Not necessarily anything new, gathering some data, don't want to lose it
Here is something showing the shape of your big vice, but not much more yet.
Links to this patent ( no pic), and mentions 2 patents which are listed below (this does not seem to translate to a US patent, unlike the other two)
183,263. Jerrim, J. H. April 25, 1921. Vices.-In a vice comprising a fixed jaw and a movable jaw slidable within an attachment part of the fixed jaw, the movable jaw consists of a pair of pivotal members adapted to be locked in adjusted position. As shown the movable jaw a, slida.ble within the...
patents.google.com
There is a 1939 reference in
The Commonwealth Engineer to the Fixie vise, much later than all the stuff below, but its only snippet view, and nothing shows up legibly. Can't find it at Archive dot org
Wrong shape vise
But the GB patent is here
122,063. Jerrim, J. H. Feb. 13, 1918. Vices.-Machine and other vices or work-holders of the type having jaws with adjustable parts to conform to the shaft of irregular work, are provided with pivoted jaw members independently adjustable and capable of being locked in the adjusted positions. As...
patents.google.com
& here
143,549. Jerrim, J. H. May 8, 1919, [Convention date]. Addition to 122,063. Work-holders.-Consists in modifications of the work-holder described in the parent Specification, in which a locking-member simultaneously secures both the pivoted members forming the fixed jaw in their adjusted...
patents.google.com
Lists a range of sizes
Here is a US patent or three for the little fellow (lots of similar dated ones in other countries being skipped for now) None in DATAMP, or under his name. The big one didn't seem to get a US one, that I can find, yet.