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Why did some classes of Steam Locomotives have Air Compressors/Pumps on the front of their smoke boxes, and what did the compressor/pump do? : r/trains
![The front end of the steam locomotive 'Princess Elizabeth' showing the pump for the air braking system Stock Photo - Alamy The front end of the steam locomotive 'Princess Elizabeth' showing the pump for the air braking system Stock Photo - Alamy](https://c8.alamy.com/comp/CT0EGH/the-front-end-of-the-steam-locomotive-princess-elizabeth-showing-the-CT0EGH.jpg)
The front end of the steam locomotive 'Princess Elizabeth' showing the pump for the air braking system Stock Photo - Alamy
![Multi-Stages Oil Free Turbo Centrifugal Compressor for Water Steam - China Oil Free Air Compressor and Oilless Air Compressor Multi-Stages Oil Free Turbo Centrifugal Compressor for Water Steam - China Oil Free Air Compressor and Oilless Air Compressor](https://image.made-in-china.com/2f0j00zOgilvsknhoU/Multi-Stages-Oil-Free-Turbo-Centrifugal-Compressor-for-Water-Steam.jpg)
Multi-Stages Oil Free Turbo Centrifugal Compressor for Water Steam - China Oil Free Air Compressor and Oilless Air Compressor
![Why did some classes of Steam Locomotives have Air Compressors/Pumps on the front of their smoke boxes, and what did the compressor/pump do? : r/trains Why did some classes of Steam Locomotives have Air Compressors/Pumps on the front of their smoke boxes, and what did the compressor/pump do? : r/trains](https://preview.redd.it/v6vwv3qji0d91.jpg?width=220&format=pjpg&auto=webp&s=c24cb58e8f28f8f221f1ec7c35166ae48df33e64)