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1902 8 HP Bates & Edmonds Engine

A 1902 8 HP Bates & Edmonds engine with generating set on display at the Coolspring Power Museum.

| June/July 2013

  • Bates And Edmonds
    This 8 HP Bates & Edmonds is part of a generating set made by Garwood Co.
    Photo By Christian Williams

  • Bates And Edmonds

Manufacturer: Bates & Edmonds Motor Co., Lansing, MI
Year: 1902
Serial Number: 11002
HP: 8
Bore: NA
Stroke: NA
Ignition: Spark plug
Governing: Throttle

This generating set was made by the Garwood Co. of Garwood, N.J., and it incorporates an 8 HP engine made by the Bates & Edmonds Co. of Lansing, Mich. The engine has a Fairbanks nameplate on it; Fairbanks was a merchandiser of various brands of gas engines including Bates & Edmonds, Callahan and others.

The engine represents an early line of engines produced by Bates & Edmonds. One outstanding feature on the engine is the valve operating mechanism. Instead of having cams on the camshaft, this engine employs two eccentrics. Those eccentrics are connected through eccentric rods to bell cranks on shafts on top of the cylinder head. On the other end of those shafts are two fingers referred to as alligator links. The fingers push down on tappets, which in turn push down on both the intake and exhaust valve stems. “By using this alligator link mechanism, you can get cam-like action without having to use cams,” Coolspring President Clark Colby says. “They eliminated the wear that was normally associated with cams and exchanged that for a little added complexity, and ended up with a very quiet valve train.”

This particular engine has a throttling governor, which would be normal for electric lighting service, and it shows very little wear so it’s hard to know how often it was used.

Get the whole story of Coolspring’s acquisition of this engine in Coolspring Power Museum: The History of the Bates & Edmonds Engine.

Read more about this engine and 38 others in the book, Coolspring, published by Gas Engine Magazine. Order this book from the Gas Engine Magazine store: Coolspring.


Gas Engine Magazine A_M 16Gas Engine Magazine is your best source for tractor and stationary gas engine information.  Subscribe and connect with more than 23,000 other gas engine collectors and build your knowledge, share your passion and search for parts, in the publication written by and for gas engine enthusiasts! Gas Engine Magazine brings you: restoration stories, company histories, and technical advice. Plus our Flywheel Forum column helps answer your engine inquiries!

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