2-2-2 Steam Locomotives in Germany

Class 1 A Lion (Locobase 5766)

Christian Lindecke [] (visited 12 December 2003) for data. When the Bad.St.B opened its line between Mannheim and Heidelberg, it operated these little locomotives supplied by Sharp, Roberts & Co (predecessor to Sharp, Stewart). Built on an internal plate frame with external splashers over the drivers, the 1st two locomotives ("Lion" and "Seize") were originally delivered with 12" cylinders. They were upgraded to 13" when the third and 4th (Heidelberg & Mannheim) arrived in 1841. Robert and Freiburg, the 5th and 6th engines, which were delivered in 1843 had 14" cylinders.

The original valve gear seems to have been a fork-type converted later to "Capry" (Google's translation leaves me a bit uncertain). In 1854, when the line converted to standard gauge, 3, 5, & 6 were made over into 2-4-0T locomotives. The others were converted to Crampton-type engines with smaller boilers and grate areas of 432 sq ft (40.18 sq m) and 8.75 sq ft (0.81 sq m) respectively.

By 1856, all had been superseded by 2-6-0s, some bearing the same names and using some of the parts.

Class 1 b (Locobase 5767)

Christian Lindecke [] (visited 12 December 2003) for data. These were the German-built counterparts to the Sharp 1As with slightly bigger boilers. Kessler & Martiensen built one first for trials that prompted the railroad to order 7 more.

In the 1854 conversion to standard gauge, the grate area was trimmed to 8.75 sq ft (0.81 sq m) and heating surface dropped commensurately to 453 sq ft (42.06 sq m). They were replaced in 1863 by IX class engines.

Class 1 b (Locobase 5769)

Christian Lindecke [] (visited 12 December 2003) for data. Almost identical to the other 8 1bs, this engine had the Meyer expansion valve gear that used a set of auxiliary valve that rested on the primary slide valve and controlled the length of time steam would be admitted into the primary valve. The builder also increased the cylinder diameter by 2", the boiler pressure, and a few sq ft to the heating surface.

In 1854, the railroad was converted to standard gauge and #15 was converted to a 2-4-0T arrangement.

Class II - Longboiler (Locobase 5770)

Christian Lindecke [] (visited 12 December 2003) for data.

Like other "longboilers", these engines had the firebox behind the trailing axle. They also had inside cylinders on frames that were a bit too frail, according to Lindecke. If I understand the Google translation, these engines were designed for standard gauge, but adapted to "breitspur" (broad gauge) running through extended axles.

Class III C / II b (Locobase 5772)

Christian Lindecke [] (visited 12 December 2003) for data. Following the success of the Type IIIa, Bad.St.B ordered eight more singles with larger boilers.

They were convered to standard gauge in 1854, redesignated II b in 1868, and retired in 1872.

Class III a/b (Locobase 5771)

Christian Lindecke [] (visited 12 December 2003) for data. These were enlargements of Kessler's Type 1 b that came in two versions - five IIIa and four IIIb. The IIIb used a Meyer expansion valve gear arrangement featuring a fork link and two eccentric cams on each cylinder.

As small as these engines may seem to later eyes, they more than satisfied Bad.St.B expectations at the time -- eight more were ordered as IIIa with bigger boilers (see Locobase 5771). When the railway convered to standard gauge in 1854, these engines underwent a similar change. Ultimately, they were redesignated II b in 1868, and retired in 1872.

Class IV / IIb (Locobase 5773)

Christian Lindecke [] (visited 12 December 2003) for data.

Although based on the Type II of a couple of years earlier, these longboilers had taller drivers and larger boilers, but smaller grates. Lindecke says that as a result the locomotives "spat" (Google's translation) until a "kondenswasserabteilung" was installed later.

Because they were already constructed to standard-gauge dimensions, the railway's conversion to that width didn't necessitate many changes in this class. All of the engines were retired between 1867 and 1872.

Class VIII (Locobase 5774)

Data from Christian Lindecke [] (visited 12 December 2003).

The last locomotives to be built to broad-gauge dimensions, these engines were designed from the start for conversion to standard gauge (which came 7 years later). When converted, they were also converted to a 2-4-0 arrangement.