The Pennsylvania Railroad (PRR) class A1 was a class of 0-4-0 type steam locomotives. The class A1 was built from 1886 to 1892, [1] when 0-4-0s were being used by other railroads. In time, larger 0-6-0 locomotives were introduced and superseded them on other railroads.

Class A was the 0-4-0 type, an arrangement best suited to small switcher locomotives (known as "shifters" in PRR parlance). Most railroads abandoned the 0-4-0 after the 1920s, but the PRR kept it for use on small industrial branches, especially those with street trackage and tight turns.

Pennsylvania Railroad class A1 was a class of 0-4-0 type steam locomotives built for the Pennsylvania Railroad. Built from 1886 to 1892, when the A1 was introduced into service, 0-4-0s were being used by other railroads just in time when …

Feb 16, 2003 · Like most PRR designs, these burned fuel in Belpaire fireboxes that were scarcely visible in the large cabs. Virtually all were converted to A-3a saddle tank engines, which saw the removal of the double-bogie slopeback tender.

Most railroads abandoned the 0-4-0 after the 1920s, but the PRR kept it alive for use on small industrial branches, especially those with street trackage and tight turns.

PRR steam and electric classification A: 0-4-0 Class A was the 0-4-0 type, an arrangement best suited to small switchers. Most railroads abandoned the 0-4-0 after the 1920s, but the PRR kept it alive for use on small industrial branches, especially those with street trackage and tight turns. A1 A2 A3 A4 A5s B: 0-6-0

Class A was the 0-4-0 type, an arrangement best suited to small switcher locomotives. Most railroads abandoned the 0-4-0 after the 1920s, but the PRR kept it for use on small industrial branches, especially those with street trackage and tight turns. Class B comprised the 0-6-0 type, the most popular arrangement for switcher locomotives on the PRR.

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The Pennsylvania Railroad (PRR) class A1 was a class of 0-4-0 type steam locomotives.

In 1942, the PRR built 123 2-10-4 "Texas" type locomotives based on C&O plans; class J now being unoccupied, it was reused for them. The PRR J1 was an improved version of its C&O counterpart with more pulling power.