Jean Walterscheid Gmbh

Gkn Walterscheid Gmbh

Norbert Fartmann

Karl Coenen

Clemens Nienhaus

Horst Kretschmer

Theo Buthe

Peter Schardt

Jurgen Schibrowski

Helmut Bober

Klaus Herbertz

Willi Schmandt

Klaus Kampf

Herbert Coenen

Norbert Muller

Hans J Langen

Joachim Laubner

Franz-Heinz Koch

Heinz Koch

A torque limiting coupling defines a longitudinal axis ( ) and has a coupling hub ( ) with circumferentially distributed through holes. Transfer elements are adjustably held in the holes. A coupling sleeve ( ) has first recesses corresponding to the through holes. A switching disk ( ) is arranged relative to the coupling hub ( ) between a torque transmitting position and a freewheeling position. The switching disk ( ) is urged towards the torque transmitting position. This urges the transfer elements in the direction towards the coupling hub ( ). The transfer elements engage, for torque transmission, in recesses of the coupling sleeve ( ). Coupling sleeve ( ), when a predetermined nominal torque is exceeded, is transferable from the torque transmitting position to the freewheeling position. Second recesses, corresponding to the through holes, receive the transfer elements in the freewheeling position. A locking pawl ( ), in a retaining position, interacts at least with one switching face ( ) of the switching disk ( ). The switching disk ( ) is transferable from the torque transmitting position into the freewheeling position. In the retaining position, the locking pawl interacts with a first retaining face ( ) of the coupling hub ( ) so that the torque limiting coupling ( ) is retained against rotation.

Torque limiting coupling

A coupling hook (5) for the lower steering arms (3) of a three-point attaching device of a tractor has a hook body (6) with a locking pawl (7). The pawl (7) is spring-loaded in the direction of the locking position. The locking pawl (7) is arranged in a recess (12) of the hook body (6) and projects through an aperture (13) into a bearing recess (10), which receives a bearing ball (11). For the purpose of supporting and guiding the locking pawl (7), the hook body (6) includes a first stop face (14), a second supporting stop (15) offset backwardly at a distance therefrom and a locking stop (16). In the locking position, the locking pawl (7) is supported on the looking stop (16) via a first supporting face (19), a second supporting face (21) and a locking face (22). The design is such that the contact between the locking face (22) and the locking stop (16) takes place below an imaginary connecting line (27) which is between the point of contact of the locking face (25) of the locking pawl (7) with the outer face (26) of the bearing ball (11), on the one hand, and the center (29) of the convex locking stop (16) on the other hand. An improved locking affect is ensured.

Coupling hook for the lower steering arms of a three-point attaching

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).

Three-point coupling device

A clutch assembly capable of providing several predetermined settings, wherein the components which support springs applying torque are not subjected to bending loads. The settings are achieved in that a supporting ring supporting a pressure plate against a clutch housing is provided with radially outwardly extending cams which are offset relative to the center thereof with two rows of apertures being provided in a cylindrical face of the clutch housing which are axially offset and offset relative to the angle of rotation and which correspond to the cams of the supporting ring and within which the cams are engaged.

Adjustable friction clutch assembly

A shaft connecting mechanism is provided between a slip-on hub and a power takeoff shaft by means of a control ring which extends around the slip-on hub and which is formed to have a pressure screw extend through a threaded bore therein, the pressure screw engaging against a clamping wedge in the slip-on hub which is formed with a trapezoidal configuration generally conforming with the configuration of an axiallly extending groove formed in the slip-on hub. Blocking members are arranged in radial apertures in the slip-on hub and pockets are formed in the control ring. The pressure screw when angularly aligned with the clamping wedge, places the control ring in the locked position and when the pressure screw and the clamping wedge are angularly unaligned, the blocking members enter the pockets in the control ring.

Shaft connection mechanism

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Siegburg, Germany

Norbert Fartmann