This style with the controls on the front was in the line, in both electric and gas drying models, for almost the whole run of the 27" model. The controls were limited by space. The gas drying model had a blower and was vented, of course, but the electric drying model used no circulator to move the air through a condensing chamber during dry so drying was slow, even with the hi-speed water extraction.
The WASH portion of the cycle was classic Bendix: Wash, drain, spray rinse, spin, deep rinse, drain, spin, deep rinse, drain, intermediate spin sequence, pause, spin stop.
When Philco downsized the Duomatic, they ran into problems with the tub crashing into the cabinet when they tried to do the slow spin that Bendix used in the 36" model with the three speed tranny. There was not a high enough cylinder speed or enough cabinet clearance at the low spin speed to even out the swings of a less than well-distributed load so they came up with a couple of systems using a two speed tranny, one of which was on our 27" machine. It was an interrupter that was only used in one timer increment after the last rinse drain. It allowed the cylinder to accelerate at the full power of the motor and tranny to a speed past the point where the instability was a problem, but interrupted the ramp up to spin after a few seconds. It made neat noises as it interrupted the acceleration causing the cylinder to move from spin to coasting with the tranny at tumble speed then back to spin to hold the spin speed down while providing maximum torque to the cylinder, sort of like what Easy did with the Accelux motor for their Surge 'n Rinse rinsing and extracting operation. This was repeated a couple of times with tumble periods in between before the tub stopped for the pause before going into a tumble then the final high speed spin. It was a necessary step to prevent the clothes from sticking to the cylinder when the spin stopped. If they did stick, they would not dry properly. Whenever the machine was tumbling, the interrupter made a little ticking noise as it turned.