VERTICAL "FROST-PROOF"

     Called the vertical "Frost-Proof" these engines were first available starting in 1905.  They were built in a 1hp size that weighed 540 lbs and a 2 1/2 hp that came in at a hefty 700 lbs.  The hopper and cylinder were a large single piece casting.  The crankcase was partly enclosed but had open sides as well as an access door.  An odd combination of materials were used for the connecting rod.  The cap was of cast bronze yet the rod was forged iron with a babbitt insert.  All bearings were lubricated by oil and although the main bearing caps have a place for an oil well cap to keep out dirt, some engines dispensed with this feature having it chiseled off the bearing cap casting.  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 with the cast sub base doubling as the fuel tank.  These engines utilized a pull rod system and featured a cleverly designed exhaust rocker that doubled as an ignitor trip.  An intake valve locking device was also operated by this rocker system.  Very few of these engines were built and they were quickly phased out of production.