Since it has been determined that Universal made meat grinders, I wonder if it could be a sausage stuffing attachment for a sausage grinder. Searched for image of one but couldn't find any.
I have no idea what it is, but it’s marked with the “Universal” logo used by Landers, Frary & Clark of New Britain, Connecticut for housewares and other assorted items. They were in business from 1865 until 1965, when their assets were sold to General Electric.
The product range (over the years) has been huge, including:
Cutlery, tableware, knives, shears, razors and such; cookware; weighing scales; plumbing fixtures, water cooler and beer cocks; appliances (electric and non-electric) including irons, toasters, waffle makers, food mixers/processors, juicers, vegetable slicers, can openers, coffee grinders & percolators; ovens & portable stoves; refrigerators; vacuum bottles & thermos flasks; washing machines with ‘sterilators’ & other home laundry equipment; vacuum cleaners; towel racks & other bathroom fixtures; hair dryers & curling tongs; display cases; mouse traps and ice skates!
So it does have a bottom on the metal part, and it does appear to have tiny holes in it. The metal bottom is open. It does look like it was supposed to be an adapter to something. Just not sure what.
Does the metal part (bottom?) act as a bowl? Thinking it may have been used to heat or burn some liquid and allow the fumes to escape the small flume (top?) on the right of your picture.
Looks like part of a coffee grinder, I can't find an image of this exact one, but a lot of them had glass jars at the top (like a hopper, which would make sense for yours with the funnel at top) and one at the bottom to catch the grinds. I guess a lot of people just used a ball jar on top, but I don't see how you'd put it on without spilling the beans everywhere...
It may be helpful for you to show photos looking up into the metal part or down into the glass. Or maybe through the whole thing as though looking through a telescope.