<titlePart> <text>SECTION F <emdash/> MECHANICAL ENGINEERING</text> </titlePart> <titlePart> <text>LIGHTING</text> </titlePart> <titlePart> <text>HEATING</text> </titlePart> <titlePart> <text>WEAPONS</text> </titlePart> <titlePart> <text>BLASTING</text> </titlePart>

<titlePart> <text>SECTION F <emdash/> MECHANICAL ENGINEERING</text> </titlePart> <titlePart> <text>LIGHTING</text> </titlePart> <titlePart> <text>HEATING</text> </titlePart> <titlePart> <text>WEAPONS</text> </titlePart> <titlePart> <text>BLASTING</text> </titlePart> MACHINES positive displacement rotary or oscillating piston liquid and elastic fluid or elastic fluid liquid only reciprocating piston or other liquid and elastic fluid or elastic fluid liquid only non-positive displacement liquid and elastic fluid or elastic fluid liquid only ENGINES positive displacement rotary or oscillating piston liquid and elastic fluid or elastic fluid liquid only reciprocating piston or other liquid and elastic fluid or elastic fluid liquid only non-positive displacement liquid and elastic fluid or elastic fluid liquid only PUMPS positive displacement rotary or oscillating piston reciprocating piston or other non-positive displacement <titlePart> <text>LIGHTING</text> </titlePart> <titlePart> <text>HEATING</text> </titlePart> <titlePart> <text>STEAM GENERATION</text> <entryReference>chemical or physical apparatus for generating gases <sref ref="B01J"/></entryReference> <entryReference>chemical generation of gas, e.g. under pressure, Section C</entryReference> <entryReference>removal of combustion products or residues, e.g. cleaning of the combustion contaminated surfaces of tubes of boilers, <sref ref="F23J"/></entryReference> <entryReference>generating combustion products of high pressure or high velocity <sref ref="F23R"/></entryReference> <entryReference>water heaters not for steam generation <sref ref="F24H"/>, <sref ref="F28"/></entryReference> <entryReference>cleaning of internal or external surfaces of heat-transfer conduits, e.g. water tubes of boilers, <sref ref="F28G"/></entryReference> </titlePart> In this class, the following term is used with the meaning indicated: "steam" covers also other condensable vapours, e.g. mercury, diphenyl, diphenyl oxide. <titlePart> <text>SUPERHEATING OF STEAM</text> <entryReference>steam-separating arrangements in boilers <sref ref="F22B0037260000"/></entryReference> </titlePart> <titlePart> <text>Steam superheating characterised by heating method</text> <entryReference>exothermal chemical reactions not involving a supply of free oxygen gas, apparatus or devices for using the heat therefrom <sref ref="F24J"/></entryReference> </titlePart> <titlePart> <text>with heat supply by hot flue gases from the furnace of the steam boiler</text> </titlePart> <titlePart> <text>by diverting flow or hot flue gases to separate superheaters operating in reheating cycle, e.g. for reheating steam between a high-pressure turbine stage and an intermediate turbine stage</text> </titlePart> <titlePart> <text>with heat supply predominantly by radiation</text> </titlePart> <titlePart> <text>from heated brickwork or the like</text> </titlePart> <titlePart> <text>with provision for superheating by throttling</text> </titlePart> <titlePart> <text>by mixing steam with furnace gases or other combustion products</text> </titlePart> <titlePart> <text>using heat generated by chemical reactions</text> </titlePart> <titlePart> <text>by using a separate heat source independent from heat supply of the steam boiler, e.g. by electricity, by auxiliary combustion of fuel oil</text> </titlePart> <titlePart> <text>Steam superheaters characterised by constructional features</text> </titlePart> <titlePart> <text>Details or component parts thereof</text> <entryReference>general aspects of enclosed heat-exchangers <sref ref="F28D"/></entryReference> </titlePart> <titlePart> <text>Controlling superheat temperature</text> <entryReference>control systems for steam boilers <sref ref="F22B"/></entryReference> <entryReference>regulating or controlling in general <sref ref="G05"/></entryReference> </titlePart> <titlePart> <text>Applications of combustion-control devices, e.g. tangential-firing burners, tilting burners</text> </titlePart> <titlePart> <text>by regulating flue gas flow, e.g. by proportioning or diverting</text> </titlePart> <titlePart> <text>by recirculating flue gases</text> </titlePart> <titlePart> <text>preventing furnace gas backflow through recirculating fan</text> </titlePart> <titlePart> <text>by displacing superheater sections</text> </titlePart> <titlePart> <text>by attemperating the superheated steam, e.g. by injected water sprays</text> <entryReference>spray-mixers <sref ref="B01F0005180000"/></entryReference> </titlePart> <titlePart> <text>by live steam</text> </titlePart> <titlePart> <text>by indirectly cooling or heating the superheated steam in auxiliary enclosed heat-exchanger</text> </titlePart> <titlePart> <text>by by-passing steam around superheater sections</text> </titlePart> <titlePart> <text>by combined controlling procedures</text> </titlePart> <titlePart> <text>Steam superheaters characterised by location, arrangement, or disposition</text> </titlePart> <titlePart> <text>in fire tubes</text> </titlePart> <titlePart> <text>in jackets around fire tubes</text> </titlePart> <titlePart> <text>in furnace tubes</text> </titlePart> <titlePart> <text>in fire-boxes</text> </titlePart> <titlePart> <text>in smoke-boxes</text> </titlePart> <titlePart> <text>in flues</text> </titlePart> <titlePart> <text>in water-tube boilers, e.g. between banks of water tubes</text> </titlePart>