Packard used the same Delco parts for the starter switch. ****** When properly adjusted, the starter should engage with half of the pedal travel. Full pedal travel disengages the choke. So, That would conflict with a cold start, We know the nailhead needs a choke until warmed up... Mine does at least, it doesn't run well until it reaches 150 deg or so. As far as when the pedal start was introduced, the year was 1936 or before. Dad's '36 Buick had a factory pedal start