the water tubes being arranged sectionally in groups or in banks, e.g. bent over at their ends

Full Title

Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically > built-up from substantially-straight water tubes > involving a single upper drum and a single lower drum, e.g. the drums being arranged transversely > the water tubes being arranged sectionally in groups or in banks, e.g. bent over at their ends

Child Classifications

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• F22B 21/081
• F22B 21/083
• F22B 21/085
• F22B 21/086
• F22B 21/088