Pennsylvania Railroad class E3b was an experimental electric locomotive supplied by Westinghouse Electric & Manufacturing Co. [1] The locomotive was of the two unit design, with each unit having a B-B-B (AAR) or Bo-Bo-Bo (UIC) wheel arrangement. [1] .

The Pennsylvania Railroad's class E2, E3, E7 steam locomotives were of the 4-4-2 "Atlantic" passenger type, frequently called light Atlantics after the introduction of the heavier E6 Atlantics. All were similar in size and boiler capacity but differed in firebox type, valves and valve gear and cylinder diameter.

"Odd D" #10003, an experimental electric locomotive. The 4-4-2 "Atlantic" type was assigned class E. The PRR was an enthusiastic user of the Atlantic type in flatter country, and built some of the most advanced Atlantics used in the United States. …

The E3 was an Atlantic that was built by the PRR parallel to its E2 that was largely similar, but had larger cylinders. Between 1901 and 1910, a total of eight E3, 114 E3a and 56 E3d were built in the Juniata shops at Altoona.

E3 class engines provided the basic power dimensions under a much larger boiler. Vogt traded length for quantity "to produce a steam generator of unquestioned reliabilty", the RR reported. 14" (356 mm) piston valves admitted that steam to the cylinders.

PRR E3sd 5075 Steam Locomotive. The Pennsylvania Railroad's class E3sd steam locomotives were of the 4-4-2 "Atlantic" passenger type, frequently called light Atlantics after the introduction of the heavier E6 Atlantics. All were similar in size and boiler capacity but differed in firebox type, valves and valve gear and cylinder diameter.

The Pennsylvania Railroad’s E2 and E3 class Atlantics quickly developed a reputation for being fast, dependable runners. The E2 No. 7002 gained fame on June 12, 1905, when it reportedly set a ground speed record of 127.1 mph, making up time west of Crestline, Ohio.

Feb 15, 2024 · Shown in the second row, far right, is a PRR GG-1 stopping at Trenton as it pulls the southbound “Congressional” on September 3, 1965. The Congressional was a commuter train for business travelers and commuters.

"Odd D" #10003, an experimental electric locomotive. The 4-4-2 "Atlantic" type was assigned class E. The PRR was an enthusiastic user of the Atlantic type in flatter country, and built some of the most advanced Atlantics used in the United States. …

Feb 2, 2003 · Those that were not (the E2 and E3 experimental locomotives, and the E44), and diesel locomotives, are not currently included here; diesel locomotives had several PRR classifications but all are better known by the classifications given by their builders.