When I was a kid, some friends of mine put up hay with a similar loader setup. I always thought it was a homemade loader, but seeing your photos, it probably was a Farmhand.
The loader was on a Massy-Harris that was pretty old, but very powerful, using a Continental flathead 6. Doing hay, first they would rake the loose hay into piles with a buck rake, and then they would pick up the piles with the loader"s long tines. At their barn, they had a hay chopper/blower hooked to another Massy-Harris by PTO. The only handling of the hay was a bit of pitchfork work to get it off the loader tines and onto the conveyor that took it to the chopper. My buddie"s Dad said he liked doing hay that way because there was very little waste, and it was a lot easier than bucking bales. And with the setup they had, it was pretty fast and lots cheaper than dealing with a baler.
The only real bad downside of having chopped hay was that it was EXTREMELY dusty, both while it was being chopped and blown into the barn, and also whenever you disturbed the hay in the barn to feed it. But the cows thought it was great and ate every bit of it.
Thanks for helping me remember an interesting way to do hay 50 years ago.