with auxiliary water tubes inside the fire-box

Full Title

Steam boilers of fire-box type, i.e. boilers where both combustion chambers and subsequent flues or fire tubes are arranged within the boiler body > Locomobile, traction-engine, steam-roller, or locomotive boilers > with auxiliary water tubes inside the fire-box

Child Classifications

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• F22B 13/12 the auxiliary water tubes lining the fire-box