Wascomat innards
I used to work on these machines back in the '70's and early '80's; structurally they were very sturdy and heavy. They used a "2-winding" motor. It had an 8-pole winding (850 r.p.m.) for tumble speed and a 2-pole winding (3450 r.p.m.) for spin. They used electromechanical timers which were huge and had lots of cams, and obtained their reverse tumble action via a set of timer cams and a pair of magnetic contactors. The motors were suceptible to getting detergent etc. in them, and when they failed they cost about $750 to replace or $700 to rewind (1984 prices!). I suspect that, like most other manufacturers, Wascomat has gone to microprocessor timers and inverter-drive 3-ø motors to get the speed variation, reversing, and higher spin speeds than what used to be possible.