A
SECTION A — HUMAN NECESSITIES
  
AGRICULTURE
 A01
AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
 A01B
SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL (making or covering furrows or holes for sowing, planting or manuring A01C 5/00; machines for harvesting root crops A01D; mowers convertible to soil working apparatus or capable of soil working A01D 42/00; mowers combined with soil working implements A01D 43/00; soil working for engineering purposes E01, E02, E21)
 A01B
Subclass index
HAND TOOLS 1/00
PLOUGHS
General construction 3/00, 5/00, 9/00, 11/00
Special adaptations 13/00, 17/00
Details 15/00
HARROWS
General construction 19/00, 21/00
Special applications 25/00
Details 23/00
IMPLEMENTS USABLE EITHER AS PLOUGHS OR AS HARROWS OR THE LIKE 7/00
OTHER MACHINES 27/00 - 45/00, 49/00, 77/00
ELEMENTS OR PARTS OF MACHINES OR IMPLEMENTS 59/00 - 71/00
TRANSPORT IN AGRICULTURE 51/00, 73/00, 75/00
OTHER PARTS, DETAILS OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS 76/00
PARTICULAR METHODS FOR WORKING SOIL 47/00, 79/00
P:250 A01B 1/00
Hand tools (edge trimmers for lawns A01G 3/00)
 A01B 3/00 - 
A01B 17/00
Ploughs
P:130 A01B 3/00
Ploughs with fixed plough-shares
P:120 A01B 5/00
Ploughs with rolling non-driven tools, e.g. discs (with rotary driven tools A01B 9/00)
P:70 A01B 7/00
Disc-like soil-working implements usable either as ploughs or as harrows, or the like
P:110 A01B 9/00
Ploughs with rotary driven tools (tilling implements with rotary driven tools A01B 33/00)
P:100 A01B 11/00
Ploughs with oscillating, digging or piercing tools
P:80 A01B 13/00
Ploughs or like machines for special purposes (for drainage E02B 11/00)
P:140 A01B 15/00
Elements, tools, or details of ploughs
P:90 A01B 17/00
Ploughs with special additional arrangements, e.g. means for putting manure under the soil, clod-crushers (A01B 49/00 takes precedence; ploughs for working subsoil A01B 13/00)  [2]
 A01B 19/00 - 
A01B 25/00
Harrows
P:180 A01B 19/00
Harrows with non-rotating tools
P:170 A01B 21/00
Harrows with rotary non-driven tools (tilling implements with rotary driven tools A01B 33/00)
P:190 A01B 23/00
Elements, tools, or details of harrows (discs for both harrows and ploughs A01B 15/00)
P:150 A01B 25/00
Harrows with special additional arrangements, e.g. means for distributing fertilisers; Harrows for special purposes (A01B 39/00 takes precedence)
 A01B 27/00 - 
A01B 49/00
Other machines for working soil
P:220 A01B 27/00
Clod-crushers
P:230 A01B 29/00
Rollers
P:240 A01B 31/00
Drags
P:160 A01B 33/00
Tilling implements with rotary driven tools
P:260 A01B 35/00
Other machines for working soil (A01B 37/00, A01B 39/00, A01B 77/00 take precedence)
P:210 A01B 37/00
Devices for loosening soil compacted by wheels or the like
P:40 A01B 39/00
Other machines specially adapted for working soil on which crops are growing
P:20 A01B 41/00
Thinning machines
P:200 A01B 43/00
Gatherers for removing stones, undesirable roots or the like from the soil, e.g. tractor-drawn rakes  [4]
P:30 A01B 45/00
Machines for treating meadows or lawns
P:10 A01B 47/00
Soil-working with electric potential applied between tools and soil
P:50 A01B 49/00
Combined machines (auxiliary devices attached to machines of a different kind, e.g. harrows attached to ploughs, see the relevant groups for the machines)
 A01B 51/00 - 
A01B 75/00
Parts, details or accessories of agricultural machines or implements, in general (seat constructions A47C; wheels B60B; shelters for drivers B60J; seats specially adapted for vehicles, arrangement or mounting of seats in vehicles B60N 2/00; wheel scrapers B60S 1/00)  [3]
P:340 A01B 51/00
Undercarriages specially adapted for mounting-on various kinds of agricultural tools or apparatus (general vehicle aspects, see the relevant subclass of class B60 or B62)
P:310 A01B 59/00
Devices specially adapted for connection between animals or tractors and agricultural machines or implements (A01B 63/00 takes precedence; vehicle connections in general B60D; draught assemblies for animal drawn vehicles, in general B62C 5/00)  [3]
P:270 A01B 61/00
Devices for, or parts of, agricultural machines or implements for preventing overstrain (preventing overstrain in vehicle connections, in general B60D; preventing overstrain in couplings per se F16D)  [3]
P:300 A01B 63/00
Lifting or adjusting devices or arrangements for agricultural machines or implements (lifting mechanisms for the cutter-bar of a mower A01D 34/02; adjusting devices for the cutter-bar of a mower A01D 34/02; constructional features of lifting devices per se B66F)  [3]
 A01B 63/02
·  for implements mounted on tractors
 A01B 63/10
·  ·  operated by hydraulic or pneumatic means
 A01B 63/102
·  ·  ·  characterised by the location of the mounting on the tractor, e.g. on the rear part
 A01B 63/11
·  ·  ·  for controlling weight transfer between implements and tractor wheels  [2]
 A01B 63/111
·  ·  ·  regulating working depth of implements
 A01B 63/118
·  ·  ·  Mounting implements on power-lift linkages (A01B 59/00 takes precedence; preventing or limiting side-play of implements A01B 59/00; preventing overstrain A01B 61/00)  [2]
P:280 A01B 67/00
Devices for controlling the tractor motor by resistance of tools (preventing overstrain A01B 61/00)
P:330 A01B 69/00
Steering of agricultural machines or implements; Guiding agricultural machines or implements on a desired track  [3]
 A01B 69/02
·  Ridge-marking or like devices; Checkrow wires; Accessories therefor
 A01B 69/04
·  Special adaptations of automatic tractor steering, e.g. electric system for contour ploughing
 A01B 69/06
·  Lateral steering of machines by an additional operator
 A01B 69/08
·  Lateral steering of machines derived from the lateral movement of tractor
P:290 A01B 71/00
Construction or arrangement of setting or adjusting mechanisms, of implement or tool drive or of power take-off; Means for protecting parts against dust, or the like; Adapting machine elements to or for agricultural purposes
P:320 A01B 73/00
Means or arrangements to facilitate transportation of agricultural machines or implements, e.g. folding frames to reduce overall width (arrangements of lifting devices for soil working implements A01B 63/00; vehicles adapted for load transportation or to transport, to carry or to comprise special loads or objects B60P; motor vehicles, trailers B62D)  [4]
P:350 A01B 75/00
Carriers for supporting persons when working in the field, e.g. while thinning beet
   
P:360 A01B 76/00
Parts, details or accessories of agricultural machines or implements, not provided for in groups A01B 51/00-A01B 75/00  [8]
P:60 A01B 77/00
Machines for lifting and treating soil (biocides, pest repellants or attractants, plant growth regulators A01N 25/00-A01N 65/00; fertilisers C05; soil-conditioning or soil-stabilising materials C09K 17/00)
P:0 A01B 79/00
Methods for working soil (essentially requiring the use of particular machines, see the relevant groups for the machines)