A Steam Log Hauler to model
about 1901 Alvin Lombard had an idea for a crawler tracked machine to
replace draft animals for hauling logs to the mill. An idea that lives
on still today in construction machinery. His first efforts used an
upright boiler and vertical cylinders.
due to problems with the high center of gravity, he later settled on a
style that looked something like a saddle tank railway switching
locomotive, as shown in his 1907 patent drawing. About 83 were
eventually built before trucks took over.
used during winter on 'ice roads', these odd looking beasts, and the
similar ones made by Phoenix (shown) could haul 10-12 laden sledges
full of logs on each trip. They required a 4 man crew to operate, an
engineer, a fireman, a steersman, and a 'conductor'
Some close up pictures of the various Lombard Log Hauler features:
boiler backhead and cab layout
slightly different view of the backhead
builder's photo 3/4 rear showing the fuel bunker and hitch
online Specifications and parts list An invaluable techical source for the model builder!
The Phoenix Log Hauler, so similar, yet so different
Phoenix used a pair of vertical cylinders on each side to drive each
track independently, somewhat more complicated and costly to maintain.
They also used a slightly different steering mechanism.