye boiler kissy bhee watson maanak boiler key anuroop naheen they aur ack poori tarah seey nae prakaar key balki badey anupaat key they, joe apekshaakrit chhote yugmit pahiyon key saath ack locomotive parr, mahaan shakti kaa prabhaav paida karate they. halanki, watson maanak boilers key liye kuchh samanya visheshtaon koo design mein shamil kiya gayaa thaa, kyonki watson maanak boilers key saath bhaagon kii vinimay kshamata kii sabse badee sambhav degree honah aavashyak maanaa gayaa thaa. boiler kaa aakar watson maanak sankhya 2 aur 3 boiler key beach thaa.
mool varg 12aeye boilers key vipareet, praarambhik aur seva mein marammat laagat key kaaran lauber boiler koo dahan kaksh key binaa banaaya gayaa. goal-sheersh aag boxes koo radial roop seey rakhaa gayaa thaa aur rahane kii pahali dou panktiyaan lachili theen. isi tarah key thaharaav buggle, peeth aur galey kii plates aur tootane vaale kshetron mein lagaae gaye they. aag key dibbe key oopar aathh cross stay they, joe steel key they.
mool belpire boiler mein rambottom suraksha valve lagey they, jabaki watson maanak boiler kii tarah, lauber boiler mein dou ross popp suraksha valve lagey they. dou davie aur metcaff injector dwara ack sheersh-feed vyavastha key madhyam seey feed watter kii aapoorti kii gaee thee. firebox mein, boiler koo peechhe aur dou saamane key konon mein ack urdhvaadhar anuprasth plate dwara leey jaaya gayaa thaa, jisamen sliding grees-snehak joote they joe gunmettle liner plates parr aaraam karate they, joe badale mein, vishesh roop seey design kiye gaye steel brackets mein lagaae gaye they. boiler bairal koo injan frame seey chaar diaphram plates dwara jodaa gayaa thaa, jise "tii" khandon mein boult kiya gayaa thaa jinhen bairal mein rivet kiya gayaa thaa.
kull milakar 44 varg 12aeye injanon koo antatah lauber boiler key saath phir seey boiler kiya gayaa aur kaksha 12ar mein punah vargeekrit kiya gayaa. punah ubalane key dauran, jisamen watson cab kii sthaapana shamil thee, injan bhee ack lambe smokebox seey lais they, jisake parinamswarup kaksha 12ar kii vishisht upasthiti hui. watson maanak boilers kii tarah, lauber boilers mein bhee chimani key peechhe vishisht aaytaakaar niyaamak aavaran thaa. kaksha 12aeye aur 12ar injanon key mamle mein, teen aur bhee spasht antar hain vistaarit smokebox, watson cab aur punah boiler injanon parr cab aur boiler key beach belpire firebox koobad kii anupasthiti.
kuchh injanon dwara punarnirmit injanon koo nirmit injanon kii tulanaa mein nimnatar steamer maanaa jaataa thaa. lauber key varg 12ar boiler kaa ack chhota sanskaran baad mein nae varg aiss1 shunting injanon parr upayog kiya gayaa thaa.
seva.
dakshin african railway.
jaba nayaa thaa, taba 12aeye varg key injanon koo whitcomp seey germiston taka key khand parr koyale koo dhone kii seva mein rakhaa gayaa thaa. binaa boil kiye gaye injanon ney apane kamkaji jeevan kaa ack badaa hissa transwall mein bitaaya, mukhya roop seey paschimi transwall mein aur springs aur germiston mein, kuchh purvi transwall mein aur nalespruit aur waterwall bowen mein aur ack cape praant mein dee aar mein. 1920 key dashak key anta mein, shayed 1929 mein kaksha 15caa kii sankhya mein aagaman key baad, kaksha ney janm key samay bhee seva kii. yahaan way durban aur pietermaritzburg key beach 1921 kii mukhya line parr kaksha 14 kii tulanaa mein dou adhik kochon key laayak they. 1936 key dauran pietermaritzburg seey bijli kaa karshan durban taka pahunchane key baad, ack kaksha 12aeye locomotive antim bhaap seey dhaki mukhya line yatri train key prabhaari they, 1977 mein, sabhi shesh kaksha 12aeye locomotives koo cape uttari pranali mein sthanantarit curr diyaa gayaa thaa taaki dee aar aur kimberley mein beconsfield mein shunt kiya jaa sakey.
dakshin africa key adhikansh hisson mein kaee punah boilard class 12aar injanon ney kaam kiya, cape praant mein kimberley, dee aar, port elizabeth aur purvi landan, glanco aur nucasal, transwall mein clerksdorp aur narangi mukt raajya mein chronstad mein shade kiya jaa rhaa thaa. east landan aur port elizabeth koo pratyek koo chaar praapt hue, baad vaale koo cape town key liye tej shaniwar subah yatri trains mein upayog key liye injan sankhya 1544,1545,2125 aur 2129 aavantit kiya gayaa.
kaksha 12aeye aur 12ar sanskaran donon bahut safal injan saabit hue jinhone cumm marammat laagat key saath achchha pradarshan kiya. seva mein pravesh karane key baad vivaran key design mein sanshodhan naa key barabar they.
audyogik seva.
saar varg 12aeye yaa varg 12aeye injanon mein seey koee bhee audyogik seva mein naheen becha gayaa thaa, lekin 1947 aur 1953 key beach aathh varg 12aeye injan, joe binaa boil kiye gaye saar injanon key samaan they, lekin superheater key binaa, aine. bee. ell. dwara audyogik seva key liye nae banaae gaye they. 
kaam sankhyaaen.
builder, varshon seey nirmit, kaary sankhya, punah boilering vivaran aur mool nivida prakaar talika mein soochibaddh hain.

