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An example of such situation is when the regulator is closed suddenly, or the train passes through a tunnel. If a single line tunnel is poorly ventilated, a locomotive entering at high speed can cause a rapid compression of the air within the tunnel. This compressed air may enter the chimney with substantial force.
An H-style cap is a chimney top constructed from chimney pipes shaped like the letter H. It is an age-old method of regulating draft in situations where prevailing winds or turbulences cause downdraft and back-puffing. Although the H cap has a distinct advantage over most other downdraft caps, it fell out of favor because of its bulky design ...
An H-style cap (cowl) is a chimney top constructed from chimney pipes shaped like the letter H. It is an age-old method to regulate draft in situations where prevailing winds or turbulence cause downdraft and back-puffing. Although the H-cap has a distinctive advantage over most other downdraft caps, it fell out of favor because of its bulky looks.
In response to an 1857 patent infringement claim, Baldwin Locomotive Works compiled a diagram illustrating 57 different spark arresting chimney designs. [4] The most popular design was a bonnet chimney. The bonnet was a funnel-shaped sheet metal cone fitted over a conventional cylindrical chimney. The lower, small-diameter portion of the cone ...
The locomotives at the time employed either a single flue boiler or a single return flue, with the fire grate at one end of the flue. Because a single flue had to be wide to let the exhaust through, a blastpipe could lift the fire, pulling soot and sparks up the chimney.
In most cases there was only a single false funnel placed as the aftermost of the funnels. The false funnels did have more uses than simply aiding aesthetics however - a stoker who survived the sinking of the Titanic escaped the boiler room by ascending the false funnel, the aft funnel of Normandie housed the passengers' dog kennels, and Disney ...
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