Looks like it a lotI could be wrong, but I think it looks like the yoke for a throwout bearing from an old transmission... (not the part marked with the arrow, the one toward the bottom of the pic) <img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=935492"/>
Nope,Any markings on it? Maybe some measurements and/or something for scale?
It is about 10.5 to 12 in long and it is solid brassHOW big is it? Is it Brass?
You think so?Looks like an antique tractor clutch fork.
Maybe off of a heavy machineModern ones are mostly stamped (heavy) steel. But having a bronze, rather than brass, contact points isn't uncommon. But are many other industrial applications (non automotive) for what's essentially a shift fork, whether moving a "dog" gear or bearing. Essentially we all agree though that it moves something on a spinning shaft. I've seen them on lathes, drill presses, etc. where you want to shift gear ratio for different purposes. An my old snow blower has one to engage the auger.