I don't know for sure, but I suspect that you probably have cross as well as longitudinal feeds. Best thing is to see what does what by shifting into each position and spine the headstock by hand and see what moves and in which direction. There's a lot of style built into old machines like that. Enjoy the journey cleaning it up a little and making some chips, your world of potential projects just went nuclear........ Let's see some more pictures as you go along....