Vertical "Frost Proof " Engines

    These unusual engines were first available starting in 1905.  Only built in 1 and 2 1/2 hp, they were never popular.  They were not light either, the 1 hp weighing in at 540 lbs and the 2 1/2 hp coming in at 700 lbs.  Advertised as "Open Jacket Frost Proof" engines the cylinder and hopper were cast in a single piece and the fuel tank was in the base.  The very first engines had split hub double bolt flywheels but were quickly changed to a solid hub design.  A cam driven fuel pump supplied fuel to a simple overflow mixer.  These engines had a unique rocker arm that also incorporated the ignitor trip and valve lock slot.  Very few of these engines were built and they were quickly replaced by the Double Efficiency line.

The 2 1/2 hp gasoline engine.

A 1 hp engine on factory hand trucks.

This 2 1/2 hp Vertical is running a Baldwin cement mixer.