In the small diameter spin can in twintubs, you get better spin rinsing if you stop the spinner, spray the water SLOWLY in to saturate the load (too fast and the water just runs over the top and into the outer drum); then when the whole spin can full of clothes is thoroughly wet, turn the spinner on to extract the rinse water.

Hoovermatic Deluxe twinnies in Australia did that automatically - you set the hose running slowly into the spinner, when the water level rises in the outer spin tub, a  pressure switch trips and starts the spinner. When the water had been spun and pumped away, the pressure switch resets and the spinner stops, ready for the next soaking. This would continue cycling indefinitely until you turned off the water and switched it to final spin.