Those Would Be "Bock" Extractors
Ounce quite a common sight in laundromats, now for the most gone. Banished due to concerns over injury and legal claims resulting thereof. Many laundromat owners whom do not own their own building find it written into the lease they cannot install such extractors at all, and or without giving due notice to landlord. Also many laundry consultants and franchise operators won't allow them as well.
Still, being as the above may, you can still find them around in some areas. IIRC, parts are hard to come by for some older units, and or repairs are too expensive.
Personally given the rather woeful extraction of many modern laundromat front loaders, would love to see them come back in a big way. My Miele spins laundry much drier than the SQ machines at our local, and that saves anywhere from 10 to 15 minutes in drying time.