| Class Number |
Class Name |
No. of Patents |
| 171/43 |
Combined or convertible |
6 |
| 171/110 |
Digger and moving conveyer unit adjustable relative to chassis |
9 |
| 171/142 |
Drive details (e.g., clutch or gearing) |
3 |
| 171/8 |
Drive triggered by desired object |
1 |
| 171/111 |
Earth removal and separation |
9 |
| 171/122 |
Clod pulverizer outside separating zone |
1 |
| 171/123 |
Conveyer disposed below separator |
3 |
| 171/136 |
Digger and fixedly interconnected contiguous separator |
4 |
| 171/124 |
Moving conveyer, digger or separator |
15 |
| 171/134 |
Moving digger and separate separator |
5 |
| 171/126 |
Moving open separator or separating conveyer |
11 |
| 171/127 |
Compound motion (e.g., with agitator) |
9 |
| 171/132 |
Moving screen or grate (e.g., shaker) |
11 |
| 171/131 |
Plural successive separators, one a belt |
5 |
| 171/130 |
Plural, successive, endless belt type |
13 |
| 171/133 |
Relatively moving separator elements (e.g., rollers) |
9 |
| 171/128 |
Rotary cylinder with radially extending separating elements |
5 |
| 171/129 |
Rotary drum type |
6 |
| 171/125 |
Rolling nonseparating elevator or conveyer |
1 |
| 171/112 |
Rolling screen or sieve (e.g., wheel or belt) |
2 |
| 171/135 |
Separator formed in collector receptacle |
8 |
| 171/113 |
Spiral conveyer for excavator or separator |
2 |
| 171/114 |
With impeller or clod breaker for excavator or separator |
1 |
| 171/117 |
Endless belt type impeller or breaker |
1 |
| 171/120 |
Endless impeller or breaker above excavator or separator |
5 |
| 171/119 |
Excavator or separator within confines of endless impeller or breakers |
1 |
| 171/118 |
Opposed endless members |
1 |
| 171/121 |
Impeller or breaker driven through cyclic path |
0 |
| 171/116 |
Rotary |
5 |
| 171/115 |
Transversely moving rotary member |
2 |
| 171/50 |
Extractor |
6 |
| 171/55 |
Opposed plant engagers |
3 |
| 171/59 |
Claw type |
0 |
| 171/58 |
Disc or roller |
44 |
| 171/56 |
Jaw means relatively movably mounted on carrier means |
4 |
| 171/60 |
One a belt or belt carrier member |
0 |
| 171/61 |
Opposed belts or belt carried members |
27 |
| 171/57 |
Screw |
3 |
| 171/53 |
Plant impaling or snagging (e.g., roots or tops) |
5 |
| 171/54 |
Retractible to strip |
0 |
| 171/51 |
With agitator for extractor or extractor-carried object |
1 |
| 171/62 |
With digger or root cutter |
21 |
| 171/52 |
With movable stripper |
0 |
| 171/143 |
Frames and/or wheeled chassis |
7 |
| 171/66 |
Ground engaging chain separators |
1 |
| 171/21 |
Holding and severing plant portion in situ |
0 |
| 171/22 |
Plural level cutters |
0 |
| 171/83 |
Leading plow or cutter with contiguous, fixed inclined separator |
3 |
| 171/141 |
Lifting or tilting means for unearthing apparatus |
20 |
| 171/1 |
Methods of recovering buried objects |
19 |
| 171/144 |
Miscellaneous (e.g., hopper or collector) |
15 |
| 171/49 |
Moved object void filling or earth hold down |
0 |
| 171/DIG.1 |
Peanut digger |
8 |
| 171/7 |
Periodic dumping in piles |
1 |
| 171/71 |
Plow or blade continguous to vibrating separator |
4 |
| 171/78 |
Ground supported trailing separator |
2 |
| 171/77 |
Non-circular rolling support for a separator |
0 |
| 171/75 |
Plural separator sets of with articulated elements |
1 |
| 171/76 |
Relatively moving interdigitated sets |
0 |
| 171/81 |
Shifting laterally |
0 |
| 171/79 |
Supported on longitudinally spaced links |
0 |
| 171/80 |
Swinging about longitudinal or inclined axis |
1 |
| 171/73 |
Transversely curved or inclined separator |
0 |
| 171/72 |
With resilient support or drive connection |
0 |
| 171/74 |
With side walls or guides |
2 |
| 171/2 |
Plural alternately usable unearthing units |
1 |
| 171/44 |
Power means to shift unearthing unit part |
1 |
| 171/16 |
Railroad ballast removal and assorting or separating |
101 |
| 171/14 |
Recovered object passes through separator interstices |
19 |
| 171/15 |
Assorting by size |
7 |
| 171/11 |
Removable or alternate collection receptacles |
7 |
| 171/48 |
Separate draft connections to unearthing unit and unearthing unit support |
0 |
| 171/84 |
Separating digger (e.g., vertical collecting tines) |
3 |
| 171/104 |
Inclined lifting surfaces |
0 |
| 171/105 |
Tines (e.g., forks) |
13 |
| 171/106 |
Vertically stepped transverse elements |
2 |
| 171/102 |
Laterally deflecting diggers |
5 |
| 171/86 |
Movable on supporting frame (e.g., pivoted) |
2 |
| 171/94 |
Carried by endless flexible member |
0 |
| 171/99 |
Cyclic |
0 |
| 171/91 |
Moving digger carrier with relatively moving digger |
1 |
| 171/90 |
Moving digger with intercepting stripper or chute |
0 |
| 171/89 |
Moving diggers with intercepting moving stripper or conveyer |
4 |
| 171/100 |
Pivoted about ground wheel axle |
0 |
| 171/88 |
Plural cooperating moving diggers |
3 |
| 171/93 |
Rolling or coaxial with traction wheel |
3 |
| 171/95 |
Rotary |
0 |
| 171/96 |
Conical digger portion |
0 |
| 171/97 |
Horizontal axis (e.g., longitudinal axis) |
1 |
| 171/98 |
Transverse axis |
5 |
| 171/92 |
Separator or collector within annular or endless digger |
1 |
| 171/87 |
With ejector on digger or digger carrier |
0 |
| 171/85 |
Moving impeller with cooperating circular arcuate guide |
2 |
| 171/101 |
Separating digger intercepted by moving conveyer or impeller |
15 |
| 171/103 |
Spaced, inclined shares or guides (pairs) |
0 |
| 171/107 |
Tooth or tine arrangements or details |
6 |
| 171/18 |
Separation by physical characteristics |
13 |
| 171/17 |
Separation or orientation by fluid current or suspension |
13 |
| 171/3 |
Stabilizing colter or fin |
0 |
| 171/63 |
Stone gathering and/or unearthing by impelling above-ground plant or object portion |
57 |
| 171/65 |
Impeller inclined to line of draft |
15 |
| 171/64 |
With underground stalk or root severing |
4 |
| 171/9 |
Support overload release and reset; drive overload relief; or automatic control |
5 |
| 171/108 |
Traction wheel drive details for unearthing unit part |
0 |
| 171/45 |
Tractor powered trailing unearthing unit |
12 |
| 171/70 |
Transversely moving single tine row |
0 |
| 171/46 |
Unearthing unit detachable from vehicle chassis |
12 |
| 171/139 |
Unearthing unit fixed on vertically shiftable vehicle frame |
1 |
| 171/47 |
Unearthing unit laterally shiftable on support |
1 |
| 171/109 |
Unearthing unit or vehicular break-frame |
0 |
| 171/82 |
Unearthing unit rocking or fulcrumed on ground |
5 |
| 171/140 |
Unearthing unit with gauge runner or wheel |
2 |
| 171/26 |
With above-ground means for detachment of plant part |
9 |
| 171/30 |
By non-driven rotatable cutter (e.g., rolling) |
1 |
| 171/31 |
Conveyer feed to or from cutter |
5 |
| 171/32 |
Cutter positioned by gauge |
1 |
| 171/36 |
Held by conveyer during cutting |
5 |
| 171/38 |
Opposed belt conveyers |
8 |
| 171/39 |
Wheel-like conveyer |
0 |
| 171/37 |
With lateral disposal of cuttings |
0 |
| 171/33 |
With driven gauge |
1 |
| 171/34 |
With gauge |
0 |
| 171/35 |
Moved into transverse horizontal position for cutting |
0 |
| 171/27 |
Detachment by pulling, beating, shaking or crushing |
21 |
| 171/28 |
By opposed rotary gripping elements |
8 |
| 171/41 |
Moving topping cutter |
6 |
| 171/42 |
Rotary or endless |
2 |
| 171/29 |
Separate successive topping stations |
0 |
| 171/40 |
With deflector or conveyer for detached plant part |
3 |
| 171/4 |
With additional earth or plant rolling implement |
1 |
| 171/12 |
With apparatus cleaner in nonrecovery zone of unearthing unit |
2 |
| 171/25 |
With cleaning of recovered object by brushing or wiping |
9 |
| 171/24 |
With comminuting or multiple cutting of recovered plant part |
1 |
| 171/6 |
With earth marker or trailing earth conditioner |
4 |
| 171/20 |
With manual operation station (e.g., topping, separation inspection) |
6 |
| 171/138 |
With material redirecting conveyer or chute |
7 |
| 171/67 |
With preliminary deflector for surface material |
0 |
| 171/68 |
Driven deflector |
0 |
| 171/69 |
Moving deflector |
0 |
| 171/10 |
With preliminary removal or undesired earth material |
5 |
| 171/137 |
With protective guard or casing |
3 |
| 171/19 |
With rake or lateral deflector for ground contacting recovered objects |
7 |
| 171/23 |
With selective delivery to alternate locations (e.g., by-pass) |
3 |
| 171/13 |
With toothed moving stripper or pick-off for undesired object |
4 |
| 171/5 |
With vertical cutter for vegetation |
2 |
