Similar to its Travel Town neighbor “The Shay” (Tour Stop “R”), Pickering Lumber No. 2 is a “geared” locomotive — one specifically designed to work on railroads with unusually steep, uneven tracks and lots of sharp curves – conditions common in logging, mining or dam construction operations.   Charles Heisler patented his idea for a geared locomotive in 1892.  Heisler’s design features two steam cylinders, canted inwards at a 45-degree angle to form a “V” arrangement that turns a central driveshaft – – this in contrast to Ephrem Shay’s design that incorporated vertically-mounted cylinders and an outside crankshaft.  Take a few minutes to walk around these two locomotives and look at the mechanical differences.  About 625 Heisler locomotives were produced between 1892 and 1941.