Abstract: Forward and reverse rotary tool, particularly for inserting and retracting a threaded element. The power-driven tool is designed primarily for surgical use and is capable of applying pressure against the free end of the threaded element during both the inserting and retracting operation, as into a bone. The shift from a driving mode to a retracting mode, or vice versa, is readily effected under conditions existing in an operating room. All movable and/or lubricated parts, other than the driven element, are housed to prevent leakage of lubricant. The tool comprises a unidirectionally driven pinion in constant engagement with a pair of counter-rotating clutch elements and means alternatively engageable with said clutch elements for rotative driving in one direction or the opposite direction.

Abstract: The blades of a rotary lawn mower are driven by a constantly rotating shaft through a clutch-brake assembly which, when the operator leaves the operating station of the mower such as the mower handles, automatically disengages the blades from the shaft and brakes the blades while permitting the shaft to continue to rotate. The clutch-brake assembly is self-energizing and normally is engaged but is held in the disengaged condition by an actuator which also is self-energized and which initially is energized by a spring. The latter is effective to disengage the clutch and actuate the brake thereby to prevent the blades from rotating until the operator moves a manual member at the operating station to overcome the spring which initially energizes the actuator. This de-energizes the actuator so that the brake is disengaged and the clutch is engaged whereby the shaft rotates the blades.

Abstract: A power transmission device for a power-operated lawn mowing machine, in which a rotational shaft for a prime mover and a rotational shaft for a cutting blade are interlocked with a friction clutch to be engaged and disengaged each other by an operating lever, and a disc brake to apply braking action to the cutting blade at the time of the clutch disengagement is provided between the movable engaging member of the clutch and a fixed member at the side of the prime mover.

Abstract: A clutch for engaging a driving member with a driven member automatically upon application of torque to rotate the driving member in either direction, for maintaining engagement in either the drive or coast mode of operation and during the transition between drive and coast, for maintaining engagement in either forward or reverse operation and during the transition between forward and reverse, and for disengaging automatically upon interruption of the torque and slight rotation in the opposite direction.

Abstract: Corresponding sets of radially distributed helical surfaces in a cone clutch axially urge movable cone members selectively into engagement with either of two mating cone members thereby enabling a clutch output member to be driven in either rotary direction.

Abstract: A final drive assembly for an agricultural tractor has a casing in which are journalled the outer end of a half-shaft and, parallel to the half-shaft, a final drive shaft. The two shafts are driveably interconnected by fixed ratio speed reduction gearing lubricated by mineral oil contained in the casing. A multi-disc brake can frictionally interconnect the half-shaft and the casing, and is operated via a linkage by a hydraulic slave cylinder housed within the casing and preferably actuated by mineral oil to avoid contaminating the lubricating oil in the event of any leakage from the cylinder.

Abstract: A combination power tool has a housing defining a bore with an annular bearing member mounted in the bore. A first clutch is rotatably mounted in the housing and a second clutch is rotatably mounted in the annular bearing member and movable relative to said first clutch between a first position whereat the second clutch firmly engages the first clutch and a second position whereat the second clutch is disengaged from the first clutch. A spring biases the second clutch into its second position. The annular bearing member is movably mounted in the bore for engaging the second clutch member to counteract the urging force of the spring and to displace the second clutch from the second position into the first position. A face cam formed on the annular bearing member and a cam follower is located on the housing for coacting with the face cam to guide the annular bearing member when the same is moved along the bore to bring the second clutch into its first position.

Abstract: A kit including an axle to be substituted for a fixed flanged axle from which kit axle the flange is omitted and which includes an outward axle extension providing spaced bearings on which a kit wheel hub is rotatably supported, the inner end of the hub providing an annular flange which performs the same function as the replaced fixed axle flange by accepting the bolts normally used for supporting the adjacent brake drum and wheel of the vehicle. Both inner and outer ends of the substitute axle are splined, the inner end fitting into the splined differential socket provided therefor in the differential, the outer end fitting into a conventional wheel clutching mechanism mounted on the outer end of the axle housing hub, the mechanism being operable manually to optionally lock the substitute axle to the wheel hub and wheel or to disengage the substitute axle to permit the hub and wheel to turn freely thereon.

Abstract: In the hub clutch disclosed, an external annular body coaxially encircles a drive member and is radially spaced from it. An annular clutch member, coaxial with the drive member and the body, is rigid in rotation with the body but is axially movable for selective engagement and disengagement with the drive member as regards rotation. An axially movable actuator for the clutch member is connected to and spaced coaxially from the clutch member by spring connecting means. An axially fixed cover has a rim coaxially encircling the body and has an end wall axially spaced from the body and the drive member, the cover being rotatable relative to the body. The end wall and the actuator have axially extending cam formations which cooperate to cause axial motion of the actuator upon rotation of the cover relative to the body, the actuator being urged towards the end wall by spring biasing means.

Abstract: A caging device for releasibly caging or clutching two relatively rotatable members to one another, such as a rotatable shaft to a fixed support or two independently rotatable shafts to one another, by axial movement of a clutch or caging member having a conically tapered clutch surface to and from a position of simultaneous engagement of its clutch surface with coaxial conically tapered clutch surfaces on the relatively rotatable members. The caging member can be electromechanically, hydraulically, pneumatically, or thermally actuated.

Abstract: Corresponding sets of radially distributed helical surfaces in a drive coupling for axially urging either of two female cone members into positive engagement with a male cone member and providing a selectively bidirectional rotary output.

Abstract: A disengage mechanism for a gear drive including rotatable drive and driven members with one of the members having first splines. A drive actuator having second splines and being connected to rotate with one of the members and axially movable with respect thereto between first and second positions. In the first position the first and second splines are engaged and the drive and driven members are connected to rotate together and in the second position the splines are disengaged and the drive and driven members are disconnected. First means are provided for moving the drive actuator to the first position and second means move the actuator to the second position. The first means include a spring which constantly urges the drive actuator to the first position and the second means comprises a rotatable cam member which positively engages the drive actuator to move it to the second position.

Abstract: The rotor of a disc brake apparatus for bicycles comprises a spider that flatwise overlies the outer face of one spoke flange on a wheel hub and is secured by spokes that have their hook portions extending through it and that spoke flange. A flat annular disc has radially inwardly projecting tabs that are secured to the spider and hold the disc in axially spaced relation to the spokes. A U-shaped caliper body straddles an edge portion of the disc. On a shorter leg the body has a fixed brake pad; on its longer leg it carries a movable brake pad that has a compound motion for self-energization. The body is movable in directions parallel to the wheel axis and is carried, in part, by a cup-shaped adapter coaxial to the wheel shaft and confined between a bearing cone for the wheel and an adjacent frame portion. Portions of the body straddle an elongated frame member to confine the body against rotation around the adapter.

Abstract: In a valve-actuating mechanism of the kind which is manually manipulated for actuating the valve-actuating member, the combination of a helical cam surface formed on a friction ring, a follower solid with the handwheel shaft and two confronting cylindrical surfaces carrying clutching dogs, a spring being inserted therebetween. Frictional forces are exploited for causing the axial displacement of the handwheel overcoming the spring bias.

Abstract: Corresponding sets of radially distributed helical surfaces in a cone clutch axially urge movable cone members selectively into engagement with either of two mating cone members thereby enabling a clutch output member or members to be driven in either rotary direction.

Abstract: Disk brake apparatus mounted on a differential gear shaft extending from each side wall of a transmission case. A cam plate and balls coact to press a brake disk mounted on the differential gear shaft against a friction surface. Each of the balls is in direct or indirect point-to-point contact with the outer side wall of the transmission case to reduce the sliding resistance involved.

Abstract: A reel mechanism includes a pinion engaged with a main toothed wheel that is rotated by a handle. The pinion is selectively engaged to a main rod for joint locking rotation thereof. A spool is fixed to the main rod. The reel mechanism further includes a clutch lever, a clutch cam, and a switching lever. The clutch lever is engaged with the pinion in such a manner that the pinion can rotate relative to the lever but both are locked together axially. The clutch cam is rotatably mounted to the housing and has cam surfaces which axially move the switching lever and the pinion when the cam rotates. The cam surfaces have a displacement larger than the height of that part of the pinion which engages the main rod.

Abstract: A brake assembly having a brake housing which has an annular member enclosing an annular gap of channel-like cross-section open at its radially exterior side is provided with at least one pair of segmental brake shoes. Annular actuating and thrust rings are disposed in the gap between the brake shoes and hydraulically actuated members are associated with the rings to move them against the brake shoes and press the brake shoes against the braking surface. The hydraulic actuating members may be a pair of hydraulic cylinders having pistons which move actuating rings associated with the brake shoes or a single piston acting against a projection from one actuating ring.

Abstract: An arrangement in a circular hosiery machine in which a motion drive device is provided between the needle cylinder and the dial. A program chain advances with each revolution, and a program drum advances intermittently with the action of the chain. A clutch couples and disengages two members of the drive between the cylinder and the dial, and a control of the clutch is made dependent on the program chain. The rotational motion of the dial is interrupted when the members thereof are not required, and an engagement is provided in at least one predetermined relative angular position.

Abstract: A transmission device includes a housing having a clutch assembly therein interposed in controlling relation between an input shaft and an output shaft. The clutch assembly, preferably a wet pack, includes a plurality of driver clutch elements splined to the input shaft, and a plurality of driven clutch elements connected with the output shaft. A non-rotatable axially shiftable force applying plate is operable for shifting a pressure plate axially along the input shaft to shift the clutch assembly into and out of driving relation with respect to the output shaft. A clutch actuator assembly includes a revolvable cam connected with the force applying plate for shifting the same axially of the output shaft. Springs normally urge the clutch actuator assembly and the force applying plate in a de-clutching direction, the spring pressure being absorbed substantially entirely by the input shaft.

Abstract: This invention concerns a power transmission gearing having friction devices i.e. clutches and/or brakes for holding and freeing parts of the gearing for changing the driving ratio, said devices having axially engageable friction surfaces which are urged in opposite directions by resilient means so that some engaging load can be applied or released and co-operating surfaces having a cam action are connected with the respective friction surfaces and so arranged that the torque load transmitted by the friction surfaces acts to produce an additional load in the axial direction which presses the friction surfaces together.

Abstract: A reaction type disc brake is provided with a mechanical actuator in the form of a helical thrust bearing whose nonrotatable cam component is part of or fixed relatively to the caliper. The rotatable cam component is housed in the caliper and is axially displaceable as well as rotatable therein. The rotatable cam component acts on the directly operated brake pad assembly via an axial thrust bearing and the reaction thrust is received directly by the caliper and applied to the indirectly operated brake pad assembly. The rotatable cam component is turned by means of a laterally flexible member which extends into the housing and which is placed under tension. The lateral flexibility accommodates the axial travel of the rotatable cam component. The helical thrust bearing comprises bearing needles disposed between helical cam tracks on the rotatable and nonrotatable components.

Abstract: In a spreading disc brake recesses for co-operation with balls located between pressure plates comprise straight grooves of progressively varying depth in inserts mounted in the pressure plates for angular movement about axes normal to the planes of the plates.

Abstract: A fully lined disk brake has a brake housing rotatably mounted on a wheel and segmented arcuate shaped brake shoes supported in the brake housing by a fixed mounting on the wheel assembly which extends over the radially outward open end of the housing to support the brake shoes and is movable from over the open end of the housing to permit access thereto for replacing the brake shoes without dismantling the brake actuating mechanism. The invention provides brake shoes having structure associated with the mounting to support the brake shoes and brake shoe actuating mechanism which automatically adjusts the brakes for optimum operation.

Abstract: A generally cylindrical supporting body rigid with a rotating drive shaft carries an axially slidable sleeve controlling the selective entrainment of a pair of flanking gears through respective clutches interposed between these gears and the body, each clutch comprising an annular pressure plate limitedly rotatable and axially slidable with reference to the body. Rollers journaled on radial pins along the periphery of the supporting body coact with respective cam tracks of the plate surfaces to urge either of these plates toward the adjoining gear, thereby engaging the interposed clutch, upon retardation of the plate with reference to the body by incipient contact of the corresponding clutch elements.