Wolf Pup Lt loom

Thinking about getting one of these but cannot see the jack mechanism on any pics I've found.

Could someone that has one tell me is it a big spring going from center of lamms to shafts and cords each end of lamms going to shafts?

Is pulling shafts down instead of rising shed like baby wolf?     Don't want to buy unless sure I know what's what before. I talk to a dealer or seller.