Southern Indiana / Milwaukee Road / Tacoma Eastern 4-6-0 "Ten-Wheeler" Type Locomotives

Class 10 / G6-k (Locobase 11505)

Data from Baldwin Locomotive Works Specification for Engines, 1903, as digitized by the DeGolyer Library of Southern Methodist University - their catalogue Vol 26, p. 227. Works numbers were 23682 in February 1904, 26638 in October 1905, and 28486 in June 1906.

Months after the TE ordered #11 (Locobase 11504), it went back to Baldwin for another, bigger Ten-wheeler and returned in subsequent years for another 2. Once the USRA allowed the Milwaukee to absorb the railroad that it effectively owned (through stock purchases) since 1901 and leased since 1909, the 3 locomotives were grouped into Class G6-k.

Idaho Logging bought the 2334 in November 1926 and renumbered it #4. The other two were scrapped in November and December of 1932, respectively.

Class 11 / G2-c (Locobase 11504)

Data from Baldwin Locomotive Works Specification for Engines, 1903, as digitized by the DeGolyer Library of Southern Methodist University - their catalogue Vol 26, p. 235. Works numbers was 23673 in February 1904.

This was a relatively small Ten-wheeler that nevertheless migrated to the Milwaukee Road when the USRA oversaw that railroad's ultimate absorption of the Paradise Valley Route. It endured on the Milwaukee until it was scrapped in March 1931.

Class 31 / G5-e (Locobase 11559)

Data from Baldwin Locomotive Works Specification for Engines, 1903, as digitized by the DeGolyer Library of Southern Methodist University - their catalogue Vol 26, p. 23. Works numbers were 22641, 22650, 22651 in August 1903; 22921, 22934, 22938, 22989, 22997 in October; 23118, 23122 in November.

This railroad was well placed to attract suitors as it served the coal fields in Indiana and Ohio. Within a few years after the delivery of this set of Ten-wheeler freighters, the IS was merged with the Chicago Southern in 1910; the result was the Chicago, Terre Haute & Southeastern and the class was renumbered.

When the Milwaukee Road leased the CTH & SE for 999 years in 1921, they renumbered the class again and operated them until 1934.

Class B1 (Locobase 9857)

Data from Milwaukee Road 1930 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. Baldwin works numbers were 14581-14590 (produced in December 1895), 15465-15468 (August 1897).

Vauclain compounding system of HP & LP cylinders driving off the same crosshead. the class was rebuilt as 19"x26" simple-expansion engines in the 'teens and operated until the 1940s.

Class B2 (Locobase 9858)

Data from Milwaukee Road 1930 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. Baldwin works numbers were15509-15510 (September 1897) 15898 (April 1898), 16157-16161 (August 1898), 16186-16190 (September 1898), 17216-17221, 17239-17244 (November 1898).

This larger class of Vauclain compounds followed the B1s described in Locobase 9857 and had greater cylinder volume, which was served by a much larger boiler and grate; the latter resulted from a firebox that was lengthened considerably and widened by 6" .

4102, 4108, 4114, 4123-4125 originally went to the Marinette, Tomahawk & Western.

The class was rebuilt as 20"x26" simple-expansion G-6 class engines in the twenties and operated until the end of steam.

Class B3 (Locobase 9859)

Data from Milwaukee Road 1930 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. Baldwin works numbers were 16781-16782 (May 1899).

This was one of an interesting pair of Vauclain compounds that featured slightly larger cylinders with longer strokes. This was the smaller-boilered variant; the larger 4300 appears in Locobase 9860.

4200 was never rebuilt as a simple-expansion engine, going to the boneyard instead in February 1927.

Class B3 (Locobase 9861)

Data from Milwaukee Road 1930 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. Baldwin works numbers were 18053-18054, 18071, 18079-18082 (August 1900), 18083, 18115-18119, 18156-18159, 18167-18170, and 18212-18215 (September 1900).

At the turn into the 20th Century, the Chicago, Milwaukee, & St Paul's Vauclain-compound Ten-wheelers had evolved into a design similar to those used on most other railroads. Compared to other railroads, however, the Milwaukee was relatively late in converting its engines to simple-expansion. This class received 22" x 26" cylinders in the latter half of the 1920s. So refitted, the class carried on until the end of steam.

Class B4 (Locobase 9860)

Data from Milwaukee Road 1930 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. Baldwin works numbers were 16781-16782 (May 1899).

The smaller of this long-stroke pair of Vauclain compounds appears in Locobase 9859. This engine had a larger boiler with longer tubes.

Like the 4200, 4300 was never rebuilt as a simple-expansion engine and was scrapped in January 1927.

Class B4 (Locobase 9862)

Data from Milwaukee Road 1930 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. Baldwin works numbers were 18201-18203, 18219-18222, 18246-18249, 18268-18272 (September 1900).

Continuing its evolution of the Vauclain compound Ten-wheeler design, the Chicago, Milwaukee & St Paul procured this batch with a larger boiler than the immediately preceding B-3s (Locobase 9861) and a 30" stroke for the cylinders. In the early 1920s, the Milwaukee rebuilt the class a simple-expansion engines with 21" x 30" cylinders

Class B4 - 62"" (Locobase 9863)

Data from Milwaukee Road 1930 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive collection. Baldwin works numbers were 19430-19436, 19469-19474 (August 1901); 19508-19509, 19540-19543, 19554-19555 (September 1901); 19556-19560, 19594-19601 (October 1901); 20850-20851, 20856-20858, 20905, 20926-20930, 20973-20975, 21017 (August 1902); 22620-22621, 22645-22647, 22689, 22704, 22707, 22724-22725, 22746, 22748-22750 (August 1903); and 22771, 22802, 22828 (September 1903).

The smaller wheels of this Chicago, Milwaukee & St Paul Vauclain compound Ten-wheeler freight design seem to have cleared the way for a bigger grate to supply a boiler essentially unchanged from the earlier B-4s (Locobase 9861). Obviously pleased with the proportions, the Milwaukee ordered several batches from Baldwin over the next few years.

As with most of the MLW 4-6-0 compounds, this class was rebuilt in the 1920s as simple-expansion engines with 22" x 28" cylinders.

Class D / G-5a (Locobase 10799)

Data from Angus Sinclair (ed), Report of proceedings of the 25th annual convention of the American Railway Master Mechanics Association, 20-22 June 1892, pp. 19+

Class D / G-5a - compound (Locobase 10800)

Data from Angus Sinclair (ed), Report of proceedings of the 25th annual convention of the American Railway Master Mechanics Association, 20-22 June 1892, pp. 19+

Class G-4 (Locobase 11124)

Data from Schenectady Locomotive Works, Illustrated Catalogue of Simple and Compound Locomotives (Philadelphia: J B Lippincott, 1897), pp. 82-83.