1. GE Steam Turbine Generator Erie Maritime Museum March 9, 2012

16. Steam Turbine

21. Turbine Generator – Three Phase AC

23. DC Exciter Generator

28. Commutator and Brush Holders

29. Brush Holders - Carbon Brushes Missing

30. Turbine Generator Control Panel

34. 50 Ton Crane 10 Ton Auxiliary

37. Big Bertha Steam Engine Chestnut Street Pumping Station, Erie, PA 2011

38. Erie Water Works – Bayfront Highway

39. Erie Water Works – Chestnut Street Pumping Station

46. Big Bertha Steam Engine Big Bertha is a triple expansion piston steam engine. The first cylinder has 33” diameter and 5.5 foot stroke. As the steam expands it goes to a cylinder that is 66” in diameter with a 5.5 foot stroke and then to a cylinder with a 98” diameter and a 5.5 ft. stroke. It has two 20 foot diameter flywheels and operated piston pumps that send water up to the Sigsbee reservoir on 26 th Street. It made 600 HP at 50 RPM. Operating something like this was fairly labor intensive. Big Bertha was retired from service in 1951 and pumping duty is now done by several far more powerful electric motors and centrifugal pumps.