Abstract: A disconnection coupling (11) is provided for installation between the input shaft (41) of an accessory and an engine to which the accessory is mounted. An input member (20) of the coupling (11) is connected to the engine in lieu of the accessory's input shaft (41). This provides engine power to the input member which can be selectively transferred to the accessory's input shaft. An intermediate member (30) is rotationally connected to an output member (40) which, in turn, receives the accessory's input shaft (41). The intermediate member (30) is able to be axially displaced with respect to the output member (40), while a spline joint (35) maintains the rotational connection between the intermediate and output members (30, 40).

Abstract: An improved fine adjusting mechanism for a preset type tuner, which is so arranged that, with a ring having cam portions being fitted under pressure onto a fine adjusting shaft of a tuner for simultaneous rotation with it and also for slippage with respect to the fine adjusting shaft against a torque larger than a predetermined extent, a lever having a transmission gear rotatably mounted on it is urged by a spring force so that its actuating projections are held in pressure contact with the cam surface of the ring with the cam portions, so that rotation of the fine adjusting shaft is converted into a pivotal movement of the lever through the ring so as to positively engage the transmission gear with each of gears having threaded portions for an efficient local oscillation frequency adjustment.

Abstract: A magnetic coupling assembly for driving a conveyor roll from a power drive while automatically disengaging the conveyor roll from the power drive when an accumulation occurs of the parts being transported by the conveyor. In one embodiment, a drive sprocket and conveyor roll are mounted on a fixed axle between a pair of spaced conveyor side rails. The conveyor roll includes a tube portion having a permanent magnet mounted therein and the drive sprocket includes a sprocket hub having a field face member secured to one of its ends in opposing relationship to the permanent magnet. By varying the air gap between the permanent magnet and field face member, the torque capacity is varied, thereby permitting slippage between the drive sprocket and conveyor roll at different torque levels.

Abstract: A torque limiting power transfer mechanism for use on an apparatus connectable to a power takeoff shaft, such as pull-type agricultural equipment is disclosed wherein the drive shaft connectable to the power takeoff shaft is rotatably connected to the clutch mechanism. Stops affixed to the clutch mechanism limit the amount of rotational movement of the drive shaft relative to the clutch and provide a limited amount of rotational movement to facilitate a connection of the drive shaft to the power takeoff shaft, yet provide a positive driving connection between the drive shaft and the clutch mechanism.

Abstract: A torque limiting clutch having a torque limit which is easily calibrated and relatively constant throughout the service life of the clutch. The clutch includes a pair of rotatable members which are rotatably coupled by resilient friction members yieldably engaging one of the pair of members and securing to the other of the pair of members. The friction elements are configured to achieve substantially uniform friction force and wear along their friction surfaces. According to one embodiment of the invention standard commercial snap rings may be employed as the friction elements.

Abstract: A fail-safe flexible coupling is provided for coupling shafts, typically in an aircraft, wherein the coupling includes a plug coupled to the first shaft and a socket coupled to the first shaft and a socket coupled to the second shaft. The plug is arranged and configured to loosely mate with the socket when the shafts are being rotated together by virtue of their primary coupling. When the primary coupling fails, the socket and plug engage each other securely though the shafts continue to be driven notwithstanding the failure of the primary coupling between them. The plug is particularly characterized by a screw portion and head portion. The screw portion is threaded into the first shaft. The coupling is secured to the first shaft by the head portion of the plug.

Abstract: A disconnect arrangement is useful for disconnecting high speed generators, such as those utilized in aircraft electrical systems, from a driving source, such as an aircraft engine. The disconnect coupling includes splined members at either end of a stub shaft which are coupled respectively to the generator and the engine. A carbide knife-edged plate is pivotable about one end of the plate and, in the normal or deactivated position, an extension of a solenoid armature prevents the knife-edge from contacting the stub shaft. When energized, the solenoid armature is retracted releasing its engagement with the knife-edged plate, and a spring forces the knife-edge to engage the stub shaft at a relatively thin-walled portion thereof. Friction generated causes localized heating and the relatively thin wall of the stub shaft becomes plastic, the stub shaft then separating into two portions effecting disconnection of the generator from the engine.

Abstract: A torque-transmitting drive having a driving member and a driven member spaced therefrom with an endless transmission belt engaging the members to transmit torque from the driving member to the driven member. The endless belt is folded over one of these members such that two strands of this belt pass over the one member and this same one member thereby does not pass through the endless belt. A bearing sleeve is further slippingly mounted on this one member, over which the endless belt folds such that one strand of the belt at the fold passes over the bearing sleeve. Thus, one strand at the belt fold is in driving engagement with the member and the other strand of the endless belt moves in the opposite direction such that the bearing sleeve is rotating in a direction opposite to that of the member over which the belt folds. When replacing belts, it is not necessary to disturb or dismantle the member over which the endless belt folds, as that member does not pass through the belt.

Abstract: In a hydraulically expandable friction coupling for connecting a shaft to a hub there are two concentrically arranged cylindrical sleeves between which a pressure medium is enclosed. The pressure of said pressure medium against the sleeves is adjustable by adjusting means in order to transmit a predetermined torque between the shaft and the hub. In order to ensure slipping between the outer sleeve and the hub when said predetermined torque is exceeded i.e. when the coupling is overloaded, the outer sleeve is formed with a greater wall thickness than the inner sleeve or at least one additional sleeve is fixed on the outside of the outer sleeve. The wall thickness of said additional sleeve is such that the combined wall thickness of the outer sleeve and the additional sleeve exceeds the wall thickness of the inner sleeve.

Abstract: This torque-limiting drive coupling in the annular hub of a drive sprocket has an oppositely-disposed pair of oblique internal notches in one of which is tightly seated one end of a steel driving leaf spring, the opposite end of which loosely fits the opposite notch. The central portion of this spring resiliently engages one of the flat sides of a hexagonal driven shaft for driven transmission of a conveyor roller mounted thereon under normal circumstances. This leaf spring, however, yields so as to slip over the corner ridges between the flat sides of the hexagonal shaft so as to permit the sprocket to continue rotation upon anti-friction bearings pressed therein while the shaft is halted or slowed by an obstacle, such as work accumulating on the rollers of an accumulating conveyor driven thereby.