1908 Baker Electric with 1906 Elmore Engine in foreground. "This is a three cylinder engine with a two stroke design. No valves are used. Instead fuel is directly injected into the cylinders and exhausted by ports in the cylender wall. It's timing is by a device known as the Rotary ??? Blade". A strong selling point for these engines was that the fact that it had only 3 moving parts per cylinder while a 4 cylinder, 4 stroke had 31 per cylender. Note the sweeping, highly efficient exhaust header.