. Science of railways . BABCOCK SAFETY WATER GAUGE The Babcock water gauge is so constructed as to haveno opening whatever into the cab. When the tubular glassbreaks, every particle of glass is ejected through a pipe thatleads below the deck. The reason why the glass cannotescape into the cab is because there are two windows ofplate glass at each opening instead of only one and the innerglass is fixed at such an angle from the tubular glass thatonly a glancing blow can be struck on it by the particles,of the exploding tube. 138 LOCOMOTIVE APPLIANCES. This breaks the force and the liability of
. Science of railways . BABCOCK SAFETY WATER GAUGE The Babcock water gauge is so constructed as to haveno opening whatever into the cab. When the tubular glassbreaks, every particle of glass is ejected through a pipe thatleads below the deck. The reason why the glass cannotescape into the cab is because there are two windows ofplate glass at each opening instead of only one and the innerglass is fixed at such an angle from the tubular glass thatonly a glancing blow can be struck on it by the particles,of the exploding tube. 138 LOCOMOTIVE APPLIANCES. This breaks the force and the liability of cracking theinner plate; but even if it should be broken it absorbs theforce of the blow and the outer plate still stands to preventthe particles of glass from being blown into the cab. WATER TUBE. Sectional View o is unnecessary togk,»i; *=lth this protector,plaie «,ass. carry a stock of special ^protectingThe glass can be cut from ordinary LOCOMOTIVE APPLIANCES. 339
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