| Subclass |
| Title |
|
ClassTitle
|
| ===>
METALLURGICAL APPARATUS
|
| | | |
| 44 | ![[Patents]](../gifs/ps.gif) | PROCESS |
| 45 | ![[Patents]](../gifs/ps.gif) | . Plugging or tapping |
| 46 | ![[Patents]](../gifs/ps.gif) | . Cooling |
| 47 | ![[Patents]](../gifs/ps.gif) | . Tuyere operation |
| 48 | ![[Patents]](../gifs/ps.gif) | MEANS FOR CUTTING SOLID METAL WITH HEAT, E.G., BLOWPIPES |
| 49 | ![[Patents]](../gifs/ps.gif) | . With waste entrapping fluid |
| 50 | ![[Patents]](../gifs/ps.gif) | . Means for cutting continuously cast workpieces |
| 51 | ![[Patents]](../gifs/ps.gif) | . Means for removing surface material, e.g., scarfing |
| 52 | ![[Patents]](../gifs/ps.gif) | . . Having means to simultaneously scarf multiple sides of a workpiece |
| 53 | ![[Patents]](../gifs/ps.gif) | . . Having workpiece-contacting cutting means spacer |
| 54 | ![[Patents]](../gifs/ps.gif) | . With means for cutting tubular workpiece |
| 55 | ![[Patents]](../gifs/ps.gif) | . . Having torch mount secured within workpiece |
| 56 | ![[Patents]](../gifs/ps.gif) | . . Having means to circumrotate torch about workpiece |
| 57 | ![[Patents]](../gifs/ps.gif) | . . With means to rotate workpiece |
| 58 | ![[Patents]](../gifs/ps.gif) | . With pattern control means |
| 59 | ![[Patents]](../gifs/ps.gif) | . . With tape-control means |
| 60 | ![[Patents]](../gifs/ps.gif) | . . With automatic line-follower means |
| 61 | ![[Patents]](../gifs/ps.gif) | . . With means to rotate workpiece |
| 62 | ![[Patents]](../gifs/ps.gif) | . . Having articulated arm supporting torch |
| 63 | ![[Patents]](../gifs/ps.gif) | . . . With pantograph arm means |
| 64 | ![[Patents]](../gifs/ps.gif) | . . Having spaced, superposed templet |
| 65 | ![[Patents]](../gifs/ps.gif) | . With work supporting grate means |
| 66 | ![[Patents]](../gifs/ps.gif) | . Hand held, work riding torch |
| 67 | ![[Patents]](../gifs/ps.gif) | . With wheeled carriage torch mount |
| 68 | ![[Patents]](../gifs/ps.gif) | . . Having work contacting torch spacing means |
| 69 | ![[Patents]](../gifs/ps.gif) | . . With work-spanning torch mount |
| 70 | ![[Patents]](../gifs/ps.gif) | . Circle cutter |
| 71 | ![[Patents]](../gifs/ps.gif) | . Having torch solely supported by workpiece |
| 72 | ![[Patents]](../gifs/ps.gif) | . With cantilevered arm torch support |
| 73 | ![[Patents]](../gifs/ps.gif) | . . Having carriage-supported cantilevered arm |
| 74 | ![[Patents]](../gifs/ps.gif) | . Having adjuvant material feed |
| 75 | ![[Patents]](../gifs/ps.gif) | . . Solid material |
| 76 | ![[Patents]](../gifs/ps.gif) | . Having torch spacing means |
| 77 | ![[Patents]](../gifs/ps.gif) | . With torch mounting means |
| 78 | ![[Patents]](../gifs/ps.gif) | WITH CONTROL MEANS RESPONSIVE TO SENSED CONDITION |
| 79 | ![[Patents]](../gifs/ps.gif) | . By treated material sampling means |
| 80 | ![[Patents]](../gifs/ps.gif) | . With analyzer or computation means |
| 81 | ![[Patents]](../gifs/ps.gif) | . With means supplying a treating agent |
| 82 | ![[Patents]](../gifs/ps.gif) | . . Correlated flow of diverse fluents |
| 83 | ![[Patents]](../gifs/ps.gif) | . . . With flow rate sensor |
| 84 | ![[Patents]](../gifs/ps.gif) | . . . With means sensing moisture content |
| 85 | ![[Patents]](../gifs/ps.gif) | . . Individual control of diverse inputs |
| 86 | ![[Patents]](../gifs/ps.gif) | . . By means positioning dispenser |
| 87 | ![[Patents]](../gifs/ps.gif) | . With temperature sensor |
| 88 | ![[Patents]](../gifs/ps.gif) | . . In a fluid |
| 89 | ![[Patents]](../gifs/ps.gif) | . With pressure sensor |
| 90 | ![[Patents]](../gifs/ps.gif) | . With means responsive to condition of treated material |
| 91 | ![[Patents]](../gifs/ps.gif) | . . By means sensing weight or density of work |
| 92 | ![[Patents]](../gifs/ps.gif) | . . By means sensing position of work |
| 93 | ![[Patents]](../gifs/ps.gif) | . . . By means sensing presence or absence of work |
| 94 | ![[Patents]](../gifs/ps.gif) | . . . By means sensing level of molten liquid |
| 95 | ![[Patents]](../gifs/ps.gif) | . . . . By float means |
| 96 | ![[Patents]](../gifs/ps.gif) | WITH PROGRAMMED, CYCLIC, OR TIME RESPONSIVE CONTROL MEANS |
| 97 | ![[Patents]](../gifs/ps.gif) | . By timer |
| 98 | ![[Patents]](../gifs/ps.gif) | . . Having driven disk or drum |
| 99 | ![[Patents]](../gifs/ps.gif) | WITH RECORDING, INDICATING, INSPECTION OR MEASURING MEANS |
| 100 | ![[Patents]](../gifs/ps.gif) | . Having observation means |
| 101 | ![[Patents]](../gifs/ps.gif) | HAVING MEANS FOR LEACHING AND SUBSEQUENTLY PRECIPITATING A METAL |
| 102 | ![[Patents]](../gifs/ps.gif) | MEANS TREATING A CONTINUUM OF WORK |
| 103 | ![[Patents]](../gifs/ps.gif) | . With heating means |
| 104 | ![[Patents]](../gifs/ps.gif) | . . By joule effect |
| 105 | ![[Patents]](../gifs/ps.gif) | . . Discrete article continuum |
| 106 | ![[Patents]](../gifs/ps.gif) | . . Overlapped planar coil |
| 107 | ![[Patents]](../gifs/ps.gif) | . . In a molten material bath |
| 108 | ![[Patents]](../gifs/ps.gif) | . . In a muffle furnace |
| 109 | ![[Patents]](../gifs/ps.gif) | . . With cooling by contact with solid heat sink |
| 110 | ![[Patents]](../gifs/ps.gif) | . . In specific environment, e.g., vacuum |
| 111 | ![[Patents]](../gifs/ps.gif) | . . With fluid contact means |
| 112 | ![[Patents]](../gifs/ps.gif) | . . . In liquid bath |
| 113 | ![[Patents]](../gifs/ps.gif) | . . . In liquid spray |
| 114 | ![[Patents]](../gifs/ps.gif) | HAVING MEANS FOR CONTACTING A SOLID METALLIFEROUS MATERIAL OR METAL OBJECT WITH A LIQUID |
| 115 | ![[Patents]](../gifs/ps.gif) | . With means changing the shape of a treated object, e.g., roller means |
| 116 | ![[Patents]](../gifs/ps.gif) | . . Spring shaping means |
| 117 | ![[Patents]](../gifs/ps.gif) | . With means to prevent warping of treated object |
| 118 | ![[Patents]](../gifs/ps.gif) | . . Of a gear wheel |
| 119 | ![[Patents]](../gifs/ps.gif) | . . With heating of object |
| 120 | ![[Patents]](../gifs/ps.gif) | . By immersing an article to be treated in bath of molten material, e.g., salt bath |
| 121 | ![[Patents]](../gifs/ps.gif) | . With heating means, e.g., flame contact |
| 122 | ![[Patents]](../gifs/ps.gif) | . . By means treating metalliferous materials, e.g., ores |
| 123 | ![[Patents]](../gifs/ps.gif) | . . By heating means adapted to be inserted into a hollow object |
| 124 | ![[Patents]](../gifs/ps.gif) | . . By means heating selected areas of an object |
| 125 | ![[Patents]](../gifs/ps.gif) | . . . By means specialized to heat an article having an irregular contour (e.g., cams, gears) |
| 126 | ![[Patents]](../gifs/ps.gif) | . . . . By heating means configured to fit between adjacent gear teeth |
| 127 | ![[Patents]](../gifs/ps.gif) | . . Unitized heating and fluid contact means |
| 128 | ![[Patents]](../gifs/ps.gif) | . . By electric heating means |
| 129 | ![[Patents]](../gifs/ps.gif) | . . . Inductance type |
| 130 | ![[Patents]](../gifs/ps.gif) | . . Having bath for contacting the work with liquid |
| 131 | ![[Patents]](../gifs/ps.gif) | . . . With means to agitate or control temperature of bath |
| 132 | ![[Patents]](../gifs/ps.gif) | . . . Having work introducing elevator |
| 133 | ![[Patents]](../gifs/ps.gif) | . . . Having means to move work through bath |
| 134 | ![[Patents]](../gifs/ps.gif) | . By means contacting only selected areas of treated article with liquid |
| 135 | ![[Patents]](../gifs/ps.gif) | WITH CLEANING OR LUBRICATING MEANS |
| 136 | ![[Patents]](../gifs/ps.gif) | . Fluid injector cleaner |
| 137 | ![[Patents]](../gifs/ps.gif) | WITH MEANS TO COMMINUTE OR DISINTEGRATE SOLIDS |
| 138 | ![[Patents]](../gifs/ps.gif) | WITH MEANS TO PREHEAT GAS |
| 139 | ![[Patents]](../gifs/ps.gif) | . Having heat storage means, e.g., checkers, stroves |
| 140 | ![[Patents]](../gifs/ps.gif) | . By heat generating means |
| 141 | ![[Patents]](../gifs/ps.gif) | . By remote heat exchanger |
| 142 | ![[Patents]](../gifs/ps.gif) | GEOGRAPHIC OR STRUCTURAL INSTALLATION |
| 143 | ![[Patents]](../gifs/ps.gif) | . Having refining vessel with travelling support |
| 144 | ![[Patents]](../gifs/ps.gif) | WITH MEANS TREATING OR HANDLING GASES EXHAUSTED BY TREATING MEANS |
| 145 | ![[Patents]](../gifs/ps.gif) | . Having means to treat or handle gases evolving from rotary furnace |
| 146 | ![[Patents]](../gifs/ps.gif) | . By contacting gas with nonmetallic liquid |
| 147 | ![[Patents]](../gifs/ps.gif) | . . By liquid spraying |
| 148 | ![[Patents]](../gifs/ps.gif) | . By condensing and collecting a volatile constituent |
| 149 | ![[Patents]](../gifs/ps.gif) | . . Within evacuated chamber |
| 150 | ![[Patents]](../gifs/ps.gif) | . . Having molten metal splashing means |
| 151 | ![[Patents]](../gifs/ps.gif) | . . By cascading material evolving the gas |
| 152 | ![[Patents]](../gifs/ps.gif) | . . By indirect liquid heat exchange means |
| 153 | ![[Patents]](../gifs/ps.gif) | . . Having retort condenser |
| 154 | ![[Patents]](../gifs/ps.gif) | . . Vertical shaft furnace |
| 155 | ![[Patents]](../gifs/ps.gif) | . With heat exchanger, e.g., waste heat boiler |
| 156 | ![[Patents]](../gifs/ps.gif) | . By means recycling exhaust gas |
| 157 | ![[Patents]](../gifs/ps.gif) | . By separating particles from evolved gas |
| 158 | ![[Patents]](../gifs/ps.gif) | . Hood |
| 159 | ![[Patents]](../gifs/ps.gif) | . Offtake |
| 160 | ![[Patents]](../gifs/ps.gif) | COMBINED OR CONVERTIBLE |
| 161 | ![[Patents]](../gifs/ps.gif) | MEANS FOR EXTRACTING AND REFINING METAL |
| 162 | ![[Patents]](../gifs/ps.gif) | . With separate refining zone |
| 163 | ![[Patents]](../gifs/ps.gif) | . . With rotating heating vessel |
| 164 | ![[Patents]](../gifs/ps.gif) | . . With heated vertical extracting means |
| 165 | ![[Patents]](../gifs/ps.gif) | AMBULANT VESSEL |
| 166 | ![[Patents]](../gifs/ps.gif) | TREATING VESSEL WITH DISTINCT MOLTEN MATERIAL HOLDING MEANS, E.G., FOREHEARTH |
| 167 | ![[Patents]](../gifs/ps.gif) | THERMIT REACTION VESSEL |
| 168 | ![[Patents]](../gifs/ps.gif) | MEANS FOR TREATING ORES OR FOR EXTRACTING METALS |
| 169 | ![[Patents]](../gifs/ps.gif) | . Amalgam-type extraction means |
| 170 | ![[Patents]](../gifs/ps.gif) | . By means precipitating metal from solution |
| 171 | ![[Patents]](../gifs/ps.gif) | . By means applying heat to work, e.g., furnace |
| 172 | ![[Patents]](../gifs/ps.gif) | . . Fluidized zone |
| 173 | ![[Patents]](../gifs/ps.gif) | . . Rotary drum-type furnace |
| 174 | ![[Patents]](../gifs/ps.gif) | . . With safety device |
| 175 | ![[Patents]](../gifs/ps.gif) | . . With separate preheat chamber |
| 176 | ![[Patents]](../gifs/ps.gif) | . . With means for moving solid material to or through heating zone |
| 177 | ![[Patents]](../gifs/ps.gif) | . . . By means for moving charge through zone |
| 178 | ![[Patents]](../gifs/ps.gif) | . . . . Traveling grate |
| 179 | ![[Patents]](../gifs/ps.gif) | . . . . . With seal means |
| 180 | ![[Patents]](../gifs/ps.gif) | . . . . . Train of grate elements |
| 181 | ![[Patents]](../gifs/ps.gif) | . . . . Means forming cascading array |
| 182 | ![[Patents]](../gifs/ps.gif) | . . . By fluid current |
| 183 | ![[Patents]](../gifs/ps.gif) | . . . By power-driven means conveying solid charge into zone |
| 184 | ![[Patents]](../gifs/ps.gif) | . . . Bell and hopper type |
| 185 | ![[Patents]](../gifs/ps.gif) | . . With work supporting grate |
| 186 | ![[Patents]](../gifs/ps.gif) | . . With means for feeding fluids |
| 187 | ![[Patents]](../gifs/ps.gif) | . . . With flow regulating means |
| 188 | ![[Patents]](../gifs/ps.gif) | . . . With common outlet means to feed diverse fluids |
| 189 | ![[Patents]](../gifs/ps.gif) | . . . With means to cool fluid feeding means |
| 190 | ![[Patents]](../gifs/ps.gif) | . . With cooling of heating means |
| 191 | ![[Patents]](../gifs/ps.gif) | . . . By means cooling material discharge means |
| 192 | ![[Patents]](../gifs/ps.gif) | . . . By direct fluid contact |
| 193 | ![[Patents]](../gifs/ps.gif) | . . . By means embedded in heating means |
| 194 | ![[Patents]](../gifs/ps.gif) | . . . . Having means to facilitate removal of cooling means |
| 195 | ![[Patents]](../gifs/ps.gif) | . . With discharge means |
| 196 | ![[Patents]](../gifs/ps.gif) | . . . With trough-shaped outlet, e.g., runner |
| 197 | ![[Patents]](../gifs/ps.gif) | . . Shaft-type furnace, e.g., blast furnace |
| 198 | ![[Patents]](../gifs/ps.gif) | . . . Having external support |
| 199 | ![[Patents]](../gifs/ps.gif) | . . . Having specific top structure |
| 200 | ![[Patents]](../gifs/ps.gif) | MEANS FOR MELTING OR VAPORIZING METAL OR TREATING LIQUEFIED METAL |
| 201 | ![[Patents]](../gifs/ps.gif) | . Slag refining means |
| 202 | ![[Patents]](../gifs/ps.gif) | . Spray refining means |
| 203 | ![[Patents]](../gifs/ps.gif) | . By means specialized to puddle metal |
| 204 | ![[Patents]](../gifs/ps.gif) | . Means applying centrifugal force |
| 205 | ![[Patents]](../gifs/ps.gif) | . Means to melt and separate metal from mass of diverse constituents |
| 206 | ![[Patents]](../gifs/ps.gif) | . Means for melting-type material, e.g., Linotype |
| 207 | ![[Patents]](../gifs/ps.gif) | . By providing, treating or protecting environment, e.g., vacuum |
| 208 | ![[Patents]](../gifs/ps.gif) | . . By application of vacuum |
| 209 | ![[Patents]](../gifs/ps.gif) | . . . By upward flow of metal within treating zone |
| 210 | ![[Patents]](../gifs/ps.gif) | . . . . Recirculating material to its source |
| 211 | ![[Patents]](../gifs/ps.gif) | . . . Enclosed within casing |
| 212 | ![[Patents]](../gifs/ps.gif) | . Refining means with separate metal-melting zone |
| 213 | ![[Patents]](../gifs/ps.gif) | . Revolving drum-type furnace |
| 214 | ![[Patents]](../gifs/ps.gif) | . Reverberatory refining vessel, e.g., open hearth |
| 215 | ![[Patents]](../gifs/ps.gif) | . Continuous refining |
| 216 | ![[Patents]](../gifs/ps.gif) | . By means introducing treating material |
| 217 | ![[Patents]](../gifs/ps.gif) | . . Gaseous treating material |
| 218 | ![[Patents]](../gifs/ps.gif) | . . . Having fluid inlet formed in vessel wall, e.g., tuyere |
| 219 | ![[Patents]](../gifs/ps.gif) | . . . . Having intersecting streams converging on central axis of vertical furnace |
| 220 | ![[Patents]](../gifs/ps.gif) | . . . . Having porous outlet |
| 221 | ![[Patents]](../gifs/ps.gif) | . . . . By means to introduce diverse material |
| 222 | ![[Patents]](../gifs/ps.gif) | . . . . . Concentric flow paths |
| 223 | ![[Patents]](../gifs/ps.gif) | . . . . Having control means |
| 224 | ![[Patents]](../gifs/ps.gif) | . . . . Having tuyere formed in plug bottom |
| 225 | ![[Patents]](../gifs/ps.gif) | . . . Lance |
| 226 | ![[Patents]](../gifs/ps.gif) | . . . . With manipulating means |
| 227 | ![[Patents]](../gifs/ps.gif) | . By separating metal in a molten mass from undesired material, e.g., slag |
| 228 | ![[Patents]](../gifs/ps.gif) | . . By skimming a material |
| 229 | ![[Patents]](../gifs/ps.gif) | . . By baffle means |
| 230 | ![[Patents]](../gifs/ps.gif) | . . . At discharge outlet |
| 231 | ![[Patents]](../gifs/ps.gif) | . . . In discharge trough, e.g., runner |
| 232 | ![[Patents]](../gifs/ps.gif) | . . Settling receptacle, e.g., slag pot |
| 233 | ![[Patents]](../gifs/ps.gif) | . By stirring or mixing molten metal |
| 234 | ![[Patents]](../gifs/ps.gif) | . . Induction stirring |
| 235 | ![[Patents]](../gifs/ps.gif) | . . Having impeller means |
| 236 | ![[Patents]](../gifs/ps.gif) | . With means to discharge molten material |
| 237 | ![[Patents]](../gifs/ps.gif) | . . Including electromagnetic means |
| 238 | ![[Patents]](../gifs/ps.gif) | . . Means for removing residual material |
| 239 | ![[Patents]](../gifs/ps.gif) | . . By changing ambient pressure on material surface, e.g., suction |
| 240 | ![[Patents]](../gifs/ps.gif) | . . With means to tilt heating means |
| 241 | ![[Patents]](../gifs/ps.gif) | . With means to cool treating means |
| 242 | ![[Patents]](../gifs/ps.gif) | . Heated melting pot |
| 243 | ![[Patents]](../gifs/ps.gif) | . Bessemer-type treating vessel |
| 244 | ![[Patents]](../gifs/ps.gif) | . . By mounting vessel to revolve about its longitudinal axis |
| 245 | ![[Patents]](../gifs/ps.gif) | . . With means pivotally mounting vessel |
| 246 | ![[Patents]](../gifs/ps.gif) | . . . Means mounting vessel to trunnion ring |
| 247 | ![[Patents]](../gifs/ps.gif) | . . . Means mounting vessel to U-shaped trunnion support means |
| 248 | ![[Patents]](../gifs/ps.gif) | . Horizontal, rotatable, cylindrical type |
| 249 | ![[Patents]](../gifs/ps.gif) | MEANS TREATING SOLID METAL |
| 250 | ![[Patents]](../gifs/ps.gif) | . Having evacuated chamber |
| 251 | ![[Patents]](../gifs/ps.gif) | . By contact with gas |
| 252 | ![[Patents]](../gifs/ps.gif) | . . With heating means |
| 253 | ![[Patents]](../gifs/ps.gif) | . . . Bottom feeding furnace |
| 254 | ![[Patents]](../gifs/ps.gif) | . . . With indirect heat-exchange means for gas |
| 255 | ![[Patents]](../gifs/ps.gif) | . . . Having work contained in separate, noncommunicating chamber, e.g., muffle |
| 256 | ![[Patents]](../gifs/ps.gif) | . . . . Bell furnace |
| 257 | ![[Patents]](../gifs/ps.gif) | . . . Having atmosphere generating means within treating zone |
| 258 | ![[Patents]](../gifs/ps.gif) | . . By contacting only selected areas of object |
| 259 | ![[Patents]](../gifs/ps.gif) | . By cooling of the solid |
| 260 | ![[Patents]](../gifs/ps.gif) | . . By contact with solid heat sink |
| 261 | ![[Patents]](../gifs/ps.gif) | . By flame contact heating |
| 262 | ![[Patents]](../gifs/ps.gif) | . Fluid tight heat transferring box shield or hood (e.g., annealing box) |
| 263 | ![[Patents]](../gifs/ps.gif) | . . Bell-type hood, or support for such hood |
| 264 | ![[Patents]](../gifs/ps.gif) | . . . Having packing at hood lip |
| 265 | ![[Patents]](../gifs/ps.gif) | MEANS FOR INTRODUCING FLUENT INTO VESSEL, E.G., TUYERE |
| 266 | ![[Patents]](../gifs/ps.gif) | . With flow control means or internal flow guide |
| 267 | ![[Patents]](../gifs/ps.gif) | . Having means for simultaneously feeding diverse materials |
| 268 | ![[Patents]](../gifs/ps.gif) | . . Having plural outlets |
| 269 | ![[Patents]](../gifs/ps.gif) | . Having drain means or cleaner insertion means, e.g., punch hole |
| 270 | ![[Patents]](../gifs/ps.gif) | . Having means preventing damage to introducing means, e.g., wear linings, cooling |
| 271 | ![[Patents]](../gifs/ps.gif) | MEANS SEALING OR OPENING APERTURE IN VESSEL |
| 272 | ![[Patents]](../gifs/ps.gif) | . By means plugging aperture |
| 273 | ![[Patents]](../gifs/ps.gif) | . . By means injecting plugging compound, e.g., mud gun |
| 274 | ![[Patents]](../gifs/ps.gif) | MEANS FOR HOLDING OR SUPPORTING WORK |
| 275 | ![[Patents]](../gifs/ps.gif) | . Receptacle |
| 276 | ![[Patents]](../gifs/ps.gif) | . . With means movably supporting receptacle |
| 277 | ![[Patents]](../gifs/ps.gif) | . . . By bed of rollers |
| 278 | ![[Patents]](../gifs/ps.gif) | . . Having corrugated wall |
| 279 | ![[Patents]](../gifs/ps.gif) | . Grate |
| 280 | ![[Patents]](../gifs/ps.gif) | LININGS |
| 281 | ![[Patents]](../gifs/ps.gif) | . With making or repairing means |
| 282 | ![[Patents]](../gifs/ps.gif) | . With metallic means to prevent lining abrasion |
| 283 | ![[Patents]](../gifs/ps.gif) | . Having particular lining element shape |
| 284 | ![[Patents]](../gifs/ps.gif) | . Having specific grain size |
| 285 | ![[Patents]](../gifs/ps.gif) | . With means allowing for expansion |
| 286 | ![[Patents]](../gifs/ps.gif) | . With specific lining enclosing structure |
| 287 | ![[Patents]](../gifs/ps.gif) | MISCELLANEOUS |
| | | ****************************** |
| | | CROSS-REFERENCE ART COLLECTIONS |
| | | ****************************** |
| 900 | ![[Patents]](../gifs/ps.gif) | METAL MELTING FURNACES, E.G., CUPOLA TYPE |
| 901 | ![[Patents]](../gifs/ps.gif) | SCRAP METAL PREHEATING OR MELTING |
| 902 | ![[Patents]](../gifs/ps.gif) | BLOWPIPES SPECIALIZED TO TRANSVERSELY CUT OR NOTCH BLOOMS, BILLETS OR BARS |
| 903 | ![[Patents]](../gifs/ps.gif) | SAFETY SHIELDS |
| 904 | ![[Patents]](../gifs/ps.gif) | BLOWPIPE CUTTING HEADS |
| 905 | ![[Patents]](../gifs/ps.gif) | REFRACTORY METAL-EXTRACTING MEANS |
| | | ****************************** |
| | | DIGEST |
| | | **************************** |
| DIG 1 | ![[Patents]](../gifs/ps.gif) | REPAIR OR RESTORATION OF APPARATUS |