I have the date incorrect and the wrong Leighton [my bad]. Should be Thomas Leighton c. 1839. Lots of Leighton's in the glass business in this period [all related].
The "carafes" are very nice. I do not know why the author uses that term. For forever and a day the have been called a bar bottle or "decanter with bar lip" and that is how they are listed in the catalogue. Not ground for a stopper. A metal pourer would be fitted to the top, cork lined to stay to the bottle. Some involved a type of vertical cage with a small marble inside, on the shelf the marble would cover the opening inside the pourer, when tilted to pour the marble would fall forward to the top of the cage and allow the goods to come out.The fancier the pour, the better the goods? East Cambridge is a colloquial term for N.E.G.co. A bit of poor editing I think.
I get the slide rule iphone analogy completely and will remember it.