(under the class definition) Apparatus in which means is provided (1) which includes a frangible, frictional or resilient member or connection in the mounting of the recovery device, or a portion thereof, said member normally holding the recovery device, or a portion thereof in its normal working position until an abnormal condition arises, which overloads the device or said portion thereof and breaks the frangible element or overcomes the frictional or resilient force, thereby permitting the device or said portion thereof to move to a nonoverloaded position and there remain until manually reset, (2) in the power transmission for the device, or portions thereof, including a resilient, frictional or frangible member or connection adapted to yield or break when the device, or a portion thereof, is subjected to an abnormal operating condition whereby the drive to the recovering device is momentarily interrupted or positively disengaged; or (3) to sense a condition which may or not may occur and respond to such condition by causing an operation of the recovery device to occur only when said condition exists.
(1) Note. Automatic devices are those which will, for example, set the recovery device, or a portion thereof, in operation when a desired plant or object is encountered, and cause such operation to cease when the plant or object has been worked upon.
(2) Note. Overload-relief means are those means interposed in the drive or support for the unit, or a part thereof, which will, for example, permit the drive of the recovery device, or a portion thereof, to cease upon encountering an obstruction; or to move to a position where it will pass an obstruction or an unyielding object.
SEE OR SEARCH THIS CLASS, SUBCLASS:
7, for collection receptacles which are dumped in response to a predetermined weight of recovered articles or to a predetermined travel of the apparatus.
8, for drive means which are operated or controlled by sensing the presence of a plant or buried object either before or after it is unearthed. 143+, for recovery devices or parts thereof which are resiliently mounted on a supporting frame to move from a normal position to an abnormal position and to be returned to said normal position by a resilient means.
SEE OR SEARCH CLASS
56, Harvesters,
10.2+, for a harvester having condition-responsive operation, and particularly 10.3, for relief of drive overload.
172, Earth Working,
2+, for earth-working apparatus with automatic power controlled means, subclasses 103+ for a driven earth-working tool or cleaner with an overload-relief means or clutch in the drive train, and subclasses 261+ for an earth-working tool with an overload shifting means.
