339:- This gear is now confined to model steam engines, and low power hobby applications such as steam launch engines, ranging to a few horsepower. The eccentric is loose on the crankshaft but there are stops to limit its rotation relative to the crankshaft. Setting the eccentric to the forward running and reverse running positions can be accomplished manually by rotating the eccentric on a stopped engine, or for many engines by simply turning the engine in the desired rotation direction, where the eccentric then positions itself automatically. The engine is pushed forwards to put the eccentric in the forward gear position and backwards to put it in the backward gear position. There is no variable control of cutoff. On the
254:
exhaust. However, as cutoff is shortened, the exhaust events also advance. The exhaust release point occurs earlier in the power stroke and compression earlier in the exhaust stroke. Early release wastes some energy in the steam, and early closure also wastes energy in compressing an otherwise unnecessarily large quantity of steam. Another effect of early cutoff is that the valve is moving quite slowly at the cutoff point, and this creates a constriction point causes the steam to enter the cylinder at less than full boiler pressure (called 'wire drawing' of the steam, named after the process of making metal wire by drawing it through a hole), another wasteful thermodynamic effect visible on an
507:
484:
135:
36:
561:
692:
757:. This gear used separate valves for inlet and exhaust so that the inlet cut-off could be controlled precisely. The use of separate valves and port passages for steam admission and exhaust significantly also reduced losses associated with cylinder condensation and re-evaporation. These features resulted in much improved efficiency.
493:. This is a Walschaerts-type gear in which the combination lever is linked to an arm on the connecting rod, near its small end, instead of to the crosshead. Patented in Canada by James B. Kingan and Hugo F. Ripken, patent CA 204805, issued 12 October 1920. This gear was fitted to some locomotives of the
309:
Valve gear was a fertile field of invention, with probably several hundred variations devised over the years. However, only a small number of these saw any widespread use. They can be divided into those that drove the standard reciprocating valves (whether piston valves or slide valves), those used
253:
Both slide and piston valves have the limitation that intake and exhaust events are fixed in relation to each other and cannot be independently optimised. Lap is provided on steam edges of the valve, so that although the valve stroke reduces as cutoff is advanced, the valve is always fully opened to
190:
in which the valves always open and close at the same points. This is not the ideal arrangement for a steam engine, though, because greatest power is achieved by keeping the inlet valve open throughout the power stroke (thus having full boiler pressure, minus transmission losses, against the piston
581:
Both components of the motion come from a single crank or eccentric. A problem with this arrangement (when applied to locomotives) is that one of the components of the motion is affected by the rise and fall of the locomotive on its springs. This probably explains why radial gears were largely
265:
gears for locomotives. Intake and exhaust poppet valves could be moved and controlled independently of each other, allowing for better control of the cycle. In the end, not a great number of locomotives were fitted with poppet valves, but they were common in steam cars and lorries, for example
458:
locomotive number 1850, the work taking from 16 October 1933 to 3 February 1934; but it failed on 22 March 1934. Since the inventor was unable to modify the design, the valve gear was replaced by standard
Walschaerts gear between 24 March and 11 April
765:
A locomotive's direction of travel and cut-off are set from the cab by using a reversing lever or screw reverser actuating a rod reaching to the valve gear proper. Some larger steam engines employ a power reverse, which is a
920:
968:
514:
Two eccentrics joined by a curved or straight link. A simple arrangement which works well at low speed. At high speed, a
Walschaerts-type gear is said to give better steam distribution and higher efficiency.
719:
derivative. On a 4-cylinder locomotive the arrangement is simpler. The valve gear may be inside or outside and only short rocking-shafts are needed to link the valves on the inside and outside cylinders.
510:
Stephenson's Valve gear. Two eccentrics at nearly 180-degree phase difference work cranks from the main drive shaft. Either can be selected to work the valve slide by shifting the slotted expansion link.
453:
The other was very complex and drove separate valves on top of the cylinder (for admission) and underneath the cylinder (for exhaust). After the inventor's death, this gear was fitted experimentally to
711:, used on 3-cylinder locomotives. Walschaerts gear is usually used for the two outside cylinders. Two levers connected to the outside cylinder valve rods drive the valve for the inside cylinder.
479:
No. 382 during 1910–11. Isaacson also has a patent (GB126203, published 8 May 1919) for an improved sight-feed lubricator. This was patented jointly with his representative, Ysabel Hart Cox.
250:
are added in varying proportions to provide an output motion that is variable in phase and amplitude. A variety of such mechanisms have been devised over the years, with varying success.
204:
in US parlance) to vary the restriction on steam flow, but controlling the power via the cutoff setting is generally preferable since it makes for more efficient use of boiler steam.
191:
throughout the stroke) while peak efficiency is achieved by only having the inlet valve open for a short time and then letting the steam expand in the cylinder (expansive working).
1141:
200:, and the optimal position for this varies depending on the work being done and the tradeoff desired between power and efficiency. Steam engines are fitted with regulators (
2196:
494:
230:, but this arrangement is not commonly used with steam engines, partly because achieving variable engine timing using cams is complicated. Instead, a system of
413:- used the piston rod motion on one side of the locomotive to drive the valve gear on the other side. Similar to the Deeley gear, but with detail differences.
407:. The combination levers were driven, as normal, from the crossheads. Each expansion link was driven from the crosshead on the opposite side of the engine.
715:
devised a different method for conjugating valve gear by linking the middle cylinder to the combination lever assembly of an outside cylinder, creating the
467:- a modified Walschaerts gear, patented in 1907 by Rupert John Isaacson, and others, patent no. GB190727899, published 13 August 1908. It was fitted to the
2201:
2103:
645:- Briefly popular in the United States around 1920. It had elements of the Baker patterns, but dispensed with the combination lever of the Walschaerts.
1134:
896:
2016:
994:
1127:
1591:
1586:
1063:
1039:
904:
875:
119:
1085:
827:
Animations of
Stephenson's, Walschaerts', Baker's, Southern and Young's valve gear. SteamLocomotive.com, Accessed 1 September 2014
2050:
1962:
820:
604:
600:
340:
2544:
2499:
2384:
2245:
2096:
731:
617:- a modified Hackworth gear, patented in 1879 by Marshall, Sons & Co. A modern application is to the miniature locomotive
2594:
2021:
1856:
1665:
57:
386:
One component of the motion comes from a crank or eccentric. The other component comes from a separate source, usually the
2265:
1309:
793:
708:
628:
468:
2235:
670:
100:
1695:
1685:
72:
1889:
1753:
1734:
1725:
1609:
1221:
1164:
659:
533:
239:
53:
753:
Large stationary engines often used an advanced form of valve gear developed by George Henry
Corliss, usually called
841:
707:
These enable a 3-cylinder or 4-cylinder locomotive to be built with only two sets of valve gear. The best known is
675:
2089:
1503:
700:
506:
354:
187:
582:
superseded by
Walschaerts-type gears in railway practice but continued to be used in traction and marine engines.
79:
46:
2589:
2489:
2319:
2055:
2044:
1601:
208:
1829:
1761:
487:
Soo Line 346 in 1961, showing the Kinkan-Ripken arm on the connecting rod at the right hand edge of the picture
455:
426:
397:- most common valve gear on later locomotives, normally externally mounted. Also known as Heusinger valve gear.
347:
from 1889 used a slip eccentric to operate the valve of the single low-pressure cylinder. These included the
2065:
2060:
1981:
1705:
1650:
1372:
1328:
614:
444:
282:
174:
and allow exhaust steam to escape, respectively, at the correct points in the cycle. It can also serve as a
86:
2584:
2395:
2359:
2300:
2070:
1968:
1809:
1690:
1341:
1279:
680:
438:
430:
394:
243:
139:
2474:
2374:
2295:
2260:
2225:
2191:
2026:
1935:
1660:
1581:
1554:
1284:
1269:
1179:
783:
636:
590:
519:
483:
267:
231:
196:
1995:
990:
207:
A further benefit may be obtained by admitting the steam to the cylinder slightly before front or back
68:
529:
2563:
2459:
2270:
1680:
1619:
1480:
1346:
1294:
1231:
1184:
754:
746:
586:
360:
344:
1111:
of
Walschaerts valve gear and Stephenson valve gear, as supplied on working steam model locomotives.
2523:
2290:
2250:
1989:
1523:
1397:
1314:
1304:
716:
655:
642:
348:
290:
2449:
2240:
2173:
1922:
1916:
1910:
1902:
1897:
1485:
1108:
863:
416:
2329:
2183:
1786:
1634:
1624:
1573:
1528:
1508:
1495:
1475:
1457:
1402:
1356:
1226:
1169:
1035:
900:
871:
696:
497:("Soo Line"); Hugo Ripken worked as a foreman in the Soo Line's Shoreham Shops in Minneapolis.
319:
255:
171:
2439:
2285:
2230:
2121:
1862:
1850:
1823:
1549:
1467:
1437:
1289:
624:
569:
549:
543:
539:
523:
143:
2533:
2434:
2035:
1768:
1710:
1629:
1518:
1513:
1427:
1382:
1114:
824:
817:
798:
712:
476:
404:
286:
271:
219:
1055:
293:
practice, the shortcomings of valves and valve gears were among the factors that lead to
17:
1077:
1016:
93:
2528:
2518:
2479:
2419:
2414:
2379:
2275:
2255:
2206:
1954:
1803:
1775:
1452:
1351:
1274:
1264:
1174:
788:
771:
767:
596:
400:
369:
175:
134:
270:
lorries, locomotives and railcars used poppet valves. A very late
British design, the
2578:
2508:
2454:
2429:
2424:
2349:
2324:
1742:
1715:
1614:
1533:
1369:
632:
315:
247:
235:
2469:
2354:
2334:
1943:
1700:
1447:
1432:
1387:
1241:
1236:
1150:
942:
608:
542:, a straight-link valve gear. It is fitted to 0-4-0WT "Dolgoch", preserved on the
434:
420:
294:
275:
262:
227:
159:
1102:
447:
seems to have designed at least two different modifications of
Walschaerts gear.
2484:
2464:
2444:
2364:
2138:
1868:
1842:
1795:
1392:
1366:
1336:
1214:
1209:
35:
1116:
Animations of 5 Stephenson, Walschaert, Baker, Southern, and Young valve gears.
560:
2404:
2369:
2339:
2280:
2148:
2126:
2112:
1874:
1817:
1442:
1377:
1361:
1299:
1246:
664:
311:
298:
194:
The point at which steam stops being admitted to the cylinder is known as the
2553:
2163:
2158:
2143:
2130:
1670:
1655:
387:
278:
adapted from internal combustion engines, but this class was not a success.
372:- used on earliest locomotives. Allowed reversing but no control of cutoff.
2558:
2153:
1559:
837:
223:
201:
691:
2513:
2409:
437:. This gear is fitted to Bagnall 3023 and 3050, both preserved on the
2168:
1675:
1412:
147:
27:
Mechanism for controlling steam flow in a reciprocating steam engine.
2081:
186:
In the simple case, this can be a relatively simple task as in the
2344:
2310:
1194:
690:
559:
522:- most common valve gear in the 19th century, normally inside the
505:
482:
167:
163:
893:
The
Locomotive History of the South Eastern & Chatham Railway
215:) assists in cushioning the inertia of the motion at high speed.
1119:
2085:
1123:
770:
mechanism, usually powered by steam. This makes control of the
627:- Invented by Charles Brown (1827-1905) who was the father of
572:- fairly common in the United States, it had no sliding parts.
29:
261:
These inefficiencies drove the widespread experimentation in
218:
In the internal combustion engine, this task is performed by
1034:. Burbank, California: Superior Publishing Co. p. 25.
703:
locomotive, driven from the outside
Walschaerts valve gear
403:
valve gear - fitted to several express locomotives on the
870:. Penryn: Atlantic Transport Publishers. pp. 23–24.
162:
is the mechanism that operates the inlet and exhaust
2542:
2498:
2393:
2309:
2215:
2182:
2120:
2009:
1980:
1953:
1934:
1888:
1841:
1794:
1785:
1752:
1733:
1724:
1643:
1600:
1572:
1542:
1494:
1466:
1420:
1411:
1327:
1255:
1202:
1193:
1157:
667:, oscillating-cam valve gear, rotary-cam valve gear
607:in England, and elsewhere. A preserved example is
343:, some of the three-cylinder compounds designed by
234:, cranks and levers is generally used to control a
60:. Unsourced material may be challenged and removed.
495:Minneapolis, St. Paul and Sault Ste. Marie Railway
943:"Brief Biographies of Major Mechanical Engineers"
178:. It is sometimes referred to as the "motion".
2097:
1135:
868:Compound Locomotives: An International Survey
8:
502:Dual eccentric gear (Stephenson-type gears)
2104:
2090:
2082:
1791:
1730:
1417:
1199:
1142:
1128:
1120:
382:Constant lead gear (Walschaerts-type gear)
310:with poppet valves, and stationary engine
211:. This advanced admission (also known as
120:Learn how and when to remove this message
699:conjugated valve gear mechanism used on
133:
2017:Glossary of steam locomotive components
810:
1088:from the original on 4 November 2011.
993:. Patents.ic.gc.ca. 12 October 1920.
7:
58:adding citations to reliable sources
671:Franklin oscillating-cam valve gear
599:- a design used extensively on the
1869:National Museum of Scotland engine
1066:from the original on 4 March 2016.
844:from the original on 27 April 2012
25:
997:from the original on 8 March 2014
2051:List of steam technology patents
1019:. – via Internet Archive.
969:"Espacenet - Bibliographic data"
921:"Espacenet - Bibliographic data"
556:Lever and link gear (Baker-type)
450:One was relatively conventional.
341:London and North Western Railway
242:from the motion. Generally, two
34:
2385:Schwartzkopff-Eckhardt II bogie
732:Bulleid chain-driven valve gear
724:Bulleid chain-driven valve gear
532:valve gear 1832, used first by
45:needs additional citations for
2036:Murdoch's model steam carriage
2022:History of steam road vehicles
676:Franklin rotary-cam valve gear
1:
1963:Murray's Hypocycloidal Engine
891:Bradley, D.L. (April 1980) .
794:Steam locomotive nomenclature
709:Gresley conjugated valve gear
629:Charles Eugene Lancelot Brown
469:Garstang and Knot-End Railway
1686:Return connecting rod engine
1103:Berry accelerator valve gear
465:Isaacson's patent valve gear
301:were also extensively used.
1610:Condensing steam locomotive
838:"Slip-eccentric valve gear"
818:Steam Locomotive Valve Gear
660:British Caprotti valve gear
534:Baltimore and Ohio Railroad
2611:
1917:"Coalbrookdale Locomotive"
1030:Dorin, Patrick C. (1979).
701:Victorian Railways H class
188:internal combustion engine
2320:AAR type A switcher truck
1923:"Pen-y-Darren" locomotive
1592:Single- and double-acting
971:. Worldwide.espacenet.com
923:. Worldwide.espacenet.com
564:Baker valve gear assembly
326:Reciprocating valve gears
18:Slip-eccentric valve gear
1762:Newcomen Memorial Engine
991:"CIPO - Patent - 204805"
895:(2nd ed.). London:
631:. This gear was used by
491:Kingan-Ripken valve gear
456:Southern Railway N Class
427:Bagnall-Price valve gear
297:. In stationary engines
283:stationary steam engines
2066:Timeline of steam power
2061:Stationary steam engine
1944:Woolf's compound engine
1851:Soho Manufactory engine
1706:Steeple compound engine
1373:straight line mechanism
949:. Isaacson, Rupert John
774:easier for the driver.
761:Controls for valve gear
445:James Thompson Marshall
244:simple harmonic motions
2360:Krauss-Helmholtz bogie
2071:Water-returning engine
2045:Lean's Engine Reporter
1818:Chacewater Mine engine
1691:Six-column beam engine
840:. Roundhouse-eng.com.
823:5 January 2012 at the
704:
565:
511:
488:
439:Welsh Highland Railway
395:Walschaerts valve gear
314:used with semi-rotary
151:
140:Walschaerts valve gear
2595:Locomotive valve gear
2375:Radial steering truck
2192:AAR wheel arrangement
1911:London Steam Carriage
1017:"Railway age gazette"
694:
637:Duffield Bank Railway
591:John Wesley Hackworth
563:
520:Stephenson valve gear
509:
486:
246:with different fixed
137:
2202:Swiss classification
1857:Bradley Works engine
1681:Reciprocating engine
1504:Babcock & Wilcox
1347:Centrifugal governor
1060:www.martynbane.co.uk
747:Corliss steam engine
681:Reidinger valve gear
587:Hackworth valve gear
475:(built 1909) and to
345:Francis William Webb
54:improve this article
1398:Sun and planet gear
1082:www.irsociety.co.uk
1078:"Correspondence 60"
864:Van Riemsdijk, J.T.
717:Holcroft valve gear
656:Caprotti valve gear
643:Southern valve gear
615:Marshall valve gear
2450:Klien-Lindner axle
2197:UIC classification
2174:Dual Control Stand
1898:Richard Trevithick
1496:Water-tube boilers
1310:Gresley conjugated
755:Corliss valve gear
739:Corliss valve gear
705:
697:Henschel & Son
650:Poppet valve gears
566:
512:
489:
417:Baguley valve gear
305:Valve gear designs
295:compound expansion
152:
2572:
2571:
2475:Road–rail vehicle
2460:Luttermöller axle
2330:Articulated bogie
2184:Wheel arrangement
2079:
2078:
2005:
2004:
1884:
1883:
1568:
1567:
1468:Fire-tube boilers
1323:
1322:
687:Conjugating gears
429:- a variation of
256:indicator diagram
130:
129:
122:
104:
16:(Redirected from
2602:
2590:Locomotive parts
2345:Cleminson system
2106:
2099:
2092:
2083:
2029:fardier Ă vapeur
1863:Whitbread Engine
1824:Smethwick Engine
1792:
1731:
1550:Feedwater heater
1418:
1200:
1144:
1137:
1130:
1121:
1090:
1089:
1074:
1068:
1067:
1056:"0-6-4st Badger"
1052:
1046:
1045:
1027:
1021:
1020:
1013:
1007:
1006:
1004:
1002:
987:
981:
980:
978:
976:
965:
959:
958:
956:
954:
939:
933:
932:
930:
928:
917:
911:
910:
888:
882:
881:
860:
854:
853:
851:
849:
834:
828:
815:
625:Brown valve gear
570:Baker valve gear
550:Gooch valve gear
544:Talyllyn Railway
540:Allan valve gear
536:, United States.
530:William T. James
524:locomotive frame
411:Young valve gear
370:Gab or hook gear
287:traction engines
144:steam locomotive
125:
118:
114:
111:
105:
103:
62:
38:
30:
21:
2610:
2609:
2605:
2604:
2603:
2601:
2600:
2599:
2575:
2574:
2573:
2568:
2538:
2494:
2435:Equalising beam
2389:
2305:
2211:
2178:
2125:
2116:
2110:
2080:
2075:
2001:
1976:
1949:
1930:
1880:
1837:
1781:
1769:Fairbottom Bobs
1754:Newcomen engine
1748:
1720:
1666:Expansion valve
1639:
1625:Watt's separate
1596:
1564:
1538:
1490:
1462:
1407:
1383:Parallel motion
1319:
1270:Stephenson link
1251:
1189:
1158:Operating cycle
1153:
1148:
1099:
1094:
1093:
1076:
1075:
1071:
1054:
1053:
1049:
1042:
1029:
1028:
1024:
1015:
1014:
1010:
1000:
998:
989:
988:
984:
974:
972:
967:
966:
962:
952:
950:
941:
940:
936:
926:
924:
919:
918:
914:
907:
890:
889:
885:
878:
862:
861:
857:
847:
845:
836:
835:
831:
825:Wayback Machine
816:
812:
807:
799:Trofimoff valve
780:
763:
741:
726:
713:Harold Holcroft
689:
652:
579:
558:
504:
477:Midland Railway
405:Midland Railway
384:
379:
356:Greater Britain
333:
328:
307:
272:SR Leader class
184:
126:
115:
109:
106:
63:
61:
51:
39:
28:
23:
22:
15:
12:
11:
5:
2608:
2606:
2598:
2597:
2592:
2587:
2577:
2576:
2570:
2569:
2567:
2566:
2561:
2556:
2550:
2548:
2545:exhaust system
2540:
2539:
2537:
2536:
2531:
2526:
2521:
2516:
2511:
2505:
2503:
2500:Exhaust system
2496:
2495:
2493:
2492:
2487:
2482:
2480:Trailing wheel
2477:
2472:
2467:
2462:
2457:
2452:
2447:
2442:
2437:
2432:
2427:
2422:
2420:Carrying wheel
2417:
2415:Beugniot lever
2412:
2407:
2401:
2399:
2391:
2390:
2388:
2387:
2382:
2380:Scheffel bogie
2377:
2372:
2367:
2362:
2357:
2352:
2347:
2342:
2337:
2332:
2327:
2322:
2316:
2314:
2307:
2306:
2304:
2303:
2298:
2293:
2288:
2283:
2278:
2273:
2268:
2263:
2258:
2253:
2248:
2243:
2238:
2233:
2228:
2222:
2220:
2213:
2212:
2210:
2209:
2207:Whyte notation
2204:
2199:
2194:
2188:
2186:
2180:
2179:
2177:
2176:
2171:
2166:
2161:
2156:
2151:
2146:
2141:
2135:
2133:
2118:
2117:
2111:
2109:
2108:
2101:
2094:
2086:
2077:
2076:
2074:
2073:
2068:
2063:
2058:
2053:
2048:
2041:
2040:
2039:
2033:
2019:
2013:
2011:
2007:
2006:
2003:
2002:
2000:
1999:
1993:
1986:
1984:
1978:
1977:
1975:
1974:
1966:
1959:
1957:
1951:
1950:
1948:
1947:
1940:
1938:
1932:
1931:
1929:
1928:
1927:
1926:
1920:
1914:
1908:
1894:
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1854:
1847:
1845:
1839:
1838:
1836:
1835:
1827:
1821:
1815:
1807:
1804:Kinneil Engine
1800:
1798:
1789:
1783:
1782:
1780:
1779:
1776:Elsecar Engine
1773:
1765:
1758:
1756:
1750:
1749:
1747:
1746:
1739:
1737:
1728:
1722:
1721:
1719:
1718:
1713:
1708:
1703:
1698:
1696:Steeple engine
1693:
1688:
1683:
1678:
1673:
1668:
1663:
1658:
1653:
1647:
1645:
1641:
1640:
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1589:
1584:
1578:
1576:
1570:
1569:
1566:
1565:
1563:
1562:
1557:
1555:Feedwater pump
1552:
1546:
1544:
1540:
1539:
1537:
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1531:
1526:
1521:
1516:
1511:
1506:
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1464:
1463:
1461:
1460:
1455:
1450:
1445:
1440:
1435:
1430:
1424:
1422:
1421:Simple boilers
1415:
1409:
1408:
1406:
1405:
1403:Watt's linkage
1400:
1395:
1390:
1385:
1380:
1375:
1364:
1359:
1354:
1352:Connecting rod
1349:
1344:
1339:
1333:
1331:
1325:
1324:
1321:
1320:
1318:
1317:
1312:
1307:
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1297:
1292:
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1234:
1229:
1224:
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1197:
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1190:
1188:
1187:
1182:
1177:
1172:
1167:
1161:
1159:
1155:
1154:
1149:
1147:
1146:
1139:
1132:
1124:
1118:
1117:
1112:
1106:
1098:
1097:External links
1095:
1092:
1091:
1069:
1047:
1040:
1022:
1008:
982:
960:
947:steamindex.com
934:
912:
905:
899:. p. 93.
883:
876:
855:
829:
809:
808:
806:
803:
802:
801:
796:
791:
789:Reversing gear
786:
779:
776:
772:reversing gear
762:
759:
751:
750:
740:
737:
736:
735:
725:
722:
688:
685:
684:
683:
678:
673:
668:
662:
651:
648:
647:
646:
640:
622:
612:
609:LNWR G2a Class
597:Joy valve gear
594:
578:
575:
574:
573:
557:
554:
553:
552:
547:
537:
527:
503:
500:
499:
498:
480:
462:
461:
460:
451:
442:
424:
414:
408:
398:
383:
380:
378:
375:
374:
373:
367:
337:Slip-eccentric
332:
329:
327:
324:
316:Corliss valves
306:
303:
266:virtually all
183:
180:
176:reversing gear
128:
127:
42:
40:
33:
26:
24:
14:
13:
10:
9:
6:
4:
3:
2:
2607:
2596:
2593:
2591:
2588:
2586:
2585:Steam engines
2583:
2582:
2580:
2565:
2562:
2560:
2557:
2555:
2552:
2551:
2549:
2546:
2541:
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2517:
2515:
2512:
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2507:
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2483:
2481:
2478:
2476:
2473:
2471:
2468:
2466:
2463:
2461:
2458:
2456:
2455:Leading wheel
2453:
2451:
2448:
2446:
2443:
2441:
2440:Gölsdorf axle
2438:
2436:
2433:
2431:
2430:Driving wheel
2428:
2426:
2425:Coupled wheel
2423:
2421:
2418:
2416:
2413:
2411:
2408:
2406:
2403:
2402:
2400:
2397:
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2376:
2373:
2371:
2368:
2366:
2363:
2361:
2358:
2356:
2353:
2351:
2350:Grovers bogie
2348:
2346:
2343:
2341:
2338:
2336:
2333:
2331:
2328:
2326:
2325:Arnoux system
2323:
2321:
2318:
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2315:
2312:
2308:
2302:
2299:
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2262:
2259:
2257:
2254:
2252:
2249:
2247:
2244:
2242:
2239:
2237:
2236:Bagnall–Price
2234:
2232:
2229:
2227:
2224:
2223:
2221:
2218:
2214:
2208:
2205:
2203:
2200:
2198:
2195:
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2185:
2181:
2175:
2172:
2170:
2167:
2165:
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2147:
2145:
2142:
2140:
2137:
2136:
2134:
2132:
2128:
2123:
2119:
2114:
2107:
2102:
2100:
2095:
2093:
2088:
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2072:
2069:
2067:
2064:
2062:
2059:
2057:
2054:
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2047:
2046:
2042:
2037:
2034:
2031:
2030:
2025:
2024:
2023:
2020:
2018:
2015:
2014:
2012:
2008:
1997:
1994:
1991:
1988:
1987:
1985:
1983:
1979:
1972:
1971:
1967:
1964:
1961:
1960:
1958:
1956:
1952:
1945:
1942:
1941:
1939:
1937:
1933:
1924:
1921:
1918:
1915:
1912:
1909:
1906:
1905:
1904:Puffing Devil
1901:
1900:
1899:
1896:
1895:
1893:
1891:
1890:High-pressure
1887:
1876:
1873:
1870:
1867:
1864:
1861:
1858:
1855:
1852:
1849:
1848:
1846:
1844:
1843:Rotative beam
1840:
1833:
1832:
1828:
1825:
1822:
1819:
1816:
1813:
1812:
1808:
1805:
1802:
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1774:
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1770:
1766:
1763:
1760:
1759:
1757:
1755:
1751:
1744:
1743:Savery Engine
1741:
1740:
1738:
1736:
1732:
1729:
1727:
1723:
1717:
1716:Working fluid
1714:
1712:
1709:
1707:
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1699:
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1426:
1425:
1423:
1419:
1416:
1414:
1410:
1404:
1401:
1399:
1396:
1394:
1393:Rotative beam
1391:
1389:
1386:
1384:
1381:
1379:
1376:
1374:
1371:
1370:hypocycloidal
1368:
1365:
1363:
1360:
1358:
1355:
1353:
1350:
1348:
1345:
1343:
1340:
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1178:
1176:
1173:
1171:
1168:
1166:
1163:
1162:
1160:
1156:
1152:
1151:Steam engines
1145:
1140:
1138:
1133:
1131:
1126:
1125:
1122:
1115:
1113:
1110:
1107:
1104:
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1096:
1087:
1083:
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1043:
1041:0-87564-712-X
1037:
1033:
1026:
1023:
1018:
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1009:
996:
992:
986:
983:
970:
964:
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948:
944:
938:
935:
922:
916:
913:
908:
906:0-901115-49-5
902:
898:
894:
887:
884:
879:
877:0-906899-61-3
873:
869:
865:
859:
856:
843:
839:
833:
830:
826:
822:
819:
814:
811:
804:
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797:
795:
792:
790:
787:
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781:
777:
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773:
769:
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758:
756:
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674:
672:
669:
666:
663:
661:
657:
654:
653:
649:
644:
641:
638:
634:
633:Corpet-Louvet
630:
626:
623:
620:
616:
613:
611:number 49395.
610:
606:
602:
598:
595:
592:
588:
585:
584:
583:
576:
571:
568:
567:
562:
555:
551:
548:
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541:
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531:
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346:
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338:
335:
334:
330:
325:
323:
321:
317:
313:
304:
302:
300:
296:
292:
291:marine engine
288:
284:
279:
277:
276:sleeve valves
273:
269:
264:
259:
257:
251:
249:
245:
241:
237:
236:D slide valve
233:
229:
228:poppet valves
225:
221:
216:
214:
210:
205:
203:
199:
198:
192:
189:
181:
179:
177:
173:
169:
165:
161:
157:
149:
145:
141:
136:
132:
124:
121:
113:
102:
99:
95:
92:
88:
85:
81:
78:
74:
71: –
70:
66:
65:Find sources:
59:
55:
49:
48:
43:This article
41:
37:
32:
31:
19:
2470:Railway tire
2396:running gear
2355:Jacobs bogie
2335:Bissel truck
2216:
2124:positioning
2056:Modern steam
2043:
2028:
1990:Porter-Allen
1969:
1903:
1830:
1810:
1767:
1701:Safety valve
1630:"Pickle-pot"
1524:Thimble tube
1256:
1081:
1072:
1059:
1050:
1032:The Soo Line
1031:
1025:
1011:
999:. Retrieved
985:
973:. Retrieved
963:
951:. Retrieved
946:
937:
925:. Retrieved
915:
892:
886:
867:
858:
846:. Retrieved
832:
813:
764:
752:
744:
729:
706:
618:
589:invented by
580:
577:Radial gears
513:
490:
472:
464:
435:W.G. Bagnall
421:W.G. Bagnall
410:
385:
361:
355:
349:
336:
308:
280:
263:poppet valve
260:
252:
248:phase angles
240:piston valve
217:
212:
206:
195:
193:
185:
160:steam engine
155:
153:
131:
116:
110:January 2010
107:
97:
90:
83:
76:
69:"Valve gear"
64:
52:Please help
47:verification
44:
2485:Train wheel
2465:Radial axle
2445:Journal box
2365:Mason Bogie
2301:Walschaerts
2139:Cab forward
1787:Watt engine
1587:Oscillating
1543:Boiler feed
1388:Plate chain
1367:Tusi couple
1280:Walschaerts
1165:Atmospheric
431:Walschaerts
331:Early types
320:drop valves
299:trip valves
209:dead centre
2579:Categories
2405:Adams axle
2370:Pony truck
2340:Blomberg B
2296:Stephenson
2281:Kuhn slide
2217:Valve gear
2149:Steeplecab
2127:Short hood
2113:Locomotive
1996:Ljungström
1982:High-speed
1875:Lap Engine
1831:Resolution
1735:Precursors
1620:Kirchweger
1582:Locomotive
1529:Three-drum
1509:Field-tube
1476:Locomotive
1458:Lancashire
1378:Link chain
1362:Crankshaft
1329:Mechanisms
1257:Valve gear
1001:13 January
975:12 January
953:12 January
927:12 January
848:2 December
805:References
665:Hugo Lentz
471:'s 2-6-0T
419:- used by
377:Link gears
312:trip gears
232:eccentrics
213:lead steam
156:valve gear
80:newspapers
2554:Blastpipe
2271:Hackworth
2164:Cowl unit
2159:Hood unit
2144:Sharknose
2131:Long hood
2027:Cugnot's
1970:Salamanca
1671:Hydrolock
1656:Crosshead
1602:Condenser
1438:Egg-ended
473:Blackpool
388:crosshead
362:John Hick
202:throttles
170:into the
166:to admit
2559:Smokebox
2547:elements
2524:Lemaître
2490:Wheelset
2398:elements
2291:Southern
2251:Caprotti
2154:Cab unit
2010:See also
1936:Compound
1811:Old Bess
1651:Blowback
1574:Cylinder
1560:Injector
1519:Stirling
1514:Sentinel
1428:Haystack
1342:Cataract
1315:Southern
1305:Caprotti
1180:Compound
1109:Diagrams
1086:Archived
1064:Archived
995:Archived
866:(1994).
842:Archived
821:Archived
778:See also
695:View of
601:L&YR
593:in 1859.
433:used by
350:Teutonic
268:Sentinel
226:driving
224:camshaft
172:cylinder
2564:Chimney
2543:Common
2534:Lemprex
2514:Kylchap
2410:Axlebox
2266:Gresley
2246:Bulleid
2241:Baguley
1726:History
1635:Surface
1453:Cornish
1413:Boilers
1295:Corliss
1232:Corliss
1215:D slide
1185:Uniflow
1175:Cornish
364:classes
274:, used
182:Purpose
148:PRR E6s
94:scholar
2529:Lempor
2519:Kylpor
2394:Other
2169:Boxcab
2115:design
2038:(1784)
2032:(1769)
1998:(1908)
1992:(1862)
1973:(1812)
1965:(1805)
1955:Murray
1946:(1803)
1925:(1804)
1919:(1803)
1913:(1803)
1907:(1801)
1877:(1788)
1871:(1786)
1865:(1785)
1859:(1783)
1853:(1782)
1834:(1781)
1826:(1779)
1820:(1778)
1814:(1777)
1806:(1768)
1778:(1795)
1772:(1760)
1764:(1725)
1745:(1698)
1711:Stroke
1676:Piston
1661:Cutoff
1534:Yarrow
1486:Launch
1481:Scotch
1242:Sleeve
1237:Poppet
1222:Piston
1203:Valves
1195:Valves
1038:
903:
874:
784:Cutoff
619:Badger
401:Deeley
197:cutoff
164:valves
96:
89:
82:
75:
67:
2509:Giesl
2502:types
2313:types
2311:Bogie
2286:Lentz
2261:Gooch
2231:Baker
2226:Allan
2219:types
1644:Other
1448:Flued
1433:Wagon
1357:Crank
1300:Lentz
1290:Baker
1285:Allan
1210:Slide
768:servo
459:1934.
222:on a
168:steam
158:of a
142:on a
101:JSTOR
87:books
1796:Beam
1337:Beam
1247:Bash
1227:Drop
1170:Watt
1036:ISBN
1003:2013
977:2013
955:2013
929:2013
901:ISBN
897:RCTS
872:ISBN
850:2012
745:See
730:See
635:and
605:LNWR
603:and
359:and
289:and
220:cams
154:The
138:The
73:news
2276:Joy
2256:Gab
2122:Cab
1615:Jet
1443:Box
1275:Joy
1265:Gab
318:or
281:In
238:or
146:(a
56:by
2581::
2129:/
1084:.
1080:.
1062:.
1058:.
945:.
658:,
390:.
353:,
322:.
285:,
258:.
150:).
2105:e
2098:t
2091:v
1143:e
1136:t
1129:v
1105:.
1044:.
1005:.
979:.
957:.
931:.
909:.
880:.
852:.
639:.
621:.
546:.
526:.
441:.
423:.
366:.
123:)
117:(
112:)
108:(
98:·
91:·
84:·
77:·
50:.
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
