The last three lines in the article posted by B100, give a clue almost as big as the "Railroad Vise"...
My Grandfather was the Chief Engineer of the Woodward Iron Company, in Birmingham, AL...
Right up the road from their factory...(They made cast iron ingots, cast iron pipe, and railroad rails...)...
Was TCI (The Tennessee Coal, Iron and Railway Company...)...located in the Bessemer and Ensley area of western Birmingham...
A little trivia...
The "Bessemer Process"---of injecting air into the molten steel to remove impurities---the invention of the Blast Furnace---did, I believe take place in Bessemer at either TCI or the U.S.Steel plant...hence the name "Bessemer Process"...
Lots of steel plants in the west end of Birmingham...
Why you ask...???
The central region of Alabama is, I believe, the only place on the planet, where coal, iron ore, and limestone, are found in very close proximity...
Coal---Iron Ore---Limestone are the three ingredients required to make iron and, after adding a blast of air...Steel!!!
And now---the reason for this history lesson...
As you know, Yrhmblsrvnt is an old fart, I'll be seventy next month...
I went to work with my Grandfather one day, when I was four or five (before 1950)...and I have a vague memory of a "roundish" vise in the Locomotive Shop that was twice as tall as I was, and twice as big as the Normal Railroad shop vise...I could hang on the normal vises...but they had a locomotive axle clamped it the "roundish huge vise"...and I'd hurt myself, if I messed with the "Big Dog"...I do remember that the big one was holding the axle in the vertical position, because I leaned up against it, and got grease all over my clothes...and a pounding from my Mother, when I got home...
I'm not saying it was the 695/725 pound Railroad Vise, but it damn sure could have been...