Jean Walterscheid Gmbh

Hubert Geisthoff

Clemens Nienhaus

Theo Buthe

Klaus Kampf

Wilhelm Von Allworden

Felix Mikeska

Paul Herchenbach

Horst Kretschmer

Jurgen Vollmer

Alexander Post

Wilhelm Von Allwoerden

A universal joint (1) has two joint yokes (2 and 3) each including two yoke arms (4 and 5). A supporting member (8) including legs (9 and 10) is arranged to extend transversely relative to the rotational axis (D) of the joint yokes (2, 3). The connection of the two joint yokes (2 and 3) is effected through yoke arm through-bores (6 and 7) and the support member bores (11 and 12) via a bearing pin (13).

Hooks universal joint having supporting member

The invention is directed to a freewheel clutch which transmits torque in two directions of rotation and controls the blocking pawls by control rings which are held back by friction rings ounter to the rotary motion and by guide extensions and pivot journals of blocking pawls guided in radial slots in guide extensions which move the blocking pawls out of or into engagement with the assigned support recesses of the inner part into a disengaged or engaged position. While, for instance, the one blocking pawl is moved into the torque transmitting position, simultaneously, the other blocking pawl is moved out of the position permitting torque transmittal. This assures a short response travel and with it a rapid switchover from the one driving direction to the other without interfering with the freewheeling motion.

Pawl freewheel clutch

A locking mechanism for fixing an outer part (5) on an inner part (4) having locking members (8) which are guided in apertures (7) of the outer part so as to be radially movable in a limited way. In the locking position, these locking members (8) are supported radially outwardly on a locking ring (10). A control ring (16) retains the locking ring in the open position. For this purpose, the control ring (16) is displaced eccentrically and is supported on a stop (19) associated with the outer part (5). By inserting the inner part (4), the control ring (16) is aligned coaxially by the control members (8) so that a spring (12) loading the locking ring (10) can act to move the control ring (16) across the stop (19) so that the locking position is achieved.

Locking mechanism for fixing an outer part on an inner part

A locking device (6) for connecting a driveshaft (4) to a power take-off shaft (2) includes a coupling sleeve (7) mounted on the driveshaft in which locking members (12) are guided which lock the coupling sleeve against axial movement relative to the take-off shaft. A locking sleeve (14) is movable on the coupling sleeve (7) to lock the locking members (12) against movement or release them. A latch arrangement is provided to latch the locking sleeve in its release position during connection. The latch arrangement includes a stop (24) extending inwardly from the locking sleeve (14) and engageable with a stop (19) on the coupling sleeve (7) by tilting the locking sleeve on the coupling sleeve.

Locking device for connecting a driveshaft to a power take-off shaft

An overload coupling for the protection of drive trains on machines, particularly agricultural machines powered by a tractor, protects against overloading in at least one rotational direction. A coupling sleeve is mounted for rotation around a coupling hub of the overload coupling. Relative rotation between the hub and sleeve is about a coupling axis. A plurality of circumferentially spaced recesses are provided in the coupling hub which each contain a rotatably mounted rotor. The rotors are mounted about their own rotor axes which are parallel to but spaced apart from the coupling axis. Each rotor contains a radially movable driver cam which is spring-loaded and has cam surfaces for engaging detent grooves in the sleeve. With the driver cams engaged in the detent grooves, relative rotation between the hub and sleeve is resisted. By shaping the cam surfaces and adjacent abutment surfaces of the driver cams, the direction and force of disengagement can be set between the coupling hub and coupling sleeve.

Overload coupling for protecting drive trains especially on agricultural

A wide angle double Hookes joint comprises a double inner yoke 2a, 2b; two outer yokes 3 which are each pivotally connected to the inner yoke by a respective cross member 4, each cross member comprising a first pair of trunnions received in bearings in yoke arms of the outer yoke and a second pair of trunnions received in bearings in yoke arms of the inner yoke; a guide member 9 having bearing means 8 engaging said outer yokes to guide them to provide homokinetic torque transmission, said guide member 9 being mounted in the inner yoke for radial movement relative to the axis of rotation thereof; a pair of guide plates 10 in the inner yoke between which said guide member 9 is radially movable with said bearing means 8 engaged within identical radially extending slots 17 in said guide plates, and said guide plates being rotatable about the axis of rotation of the inner yoke.

Double hookes joint

A Hookes joint comprising a cross member (10) and yokes (12) has respective lubricant bores (22, 24 and 26, 28) formed in journals (14, 16 and 18, 20) of the cross member. Leaf springs (48, 50) are located within the respective throughbores to project outwardly of the ends thereof into nonrotatable engagement with bearing cups (30, 32), each nonrotatably secured within ends of a yoke. Each bearing cup permits rotation of an associated cross member journal therein whereby, upon relative rotation between the cross member and a yoke, a respective leaf spring (48 or 50) rotates within the throughbore (22, 24 or 26, 28) causing a wiping or sweeping action of the spring within the lubricant in the bore thereby ensuring that the bore does not become constricted. Uniform distribution of lubricant to the bearing cups is thereby assured.

Lubrication arrangement for hookes joint

A coupling assembly including a lock latchable in the unlocked position particularly for connecting a universal shaft with a power takeoff shaft in agricultural implements, wherein a coupling sleeve on the universal shaft may be slipped into torque transmitting engagement onto a power takeoff shaft and held in the locked position by locking members engaging within an annular groove of the power takeoff shaft. A lock ring holds the locking members in the locked position and when it is desired to release the coupling, a gripping sleeve is moved so as to disengage the lock ring from the locking members to enable disengagement of the locking members from the annular groove in the power takeoff shaft. A resilient spring washer having an axial slit is provided with a first and a second conical face on opposed sides thereof, with the first conical face engaging a first complementary conical face on the gripping sleeve so as to drive the spring washer against a second complementary conical face on the coupling sleeve to radially expand the spring washer when the assembly is to be brought into the unlocked position by movement of the gripping sleeve. The spring washer is formed with an inner cylindrical bore which engages a cylindrical seating face on the coupling sleeve to maintain the coupling assembly latched in the unlocked position.

Driveline coupling with safety interlock mechanism latchable in the open

A protective bellows, particularly for use in drivelines of agricultural implements, is formed with a resilient bellows having a lubricating opening with a removable plug. A resilient ring extends around the bellows in one of the folds thereof, and a connection member is provided on the resilient ring for connecting the plug thereto.

Protective bellows assembly with plugged lubricating aperture

In a mechanism for connecting together in torque transmitting engagement a coupling sleeve and a power takeoff shaft, particularly in agricultural implements, there is provided a drawing lock which may be arrested in the open position. The drawing lock includes a locking ring which holds a plurality of radially movable torque transmitting balls in their locked position during torque transmission of the assembly. A slotted spring ring is provided which engages the torque transmitting balls to hold them radially inwardly thereby to arrest the device in the open position. When a power takeoff shaft is inserted into the bore of the coupling sleeve, the torque transmitting balls are moved radially outwardly and, as a result, the slotted spring ring resiliently expands in diameter thereby to cause a first stop face of the ring to become disengaged from a supporting face of a supporting ring which is axially affixed to the coupling sleeve. The slotted ring then moves axially out of engagement with the torque transmitting balls and a second stop face on the ring engages the supporting face of the supporting ring. In accordance with a second embodiment of the invention, the slotted spring ring is provided with a member bridging the slot thereof extending across both ends, but permitting relative movement between the ends of the ring so as to ensure corresponding movement of both ends, even where only one end of the ring is urged radially outwardly by a torque transmitting ball.

Drawing lock for torque transmitting engagement between two shaft

A drive shaft having an annular groove is placed in driving connection with a coupling sleeve by engagement members which constitute spherical balls radially movable within apertures in the coupling sleeve for engagement within the annular groove of the drive shaft. A locking ring engaging around the engagement members holds them in the locked position within the annular groove and when the mechanism is in the unlocked position, the locking ring is held axially away from the locked position by a latching member which engages within the apertures of the coupling sleeve to hold the locking ring in the unlocked position against the biasing force of a spring. A guide ring affixed to the coupling sleeve guides the locking ring by means of a gripping sleeve affixed thereto for movement relative to the coupling sleeve axially and nonrotatively with the guide ring including apertures through which the latching member engages when it is moved between the latched and the unlatched positions.

Driveline coupling with safety interlock mechanism

An angular transmission mechanism having two axles angularly disposed for torque transmission therebetween by two bevel gears which are embraced by an elastic toothed belt having a surface area which, in the untensioned condition of said belt, has the shape of a truncated cone, the belt having teeth which correspond to the teeth of the bevel gears.

Angular torque transmission mechanism

In a drive shaft assembly particularly for agricultural implements, a pair of telescoping tubes which may be placed in torque transmitting engagement with each other are provided with a profiled hub on the outer tube at the end thereof where the inner tube is inserted, with the profiled hub consisting essentially of formed inserts in a number corresponding to a number of ribs provided on the inner tube, with contact faces being provided on both sides of the inserts in the circumferential direction to correspond to the shape of the ribs, the insert being held in rotationally fixed engagement with the outer tube.

Profiled hub for drive shaft assembly

An overload clutch wherein a clutch hub and a clutch sleeve are brought into and out of driving engagement by spring loaded driving members in the hub engaging into recesses in the sleeve. The disengagement of the clutch is achieved in stages by constructing the recesses so that the driving members will disengage individually at different torque transmission levels. More specifically, the depth of the recesses is varied to vary the disengagement levels of the driving members.

Overload clutch

A drive shaft assembly including a pair of telescoping drive shaft parts one adapted to fit within the other having a tapered member on the one drive shaft part which extends outwardly therefrom and which is retractable against the force of a spring. An introducing funnel is provided on the other drive shaft part to guide insertion of the one drive shaft part and the two drive shaft parts are formed with a profile having a generally lemon-like shape with a pair of opposed radially extending beads. The one drive shaft part is formed within the areas between said beads with an axial cutout and a guide piece is provided on the other drive shaft part for guiding the one drive shaft part into engagement therewith, the guide piece having associated therewith an introducing inclination which is directed to extend opposite to the direction of rotation of the drive shaft assembly.

Growing community of inventors

Lohmar, Germany

Hubert Geisthoff