The saw in the pictures Steve took (Great pic's BTW!), is not the saw described or pictured on the plaque.... I can't see a tilting mechanism in Steve's photos. My guess was this machine was in the building alright, but was used for an operation called "re-sawing" where giagundo trees were turned into flat sided keels, or planks were sliced from larger stock. What leads me to believe that is the presence of the roller sitting behind where the blade would be leaving the top blade wheel.
What is described and pictured in the plaque is properly called a shipsaw, as you can see from this link:
http://www.flickr.com/photos/jehvicvbc/1087308234/ (The picture is missing the bottom blade wheel and the floor mount casting.) The work table on a shipsaw does not tilt (As they do on all modern bandsaws.). The wheels and the blade tilted as a unit, so big heavy pieces of wood would stay put on the horizontal of the table, and not slide off. The tilting track is the big cast "C"
How much wood would a wood duck duck, if a wood chuck could chuck wood?