Oilfield Oddity: Kootz and Stroehman Perfection Pumping Power

Wayne Spencer’s Kootz and Stroehman is an oilfield engine that proved to be an interesting challenge for this collector.

Kootz and Stroehman
The back end of Wayne Spencer’s Kootz & Stroehman showing the pumping gears and clutch for disengaging the crank arms.
Photos by Bill Vossler and Nikki Rajala