Nick Chillianis posted:One point to mention is that the New York Central used the Viloco Whistle Actuator which was sometimes called a "push-button whistle". A small thumb lever in the cab controlled an air operated device that opened the whistle valve. This rendered the steam whistle an on-off device and did not allow for any whistle "artistry" by the engineer.
Thank you Nick.
The use of the Viloco actuator is very apparent on the "Living with Steam" recordings