As Lot 6 lathes lack other than a 1918 patent date, these 8½" x 36" lathes may well have been introduced in either that year or a little later as, so far, non have been found dated between the start and near the end of WW1 (1914 and 1917).
Heavily built, the Lot 6 lathe was intended for serious work and equipped with a hardened and ground spindle that carried a substantial 17/8" x 8 t.p.i. nose thread.  The lathe was available for bench or stand mounting, of which the latter there were several options including basic legs, heavy box-type pedestals, a single-column plinth with foot-pedal and flywheel drive and yet another, this having two stout, cast-iron plinths and a line of three drawers across the top labelled Tools, Collets and Tools.
Lot 6 serial numbers ran from just over 100 to well over 7000 with the great majority appearing to have been worn out during WW2. To date (2021), only fifteen have been found - though, remarkably one has been discovered in as-new condition, its preservation due to its ownership by one family since new and warm, dry storage in one building since 1924..