Ok, ive looked and looked, even e mailed stanley (no response from their cust ass dept) May be somebody here knows, on the old green aladdin stanley thermos, the pour through stopper screws in, the cup screws in on top of that, but there is a bigger threaded part too, is there a bigger cup that can screw down on top of the original cup? Ill try to get a picture up
On older models there was a trim ring that was there, between the cup and thermos. It was threaded so it could be removed for cleaning. Most were lost, or not put back on as it was an un-necessary piece that would hold dirt. I think they stopped putting them on because of this, but the threads were left, either due to the expense of re-tooling and or they held the inside in.
The advent of convenience shops with coffee, AC power on job locations, and microwaves took me out of the thermos need. I had an old back one from my FIL, kids bought me a green one vintage style-new. I googled Stanley thermos lids, then clicked images and seemed you might be able to track down what you need via the image websites?
I busted many a thermos bottle for soup in lunch boxes. The glass liner could not take my abuse. Brad
I still have an old plaid Thermos picnic set, with two Thermos bottles and a box for snacks that my parents used on family vacations in the 1950s. Each Thermos bottle hadstwo or three nesting cups, but as far as I remember, only the largest screwed onto the top of the bottle.