Gas 1964 LKM Dryer
The auto-dry system on this dryer was a neat setup, you can see from your picture with the back panel removed some of the parts of the adjustable dryness control.
This dryer has a modulating 37,000 BTU gas burner and the auto-dry thromostat [ located under the dome at the bottom of the heater box ] closes when the input heat from the gas burner has modulated to a low enough point, this then turns the timer motor on and advances the timer through a cool down period and the dryer shuts off.
This round about system worked really well, the only adjustment that the user ever needed to make was an adjustment on the back of the dryer in the unlikely event you did not like the factory setting. There was also a little lever on the left side of the control console that said MAXIMUM AUTO DRY ON OFF if you selected on the auto dry thromostat had to stay satisfied for a much longer period of time to get the the timer into cool-down, this setting was recommended for hard to dry items like sleeping bags, pillows etc.
Over all these are very cool machines that work great, we have a pair in turquoise in our museum collection. In 1965 when the 65 LKMs came out the 65 LKMD was the first dryer WP ever built with a fully electronic dryness system and for a few months they built 1964 style LKMDs with this same EDS, out turquoise 64 LKM gas dryer is the electronic model.
John L.