Jim,

I ahve seen one that was built into a step-stool type tool box. It was configured to where the starter switch was by-passed. The starter slid on a rail of some sort and the cone protruded thru the side of the box. When the nose of the plane is pushed into the cone it would slide the starter into a button type switch thus oprating the starter motor. I don't have any drawings for you. Hope this helps. It sure seemed alot safer than conventional methods

Tazz