US PATENT SUBCLASS 104 / 244.1
.~ Furrow feelers
Current as of: June, 1999
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DEFINITION
Classification: 104/244.1
(under subclass 242) Devices comprising a feeler element for a vehicle, said feeler element being adapted to contact a furrow or channel previously made in the ground to guide the vehicle on a path determined by the direction of said furrow or channel.
(1) Note. The feeler element must not be a load supporting member such as a load supporting wheel of the vehicle; it must be an added element for the purpose only of guiding the vehicle. The feeler element may, however, be a part added to a load supporting wheel to function as a furrow follower.
(2) Note. The previously made furrow must not be freshly made by an earth working element ahead of the feeler. It must have been made on a previous pass of the apparatus or made by some other apparatus.
(3) Note. The vehicle may be an earth working implement claimed by name only.
SEE OR SEARCH CLASS
33, Geometrical Instruments,
41.1+, for scriber means for producing a line at an unvarying distance from a guiding edge or the like. 172, Earth Working,
26, for an earth working implement guided by a feeler element running in a furrow, subclasses 278+ for earth working implements with wheel steering means or means for horizontally angling a wheel axis, subclass 126 for earth marker apparatus, earth markers often being mounted on a vehicle in a manner similar to that of furrow followers, subclasses 383+ for earth working implements with an
angularly adjustable wheel or with means for locking it against swinging, subclasses 387+ for an earth working implement with a wheel substitute, subclasses 395+ for an earth working implement with a ground support vertically adjustable relative to the frame, and subclasses 669+ for an earth working implement with a wheel.
180, Motor Vehicles,
401, as explained in the reference thereto appearing in subclass 242 above.
280, Land Vehicles,
87.2, for a land vehicle of the wheeled type provided with means whereby one or more of its wheels may be steered by an occupant and wherein the steering means controls also a wheel offset from the principal supporting wheels of the vehicle, and see the search notes of that subclass (87.2) for the line with this class (104); and subclass 776 for a wheeled vehicle of the occupant steered type wherein bias means is provided for maintaining a steerable wheel in engagement with an elongate, more or less vertical surface (e.g., a curb) for a vehicle-steering purpose.
