How much detail do you want? I may be able to point you at some further info....
Try this item, diagram is at the end of the page.....
http://www.festipedia.org.uk/wiki/Fairlie%27s_Patent
I think there are a "few" images on flickr.......
By the way, I think that the Driver is on the left hand side as that is the platform side on the uphill journey.......makes it easier to see the guard.