Re: brakes


Dennis Storzek
 

I've never read that the Westinghouse brake schedule designations had any meaning beyond just being a designation for the schedule of equipment, but they had to come from somewhere. The meaning of C and D in the K brake schedules are pretty obvious, as are several generations of locomotive equipment; 6ET equipment was used to equip Engines and Tenders, 14EL equipment was used on Electric Locomotives, and 24RL was used on Road Locomotives. However, Westinghouse avoided attaching any significance to the letters, which left them free to use the next letter in line, or a different letter, when they developed an upgrade. P was the designation for the passenger triple valve that was contemporary with the K freight brake, but the next improvement was L, and M and R were used on electric railway motor cars.

Dennis Storzek

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