Geared steam locomotive
A geared steam locomotive is a type of steam locomotive which uses gearing, usually reduction gearing, in the drivetrain, as opposed to the common directly driven design.
Branford Steam Railroad
Just as steam locomotives gave way to diesels on the line in the 1950s 
so too did the rolling stock change as the side-dump gondola cars gave way to 
triple-bay hopper cars lettered for the New Haven 
Trap Rock Company. Whereas the steam locomotives had been lettered for the 
same company ("e.g." steam locomotive No. 43 carried the words 
"N.H. Trap Rock Co." on her saddle tank), some of the new diesels 
ironically carried the lettering of "The Branford Steam Railroad" 
despite the fact that it no longer was a steam railroad.