Notatio Whyte

Notatio Whyte ad hamaxam vaporariam ordine rotarum describendam a Friderico Methvan Whyte excogitata est et parte prima saeculi 20 in usu esse ob opinionem in ephemeride American Engineer and Railroad Journal mense Decembri 1900 publicatam coepit. Systema Whyte numerum rotarum praecedentarum, tum numerum rotarum pellandi, tum numerum rotarum sequentium enumerat, qui numeri sunt abs hyphen separati.. Alia systemata describendi, ut Descriptio UIC vel systemata Gallica, Turcica, Helvetica, axes pro rotas enumerant.

Ita hamaxa cum duabus axibus praecedentis (quattuor rotis), tribus axibus pellandi (sex rotis), et una axe sequenta (duabus rotis) est descripta ut 4-6-2.

 Modus 

 Hamaxae cum articulis 
Hamaxae cum articulis, ut hamaxae Garratt, quae reapse sunt duae hamaxae a fervefactorio coniugatae, symbolum + inter descriptionas quaeque hamaxae habent. Ita hamaxa Garratt generis "double Pacific" (Latine "Pacifica bina" dicere possumus) est 4-6-2+2-6-4.

Genera simpliciores ut hamaxae Mallet, quae axes non pellandi inter axes pellandi non habent, plures greges numerorum in medio habent. Ita hamaxa Union Pacific Big Boy est 4-8-8-4; sunt duas axes praecedentas, una grex quattuor axium pellandi, alia grex quattuor axium pellandi, tum duas axes sequentas.

 Postpositiones 
Postpositio T hamaxam cum lacu significat quia littera T est pro verbo Anglico tank (lacus); sine littera T currus materiae propulsoriae significatur. In usu Britannico, aliquando postpositiones hamaxae cum lacu significandae sunt plures: littera T lacum lateralem significat, PT est lacus in soraco, ST est lacus in ephippio, WT est lacus in puteo. T+T hamaxum cum lacu et curru significat.

In Europa, postpositio R hamaxam pro ferrivia dentata significet (e.g. 0-6-0RT) aut hamaxum quae directionem invertere potest (e.g. 0-6-0TR), quae est hamaxae Bi-cabine in usu in Gallia.

Postpositio F hamaxam sine flamma significat (e.g. 0-4-0F). Nota quod haec hamaxa currum materiae propulsoriae non habet.

Aliis temporibus sunt aliae postpositiones, ut ng pro hamaxis in ferriviis angustis (i.e. minus quam 1 435 mm) aut CA vel ca pro hamaxis quae aëri compresso utentur.

 Hamaxae Diselianae benziniorumque 

In Britannia, hamaxae parvae Diselianae benziniorumque maxime sunt in eodem modo descriptae, e.g. 0-4-0, 0-6-0, 0-8-0. Postpositiones possunt D (Diseliana) aut P (benzinii) et alia littera pro genere transmissionis: E (electrica), H (hydraulica), M (mechanica). Ita 0-6-0DE hamaxam Diselianam cum sex rotis et transmissione electrica significat. Si axes sunt vinculis scapisve (pro radio laterale) coniunctae aut singulariter pellatae, symbolis 4w, 6w, 8w utentur. Ita 4wPE hamaxam benzinii cum quattuor rotis et transmissione electrica significat. Descriptioni UIC pro hamaxis Diselianis magnis utentur.

 Circumscriptiones 
Cirumscriptio principia systematis Whyte erat habere nullam facultatem ad hamaxas insolitas describendas ut hamaxam Shay quae rotis a rotis dentatis (pro directe) pellandis utitur. Hoc res ad alia genera descriptionis adduxit. In Europa (extra Regnum Britanniarum) descriptio princeps est UIC, quae descriptio hamaxam exacte describeat.

 Nominatio 
In usu Americano (et minore ex parte in usu Britannico), pleraeque ordines rotarum nominatae sunt, saepe ex nomine hamaxae primae illae generis.

 Ordines rotarum solitae 
Ecce tabula ordinum rotarum solitarum. In pictura, frons hamaxae est sinistrá.

OrdoDescriptio WhyteNomenHamaxae sine articulis27px|0-2-20-2-2Northumbrian30px|2-2-02-2-0Planet35px|2-2-22-2-2Single, Jenny Lind45px|2-2-42-2-4  40px|4-2-04-2-0Jervis, p. 33.50px|4-2-24-2-2Bicycle55px|4-2-44-2-4  50px|6-2-06-2-0Crampton35px|0-4-00-4-0Four-Coupled45px|0-4-20-4-2  55px|0-4-40-4-4Forney45px|2-4-02-4-0Porter, 'Old English'Ellis, C Hamilton, Some Classic Locomotives,  Allen & Unwin, 1949.173 p. 60px|2-4-22-4-2Columbia65px|2-4-42-4-4  60px|4-4-04-4-0American,White (1968), p. 46. Eight-wheeler70px|4-4-24-4-2Atlantic75px|4-4-44-4-4Reading, Jubilee (Canada)55px|0-6-00-6-0(rota pellandi singula per axem; in Patiala State Monorail Trainways et in Listowel and Ballybunion Railway)55px|0-6-00-6-0Six-Coupled, Bourbonnais (Gallia), USRA 0-6-0 (CFA)65px|0-6-20-6-2  75px|0-6-40-6-4 Forney six-coupled70px|2-6-02-6-0MogulWhite (1968), p 62-65.75px|2-6-22-6-2Prairie80px|2-6-42-6-4Adriatic85px|2-6-62-6-675px|4-6-04-6-0Ten-WheelerWhite (1968), p. 57. (non in Britannia)80px|4-6-24-6-2Pacific85px|4-6-44-6-4Hudson, Baltic80px|0-8-00-8-0Eight-Coupled, USRA 0-8-0 (CFA)85px|0-8-20-8-2  90px|0-8-40-8-4  90px|2-8-02-8-0ConsolidationWhite (1968), p. 65.95px|2-8-22-8-2Mikado, Mike, MacArthur100px|2-8-42-8-4Berkshire, Kanawha105px|2-8-62-8-6Solum in quattuor hamaxis Mason Bogie100px|4-8-04-8-0Mastodon, Twelve-Wheeler105px|4-8-24-8-2Mountain, Mohawk120px|4-8-44-8-4Northern, Niagara, Confederation, Dixie, Greenbrier, Pocono, Potomac, Golden State, Western, General, Wyoming (Lehigh Valleyhttps://web.archive.org/web/20100813015406/http://www.steamlocomotive.com/northern/lv.shtml), Governor, Big Apple, GS Series "Daylight" (Southern Pacific)120px|4-8-64-8-6A Lima proposita, numquam fabricata125px|6-8-66-8-6(PRR S2 steam turbine locomotive)100px|0-10-00-10-0Ten-Coupled, (raro) Decapod105px|0-10-20-10-2Union105px|2-10-02-10-0Decapod, Russian Decapod110px|2-10-22-10-2Santa Fe, Central, Decapod (solum in ferrivia Southern Pacific)115px|2-10-42-10-4Texas, Colorado (CB&Q), Selkirk (Canada)110px|4-10-04-10-0Mastodon, Gobernador (El Gobernador honorans)115px|4-10-24-10-2Southern Pacific, Overland115px|0-12-00-12-0Twelve-Coupled120px|2-12-02-12-0Centipede125px|2-12-22-12-2Javanic130px|2-12-42-12-4  135px|4-12-24-12-2Union Pacific150px|4-14-44-14-4 AA20Duplex locomotives115px|4-4-4-44-4-4-4(PRR T1)130px|6-4-4-66-4-4-6(PRR S1)130px|4-4-6-44-4-6-4(PRR Q2)130px|4-6-4-44-6-4-4(PRR Q1)Mallet Hamaxae cum articulis80px|0-4-4-00-4-4-0Bavarian BB II 45px|2-4-038px|0-4-02-4-4-0   38px|0-4-045px|0-4-20-4-4-2  100px|2-4-4-22-4-4-2  115px|0-6-6-00-6-6-0Erie120px|2-6-6-02-6-6-0Denver & Salt Lake125px|2-6-6-22-6-6-2  135px|2-6-6-42-6-6-4Norfolk & Western140px|2-6-6-62-6-6-6Allegheny, Blue Ridge135px|4-6-6-24-6-6-2(Southern Pacific class MM-2)140px|4-6-6-44-6-6-4Challenger135px|2-6-8-02-6-8-0(Southern Railway, Great Northern Railway)145px|0-8-8-00-8-8-0Angus150px|2-8-8-02-8-8-0Bull Moose160px|2-8-8-22-8-8-2Chesapeake165px|2-8-8-42-8-8-4Yellowstone165px|4-8-8-24-8-8-2Southern Pacific cab forward genera AC-4 ad AC-12 (praeter AC-9)170px|4-8-8-44-8-8-4Big Boy185px|2-10-10-22-10-10-2(Ferriviae Santa Fe et Virginianae)220px|2-8-8-8-22-8-8-8-2Triplex (Erie RR)225px|2-8-8-8-42-8-8-8-4Triplex (Virginian RR)Garratt hamaxae cum articulis75px|0-4-0+0-4-00-4-0+0-4-0 150px|2-6-2+2-6-22-6-2+2-6-2 

 Notae 

Nexus externi



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