Abstract: A push rod extends through the main shaft of a change speed gear transmission to release a friction clutch on that shaft. The other end of the push rod is engaged by a hydraulic actuator. An oil seal assembly for the push rod is prevented from being damaged by leakage of hydraulic oil, and this is accomplished by means of an air gap and vent between the hydraulic actuator and the oil seal assembly.

Abstract: Apparatus (1) for driving take-up elements (7) for palletizable load units (4), which are intended to effect cycles of movement each including at least a first and a second horizontal movement in opposite directions from each other, with a vertical movement in between. These movements are driven so as to follow each other without intermediate stoppages and with a continuous and substantially harmonic variation of the velocity and acceleration of the take-up elements (7). The apparatus (1) includes a linkage (10, 12) interposed between the take-up elements (7) and the motor (13) for driving their horizontal movement, and cam means (24, 25) driven by the motor (13) for driving the vertical movement.

Abstract: Two flyweight shafts 12,22 are coupled by means of gears 18,30 each attached to one flyweight shaft 12,22 and two intermediate gears 54,56 each engaging one of these gears 18,30 and mesh with each other. Each of the intermediate gears 54, 56 is mounted on one of the oscillating cranks 32, 34 pivotably mounted on the associated flyweight shaft 12 and 22, respectively. The oscillating cranks 32 and 34 are held parallel to each other and can be pivoted to effect a relative phase displacement of the flyweight shafts 12, 22. The oscillating cranks 32,34 are provided with counterweights 62,64 and are thereby mass balanced to prevent oscillations from becoming effective on the oscillating cranks 32,34 and thus on the adjusting mechanism 60 during vibratory operation due to intertial forces.

Abstract: The described motion converter has a housing in which a drive shaft is interconnected with a rotary motion power source. The drive shaft has an extent having a left-hand thread adjacent one end thereof and an extent having a right-hand thread located adjacent the opposite end thereof. Threaded nuts on the left and right hand threaded portions each have spiral spring clutches. An actuator is slidingly received upon the intermediate portion of the drive shaft with pins located at opposite ends of the actuator to engage one spring clutch while releasing the other. A spring loaded positioning device associated with the actuator insures that the actuator is positively located to engage one or the other of the clutches and prevents the actuator from hanging up at an intermediate position.

Abstract: A rear wheel drive vehicle is converted to a four-wheel drive vehicle by operation of a hydraulically operated clutch which is controlled by a hydraulic valve. The hydraulic valve is spring biased to a clutch disengaged position and is hydraulically actuated to its clutch engaged position through operation of a pilot valve circuit which includes an electrically operated solenoid valve. The pilot valve circuit includes a flow restrictor providing modulated flow thereby affording a controlled pressure rise in the clutch whereby a smooth engagement of the front wheel drive is achieved.

Abstract: A fluid coupling device is disclosed of the type including an output coupling (13) and an input coupling member (11). The speed of operation of the coupling device is determined by the amount of fluid in the operating chamber (37), and fluid communication from the reservoir chamber (41) into the operating chamber is controlled by movement of a valve arm (49) relative to a fill opening (50). The fill opening includes an outer edge (79) which is disposed at an angle relative to a radial line, such that the valving is of the modulating type, i.e., movement of the valve arm in response to increasing temperature results in radially outward movement of the outermost point of the flow area. In accordance with the invention, the valve arm defines an included open area (73) having a leading edge (74) and a trailing edge (75). The flow area is determined by the area of overlap (77,81) of the open area (73) and the fill opening (50).

Abstract: A drive unit comprises a motor with a motor casing, a gear box with a gear box casing, and a pulled-type clutch for torque transmission between the motor and the gear box. The gear box casing is to be fixed to the motor casing. The clutch comprises a clutch release system for transmitting a clutch release force from an actuating pedal to a diaphragm spring of the clutch. In this clutch release system there is provided a snap connection which is closed by approaching the motor casing and the gear box casing towards the relative operative position.

Abstract: A damper disc used as a clutch disc of a friction clutch includes a spline hub splined to an output shaft and having a radial flange, a pair of annular side plates arranged at both sides of the flange and having a radially outer portion to which torque is transmitted, and torsion springs arranged at openings in the flange and the side plates. At least some of the torsion springs consist of coaxially arranged double compressible coil springs including a diametrically large outer spring and a diametrically small inner spring. Each of these small springs is hourglass-shaped so that their diameters gradually change along their length and their axially middle portions have the smallest diameters. The diametrically large outer springs may also have an hourglass shape.

Abstract: Case erector and bottom sealer apparatus having a pick up assembly for grippingly engaging a flat folded case blank on the top of a plurality of case blanks in vertical stacked relationship and elevating and moving the picked up blank forwardly, an infeed conveyor assembly for receiving the picked up case blank in its forward position and moving it to an erector station, an erector assembly at the erector station for grippingly engaging opposite sides of the blank and opening the case blank, folder assemblies movable between retracted and folded positions for first folding the bottom minor flaps of the erected blank and then partially folding the bottom major flaps to retain the bottom minor flaps in a folded condition, a walking stick assembly for moving the erected case from the erector station to a compression station, a glue gun assembly for applying adhesive to the bottom minor flaps as the erected case is moved to the compression station, a compression assembly at the compression station to complete the

Abstract: A clutch release bearing of the type comprising an actuator fork 13, acting on an operating member 10, two axial guide flats 32A, 32B formed in diametrically opposite positions, and two radial arms 34A, 34B.With respect to the axial plane P of the assembly which is substantially perpendicular to the guide flats the axial guide flats 32A, 32B are entirely positioned, one on the first side of this median axial plane P, the other on the other side of this median axial plane P, so that a bayonet or quarter-turn type assembly procedure on the actuator fork 13 is possible.

Abstract: A two mode operable piston pump has a cam lock with a shaft biased into the drive axial passage of a cam shaft to lock the cam shaft to a lever body, a lock edge on the lever body engaging a flat on a head portion of the cam lock. Inserting a power tool into the drive axial passage opposite the head pushes the shaft up and releases the cam shaft for operation of the pump in a power mode.

Abstract: In a heavy-duty pump jack as used in oil well pumping, a leverage beam is oscillated by a motor-driven crank and the leverage beam acts upon the walking beam through an adjustable stroke controller.

Abstract: An electromagnetic two-stage clutch for the driving of units, especially refrigerant compressors in motor vehicles. The clutch includes electromagnets and a drive disk. The drive disk is adapted to be frictionally engaged by driving a shaft of the unit with the aid of electromagnets through armature disks, selectively, by two pulleys of differing diameters. The pulleys are connected with a counter pulley by way of V-belts. The drive disk is mounted in a supported fashion in a neck of the unit and is arranged between the two pulleys. One pulley is supported on the outside or outer surface of the neck of the unit.

Abstract: An apparatus is provided for machining tubular and/or rod-shaped workpieces. The apparatus has a rotational drive or motor for the workpieces to be machined. A switching device, which is accommodated in, and actuated by, a foot pedal, is connected to the rotational drive. The foot pedal is provided with a restart arrestor, and/or an emergency shutoff device to provide protection against unintended restarting of the apparatus after a power failure, or to instantaneously disconnect the apparatus from the electric circuit in case of danger.

Abstract: A manually disengageable centrifugal clutch for motor vehicles has a clutch cover fixed to a flywheel, a pressure plate axially movable relative to the flywheel, and an intermediate disc. An intermediate plate defines, together with the pressure plate, a plurality of outwardly narrowing spaces for radially movable centrifugal weights and is spring biased towards the pressure plate. The intermediate plate is suspended on disengagement arms and is movable thereby away from the pressure plate. In one position at a certain distance from the pressure plate, the spaces for the centrifugal weights are widened so much that the weights cannot exert any pressure on the pressure plate. The clutch is thereby disengaged regardless of rotational speed, the disengaging force only depending on the spring force on the intermediate plate.

Abstract: A torsional vibration damper assembly providing a variable torsional spring rate in conjunction with variable damping friction torque, which includes a hub having a radial flange, a pair of intermediate drive plates carrying the friction facings and encompassing the hub flange, an outer pair of spring retainer plates axially disposed adjacent the drive plates, and damper springs received in axially aligned spring windows formed in the retainer plates, drive plates and hub flange. Rates and travel of the damper assembly to provide a multi-stage operation are accomplished by modifying the locations or sizes of the damper springs, shape of the spring windows in the various plates, stop pins and/or stop pin slots.

Abstract: A hydraulic coupling which includes a primary coupling part having a pot-shaped pulley or sheave, and a secondary coupling part including a housing provided with a cover. The primary and secondary parts are supported relative to one another in such a manner that they can rotate and the pot-shaped pulley or sheave is located in a working compartment formed in the housing. The working compartment is connected by way of a recycling arrangement, including a bore in the cover, to a supply channel to enable a recycling of the coupling fluid. A circumferential surface of the pulley or sheave is provided with spiral or thread-like grooves. At least one baffle or dam body is provided in order to pump off the coupling fluid from the working compartment. The housing is provided, in an interior thereof, with a circumferentially extending channel having an axial length or width when extends over a portion of a depth or axial length of the pulley or sheave.

Abstract: A damper disc applicable to a friction clutch disc, wherein each side plate is arranged between each sub-plate and a flange of a hub splined on an output shaft, so that a distance between both side plates becomes small, and the side plates can stably support the portions of the torsion springs which are adjacent to the center thereof, in other words, portions adjacent to the flange, and thereby high stability in the twisting operation can be obtained.

Abstract: The spline-ended connecting shaft of an engine-accessory disconnect device has a radially outwardly projecting drive flange coaxially secured to an intermediate portion thereof. A housing captively retains the flange, permitting axial translation and rotation of the flange and shaft relative to the housing. A burst of compressed air injected into the housing is caused to exert sequentially opposite forces on the flange to rapidly initiate and terminate axial uncoupling motion of the shaft without imposing appreciable rigid impact force on the disconnect components. The shaft extends through openings in end walls of the housing so that it is freely rotatable and axially translatable relative to the housing without touching the surfaces of the housing openings.

Abstract: A double acting drive mechanism (10) includes a driving member (12) and a pair of driven members (16) and (18) which carry a small diameter pulley face (24) and a larger diameter pulley face (26) respectively. A clutch mechanism (34) normally couples one of the driven members (16) for rotation with the driving member (12) and the driven member (18) freewheels. Upon energization of the electromagnetic actuator (48), the armature (56), which rotates with the other driven member (18), engages the clutch mechanism (34) to couple the other driven member (18) for rotation with the driving member (12). Engagement of the armature (56) with the clutch mechanism (34) disengages the clutch mechanism (34) from the one driven member (16).