| Class 172 | EARTH WORKING |
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![[List of Pre Grant Publications for class 172 subclass 1]](../as.gif) | ![[List of Patents for class 172 subclass 1]](../ps.gif) | 1 | PROCESSES |
| | 2 | AUTOMATIC POWER CONTROL |
| | 3 |  Motive power control |
| | 4 | Constant depth type |
| | 4.5 | Land leveller type |
| | 5 | Obstruction sensing type (includes plant sensing) |
| | 7 | Draft responsive |
| | 13 | LAWN EDGER |
| | 14 | With or convertible to non-earth working implement |
| | 15 | Rolling or driven cutter |
| | 17 | With wheel or roller |
| | 18 | Impact or grapple |
| | 19 | SOD CUTTER |
| | 21 | LAWN AERATOR OR PERFORATOR, OR PLUG REMOVER |
| | 23 | DRIVEN FROM OR GUIDED BY STATIONARY OBJECT, OR ANCHORED |
| | 24 | Around tree or stake |
| | 25 | Rotatable about vertical axis |
| | 26 | Guided by surface track or previously formed shoulder |
| | 26.5 | Dragline scraper |
| | 27 | WITH MEANS FOR CUTTING OR SHREDDING PLANTS WITHOUT SOIL DISTURBANCE |
| | 29 | WITH MEANS FOR SHIFTING SURFACE MATERIAL WITHOUT SOIL DISTURBANCE |
| | 32 | WITH SEPARATING AFTER EARTH WORKING |
| | 33 | WITH POWER DRIVEN MOLDBOARD, CONVEYER OR HANDLER |
| | 34 | COMPLETE APPARATUS ADAPTED FOR USE UPSIDE DOWN |
| | 35 | WITH DRIVE MEANS FOR TOOL OR CLEANER |
| | 36 | Subsurface shears or nippers |
| | 37 | Tool rotated by attendant |
| | 38 | With obstruction feeling device for moving or releasing implement |
| | 39 | With cleaner or comminutor spaced from ground surface |
| | 40 | Vibrating tool |
| | 41 | Attendant supported tool |
| | 42 | Guided by walking attendant |
| | 44 | Subsurface shaft or bar (e.g., rod weeder) |
| | 45 | Flails |
| | 46 | Coaxial tools oppositely rotated |
| | 47 | With specific relationship of mast-type hitch (i.e., three-point hitch) to implement |
| | 48 | Plural driven tools |
| | 49 |  Contiguous cooperating or intermeshing rotary ground engaging tools |
| | 50 | Diverse tools |
| | 54.5 | Tool reciprocates or oscillates within a generally horizontal plane |
| | 55 | Plural groups of disks |
| | 56 | Staggered tools |
| | 57 | Laterally spaced tools |
| | 61 | Intermittent drive for tool |
| | 63 | With non-driven tool (e.g., plow, harrow, drag, scraper, knife or roll, etc.) |
| | 64 | Non-driven furrow opener and driven dam former |
| | 65 | Interdigitating non-driven and driven tools |
| | 66 | Cooperating driven cleaner or comminutor and contiguous tool |
| | 67 | Driven comminutor at outlet of earth guide |
| | 68 | Rolling tool |
| | 70 | Fore-and-aft non-driven tool |
| | 71 | Non-driven tool follows path of driven tool |
| | 73 | Staggered driven and non-driven tool (e.g., cotton chopper, etc.) |
| | 74 | With power take-off from tool drive to adjust tool |
| | 75 | Interconnected tool lift and drive control |
| | 76 | Implement with ground support for depth control |
| | 77 | Vertically biased implement |
| | 78 | Vertically adjustable ground support |
| | 79 | Tool driven from prime mover on vehicle |
| | 80 | With wheel substitute (e.g., runner, etc.) |
| | 81 | With plant deflector or protector |
| | 82 | Driven tool selectively shiftable along line of travel |
| | 84 | Simultaneously reciprocating and oscillating blade having elongated shank |
| | 85 | Transverse chopping type |
| | 88 | With plural cranks or cams driving each blade |
| | 89 | Means for varying contour of path of blade |
| | 90 | Irregular or off-center ground-engaging wheel or support |
| | 91 | Blade movable with respect to cyclically driven carrier |
| | 92 | With means for moving blade |
| | 93 |  Rectilinearly reciprocating blade |
| | 94 | Blade oscillating arcuately or swivelly with respect to rotary carrier |
| | 95 | By cam or crank |
| | 96 | Blade flexible or with yieldable mount on carrier |
| | 97 | Compound motion for tool (e.g., reciprocating and oscillating, reciprocating and rotating) |
| | 98 | Tool mounted for lateral shifting |
| | 100 | Blade on endless driven belt or chain |
| | 101 | Tool guided for rectilinear reciprocation |
| | 103 | With overload relief or clutch in drive train (e.g., overload release, etc.) |
| | 105 | Driven from rolling or driven ground wheel |
| | 107 | Tool driven about horizontal, longitudinal axis |
| | 110 | Tool driven about generally vertical axis (e.g., oscillating choppers, etc.) |
| | 112 | With deflector or shield for thrown material |
| | 114 | Specific propelling means |
| | 117 | Tool freely or yieldably mounted on chassis |
| | 118 | Tool driven about axis transverse to draft line |
| | 119 | Screw or spiral rib, blade or tooth row |
| | 120 | Disk or planar cutter (e.g., saw, etc.) |
| | 121 | Laterally extending bar or blade with skeleton support (e.g., lawn mower type, etc.) |
| | 122 | Drum with teeth or blades |
| | 123 | Rotary driven tool |
| | 124 | Tool driven about diagonal axis |
| | 125 | Tool drive details |
| | 126 | WITH EARTH MARKER |
| | 127 | Marker shiftable on turning |
| | 128 | Marker adjusted upon raising implement |
| | 129 | Ground wheel operated marker control |
| | 130 | Multiple interconnected markers |
| | 132 | Marker swingable about longitudinal axis to both sides |
| | 777 | SCRAPER SUPPORTS NARROW DEPENDING TOOL |
| | 779 | SCRAPER POSITION AUTOMATICALLY CONTROLLED BY LINKAGE FOR LEVELLING |
| | 780 | SCRAPER BETWEEN WIDELY SPACED FRONT AND REAR GROUND SUPPORTS |
| | 781 | SCRAPER BETWEEN FRONT AND REAR GROUND SUPPORTS OF VEHICLE |
| | 782 | With laterally offset inclined shoulder forming tool |
| | 783 | With scraper attached ground support |
| | 784 | With diverse tool or portion |
| | 786 | Plural scrapers |
| | 788 | Push frame for scrapers |
| | 789 | Actuator for bodily shifting scraper subframe draft connection |
| | 790 | Counterbalance means for scraper adjustment |
| | 791 | Three or more independently operable scraper actuators |
| | 794 | Spring biased into ground contact |
| | 795 | Specific actuator between frame and scraper |
| | 798 | Actuator for tilting wheel relative to vehicle frame |
| | 799 | Specific means for horizontally angling wheel relative to vehicle frame |
| | 799.5 | TOWED SCRAPER WITH GROUND SUPPORT WHEELS |
| | 133 | DIVERSE TOOLS |
| | 134 | One located in path of implement wheel |
| | 135 | One implement surrounds another |
| | 136 | Tools usable alternately only |
| | 137 | With means to vary spacing of tools upon turning |
| | 138 | With interconnected vertical adjustment |
| | 140 | With independent means for vertical movement |
| | 141 | Interconnected adjustment of horizontal angle of rolling and position of diverse tool |
| | 142 | Including spring formed tool or standard |
| | 143 | Including intermittently rolling tool |
| | 144 | Colter, jointer and plow |
| | 145 | Three or more diverse implements following same path (A, B, C, or A, B, A,) |
| | 146 | Four or more |
| | 148 | Longitudinally spaced like implements with intermediate diverse implement (A, B, A) |
| | 149 | Including rolling tool |
| | 152 | At least four alternately diverse laterally spaced tools (A, B, A, B) |
| | 155 | Laterally spaced like tools with intermediate diverse tool (A, B, A) |
| | 156 | Spaced rolling with intermediate nonrolling |
| | 157 | Spaced non-rolling with intermediate rolling |
| | 158 | All rolling |
| | 159 | Spaced right and left hand tools with intermediate symmetrical tool |
| | 160 | Including spike tooth |
| | 161 | Including implement alternating for right or left hand operation |
| | 163 | Jointer and plow |
| | 165 | Including colter |
| | 167 | Fixed point or share with rotary moldboard |
| | 168 | Rotating tool with fixed moldboard |
| | 169 | Including tool rotatable about vertical axis |
| | 170 | Including smooth levelling roller |
| | 174 | Rolling and non-rolling |
| | 175 | Following same path |
| | 176 | Furrowing or ridging implement followed by furrow or ridge roller |
| | 177 | Rolling tool has circumferentially spaced blades, tines or the like |
| | 178 | Including disk gang |
| | 179 | Non-rolling tool group with laterally co-extensive rolling tool |
| | 180 | Rolling precedes non-rolling (same path) |
| | 182 | Laterally spaced |
| | 184 | Diverse rolling |
| | 188 | Runner attached |
| | 189 | Including fabric or flexible tool |
| | 190 | Including vertical, longitudinally oriented disc or blade (e.g., as stabilizer) |
| | 192 | Including horizontal knife or cutter |
| | 193 | First tool with spaced trailing sweep |
| | 195 | Second implement follows path of first |
| | 196 | Including subsoiler |
| | 197 | Teeth and scraper, leveller or drag |
| | 198 | Including teeth |
| | 199 | Including drag, scraper or levelling blade |
| | 201 | Laterally spaced |
| | 204 | ALTERNATING FOR RIGHT OR LEFT HAND OPERATION (OTHER THAN SCRAPER) |
| | 205 | Draft revoluble on transverse axis |
| | 206 | Interrelated tool shift and lateral movement of draft member |
| | 209 | Interrelated tool lift and shift |
| | 212 | Interrelated tool shift and ground support manipulation |
| | 213 | Tools oriented for movement in opposite directions |
| | 214 | Wheeled frame with reversible draft member |
| | 215 | Tilting beam |
| | 216 | Pivoted about spaced transverse axes, or translated |
| | 217 | With movable deflector |
| | 218 | Shiftable moldboard |
| | 219 | Tool shifted for opposite throw |
| | 220 | Reversible disk with reversible cleaner |
| | 221 | Plural tools shifted about individual vertical axes |
| | 223 | Moldboard type shiftable about longitudinal axis |
| | 224 | Axially rotatable implement |
| | 228 | Parallel separate tools |
| | 232 | Oblique axis in longitudinal vertical plane |
| | 233 | WITH OBSTRUCTION FEELER FOR MOVING OR RELEASING IMPLEMENT TO AVOID OBSTRUCTION (INCLUDES DAM FORMER) |
| | 236 | GROUND ENGAGEABLE DRAFT RESPONSIVE LEVER |
| | 238 | GROUND SUPPORT MOVED VERTICALLY RELATIVE TO FRAME BY DRAFT MEANS |
| | 239 | DRAFT, PITCH OR GROUND LEVEL RESPONSIVE DEPTH CONTROL |
| | 240 | WITH GROUND SUPPORT ENGAGEABLE WITH GROUND FOR TRANSPORT ONLY |
| | 241 | Apparatus inverted to engage ground support with ground |
| | 242 | Implement tiltable on longitudinal axis |
| | 243 | Tool changeable to or replaced by ground support |
| | 244 | Tool and ground support moved together relative to frame |
| | 245 | CONVERTIBLE; OR CHANGEABLE BY DISASSEMBLY OR ASSEMBLY |
| | 246 | To land vehicle with body |
| | 247 | To device classifiable in another class |
| | 248 | To different type of hitch |
| | 249 | Plural simultaneously usable tools to single tool |
| | 250 | Changeable by disassembly or assembly |
| | 255 | TURN LIFTS TOOL OFF OR LOWERS TOOL INTO GROUND |
| | 256 | PROPULSION UNIT GUIDED BY WALKING ATTENDANT OR PART OF ARTICULATED VEHICLE |
| | 257 | Riding attendant |
| | 258 | Endless track or single driven wheel |
| | 259 | With vertically adjustable wheel |
| | 260 | With actuator for moving earth working element vertically |
| | 260.5 | HAVING TOOL OVERLOAD SHIFT CONTROLLED BY A FLUID PRESSURE DEVICE |
| | 261 | OVERLOAD SHIFTING |
| | 262 | Alternate tool brought into operation upon shift |
| | 263 | Actuator released |
| | 264 | Against spring return device |
| | 269 | Resilient latch |
| | 270 | Friction lock |
| | 271 | Frangible lock (e.g., shear pin, etc.) |
| | 272 | WITH MEANS TO FACILITATE MOUNTING OF IMPLEMENT ON MOTOR VEHICLE |
| | 273 | Tool forward of rear of motor vehicle |
| | 274 | Implement has ground support |
| | 275 | Self-coupling by horizontal movement |
| | 810 | MOUNTING FOR PUSHED TOOL AT END OF MOTOR VEHICLE |
| | 811 | Transversely mounted blade (e.g., bulldozer, etc.) |
| | 812 | With valve or pump for hydraulic control system |
| | 813 | Fluid line specifically arranged, or shield for system component |
| | 814 | Having means controlling drive for interconnected vehicles |
| | 815 | Contiguous, relatively adjustable blades; or blade having relatively adjustable earth-engaging parts |
| | 816 | Blade mounting includes resilient connection |
| | 817 | Removable attachment for general purpose vehicle |
| | 818 | Blade angle adjustable in a horizontal plane |
| | 819 | Power-operated adjusting means |
| | 823 | And tilt of blade adjustable |
| | 824 | Having adjustable tilt of angularly fixed blade |
| | 825 | About a pivot axis fixed to mounting |
| | 826 | Including adjustable length device between mounting means and upper corner portion of blade |
| | 827 | Having means to prevent lateral movement of mounting or blade |
| | 828 | With power means for raising and lowering blade |
| | 829 | Including elongated flexible element (e.g., cable) connecting power means to tool or mounting means |
| | 830 | Power means is fluid servomotor |
| | 832 | With blade-carried ground support |
| | 833 | Tool prepares wheel path for passage of wheel |
| | 834 | With tool-carried ground support |
| | 278 | WITH WHEEL STEERING OR ACTUATOR FOR HORIZONTALLY ANGLING WHEEL AXIS |
| | 279 | Implement part interconnected with motor vehicle steering means |
| | 282 | Wheel on trailing implement responds to turning movement |
| | 283 | Interconnected with adjustable tool |
| | 284 | With additional angular adjustment of wheel |
| | 285 | Rear wheel turned or controlled |
| | 286 | Wheel on non-propelled device |
| | 292 | SPECIFIC PROPELLING MEANS |
| | 293 | SERIES OF LIKE ELEMENTS SEQUENTIALLY OPERATED BY POWER CYCLE |
| | 294 | Sequentially operated servo-motors |
| | 295 | Tool forward of rear of motor vehicle |
| | 296 | Shaft with spirally arranged projections |
| | 297 | TOOL FORWARD OF REAR OF MOTOR VEHICLE |
| | 298 | With ground support |
| | 299 | Power actuator with cut-out or lock-out means |
| | 300 | With rearwardly mounted tool |
| | 303 | Power actuator with manual adjusting or supplemental manual actuating means |
| | 304 | Tools independently actuatable |
| | 305 | With means for moving tool laterally |
| | 306 | Connected to front axle |
| | 307 | Parallelogram type lift |
| | 308 | With push bar |
| | 309 | Pivoted on horizontal diagonal axis |
| | 310 | PLURAL WHEELED IMPLEMENTS |
| | 311 | Outrigged implement adjustable inwardly |
| | 312 | Implement draft connection forwardly of rear of self-propelled vehicle |
| | 313 | Laterally spaced with separate draft tongues |
| | 314 | Implements in echelon (e.g., gang plows, etc.) |
| | 315 | ACTUATOR ON TRAILING IMPLEMENT, CONTROLLED FROM PROPELLING VEHICLE |
| | 317 | ACTUATOR ON VEHICLE FOR RELATIVELY MOVING PARTS OF TRAILING IMPLEMENT |
| | 318 | Actuator on vehicle moves implement ground support vertically relative to implement frame |
| | 320 | Disk gang angling |
| | 321 | ACTUATOR ON VEHICLE FOR MOVING WHEELED IMPLEMENT |
| | 322 | WITH ACTUATOR FOR ROCKING TOOL ABOUT WHEEL AXIS |
| | 324 | WITH ACTUATOR ON TRAILING GROUND SUPPORTED FRAME FOR MOVING DRAFT MEANS LATERALLY OR VERTICALLY |
| | 329 | GUIDED BY WALKING ATTENDANT; SUPPORTED, PROPELLED, OR HELD IN POSITION BY ATTENDANT |
| | 330 | With seat for moving hitch |
| | 331 | Hitch guided relative to supporting frame |
| | 332 | Tool manipulated with respect to mounting frame |
| | 333 | Arched wheel frame (i.e., straddle row, etc.) |
| | 334 | Seat counterbalanced beam |
| | 335 | With spring biasing means |
| | 337 | Combined implement lift and wheel adjustment |
| | 338 | Tongueless, animal draft |
| | 340 | Multiple plant row type |
| | 341 | With added intermediate tool |
| | 342 | Cross connected drag bars |
| | 343 | Foot operated |
| | 344 | With support bracket for transport |
| | 345 | Manipulated about longitudinal axis |
| | 346 | Plural tools independently or oppositely manipulable |
| | 347 | Spring biased |
| | 348 | Vertically manipulated |
| | 349 | Rolling tool |
| | 351 | Guided or propelled by walking attendant and with ground support or draft means |
| | 352 | With stepper propulsion means |
| | 353 | With body harness or engaging means |
| | 354 | With wheel |
| | 355 | Alternately usable tools rocked about wheel axis |
| | 356 | Plural longitudinally spaced wheels |
| | 357 | Handle forward of tool |
| | 358 | Tool forward of wheel |
| | 359 | Tool and handle relatively vertically adjustable |
| | 360 | With wheel substitute (e.g., runner, etc.) |
| | 361 | Handle connected to tool or runner |
| | 362 | Tool standard connected to handle |
| | 363 | Plural handles associated with relatively adjustable tools |
| | 364 | Handle mounted tool adjusting, latching or locking mechanism |
| | 365 | Tool and handle relatively adjustable |
| | 367 | Multiple handles connected to multiple longitudinal tool carrying beams |
| | 368 | Plural handles connected to opposite sides of longitudinal beam |
| | 370 | With attendant attaching means |
| | 371 | Hand tool |
| | 382 | MULTIPLE LEVEL TOOLS |
| | 383 | AXIS OF ROTATION OF WHEEL LOCKABLE OR ANGULARLY ADJUSTABLE |
| | 384 | With actuator for tilting in a vertical plane |
| | 385 | Adjustable stop |
| | 386 | Lockable against free swinging |
| | 387 | WITH WHEEL SUBSTITUTE (E.G., RUNNER, ETC.) |
| | 388 | With wheel |
| | 389 | Spring tooth implement |
| | 391 | Spike tooth implement |
| | 392 | Plural runner supported implements relatively movable during operation |
| | 393 | Spaced parallel runners with tool mounted therebetween |
| | 394 | Disk type tool |
| | 395 | WITH GROUND SUPPORT VERTICALLY ADJUSTABLE RELATIVE TO FRAME |
| | 396 | Vertically adjustable or selectively lockable hitch |
| | 397 | Tool land ground support moved together relative to frame |
| | 399 | With power take-off from plural wheels |
| | 400 | Actuator and interconnected means for adjusting wheels on different axles |
| | 401 | Three or more adjustable wheels on different axles interconnected |
| | 403 | With power take-off from wheel |
| | 405 | One wheel translates another swings |
| | 406 | With additional actuator changing relative position of wheels |
| | 407 | Power operated adjustment |
| | 408 | Wheel actuates its crank axle mount |
| | 409 | Wheel lockable to crank axle arm |
| | 410 | Intermittently rotatable member swingable with crank |
| | 412 | Swingable arm engageable with wheel |
| | 413 | Servo-motor adjusting means |
| | 414 | Flexible or lost motion connection to actuator |
| | 415 | Translating motion |
| | 421 | Plural ground supports vertically adjustable relative to each other and the frame |
| | 422 | Crank axle with angularly spaced wheel carrying arms |
| | 423 | With actuator |
| | 430 | WITH INDICATING OR SIGHTING MEANS |
| | 431 | WITH SEAT OR ATTENDANT'S STATION |
| | 432 | Plural |
| | 433 | Riding attachment |
| | 434 | Movable to non-use position |
| | 435 | Operator changes position or seat adjustable |
| | 436 | Mounted on transverse member connecting plural implements |
| | 437 | WITH TOOL SHARPENER |
| | 438 | COMBINED |
| | 439 | MAST TYPE HITCH (E.G., THREE POINT HITCH, ETC.) |
| | 440 | Angled gangs liftable as a unit |
| | 443 | Struts on trailer or between implement parts |
| | 444 | Hitch quadrilateral modified during lift |
| | 445 | With means operated by vertical hitch movement |
| | 445.1 | Including blade, scraper, or smoother |
| | 446 | Laterally adjustable tool |
| | 448 | With auxiliary vertical adjustment |
| | 449 | Tool movable relative to mast while earth working |
| | 450 | Sway limiting means or swayable tool |
| | 451 | With tool frame or bar extending beyond sides of vehicle |
| | 452 | WITH ACTUATOR ADAPTED TO LIFT TOOL FOR TRANSPORT ON WHEELED FRAME OR BROADLY CLAIMED IMPLEMENT |
| | 453 | Actuator electrically powered |
| | 454 | Angled gangs lifted as a unit |
| | 456 | Central group liftable vertically, side groups movable inwardly |
| | 457 | With means to restrain lateral sway when raised |
| | 458 | Vertical movement interrelated with another |
| | 459 | Pivotable about longitudinal axis (e.g., lateral levelling, etc.) |
| | 461 | Tool lifted with respect to stationary or relatively movable cleaner |
| | 462 | Plural tools, individually spring biased down, lifted as unit |
| | 463 | Lift actuator moves with tool or forms removable unit therewith |
| | 464 | Servo-motor forces tool down |
| | 465 | Servo-motor with follow-up control (e.g., motion responsive position control, etc.) |
| | 466 | Tool held raised for relieving load on servo-motor |
| | 467 | With shiftable hitch causing vertical movement |
| | 468 | Plural tools, independently actuatable |
| | 469 | By single selectively connectable actuator |
| | 470 | With separate actuator for concurrent lift or with interlock |
| | 471 | Three or more independent actuators |
| | 472 | Plural tools simultaneously raised, individually lowered |
| | 473 | Tool differentially or sequentially lifted at longitudinally spaced points |
| | 474 | Tool rocked about independently vertically adjustable transverse axis |
| | 476 | With lateral adjustment |
| | 478 | Tool and lift actuator on opposite sides of transverse pivot axis |
| | 479 | Tool lifted forward of transverse pivot axis |
| | 480 | Tool swung about freely shiftable or delayed pivot |
| | 481 | With separate latch |
| | 482 | Tool swings about rock shaft axis |
| | 483 | Translatable tool |
| | 485 | Power actuator with manual adjusting or supplemental manual actuating means |
| | 488 | Single lift actuator for plural relatively movable tools |
| | 490 | Rotary drum actuator |
| | 491 | Servo-motor actuator |
| | 492 | With power take-off for actuator |
| | 494 | Overcenter or toggle holding means |
| | 495 | Foot operated actuator |
| | 497 | Tool spring biased during operation |
| | 498 | Biased to neutral position |
| | 499 | Spring means alternately biases tool in opposite directions |
| | 500 | Tool spring pressed downwardly |
| | 501 | Lost motion connection between actuator and tool |
| | 503 | Actuator slidably connected to tool |
| | 504 | Screw actuator |
| | 505 | Tool connected to frame by bail |
| | 506 | Spring assisted or spring actuator |
| | 507 | GROUND SUPPORT MOVABLE HORIZONTALLY |
| | 508 | WITH GUARD, SHIELD OR PLANT DIVERTER |
| | 509 | Fender for deflected earth |
| | 510 | Rotary |
| | 511 | Perforated or screening type |
| | 512 | Inverted U-shape |
| | 513 | Laterally spaced fenders for inwardly thrown earth |
| | 514 | Weed turner or trash holddown |
| | 517 | Plant deflector |
| | 518 | ROLLING, ROTATING OR ORBITALLY MOVING TOOL |
| | 519 | Yieldable material rim (e.g., rubber, etc.) |
| | 520 | Tools on different axes in mutual driving relationship |
| | 521 | With power take-off from tool or wheel |
| | 522 | Axis substantially vertical |
| | 527 | Axis substantially longitudinal |
| | 528 | With means for stopping or retarding rotation |
| | 531 | Wobble discs |
| | 532 | Screw or spiral |
| | 533 | Clutch between shaft and rotating element |
| | 534 | Wheel or roller with peripherally spaced plant saving means |
| | 535 | Detachable rim for disk |
| | 536 | Wheel, roller or gauge and axially adjacent tool on same axis |
| | 537 | Corrugated surface rollers |
| | 538 | Paired press rims (e.g., planter press wheels, etc.) |
| | 539 | Smooth roller with groove, rim or disk |
| | 540 | Tool has circumferentially spaced teeth, tines, blades or the like |
| | 541 | With means for preventing ground engagement of teeth or blades |
| | 542 | Tooth or blade on endless carrier |
| | 543 | Spring tooth or blade |
| | 544 | Spring moving or mounting means for tooth or blade |
| | 545 | Blades or teeth change position relative to each other or rotating support during rotation |
| | 547 | With cleaning means |
| | 548 | Tooth or blade units on single axle |
| | 550 | Tooth or blade adjustable on carrier |
| | 551 | Rolling tool spring biased into ground contact |
| | 552 | Laterally extending bar or blade with skeleton support (e.g., lawn mower type, etc.) |
| | 554 | Drum with axially spaced teeth or blades |
| | 555 | Integral disk |
| | 556 | Tooth or blade axially clamped to hub face (e.g., hoe wheel type, etc.) |
| | 557 | Rim with spokes |
| | 558 | With disk cleaning means |
| | 559 | Rotatably mounted cleaning means |
| | 560 | Cleaner for pair of converging disks |
| | 561 | Cleaners for opposite sides of disk |
| | 562 | Plural cleaners for single disk |
| | 563 | Cleaners with common operator |
| | 566 | Spring biased toward disk |
| | 567 | Disk gang and single disk on diverse axes |
| | 568 | Disk gang with movable or removable section |
| | 569 | Disks pivoted on vertical axes with interconnected means for moving them indentically |
| | 570 | With spring means other than for detent |
| | 574 | Plural disks with individual mount or axis |
| | 577 | Reversible group |
| | 578 | With wheel (not on motor vehicle) |
| | 579 | Plural groups of disks |
| | 580 | Power operated actuator |
| | 581 | Groups changeable to different types of arrangements |
| | 582 | With independent lateral adjustment |
| | 583 | Vertically adjustable group |
| | 584 | Horizontally angularly adjustable group |
| | 585 | Groups of unequal length |
| | 586 | More than two laterally positioned groups |
| | 587 | Groups laterally spaced and unaligned |
| | 588 | Hitch longitudinally movable on tongue and groups abreast |
| | 589 | Turning connection offset from draft connection |
| | 591 | With manual actuator |
| | 592 |  Concentric controls |
| | 593 | Separate handles for independent gang adjustment |
| | 594 | Double tandem groups |
| | 595 | Double tandem groups |
| | 596 | Tandem groups |
| | 598 | Thrust means directly between group axles |
| | 599 | Disk gang |
| | 602 | Single disk freely swayable |
| | 603 | Disk horizontally angularly changeable |
| | 604 | Detailed disk structure per se |
| | 605 | SHIFTABLE HITCH MOVES TOOL RELATIVE TO FRAME |
| | 606 | WITH CLEANER |
| | 611 | WITH WEIGHT |
| | 612 | FABRIC OR FLEXIBLE TOOL |
| | 613 | PLURAL RELATIVELY MOVABLE TOOLS |
| | 614 | Tool pivots on pivoted member when member moves |
| | 618 | Tools assume different angularity for opposite draft |
| | 619 | Plural tool groups relatively vertically movable because of operation |
| | 620 | Parallel transverse tooth bars |
| | 623 | Groups abreast and in tandem |
| | 624 | Plural groups movably connected to forward transverse draft bar |
| | 624.5 | With parallelogram-type linkage |
| | 625 | With alternate draft means (spaced 90 degrees) |
| | 626 | Sectional draft bar |
| | 627 | Groups also connected to one another |
| | 628 | Similar groups arranged to form a triangular shape |
| | 629 | Three or more laterally spaced groups |
| | 630 | Groups pivoted to opposite sides of longitudinal draft member |
| | 631 | Groups movable about common longitudinal axis |
| | 632 | Group movable about oblique horizontal axis |
| | 633 | Group pivotal about intermediate transverse axis |
| | 634 | Parallel, pivotally adjusted tool bars |
| | 635 | With actuator |
| | 636 | Tools also adjustable about vertical or longitudinal axes |
| | 637 | Plural actuators, independently pivoted tool bars |
| | 638 | Gear |
| | 639 | Specific mounting for pivoted tool bar |
| | 640 | Tool group pivotally adjustable about horizontal axis |
| | 641 | Beam spreader of the pivoted yoke type |
| | 642 | Pair of tools cooperate to move earth to or from plant row |
| | 643 | Spring formed tool or standard |
| | 644 | Tools longitudinally adjustable to and from transverse alignment |
| | 645 | Tools relatively adjustable horizontally without causing vertical displacement |
| | 646 | Laterally adjustable tools, independently free to move vertically |
| | 647 | Tools simultaneously adjustable about their individual, spaced vertical axes |
| | 648 | Collapsible lazy tong group |
| | 649 | Tool groups relatively horizontally adjustable |
| | 654 | Main central beam, tools laterally adjustable relative thereto |
| | 655 | Tool adjustable vertically and laterally |
| | 656 | Tool laterally adjustable |
| | 657 | Relatively movable because of operation |
| | 659 | Adjustable about spaced horizontal axes |
| | 661 | Vertically translatable tool |
| | 662 | Tool movable to non-use position |
| | 663 | WITH ACTUATOR |
| | 664 | For relatively movable earth engaging parts |
| | 666 | For adjustment about longitudinal axis |
| | 667 | For lateral adjustment |
| | 668 | For vertical adjustment with respect to wheeled frame |
| | 669 | WITH WHEEL; OR SUPPORTED ON WHEEL FRAME OR BROADLY CLAIMED IMPLEMENT |
| | 670 | All wheels on one side of tool |
| | 671 | Mounted on single longitudinal beam in tool path |
| | 673 | Laterally adjustable tool |
| | 674 | With bracket to hold tool off ground |
| | 675 | Vertically adjustable tool |
| | 676 | Tool follows wheel path |
| | 677 | WITH DRAFT DETAIL |
| | 681 | TOOL, STANDARD OR CONNECTION |
| | 682 | Tool flexed to change contour |
| | 683 | Latched in earth working position |
| | 684 | Tool pivots on member when member moves |
| | 684.5 | Frame-supported blade, scraper, or smoother drawn by vehicle |
| | 685 | Plural tools |
| | 686 | Right and left hand type |
| | 687 | Longitudinally spaced rows |
| | 689 | Closed geometrically shaped frame |
| | 690 | V-shaped frame |
| | 691 | Mounted on transverse or oblique tool bar |
| | 694 | Laterally spaced tools |
| | 698 | Tool with laterally spaced standards |
| | 699 | Subsoilers |
| | 701 | Ridgers |
| | 701.1 | Tool is transversely elongated blade (e.g., bulldozer) |
| | 702 | Reversible part |
| | 705 | Spring biased or formed tool or tool part |
| | 706 | Plural earth engaging parts relatively movable during operation |
| | 707 | Spring formed tool or standard |
| | 709 | Laterally biased |
| | 710 | Pivoted tool biased beyond pivot |
| | 711 | Leaf or torsion spring |
| | 712 | Tool assumes different position for opposite draft |
| | 713 | Tooth |
| | 714 | Plural earth engaging parts relatively movable because of operation |
| | 719 | With add-on cutting or wearing element applied directly over, or onto, the original cutting element |
| | 720 | Subsurface blade (e.g., weeder, etc.) |
| | 721 | Non-rectangular, symmetrical type |
| | 722 | Earth breaking part and separately attached wings |
| | 725 | With separable vertical cutter on centerline |
| | 726 | Having separable parts jointed at centerline |
| | 727 | With attached runner or depth gauge |
| | 730 | Winged |
| | 731 | Lateral extent decreases upwardly |
| | 732 | Triangular blade |
| | 733 | Constant height and V-shape |
| | 734 | Adjustable |
| | 735 | To present different working portion |
| | 736 | Relatively adjustable earth engaging parts |
| | 739 | Adjustable about horizontal transverse axis |
| | 741 | Laterally adjustable |
| | 744 | Vertically adjustable |
| | 745 | Welded |
| | 746 | With portion extended beyond landslide |
| | 747 | Specific material |
| | 748 | Pivoted tool |
| | 749 | Having separable parts interconnected without detachable fastening means |
| | 752 | With separable vertical planar longitudinal cutter (e.g., colter, etc.) |
| | 753 | Interlocked or interfitted parts |
| | 754 | Share and furrow slice inverting moldboard |
| | 755 | Heating or lubricating |
| | 756 | Skeleton |
| | 757 | Furrow slice retainer |
| | 758 | Furrow slice cutter or breaker |
| | 759 | With additional element juxtaposed to moldboard |
| | 760 | Specific moldboard shape |
| | 761 | Serrated, toothed or notched point or share |
| | 762 | Specific tool and standard connection |
| | 763 | Specific standard and beam connection |
| | 764 | With separate runner, gauge, shoe or landslide |
| | 765 | Specific tool shape |
| | 766 | Tool with parallel fingers or blades |
| | 768 | Draw cut type |
| | 769 | Separable parts |
| | 770 | Angularly related tool surfaces |
| | 771 | With curved surface |
| | 772 | Removable tool portion (e.g., replaceable cutting or wearing element for tool) |
| | 773 | Specific standard |
| | 776 | MISCELLANEOUS (E.G., FRAMES, ETC.) |
| CROSS-REFERENCE ART COLLECTIONS | ||
| | 900 | PLANT THINNERS |
| FOREIGN ART COLLECTIONS | ||
| FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |