Unimac Twin and Double Wash Tub Washers
Those Unimac washers come in two and single wash tub versions, both with centrifuge/rinse tub. Unimac is a commercial divison of Alliance Laundry systems and those washers are sold under their "car wash" line of appliances. IIRC model numbers are 101 and 102. Several have appeared on fleaBay in recent months ranging in condition from brand new to used.
IIRC all require 3 phase 220/240 volt power, but do not need to be bolted down (could be wrong on the last part).
Alliance markets these units for car washes to process lots of rags and mop heads rapidly, but our local laundry says many commercial and hotel laundries use them for doing everything from shirts to linens.
Operation is simple, you wash in the wash tubs, transfer the wet laundry to the spin tub for rinsing/spinning dry. The units have a patented "diffuser" spray that sends a fine mist of water through the laundry during a slow spin, it then ramps up to final spin speed to spin dry. Wash time, rinse and IIRC spin dry times are all user controled by timers.
Have posted several threads regarding these units before, if interested you could check the archives.
Launderess