I'm curious about this too!
Can you please post another picture flat, with the "National" text facing up? (i.e., won't be visible)
I would like to see both sides of the hinged part, specifically the bottom of the hinge area - is there space for product or liquid to fall out of the device?
It does appear (from what I can see) that the inside of one half of the 'egg shaped' portion is contoured to allow something to flow out of the device. (?!)
Also, can you tell if the little black "twist screw" was designed to hold another appurtenance or apparatus in place?
I'm trying to decide what function this side screw serves. (Not the large thumb-handle turn screw to attach the device to a countertop.)
I'm not convinced this is a coffee grinder.
It appears to be designed to operate horizontally (and a
much simpler version could be made vertically! - and has been many times over!!).
In a horizontal position, the coffee grounds would go everywhere - they would not stay in the 'egg' portion.
Furthermore, it would be impractical to try to close the lid (i.e., the two half 'egg' parts) without coffee beans flying everywhere.
Also, the large diameter internal screw thread has a set travel distance and no more. (You could not grind away on this thing until the cows came home!)
It also has a fairly aggressive kerf, meaning whatever screws in here is designed to install in a hurry. Looks to be about 3 turns, max.
And why the 'egg' shape? Maybe this contraption was made in the Art Deco days? I wonder if the egg shape is important to its function?
It's almost like this thing is designed to hold something to be operated on manually, with the product exiting the bottom of the device.
But whatever that something is, it's inserted into the machine before the egg lid is clamped shut, and is then either operated upon all at once, or possibly throughout the day (which means it would be designed so as not to drip, spill, dispense, etc.. until the operator of the device does something. Also, it would have to be non-perishable.
Likewise, a fruit press doesn't look right either. It would be pretty difficult to operate, and again, there are much simpler ways to do that job in a vertical format.
It's not clear to me that the hinge and closure clasp are well suited to the forces that might be applied during a pressing operation - especially considering the cross-section diameter of the large internal threaded section. Plus, the acids in some fruits will chemically react with the metal, causing them to taste funny, and could damage the equipment over time (pitting, etc..)
Maybe there is too much information here? Maybe the fact that it was found underneath a bar doesn't have anything to do with its function or purpose?
That said, the 'look' of the metal screams restaurant appliance of some sort. ?? Did the saloon have an attached restaurant of any kind? Any idea of the kinds of foods they might have served?
"Yes." This "might" be a coffee grinder - but I didn't see any online that even remotely look like this, and as I've already mentioned - this looks too unweildly to be a coffee grinder. I also agree it is missing some parts (for starters, whatever goes in the screw thread section).
I tried to think of what other kinds of bartender's applicances might be kept under a bar -- but none of them seem to "fit" this device very well:
Champagne or wine bottle cork puller? - No.
Bottle opener with retainer? - Not horizontal anyway.
Nut cracker or grinder of any sort? - Possibly, buy why this way?
Something to form objects into a half-egg shape? - Seems pretty unlikely.
This is the sort of thing that once you know what it is, it'll be like "Duh, well of course that's what it is!"
