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Jacobs Manufacturing Company22 East Dudley Town RoadBloomfield, CT 06002
Notable for: first practical mechanism for braking large trucks with engine compression as they descend long, steep grades at controlled speeds
Links:Owner site: http://www.jakebrake.com/ Cummins Engine site: http://www.cummins.com/
More about . . . The Jake Brake permits large trucks to descend long, steep grades at a controlled speed. It was the first practical mechanism for altering on demand the valve timing on a truck diesel engine, thereby converting the engine to a power absorbing machine. The modified engine can continue to power the truck in normal operation, allowing service brakes to remain cool for emergency situations. Invented by Clessie Lyle Cummins (1886-1968), this device (produced by the Jacobs manufacturing company since 1961) has contributed significantly to highway safety.
Visiting Info: regular hours: Mon-Fri 8-5:30
Ceremony Notes: October 1985
"I stay involved in ASME because it's good for my career."
— Jenn T. Dandrea, ASME Member since 2004
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