Jean Walterscheid Gmbh

Gkn Walterscheid Gmbh

Hans J Langen

Herbert Coenen

Clemens Nienhaus

Horst Kretschmer

Norbert Fartmann

A lubricating device (13) for a telescopic shaft has a lubricating element and a reservoir. The lubricating device (13) is inserted into a cavity (18) of the inner profiled tube (7). The lubricating device (13) serves to lubricate the surface portions of the outer and inner profiled tubes (6, 7), which slide on one another. Thus, it is possible to achieve permanent lubrication.

Lubricating device for lubricating the profiled tubes of a telescopic

A coupling device for a tractor has a frame (4) which is mounted on the rear underside (3) of the tractor (1). A drawbar (14), with a coupling member (15), is guided in the frame (4). The drawbar (14) is moved by a slide (18) and can be swung sideways about a vertical axis. Centering pieces (34) and stop blocks with centering faces (35) and stop faces (38) engage one another to laterally align and fix the drawbar (14). In a lower position the drawbar facilitates lateral swivelling movement about the connecting pin (22). In an upper towing position the drawbar (14) is laterally fixed by the centering pieces (34) and the stop blocks (38). This results in improved control of the coupling members associated with the to be towed implement through lateral alignment of the drawbar and its automatic transfer into its centered position.

Coupling device for attaching towable implements to a tractor

During monitoring of the driveline of an agricultural implement in respect of overloading and the degree of loading, from a first occurrence of slip, the slip revolutions occurring during a measuring cycle are added up. If the number of slip revolutions exceeds a permissible number of slip revolutions, a signal is generated indicating an overloading condition, a new measuring cycle beginning upon release of the signal to be able to take into account the effects resulting from a change in the behavior of the tractor driver, the nature of the signal being changed responsive to the speed differential between the input speed and output speed of a friction coupling permitting relative rotation. Furthermore, the condition of loading is indicated on the basis of the ratio of the actually measured number of slip revolutions to the number of maximum permissible slip revolutions so that the driver receives a warning prior to a blockage or case of overloading which may lead to overheating or destruction of the coupling serving to protect the implement.

Process and device for measuring and indicating load conditions in

The invention relates to an three-point coupling device (3) for connecting a tractor to an implement (4). Two lower hitch arms (5, 5a) have been provided with catching hooks (7, 7a). An upper hitch arm (8) has also been provided with a catching hook (11). The lower hitch arms (5, 5a) may be raised or lowered by a power drive via lifting bars (10, 10a) and lifting arms (9, 9a). The upper hitch arm (8) is suspended from a holding device (20, 20a) which is associated with the lifting bars (10, 10a). As a result, the upper hitch arm (8) may be moved jointly with the lower hitch arms (5, 5a) upon actuation of the power drive which moves the lifting arms (9, 9a) and the lifting bar (10, 10a). It is no longer necessary for the tractor driver to hold the upper hitch arm (8) himself and place it on the upper coupling point (14) of the implement (4).

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Frechen, Germany

Hans J Langen