Abstract: The selector rings (9-11) of a gearbox are moved axially of the mainshaft (8) to engage and disengage gears (1-6) by respective pairs of push-rods (15, 16) which extend inwardly between the gears (1-6). The push-rods (15, 16) bear on oppositely-inclined faces (22) of pairs of blocks (17) which slide in slots (18) parallel to the shaft (8) and which engage respective rings (9-11) at diametrically-opposite locations. Actuation of one pair of rods (15; 16) causes their blocks (17) and the engaged ring (9-11) to move in one direction whereas actuation of the other pair causes movement in the opposite direction. The rods (15, 16) slide within mounting blocks (19) inset between pairs of the gears (1-6), and are actuated by the cam surface (26) of a longitudinally-driven rack (25). Alternatively, the push-rods (47, 48 FIG. 8) are actuated by individual hydraulic rams (45, 46).

Abstract: A marine drive shift mechanism includes a shift ring (200) having a chamfer zone (204) along an arcuate portion of its outer circumference facilitating ease of shifting. A stepped camming surface (222) provides step function shifting movement. Neutral positioning notches (238, 240) are provided on the clutch sleeve (18) to improve clutch sleeve (18) placement when the shift mechanism is in neutral.

Abstract: A locking differential is provided for selectably locking a first axle to a second axle. The locking differential utilizes a dog clutch assembly characterized by two interlocking clutch members positioned between the differential side gears on opposing sides of the differential pinion shaft. The interlocking clutch members have face splines thereon for engaging corresponding face splines formed on the side gears. An actuating mechanism can be selectably activated to force the two interlocking members into engagement with the side gears.

Abstract: A device for affixing a shaft drive element to a loom warp beam shaft includes a clamping element having teeth, teeth at one end of the drive shaft and teeth on the drive element, and a displacement mechanism for sliding the clamping element and drive element on the drive shaft such that the clamping element teeth and the drive element teeth engage the drive shaft teeth. Upon sliding the drive and clamping elements over the drive shaft, the clamping and drive element teeth and the shaft teeth are mutually rotated to cause oppositely facing flanks on the drive and clamping element teeth to be pressed against corresponding flanks on the drive shaft teeth and thereby prevent relative rotation.

Abstract: A gripper device for a weaving loom having a drive shaft, which rotates in one direction of rotation and the other direction in an alternate manner, where the gripper device has a drive gear rotatably disposed on the drive shaft. This drive gear has a tooth system which is engageable to the tooth system of an assembly, which is non-rotatably disposed on said drive shaft. The gripper device also includes a mechanism for engaging both tooth systems to transmit the rotational movement of the drive shaft to the drive gear, thus moving and withdrawing the gripper device into and from a shed between warp threads.

Abstract: A hub locking mechanism for a wheeled vehicle is provided for selectively coupling and uncoupling driving and driven members. A clutch ring is in permanent engagement with one of the members and is axially moveable to engage the other member. Engagement of the clutch ring and the engageable member is enhanced by the provision of tandem rows of engaging formations on the clutch ring and the engageable member. The mechanism for affecting movement of the clutch ring has an improved one piece friction shoe for the moving cam and an improved cage enclosing the clutch ring and actuating spring.

Abstract: An apparatus for transferring power includes a shaft, a pair of pawls, and an outer member. The shaft has a first end which is connected to an electric motor and a second end which is operatively associated with the pawls. As the shaft turns, the pawls are forced outwardly against a non-circular interior surface of the outer member. As the pawls contact the inner surface of the outer member, they transfer rotational energy from the rotating shaft to the outer member, causing it to also rotate. When power to the electric motor is shut off, the shaft stops turning. The pawls are spring biased inwardly toward the shaft. When the shaft stops turning, the pawls move inwardly toward the shaft and are not connected any longer to the interior surface of the outer member. The outer member is free to spin freely even though the motor is stopped.

Abstract: A clutch mechanism (88) for a ground-driven top dresser (10) is actuated by an electric actuator (139) pivotally mounted to a U-shaped bracket (104). The shaft (141) of the actuator (139) is connected to flanges (135) radially extending from a rotatable tube (132) through a lost motion means in the form of elongated slots (145) formed in the flanges (135) and which slideably receive a pin (143) carried by the actuator shaft (141). A cam (134) is removably attached to flanges (133) radially extending from the rotatable tube (132) opposite to the actuator flanges (135). The cam (134) has first and second portions (136a,b) for engaging the pivotal arm (110) which engages and disengages the clutch mechanism (88).

Abstract: A heavy-duty open-center anti-friction bearing (1), especially for mounting on generator sheds in wind-powered electricity-generating plants. It comprises two races (2 and 3) with friction-reducing structures (4) rolling between them and with a brake that suppresses rotations on the part of the bearing. The brake consists of at least one braking surface (19) secured to one bearing ring (3) and of a brake lining (16) secured non-rotating to the other bearing ring (2) and forced against the braking surface by a pressure-application mechanism (21). The mechanism can be adjusted from the outside. The object is to free the bearing of normal forces deriving from the brake.

Abstract: A driven shaft is provided having a free end portion upon which a drive wheel is mounted for rotation relative to the driven shaft and for shifting longitudinally therealong between first and second positions. Drive structure is provided for drivingly connecting the driven shaft to the wheel when the wheel is in the first position thereof and which ineffective to maintain the drive connection between the shaft and the wheel when the wheel is in the second position thereof. Structure is provided for yieldingly biasing wheel the wheel toward the first position thereof and the wheel shaft include axially spaced abutment surfaces between which the narrow end of an elongated wedge is disposed, the elongated wedge being mounted from the shaft for longitudinal shifting of the wedge radially of the shaft.

Abstract: A shift apparatus for shifting a transfer case between a High-Range operating mode and a Low-Range operating mode. The shift apparatus includes a sector plate supported within the transfer case for rotation about an axis. A range pin member extends into a range slot formed in the sector plate. The range pin member is adapted to move a first shift fork in response to selective rotation of the sector plate between first and second positions corresponding to the High-Range operating mode and the Low-Range operating mode of the transfer case. The range slot has a first camming edge provided for moving the range pin and first shift fork toward the first position upon rotation of the sector plate in a first direction, and a second camming edge for moving the range pin and first shift fork toward the second position in response to rotation of the sector plate in a second direction.

Abstract: A one-piece casing (20) comprising a bottom (22) and a shell (24) formed with a cylindrical bore (26) houses a piston (30) for hydraulic actuation of a brake. For mechanical parking brake actuation, a shaft (34) is supported in the bottom (22) of the casing and a ramp arrangement (50) is rotatable by the shaft, thereby being displaceable axially away from a ramp arrangement (40) which is secured to the casing. Two strut members (60,64) which are screwed together constitute an adjustable strut between the axially adjustable ramp arrangement (50) and the piston (30). A return spring (90) is positioned under axial bias between a thrust bearing (92) secured to the casing and a thrust bearing (58) at one of the two strut members (60). The thrust bearing (92) which is secured to the casing is formed at an insert (84) by which one of the strut members (60) is guided non-rotatably.

Abstract: A clutch arrangement incorporates a rotating disk and a split ring adapted to be closed to establish peripheral contact with the rotating disk. A lever applies a closing force to the split ring as the split ring is rotated in a direction of rotation of the rotating disk, and an initiating member is provided in the form of an air cylinder, for making initial closure of the split ring and thereby starting rotation of the lever.

Abstract: The invention relates to a manually held dispenser for dispensing flowable material such as a mastic sealant from a cartridge, comprising a plunger for forcing material from the cartridge on actuation of an electric motor drive to move the plunger by a rack and pinion in a direction to dispense sealant from the cartridge. When it is desired to replace a spent cartridge, the pinion is disengaged fromt he rack and the plunger can then be withdrawn or retracted to a starting positon in a direction opposite to the one direction.

Abstract: Actuator for mechanically switching a mechanism (10) between at least two functional positions. The actuator comprises a rotationally symmetric inner rotatable member (23) rotatably journalled by means of an eccentrically located axle (25) and an outer rotatable member (24) journalled eccentrically about the inner rotatable member. It exhibits actuating members which, by changing position, influence the mechanism. The inner rotatable member and the outer rotatable member (24) are arranged to assume different angular positions, in part by turning of the inner rotatable member about its axle (25), thereby causing the outer rotatable member to turn, and in part by turning of the outer rotatable member (24) relative to the inner rotatable member, whereby the change of position of the actuating member is brought about.

Abstract: A shift assisting mechanism for a marine transmission including a pair of wire actuators that are connected by means of a pair of levers which are, in turn, connected by a motion transmitting mechanism that provides a lost motion so that excess movement of one of the wire transmitters will not place bending forces on the other of the levers.

Abstract: An improved S-cam (100) for expanding internal shoe (20) drum brakes (10) is provided. The working surfaces (116) of the S-cam are provided at their ends with an extremely high rise/low mechanical advantage portion (122) providing a warning ramp to indicate to the operator that brake relining is required and to minimize the possibility of cam flip.

Abstract: A sheet feed device for sequentially selecting and feeding sheets of paper from one or more trays or magazines mounted upon a printer and delivering them to the platen of the printer. The device includes one or more selector latch mechanisms, one associated with each tray, whose movement is controlled by the platen rotation and which, in turn, controls the rotation of sheet feed rollers associated with the trays, in response to a specific sequence of forward and reverse angular platen movements.

Abstract: A hub clutch in which when an axle shaft commences to be driven, protruding cam portions of a first cam which is axially movably splined to the outside circumference of a driving gear formed integrally with the axle shaft is displaced from the inside of respective grooved cam portions of a second cam and a cam ring to the outside along an axial direction. Thereafter, the first cam is further displaced to the outside in the axial direction along a second cam portion of the cam ring, and a clutch ring is displaced in the direction of clutched engagement through a shift spring, at which a casing is engaged integrally with the driving gear.

Abstract: A transmission includes a forward shift drum and an overlying and coaxial reverse shift drum. The drums are rotatable, but not longitudinally translatable with respect to each other. The drums each include lead grooves for guiding a shift fork pin therealong in portions of the grooves which overlap and intersect each other. When one of the lead grooves guides the shift fork pin into a gear position, the other lead groove serves as a stop, so that unintentional engagement of remaining gears with the drive shaft is prevented without the use of a separate special lock mechanism.

Abstract: A clutch mechanism for a fishing reel wherein the shaft supporting the spool is selectively engaged and disengaged from the drive mechanism through a clutch. The clutch also actuates a spring bias link having an opening therein that includes a stepped and elongated portion. A kick pawl pivotally affixed to the link is disposed to lie between the teeth of a ratchet which is driven by the handle of the fishing reel. Upon turning the handle, the kick pawl moves the link such that the projection moves into the elongated portion of the opening in the link, thereby allowing a spring that biases the clutch to engage the pinion gear with the spool shaft.

Abstract: A safety or overload clutch, particularly for thread-cutting chucks or quick-change inserts thereof, has a cylindrical clutch ring and a chuck body mounted coaxially inside the clutch ring, with a ball pocket clutch arranged between the inside surface of the clutch ring and the external surface of the chuck body. The ball pocket clutch provides for an adjustable releasing or disengagement of the torque, whereby one of the surfaces is provided with ball pockets of less depth than the diameter of the clutch balls, and the opposite surface is provided with counterpockets having release or disengagement openings, in which, in case of an overload, the clutch balls can escape against the effect of a spring-stressed axial pressure ring into a stable release position.

Abstract: A marine drive (10) is provided with a shift mechanism (200) including a detent canister assembly (202). A cylindrical canister (204) contains a ball (206) biased by a pair of concentric springs (208 and 210) into engagement with a shifter lever arm (124) to center the latter in a neutral position. The canister assembly (202) is a self-contained modular unit inserted into the marine drive housing (23). The cylindrical canister (204) has a left end wall (214) with an aperture (216) therethrough and has an open right end containing the ball (206). The first spring bears (208) at its right end against the ball (206) and extends axially leftwardly through the aperture (216) in the left end wall (214) of the canister (204) and bears at its left end against the housing (23). The second outer concentric spring (210) bears at its right end against the ball (206) and is entirely within the canister ( 204) and bears at its left end against the left end wall (214) of the canister (204).

Abstract: A valve actuator control system, although suitable for many control functions, is especially adapted for remote control of plug-type valves utilizes a unique configuration providing a unitary explosion-proof container to house all electrical components and also providing a manifold assembly that is adapted for either a hydraulic or pneumatic actuator motor with relatively minor modification. The manifold assembly is designed to accept all utilized control valves, relief valves, check valves, flow control devices, and manually operable override controls thereby simplifying installation and maintenance and reducing attendent costs. Three independent solenoid valves, responsive to mechanical feedback provided through the plug-valve's operating stem and integrated into the manifold within the explosion-proof container, provide for actuator motor control including a novel dual speed capability for enhancing plug-valve performance while precluding costly premature wear.

Abstract: The lock housing has a slot in a top wall via which a coded card key can be inserted to bring into alignment coded magnetic areas on the card with magnetically responsive elements of the lock to unlock the locking mechanism and enable rotation of either a knob or lever arm to open the door. The card moves a spring actuator against a coupling spline to engage it with a spindle spline carried by a shaft interconnected with the knob or lever arm handle. The sliding coupling spline is integral with parts which interrelate with the door lock mechanism such that rotation of the knob or lever arm will now effect release of the door locking mechanism. When the card is fully inserted, the mechanism is maintained in the unlocked condition and the card may be released to turn the knob or handle with the same hand. Spring-loaded members separate the coupling and spindle splines as the magnetic card key is withdrawn from the housing slot.

Abstract: A normally engaged wrap spring clutch includes a helical spring which normally is wrapped down on the outer surfaces of aligned input and output hubs to couple the latter. One end of the spring is anchored on the input hub and the other end is secured to a control collar which is telescoped over the spring so that, by turning the control collar relative to the input hub, the spring is unwrapped from the surfaces of the hubs to disengage the clutch. Pins project longitudinally into radial slots in the input hub and spiral slots in the control collar and have substantial mass so that, when the input hub reaches a preselected speed, the pins move radially outward under centrifugal force and, through a camming action in the spiral grooves, turn the control collar relative to the input hub thereby unwrapping the spring. In an alternative embodiment, the outwardly moving pins turn the control collar to cause the spring to wrap down and cause engagement of a normally disengaged clutch.

Abstract: A device for controlling in sequence or at the same time the feed of metal bars into a suitable guide equipment for supplying the bars to an automatic multi-spindle lathe is described.In order to connect the main control or drive to the bar feeding apparatus, the device includes a clutch, the coupling and decoupling of the clutch being caused by the rotation of the guide equipment. The portion of the clutch which is connected to the drive can rock around the axis of its support on the fixed frame during the coupling operation, and a return spring is provided to return rockable portion back to its starting position ready for the next coupling operation.

Abstract: A clutch for a power door lock includes an input gear wheel which is formed as a hollow cylindrical input gear wheel, a cam arranged in the input gear wheel and connected thereto, an output gear wheel with coupling drum, and a resilient coupling element controlled by the cam and adapted to be spread. The coupling element is provided with actuating projections. When the clutch is engaged, the actuating projections operatively contact the interior wall surface of the coupling drum. The input gear wheel is journaled on a driving sleeve at which is connected on the one hand a driving disc with driving pins adapted to engage in the coupling element and also a brake disc with an annular spring mounted thereon, to which annular spring is coordinated a stop. The coupling element is a unitary component having a substantially rectangular, elastically deformable frame which inherently is formed as a reset spring, and at two opposite sides of which are provided the actuating projections.

Abstract: A decoupling device for gear motors used in cargo conveyor belt systems in which a coupler member is free to move axially on the output shaft of the gear motor to cooperate with the final gear of the gear train in the motor housing. A spring member maintains the coupler in engagement with the final gear via the corresponding jaw structures. Disengagement of the respective jaw structures is accomplished by axially moving the coupler member along the output shaft by means of a self-securing pivotally mounted yoke which engages the coupler for transmitting axial motion thereto. The yoke is pivoted by means of a cam follower device mounted for pivotal movement exteriorly of the gear housing to thereby rotate to one of two positions, thus connecting or disconnecting the aforementioned respective jaw structures on the output shaft.

Abstract: A cone clutch sleeve (18) on a main shaft (15) is moved axially between forward and reverse counter-rotating gears (13 and 14) by a yoke (102) having mirror-image oppositely tapered cams (108 and 109) on opposite sides thereof which are selectively rotatable to engage eccentric rings (132 and 133) on the forward and reverse gears. This engagement drives the yoke away from the one engaged gear and toward the other gear to in turn drive the clutch sleeve out of engagement with the one gear such that torque applied through the cam-engaged gear ring assists clutch disengagement of the one gear such that requisite shift force decreases as speed and torque increases. The eccentric face surface of each ring actuates the yoke and drives the sleeve member out of engagement with the one gear and into engagement with the other gear with a pulsed impact hammer effect due to the eccentricity of the face surface as it rotates in a circumferential plane about the main shaft.

Abstract: Rotating and positioning tool for axially symmetrical workpieces, especially for steering tie rods in motor vehicles. A housing with a recess for the introduction of a workpiece accommodates a clamping mechanism with a crown gear that is positioned and driven at its circumference. An empty space inside the crown gear communicates with the outside through an access slot. The space is demarcated by a contour. Three tension rollers are accommodated inside the empty space in such a way that they can be displaced radially inwardly against the force of springs. The rollers roll along the contour. The distance of the contour from its axis of rotation continuously varies through alternating maxima and minima. As the crown gear rotates, the tension rollers are forced in from a starting position where the distance is maximal and securely clamp the workpiece, which is located at the axis of rotation.

Abstract: A freewheeling adapter for use on a vehicle such as a car or truck which is designed to be mounted on the existing wheel hub of the vehicle is disclosed. The adapter allows the vehicle to be converted to freewheeling thereby permitting the vehicle to easily be towed without damaging the drive train such as the automatic transmission of the vehicle. The adapter as designed eliminates the use of a wrecker truck in towing an automatic transmission vehicle by raising the drive wheels off of the ground during the towing process. The adapter may be designed having a lock-out feature which allows the adapter to be converted from freewheeling to non-freewheeling should it be desired to permanently mount the adapter on a vehicle.

Abstract: A clutch includes an inner clutch member of a cylindrical shape fixedly mounted on a shaft for rotation therewith, a bushing mounted on the inner clutch member, and an outer clutch member mounted on the bushing and driven for rotation at a predetermined speed, coupling elements carried by the bushing for coupling the inner and outer clutch members together, a first cam fixedly mounted on the shaft for rotation therewith, and a second cam pivotally mounted on the first cam and coupled to the bushing. An actuator initiates a revolution of the first cam, and it engages an acceleration section of a cam surface of the first cam at an initial portion of the revolution of the first cam to rotate it at a speed generally corresponding to a speed of rotation of the outer clutch member. The actuator engages a deceleration section of the cam surface at a final portion of the revolution to decelerate the speed of rotation of the first cam.

Abstract: An improved shifting mechanism for the outboard drive unit of a marine propulsion device. The unit includes a torsion bar actuator that resiliently deflects until a detent on the shifting sleeve is released. Upon release of the detent, the torsional loading on the torsion bar is released so as to slap the clutch elements into engagement.

Abstract: The disclosure relates to an apparatus for the disengagement of the line spool in relation to a transmission driven by a crank by means of a manually actuable operating member, and for automatic reengagement of the line spool and the transmission by means of the crank on rotation thereof for retrieval of the line on the line spool.

Abstract: The invention relates to mechanisms for uncoupling two rotating elements. The device includes a positive clutch sliding on a rotating drive element and subjected to the action of a return spring, an energy storage spring stronger than the return spring and designed to disengage the positive clutch, a cam connected to the drive element and designed to tension the energy storage spring, a pawl capable of keeping the energy storage spring tensioned, and an electromagnet intended to actuate uncoupling and connected to the pawl so as to release the energy storage spring. The device is applicable to temporary uncoupling of two coaxial rotating elements in particular in weaving looms, in order to uncouple the crankshaft from the loom and its main motor from the dobby shaft and its auxiliary control motor.

Abstract: A disc brake, particularly suitable for use in tractors and like vehicles, is disclosed. Balls are located in complementary inclined recesses in a pressure plate and in an adjacent end wall of the brake housing. The brake is actuated by radial movement of the pressure plate, which produces a camming effect as the balls tend to ride out of the recesses, so that the pressure plate moves axially to urge a rotatable friction disc into engagement with a surface of the housing. Pilot pins engage with lugs on the pressure plate, constraining it against angular movement, so that when on application of the brake the pressure plate engages the friction disc, the pressure plate is prevented from being carried round with the friction disc, ensuring that no servo effect takes place.

Abstract: A one-way clutch having a pawl member whose attitude is controlled in accordance with the direction of rotation of the input side of the clutch and which turns as the input side rotates in a given direction thus operating to change over between transmission and non-transmission of a driving force by controlling engagement and disengagement in accordance with the direction of rotation and the attitude of the pawl member. In application of this one-way clutch to winding and rewinding devices for cameras when one of a pair of one-way clutches is in the transmitting state by rotation of the motor in a given direction, the other one-way clutch is prevented from becoming engaged as a result of motion of the film.

Abstract: Disclosed is a clutch mechanism suitable for use in an electronic lock. The clutch mechanism requires minimal electronic current draw for operation by utilizing, in part, mechanical power applied to operate the lock to engage the clutch mechanism. A unique camming device in combination with a solenoid released interference shutter accomplishes the object of the invention.

Abstract: An adjustable frame 6 to 20 applied to a bed, supports selectively rotatable rolls 21, 22 at the level of the bed mattress 2 in parallel and close relation thereto. Said rolls are connected to an electric motor 66 via driving chains 40 around the underside of the bed. A draw sheet 28 extends between the rolls across the upper side of the bed and is wound on both rolls with the patient on the draw sheet. A control box 72 operating on low voltage (e.g. 24 V) current enables the patient or a nurse to turn on the electric motor to rotate in one direction or the other. Each roller is provided with an automatic driving and free wheel clutch 34 providing for driving of each roll only in one direction, namely the direction of reeling, so that when the one roll is being driven the other is freely rotating and vice versa. Furthermore, each driving and free wheel clutch unit 34 can be manually connected and disconnected by use of an external eccentric 48.

Abstract: In a disc brake, two cams on a single shaft simultaneously urge brake shoes into frictional contact with both sides of the disc.

Abstract: Because of the inverse relationship between spring actuating force generated by a compressed spring and the variable tangent angle of incidence between arcuate cam surfaces of opposed circular cam segments with cooperating cam followers, declining axial spring force, upon spring extension, is variably increased to a normal braking force of constant magnitude in a disc brake.

Abstract: A double-acting, floating, frictional coupling mechanism including an air-operated diaphragm-type piston with integral rack guided for axial movement in meshed engagement with a rotatably connected pinion. A cam on the pinion shaft cooperates with a second piston and intensifies the force transmitted through the rack and pinion by the air-operated piston.

Abstract: A shift actuator (10, 100, 200) for selectively shifting a shift member (12, 102) to one of at least two selectable operating positions is provided. The actuator includes a rotational member such as a cam (36) or scotch yoke flywheel (204) rotatably driven by a unidirectional rotational motor (26) to one of two or more selectable rotational positions, each of which rotational positions is effective to cause a single compression spring (56, 166) to urge an engagement member (64 and 66, 108) to axially move the shift member to one of the at least two selected positions.

Abstract: A clutch operating device in which an operating shaft is reciprocatingly rotated to operate a clutch operating member for setting and unsetting of a clutch. The clutch operating device has an operating shaft, and a cam mechanism disposed on the operating shaft. The cam mechanism is movable axially as the operating shaft rotates. A clutch release member controls setting and unsetting of the clutch, and a clutch lever connects operatively the cam mechanism to the clutch release member to actuate the clutch release member in response to axial forward movement of the cam mechanism. A return spring biases the cam mechanism backward through the clutch lever.

Abstract: An actuator ball movement coordinator and cam member for a torque responsive hub clutch of the ball and cam type serves to assure coordinated movement of a plurality of actuator balls and also cams the balls into positions which cause actuation of the clutch.

Abstract: A brake support assembly to be mounted on a vehicle axle housing for supporting a brake shoe assembly and an actuator therefor comprising a backing plate adapted to be fixedly mounted on a vehicle axle housing and two anchoring plates removably attached to the backing plate for pivotally supporting the brake assembly. Each anchoring plate includes projections which correspond to bores in the backing plate for positioning the anchoring plate at a predetermined position on the backing plate whereby the anchoring plate may be removed and replaced while maintaining a constant positioning of the brake assembly. In a first embodiment, the anchoring plate includes integral projections extending therefrom. In a second embodiment, the anchoring plate includes a tapered bore extending therethrough for supporting a pin. The pin extends from the plate defining the projection which corresponds with the bore in the backing plate.

Abstract: Shift control apparatus for a multiple speed, sliding gear manual transmission is characterized by the provision of a main shift rail which is rotatable for crossover selection and axially slidable for engagement of the selected speed ratio. An auxiliary shift rail is axially slidable for engagement of an auxiliary gear, and a reverse idler gear is axially slidable for engagement of a reverse gear. A single lever is provided for camming the auxiliary shift rail in its engaging direction upon axial sliding movement of the main shift rail in a first direction, and for camming the reverse idler gear in its engaging direction upon axial sliding movement of the main shift rail in the opposite direction. The camming arrangement locks the reverse idler gear as the auxiliary shift rail slides, and locks the auxiliary shift rail as the reverse idler gear slides.

Abstract: An improved clutch of the type having concentric and spaced apart driving and driven members with a clutch ring in engagement with one of the members and urgeable into a simultaneous engagement with the other member is provided. A fixed cam member is provided nonrotational with respect to the driving and driven members. A second cam member is slidably movable around the first cam member whenever the clutch ring is in simultaneous engagement with the driving and driven members. A cam follower is in a cammed engagement with the first cam member and is movable axially apart from the first cam member into cammed engagement with the second cam member. The cam follower further urges the clutch ring into a simultaneous engagement with the driving and driven member whenever the driving member rotates with respect to the driven member.

Abstract: A mechanical drive assembly includes driving and driven gear members with an internally splined coupling sleeve for engagement with said members. The sleeve includes a locking cam carried internally and being selectively actuable to move the sleeve between coupling-engaged and coupling-disengaged positions. The axis of rotation of the cam is offset from the central axis thereof whereby, when the cam is rotated through 180.degree. from the coupling-engaged position, the sleeve is moved forceably away from the driving member. Such movement of the sleeve is effected either by direct engagement of the cam face upon the driving gear member or by engagement of a cam follower on the driven gear member with a cam track.