Coolspring Spotlight: 1917 600hp Snow

Check out the Coolspring Spotlight 1917 600hp Snow and happens to be one of the largest gas engines ever to be preserved in running condition!

| April/May 2020

This 1917 600hp Snow engine is a tandem, double-acting design, incorporating on a single crank throw two separate in-line (in tandem) cylinders.

At 75 feet long with an 18-ton, 18-foot-diameter flywheel, the 1917 600hp Snow is one of the largest gas engines ever to be preserved in running condition. The overall weight of the engine is estimated to be about 140 tons!

The Snow is housed in a building known as Exley Station, built in the fall of 2008 and named in memory of Clair Exley. Clair joined the museum staff and served six years on the Board of Directors. He loved the Snow as he remembered the Snow engines at Van, Pennsylvania, which he heard running during his childhood years. Retired from Joy Manufacturing Co. in Franklin, Pennsylvania, Clair was an excellent pipefitter. Unfortunately, his untimely passing prevented him from hearing this Snow run.


Thanks to the tireless efforts of many volunteers and generous contributions from many donors, the Snow engine achieved a very successful first run at about 10 p.m. on June 11, 2013. The museum officially dedicated the Snow engine exhibit on Oct. 18, 2013.

Prior to becoming a Worthington division, the Snow (later Snow-Holly) Steam Pump Works was organized in 1889 to build very large steam-powered pumping machinery. In 1898, it began building large gas-engine-driven natural-gas compressors, the first four being designed by National Transit’s chief engineer, John Klein.


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