<titlePart> <text>SECTION B <emdash/> PERFORMING OPERATIONS</text> </titlePart> <titlePart> <text>TRANSPORTING</text> </titlePart> LIQUID/LIQUID, LIQUID/GAS OR GAS/GAS SEPARATION Method General operations by centrifugal force, using centrifuges or free-vortex apparatus using magnetic or electrostatic effect Apparatus General operations by centrifugal force, using centrifuges or free-vortex apparatus , using magnetic or electrostatic effect SOLID/LIQUID OR SOLID/GAS SEPARATION Method General operations by centrifugal force using centrifuges or free-vortex apparatus using magnetic or electrostatic effect Apparatus General operations by centrifugal force using centrifuges or free-vortex apparatus , using magnetic or electrostatic effect SOLID/SOLID SEPARATION Method Dry methods material in bulk Individual sorting Screening, sifting, pneumatic sorting using pneumatic tables or jigs by magnetic or electrostatic effect by centrifugal force using centrifuges or free-vortex apparatus Wet methods General operations flotation, differential sedimentation screening Combinations Dry methods - wet methods Apparatus Dry methods material in bulk Individual sorting Screening, sifting, pneumatic sorting using pneumatic tables or jigs by magnetic or electrostatic effect by centrifugal force using centrifuges or free-vortex apparatus , Wet methods General operations flotation, differential sedimentation screening Combinations Dry methods - wet methods <titlePart> <text>SHAPING</text> </titlePart> <titlePart> <text>MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL</text> </titlePart> <titlePart> <text>PUNCHING METAL</text> <entryReference>casting, powder metallurgy <sref ref="B22"/></entryReference> <entryReference>shearing <sref ref="B23D"/></entryReference> <entryReference>working of metal by the action of a high concentration of electric current <sref ref="B23H"/></entryReference> <entryReference>soldering, welding, flame-cutting <sref ref="B23K"/></entryReference> <entryReference>other working of metal <sref ref="B23P"/></entryReference> <entryReference>punching sheet material in general <sref ref="B26F"/></entryReference> <entryReference>processes for changing of physical properties of metals <sref ref="C21D"/>, <sref ref="C22F"/></entryReference> <entryReference>electroforming <sref ref="C25D0001000000"/></entryReference> </titlePart> This class does not cover: combinations of operations covered by different subclasses of class , which are covered by subclass ; combinations of operations covered by any particular subclass of class with operations covered by other classes, e.g. with operations involving removal of material, which are also covered by subclass , except that if the operations covered by the other classes are subsidiary to the operations properly covered by a single subclass of the combination is classified in that subclass. Processes of a kind covered by this class but applied to non-metallic materials are classified in this class if they are applicable to metal and cannot be classified fully in another class. <titlePart> <text>MAKING FORGED OR PRESSED PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS, WHEELS</text> <entryReference>making particular articles by working sheet metal without essentially removing material <sref ref="B21D"/></entryReference> <entryReference>processing wire <sref ref="B21F"/></entryReference> <entryReference>making pins, needles or nails <sref ref="B21G"/></entryReference> <entryReference>making particular articles by rolling <sref ref="B21H"/></entryReference> <entryReference>forging machines, pressing machines, hammering machines, in general <sref ref="B21J"/></entryReference> <entryReference>making chains <sref ref="B21L"/></entryReference> <entryReference>plating <sref ref="B23K"/></entryReference> </titlePart> This subclass covers only forging, pressing, or hammering operations which are specially adapted for use in the manufacture of particular objects and which are not essentially combined with any different metal-working operation unless the latter is a subsidiary operation performed in the same machine. MAKING MACHINE ELEMENTS OR TOOLS , , , MAKING RAILS , MAKING LOCKSMITHS' OR BLACKSMITHS' GOODS , MAKING OTHER ARTICLES , , , , UNITING OF COMPONENTS ACCESSORIES, AUXILIARY DEVICES , , <titlePart> <text>Making particular articles by forging, pressing, or hammering</text> </titlePart> <titlePart> <text>Equipment therefor</text> </titlePart> <titlePart> <text>Making machine elements</text> </titlePart> <titlePart> <text>balls, rolls, or rollers, e.g. for bearings</text> </titlePart> <titlePart> <text>ball-races</text> </titlePart> <titlePart> <text>cages for bearings</text> </titlePart> <titlePart> <text>axles or shafts</text> </titlePart> <titlePart> <text>crankshafts</text> </titlePart> <titlePart> <text>of cylindrical form</text> </titlePart> <titlePart> <text>of specially-shaped cross-section</text> </titlePart> <titlePart> <text>fittings</text> </titlePart> <titlePart> <text>parts of pipe or hose couplings</text> </titlePart> <titlePart> <text>pistons or plungers</text> </titlePart> <titlePart> <text>valve parts</text> </titlePart> <titlePart> <text>poppet valves, e.g. for internal-combustion engines</text> </titlePart> <titlePart> <text>valve bodies</text> </titlePart> <titlePart> <text>valve seats</text> </titlePart> <titlePart> <text>housings or supporting parts, e.g. axle housings, engine mountings</text> </titlePart> <titlePart> <text>wheels</text> </titlePart> <titlePart> <text>discs</text> </titlePart> <titlePart> <text>with gear-teeth</text> </titlePart> <titlePart> <text>discs, e.g. disc wheels</text> </titlePart> <titlePart> <text>wheels with spokes</text> </titlePart> <titlePart> <text>with blades</text> </titlePart> <titlePart> <text>rims</text> </titlePart> <titlePart> <text>tyres</text> </titlePart> <titlePart> <text>hubs</text> </titlePart> <titlePart> <text>pulleys, e.g. cable pulleys</text> </titlePart> <titlePart> <text>bolts, studs, or the like</text> <entryReference>making screw-thread <sref ref="B21K0001560000"/></entryReference> <entryReference>making U-bolts <sref ref="B21K0001740000"/></entryReference> </titlePart> <titlePart> <text>with heads</text> </titlePart> <titlePart> <text>Machines working with hammers, e.g. beating in a radial direction, for forming heads</text> </titlePart> <titlePart> <text>Trimming or shearing formed heads, e.g. working with dies</text> </titlePart> <titlePart> <text>double-ended, e.g. with heads on both ends</text> <entryReference>forming heads <sref ref="B21K0001460000"/></entryReference> </titlePart> <titlePart> <text>with grooves or notches</text> </titlePart> <titlePart> <text>screw-threaded elements</text> </titlePart> <titlePart> <text>rivets</text> </titlePart> <titlePart> <text>hollow or semi-hollow rivets</text> </titlePart> <titlePart> <text>special rivets, e.g. with electrical contacts</text> </titlePart> <titlePart> <text>nuts</text> <entryReference>making screw-thread <sref ref="B21K0001560000"/></entryReference> </titlePart> <titlePart> <text>from strip bars</text> </titlePart> <titlePart> <text>from round or profiled bars</text> </titlePart> <titlePart> <text>of special shape, e.g. self-locking nuts, wing nuts</text> </titlePart> <titlePart> <text>hooks, e.g. crane hooks, railway track spikes</text> <entryReference>making nails in general <sref ref="B21G"/></entryReference> </titlePart> <titlePart> <text>forked members or members with two or more limbs, e.g. U-bolts, anchors</text> </titlePart> <titlePart> <text>elements not mentioned in one of the preceding groups</text> </titlePart> <titlePart> <text>Making engine or like machine parts not covered by <sref ref="B21K0001000000"/></text> </titlePart> <titlePart> <text>Making propellers or the like</text> </titlePart> <titlePart> <text>cylinder heads</text> </titlePart> <titlePart> <text>blades, e.g. for turbines</text> </titlePart> <titlePart> <text>Upsetting of blade roots</text> </titlePart> <titlePart> <text>Making tools or tool parts, e.g. pliers</text> </titlePart> <titlePart> <text>drilling-tools or other tools for making or working on holes</text> </titlePart> <titlePart> <text>twisting-tools, e.g. drills, reamers</text> </titlePart> <titlePart> <text>Dressing, e.g. sharpening rock drills</text> </titlePart> <titlePart> <text>drifting tools</text> </titlePart> <titlePart> <text>Forming drill-bit shanks</text> </titlePart> <titlePart> <text>other cutting tools</text> <entryReference>cutlery wares <sref ref="B21K0011000000"/></entryReference> </titlePart> <titlePart> <text>hand hammers</text> </titlePart> <titlePart> <text>tools for turning nuts</text> </titlePart> <titlePart> <text>handles or parts therefor</text> </titlePart> <titlePart> <text>Making working faces of dies, either recessed or outstanding</text> </titlePart> <titlePart> <text>Making railway appurtenances</text> </titlePart> <titlePart> <text>Making vehicle parts</text> </titlePart> <titlePart> <text>parts for permanent way</text> <entryReference>spikes <sref ref="B21K0001720000"/></entryReference> </titlePart> <titlePart> <text>switch tongues</text> </titlePart> <titlePart> <text>sleepers</text> </titlePart> <titlePart> <text>base plates for rails, e.g. chairs</text> </titlePart> <titlePart> <text>rail joints</text> </titlePart> <titlePart> <text>parts for locomotives or vehicles, e.g. frames, underframes</text> </titlePart> <titlePart> <text>brake rigging or brake parts</text> </titlePart> <titlePart> <text>Reconditioning railroad accessories, e.g. rails</text> </titlePart> <titlePart> <text>Making cutlery wares</text> </titlePart> <titlePart> <text>Making garden tools or the like</text> </titlePart> <titlePart> <text>knives</text> </titlePart> <titlePart> <text>spoons</text> </titlePart> <titlePart> <text>table forks</text> </titlePart> <titlePart> <text>scissors</text> </titlePart> <titlePart> <text>sickles</text> </titlePart> <titlePart> <text>scythes</text> </titlePart> <titlePart> <text>axes</text> </titlePart> <titlePart> <text>picks</text> </titlePart> <titlePart> <text>spades</text> </titlePart> <titlePart> <text>shovels</text> </titlePart> <titlePart> <text>rakes</text> </titlePart> <titlePart> <text>garden forks</text> </titlePart> <titlePart> <text>Making locksmiths' goods, e.g. handles for cases</text> </titlePart> <titlePart> <text>hinges</text> </titlePart> <titlePart> <text>Making blacksmiths' goods</text> </titlePart> <titlePart> <text>horse-shoes</text> </titlePart> <titlePart> <text>accessories therefor</text> </titlePart> <titlePart> <text>caulks</text> </titlePart> <titlePart> <text>metal attachments for footwear, e.g. wear-resisting plates</text> </titlePart> <titlePart> <text>Making sport articles, e.g. skates</text> </titlePart> <titlePart> <text>Making articles for agricultural machinery</text> </titlePart> <titlePart> <text>plough blades</text> </titlePart> <titlePart> <text>ploughshares</text> </titlePart> <titlePart> <text>Making hollow articles not covered by any single one of groups <mref ref="B21K0001000000" endRef="B21K0019000000"/></text> <entryReference>essentially from sheet-metal or uniform thin-walled tubes <sref ref="B21D"/>, e.g. <sref ref="B21D0041000000"/>, <sref ref="B21D0051000000"/></entryReference> </titlePart> <titlePart> <text>Producing blanks in the shape of discs or cups as semi-finished articles for making hollow articles, e.g. to be deep-drawn or extruded</text> </titlePart> <titlePart> <text>Shaping thin-walled hollow articles, e.g. cartridges</text> </titlePart> <titlePart> <text>Shaping thick-walled hollow articles, e.g. projectiles</text> </titlePart> <titlePart> <text>Shaping hollow articles with different cross-section in longitudinal direction, e.g. nozzles, spark-plugs</text> </titlePart> <titlePart> <text>cone-shaped or bell-shaped articles, e.g. insulator caps</text> </titlePart> <titlePart> <text>Shaping end portions of hollow articles</text> </titlePart> <titlePart> <text>closed or substantially-closed ends, e.g. cartridge bottoms</text> </titlePart> <titlePart> <text>Remodelling hollow bodies with respect to the shape of the cross-section</text> <entryReference>remodelling end portions only <sref ref="B21K0021120000"/></entryReference> </titlePart> <titlePart> <text>Making other articles</text> </titlePart> <titlePart> <text>members of endless tracks, e.g. track guides, shoes</text> <entryReference>making from sheet-metal <sref ref="B21D"/></entryReference> </titlePart> <titlePart> <text>flanged articles</text> <entryReference><sref ref="B21K0001280000"/> takes precedence</entryReference> <entryReference>flanging tubes <sref ref="B21D"/></entryReference> </titlePart> <titlePart> <text>Uniting components to form integral members, e.g. turbine wheels and shafts, caulks with inserts, with or without shaping of the components</text> <entryReference>uniting by interference- or press-fitting <sref ref="B23P0011020000"/>, <sref ref="B23P0019020000"/></entryReference> </titlePart> <titlePart> <text>Accessories</text> </titlePart> <titlePart> <text>Auxiliary devices</text> </titlePart> <titlePart> <text>Handling devices, e.g. for feeding, aligning, discharging</text> </titlePart> <titlePart> <text>Cutting-off means</text> </titlePart> <titlePart> <text>Arrangement thereof</text> </titlePart> <titlePart> <text>Feeding devices for rods, wire, or strips</text> </titlePart> <titlePart> <text>allowing successive working steps</text> </titlePart> <titlePart> <text>Cutting-off means</text> </titlePart> <titlePart> <text>Arrangement thereof</text> </titlePart> <titlePart> <text>Arrangements for heating or cooling during processing</text> <entryReference>for preparing metal stock to be forged or pressed <sref ref="B21J0001060000"/></entryReference> <entryReference>heating equipment in general, <u>see</u> the appropriate subclasses, e.g. <sref ref="H05B"/></entryReference> </titlePart> <titlePart> <text>Control devices specially adapted for positioning tool carriers</text> </titlePart>