Abstract: A shear sleeve having a shearing zone of reduced cross-sectional area is fixed at the roll end portion of the shaft of a spindle coupling. The sleeve carries means coacting with a roll end sleeve for rotating it and the shaft. Mating surfaces of the shear sleeve and shaft are in contact during normal operation to prevent bending of the shear sleeve. When the shear sleeve shears under excessive torsional stress the surfaces separate and one end of the shear sleeve rotates freely on a bearing, or bearings, mounted on the shaft.

Abstract: An elastic coupling for transmitting torque from a driving shaft to a driven shaft and for damping torsional vibrations comprises packets of flexible leaf springs locked between a hub connected to one shaft and a clamping ring concentric with the hub. The hub and clamping ring define an annular chamber filled with a damping fluid. The packets of leaf springs extend radially and have outer leaf springs having a transverse cross section which tapers inwardly from an outer to an inner end. The outer leaf springs are so dimensioned that their maximum flexure is at least equal to the difference between the thicknesses of the outer and inner leaf spring ends.

Abstract: Herein disclosed is a torsionally resilient shaft coupling for serially transmitting torque and to provide a substantial amount of torsional flexibility between a pair of axially spaced coaxially aligned shafts. The torsionally resilient shaft coupling comprises a first inner sleeve and a second inner sleeve coaxially aligned with and axially spaced from the first inner sleeve. A first outer sleeve is connected to a first of the shafts and surrounds the first inner sleeve forming a first annular space therebetween. A second outer sleeve is connected to a second of the shafts and surrounds the second inner sleeve forming a second annular space therebetween. At least one first annular torsionally resilient member is interposed in the first annular space and is connected to the first inner sleeve and to the first outer sleeve to provide primary torsional flexibility between the first outer sleeve and the first inner sleeve.

Abstract: A joint for homokynetic transmission of rotary motion between two concurrent shafts of which head portions are mounted. The head portions are connected by pairs of articulated driving-rods each slidably and rotatably disposed in a respective bore in a respective head portion. All the pairs of rods ensure the rotary transmission, and both head portions are also hinge-coupled with double articulation line by means of coupling-boxes loosely mounted on the head portions.

Abstract: A drive line vibration absorber, for a mass elastic system having an engine operatively connected to a gear train through an elongated drive shaft, includes an inertia mass disposed in parallel relation to such mass elastic system and a resilient ring secured to the mass elastic system in axially driving cooperation with the inertia mass and permitting limited torsional movement thereof for effectively reducing the amplitude of the relatively low natural frequency torsional vibrations of the mass elastic system.

Abstract: A TV tuner has a housing and a rotating channel selector shaft mounted on the housing. There are a plurality of individual support members positioned by and mounted on parallel flatted areas of the shaft, which flatted areas vary in size to assure correct placement of the support members. Individual coil strips, each carrying a tuning screw, are fixed to the shaft assembly. A simplified clutching arrangement for controlling adjustment of the screws utilizes a coil spring to provide the initial force for moving a pinion gear into operating engagement with the tuning screws. The tuning screws are held by resilient arms which bias the head of the screws toward the shaft to thus firmly maintain the screws in any adjusted position. Each of the coil strips have contacts extending outwardly from one side and positioned to be in electrical and mechanical contact with cantilever spring members fastened to a printed circuit board which in turn is held by the housing.

Abstract: Universal joint having a first cylindrical member with a cylinder axis perpendicular to the torque transmission axis and with a ribbed and slotted cylinder surface, a second member forming a cage around the first member and having an exterior periphery defining a second ribbed and slotted cylinder surface with the cylinder axis perpendicular to the first-mentioned cylinder axis, and a third member forming a cage around the second member.

Abstract: A power take-off shaft assembly comprises a hollow drive shaft rotatable at one speed; a drive sleeve surrounding said shaft and rotatable simultaneously at another speed; a power take-off shaft with differently splined ends each adapted to fit within the drive shaft and with a central flange having an inner circle of equally spaced holes counterbored at one side of said flange and an outer circle of equally spaced holes counterbored at the other side thereof; and stepped bolts able to reach through said holes only from the counterbored ends thereof to secure the power take-off shaft to the drive shaft when fitted in said inner circle of holes whilst one end of the power take-off shaft projects operatively, and to secure the power take-off shaft to the sleeve when fitted in said outer circle of holes after turning said shaft end-for-end so that its other end projects operatively.

Abstract: A clutch arrangement for a motor driven chain saw having a first clutch element driven by the motor shaft and a second clutch element normally engaged with the first clutch element but disengageable therefrom and a centrifugal clutch between the second clutch element and the drive sprocket for the saw chain. The second clutch element includes a spring disc and is axially yieldable between clutch engaged and clutch disengaged positions. A lever is provided moveable for disengaging the clutch elements and a brake member connected to the lever is operable for braking the drive sprocket when the clutch elements are disengaged.

Abstract: This tripod homokinetic coupling, intended in particular to be employed in front-wheel drive automobile vehicles, is improved in order to achieve an axial retention which is a function of the torque transmitted and thereby avoid percussions which are produced in conventional arrangements or an excessive wear.For this purpose, the axes of the raceways for the rollers on the trunnions are inclined with respect to the axis of the associated shaft so that there results on the rollers an axial force whose orientation and magnitude depend on the sign and the magnitude of the torque transmitted.

Abstract: A detent type tuning mechanism for a UHF tuner having a continuously variable tuning shaft includes a detented selector shaft, a gear train interconnecting the tuner shaft and the selector shaft, and a memory type fine tuning mechanism including a rotatable turret having mounted thereon a plurality of cams each engageable by a fine tuning shaft when the selector shaft is positioned in predetermined ones of the detent positions. Each cam serves as a memory fine tuning system for a predetermined group of adjacent UHF channels. A cam follower interconnects one of the cams and the tuning shaft, and serves to rotate the tuning shaft in response to the rotation of one of the cams by the fine tuning shaft. An indicator dial provides a numerical display of the precise UHF channel selected at each position of the detented selector shaft.

Abstract: A positioning device has a pneumatic motor for longitudinally translating an arm. Four bars are parallel with the arm and form three guideways along which stopping devices can be lockable in desired positions. The stopping devices have heads that are selectively activatable into positions to form abutments for a head of the arm in order to define stop positions for the arm when the arm is moved by the motor that stalls when the arm is stopped. A shock absorber provides for a gentle stopping of the arm and its distance of operation prior to a stop position varies with the distance of displacement of the arm.

Abstract: A flexible torque-transmitting element for tying the driven member of a flexible coupling to the driving member thereof includes a body of flexible material (such as rubber, or another elastomer) that has a rim zone. A fabric insert in said body of flexible material projects radially outwardly beyond said rim zone of said body of flexible material and forms a clamping zone situated outside said body of flexible material. Such a torque-transmitting element may be associated with annular clamping means that apply clamping pressure only against the portion of the fabric insert situated outside the body of flexible material.

Abstract: A flexible shaft coupling consisting of a rigid plate, and shaft connection segments connected to the plate by elongated resilient tongues. The coupling is formed by cut-outs from a solid plate. Besides angle errors of the shafts to be coupled, this shaft coupling also takes up eccentricity errors and displacement in the axial direction, and forms a play-free homokinetic connection between two shafts. A comparatively high torsional rigidity of the shaft coupling is ensured.

Abstract: The invention relates to a position device which rides over a surface for controlling a cursor over a visual display. The device generates signals indicative of its position to cause the cursor to be displayed on the display at a corresponding position. The device includes a control mechanism that comprises a transport sphere coupled with rotatable shafts which represent the position of the device in terms of Cartesian coordinates. The sphere is in contact with the surface over which the device rides and the rotatable shafts contact the sphere at a position on the sphere approximately 90.degree. from the contact loci of the sphere and the surface.

Abstract: A UHF Tuner device having a first rotating member rotating unitarily with a coarse tuning rotating shaft and adapted to be indexed and held in a position to which it has been thus rotated; a second rotating member rotated unitarily with a fine tuning rotating shaft; and a third rotating member rotated by the rotation of the second rotating member thereby to vary the capacitance of a variable capacitor of a tuner device proper, the second and third rotating member rotating unitarily with the first rotating member at the time of channel-selection coarse tuning when the coarse turning rotating shaft is rotated, and the third rotating member being rotated in accordance with the rotation of the second rotating member at the time of fine tuning when the fine tuning rotating shaft is rotated.

Abstract: A safety guard for a machine tool, such as a punch press, having an operating part, such as a ram, having a control member. The guard comprises gates between the operating part and a machine tool operator. One of the gates is slidable across the front of the machine tool. Another of the gates is disposed at the side of the machine tool and has a pivot on which it is swingable. The sliding gate carries a control actuator and closes on a path which intersects the free end of the swinging gate which has a bumper. The sliding gate is powered by an air cylinder having a control accessible to the operator. When either gate is open, the machine tool control member is deactuated and there is no danger that the machine tool will operate to endanger the operator's hands. The machine tool operator actuates the gate control to close the sliding gate.

Abstract: An indexing mechanism comprises a detent spring secured to a shaft and biased into engagement with a long wearing hill and valley insert secured to a housing. A variety of inserts can be secured to a standard housing providing a variety of switching positions and angles of indexing. A plurality of ears extending radially from the insert engage notches within the housing and a pair of spaced arms integral with each of the ears are biased against the walls of the notches to rigidly secure the insert to the housing. A stop element secured to the shaft is provided with a plurality of nubbins engaging a plurality of nubbin receiving notches provided in the detent spring for reinforcing the rotation of the detent spring in response to the rotation of the shaft.

Abstract: Apparatus for connecting motors in tandem and particularly in vertical alignment includes a coupling for connecting the lower end of the shaft of the upper motor to the upper end of the shaft of the lower motor. A tubular member surrounds the coupling with its upper end extending into the outer housing of the upper motor and its lower end threaded into the outer housing of the lower motor. A lock ring surrounds the tubular member and has a keyed connection with the outer housing of the lower motor. The upper end of the lock ring and the lower end of the outer housing preferably have ten equally spaced keyways therein. A key extends into a pair of matching keyways of the lock ring and upper outer housing and screws hold the keys in place by passing through aligned holes in the lock ring and upper outer housing into threaded holes in the tubular member.

Abstract: A rotary coupling of the torque limiter type comprises two bodies rotating axially one within the other, with intermediate connecting elements inserted between respective surfaces of said bodies and subject to the action of springs acting in the tangential direction. The connection between the two bodies is effected by means at least partially deformable adapted to rub coaxially on one of said bodies, thereby receiving the motion of the other body, through a drive device combined with elastic means of the torsion spring type. The elastic means may be constituted by at least one torsion bar arranged for example axially to the coupling. The intermediate connecting elements, receiving the effect of the torsion means, may be constituted by shoes.