Abstract: A clearance control apparatus has a positioning mechanism for controlling clearance between rotor blade tips and a shroud segment of a gas turbine engine casing, and a rotatable lever for actuating the mechanism. The positioning mechanism is supported by a casing boss, coupled to the shroud segment, and actuatable for moving the shroud segment toward and away from the rotor blade tips to reach a position at which a desired clearance is established. The mechanism includes a shaft and a pair of cam elements. The shaft is mounted by the boss for radial movement toward and away from the rotor axis and coupled at its inner end to the shroud segment. An outer cam element is attached to the outer end of the shaft and spaced outwardly from the boss. An inner cam element is attached to an end of the lever mounted to the boss for rotational movement about a longitudinal axis of the shaft.

Abstract: A mechanical linkage characterizer for varying the movement of one output linkage with respect to an input from a linkage includes a generally box-like housing with a carriage mounted on tracks within the housing with a pivotally mounted output arm carried on the movable carriage and a pair of elongated variable contour stationary cams positioned adjacent the track for pivotally moving the output arm in response to movement of the carriage along the tracks.

Abstract: A lift-turn valve actuator is provided for tapered plug valve and slip assemblies that accomplishes vertical movement of the plug and retraction of the slips from sealing engagement with the valve body prior to rotation of the plug member 90.degree. to its open position. The valve actuator assembly includes inner fitting inner and outer sleeve members each having cam slots formed therein with the cam follower of a valve actuating stem being engaged with both cam slots. Rotation of the outer sleeve member with respect to the static inner sleeve imparts initial vertical movement to the actuator stem, valve stem and valve plug for slip retraction as an initial component of movement followed by simultaneous rotational and upward movement of the plug member until the plug member has rotated 90.degree. to its open position.

Abstract: An electronic water flow control device, which includes a mini-scale electrical generator which changes the mechanical energy from water flow into electrical energy for storage in a battery and for further use in driving a motor, by means of the control of a control circuit, to carry a piston rod to move forward or backward through the operation of a speed reducing gear set, so as to push a ball valve away from a water inlet for the passing therethrough of water flow or permit such a ball valve to block up the water inlet.

Abstract: A new compact linkage for translating rotary input force to amplified linear output force includes two force applying members which move apart relatively during operation of the linkage. A strut is pivotally attached at one end to each of the force applying members; the struts extend towards each other with a space between their free ends. Each strut has a bearing surface at its free end. A cam-roll member is interposed between the bearing surfaces of the struts and includes cam surfaces in contact with the bearing surfaces. When the cam-roll member is rotated by a lever attached thereto, it translates the rotary input force from the lever into linear output force by a rolling action of the cam-roll member against the bearing surfaces of the pivoted struts. The linkage is markedly more efficient in force translation and transmission than pivoting toggle linkages typical of the prior art.

Abstract: An improved characterizing linkage assembly of the type utilized to proportion the flow of fluids in response to motor controls, such as in the control of fuel and air mixtures in industrial combustion systems. The linkage system comprises a cam assembly having an adjustable curvilinear cam band, which is rotatable by a drive shaft. A biased follower rod, bearingly supported for reciprocal movement, is urged against the cam band. Movement of the follower rod pivots a linkage actuator arm which is bearingly supported on the drive shaft. Rotation of the drive shaft in response to a change in a selected process parameter imparts movement to the cam band, the follower rod and thus the linkage actuator arm being the proportional travel.

Abstract: This actuator comprises in combination an electric motor (1) capable of driving in rotation a screw (2) which shifts a nut (6) which positively drives a carriage (7) in the direction for rendering the latch operative and, through a spring (8), in the direction for rendering the latch inoperative, the carriage (7) driving an output lever (9) connected to the interior lever for rendering the latch inoperative; a pivotal cam (10) having cam surfaces along which is slidable a control stud (14) connected to the nut (6). This cam controls a connecting kinemative system (11, 12) connected to the interior lever for rendering the latch inoperative, on one hand, and to the exterior lever controlling the opening of the latch on the other hand, through means outside the case of the actuator. This anti-theft system permits unlocking the latch normally by means of a key from the anti-theft position in the event of a breakdown in the electric supply.

Abstract: Actuator for locking device of doors and trunks of automobiles comprising a rotating member that is rotated by a power source; a cam groove formed in the rotating member; a cam follower that moves along the cam groove;anda displacement member which moves between a first position and a second position as a result of the movement of the cam follower. If the cam follower should stop in a communicating groove, the disk can be rotated by a small motor or the cam follower can be operated normally under circumstances when the motor fails.

Abstract: A mechanical linkage characterizer for varying the movement of one output linkage with respect to an input from a linkage includes a generally box-like housing with a carriage mounted on tracks within the housing with a pivotally mounted output arm carried on the movable carriage and a pair of elongated variable contour stationary cams positioned adjacent the track for pivotally moving the output arm in response to movement of the carriage along the tracks.

Abstract: In a flaring tool for hollow, especially hollow-cylindrical, workpieces, a flaring punch is mounted for axial displacement in a tool body and can, by means of a cam on a hand level, be driven out of the tool body against a set of flaring dies fastened to the tool body. To solve the problem of being able to withdraw the flaring dies from the workpiece quickly enough to prevent the workpiece from quickly shrinking on the flaring dies, the flaring punch is coupled to the hand lever by an extractor whose point of engagement with the hand lever is excentric from the fulcrum axis. The extractor consists advantageously of at least one flat link which is journaled at one end on the hand lever and at the other end on the flaring punch.

Abstract: A fluid actuator having a piston, a pair of springs, a pair of cams, and a pair of cam followers mounted in a housing. A normally open valve is coupled to the actuator output shaft for actuation. When fluid pressure is applied to the piston, the springs are compressed, and the cam followers are moved down to permit the cams to rotate away from each other, thereby reducing the force on the actuator output shaft and permitting the valve to open. When fluid pressure is removed from the piston, the springs expand pushing the piston and the cam followers up, thereby rotating the cams toward each other and forcing the actuator output shaft against the valve stem to close the valve.

Abstract: A driving mechanism having a driving shaft, which is rotatable about a first axis and on which a pressure member is located. The pressure member has a first roller segment which engages a fixed support and a second roller segment which engages an adjustment member. The adjustment member can be coupled to a load displaceable parallel to a second axis. The driving mechanism is particularly suitable for comparatively small and accurate displacements of a load, such as, for example, a mask table in an opto-lithographic apparatus.

Abstract: A device for producing an axial displacement of two opposing relatively rotatable thrust members having a plurality of conical rolling elements installed between the thrust members which roll on angled ramps hus change the distance between the thrust members, at least one of the thrust washers having a conical face; and a loose outside flange designed as a closed, flexible ring circumscribing the rollers which absorbs the radial forces proceeding from the loaded conical rollers and exerts a binding effect on the conical rollers.

Abstract: A compressor bleed valve assembly 28 having an axially translatable valve ring 66 for a gas turbine engine 10 is disclosed. Various construction details which increase the sealing effectiveness of a valve ring 66 are developed. In one embodiment, the valve ring is adapted to engage a slot 56 as the valve ring is moved between the open to the closed position, the slot being contoured to provide a mechanical advantage as the valve ring moves to the closed position against resilient sealing members 58, 60 which axially engage the valve ring.

Abstract: An arrangement for opening and closing mold halves of a blow mold is disclosed. The blow mold generally forms part of a stretching and blowing machine for blow-molding hollow bodies from thermoplastic plastics materials.The mold halves are coupled to driven rocker arms, which are driven by driving rocker arms of a four-link gear, the pivot of the four-link gear being disposed immediately at the end of the common pivotal axis of the mold halves.The driving rocker arm of the four-link gear is formed by cylinders, which are provided with cam tracks on their external curved surfaces in which rollers mounted on a sliding cam controller travel.

Abstract: Rotary drive apparatus includes a plurality of driving elements connected by a cable to a single driven element, with the multiple drive elements spaced apart about the periphery of the driven elements for imparting rotary motion to the driven element in response to rotation of the driving elements.

Abstract: An improved characterizing linkage assembly of the type utilized to proportion the flow of fluids in response to motor controls, such as in the control of fuel and air mixtures in industrial combustion systems. The linkage system comprises a cam assembly having an adjustable curvilinear cam band, which is rotatable by a drive shaft. A biased follower rod is urged against the cam band, and upon movement thereby, pivots a linkage actuator arm which is bearingly supported on the drive shaft. Rotation of the drive shaft in response to a change in a selected process parameter imparts movement to the cam band, the follower rod and thus the linkage actuator arm in proportional travel.

Abstract: Rotary drive apparatus utilizes a cable extending about and between two rotatable members or elements, and the cable end terminations are secured to one of the elements by means of tension springs anchored within one of the elements. The tension springs provide two functions, one function is a pre-load bias on the cable and the second function is a tension force for withdrawing cable ends into the driven member in case of a break in the cable.

Abstract: A planting finger assembly having paired planting fingers is disclosed for use with a planter of the type wherein plants are removed from a nursery tray, preferably by the stem, and transported to a secondary growing location preferably in a field for harvest. Each planting finger assembly has a pair of planting finger shafts mounted in parallel. The finger shafts each terminate in radially extending wedged shaped gripping fingers for holding and releasing the plant. The two fingers on each plant finger assembly rotate on the finger shafts towards and away from one another responsive to oppositely disposed spiral cams and a joined pair of cam followers. Opposite rotation of the fingers moves the fingers from an opened position for receiving or discharging a plant to a closed position for gripping and transporting the plant.

Abstract: In combination with a plunger operated device such as a standard pushbutton limit switch (2), an auxiliary rotary actuator (4) having an operating arm (36) attached to a rotary cam(40) having a convex conical cam surface (40c) in contact with a complementary concave conical cam surface (42a) of a reciprocating linear motion cam follower (42), with the cone axes (40d, 42c) being in alignment and offset from the axis of rotation (40e) of the cam. A switch plunger (12) abutting shaft (38) is threaded in a bore (42b) in the cam follower (42) and has a smooth round shaft portion (38b) slidingly guided in a smooth bore (40b) in the cam to be adjustable up or down by a screwdriver slot (38c) in its upper end accessible when the actuating arm (36) mounting screw (46) is removed.

Abstract: A fluid-powered rotary actuator particularly well suited for use in operating an aircraft flight control surface. The body has a stationary body portion and a rotatable body portion with an elongated annular sleeve reciprocally and coaxially mounted within the body. A tie-rod coaxially projects through the sleeve from end-to-end between the stationary and rotatable body portions to maintain their relative longitudinal position against axial separation during actuator operation. To each axially outward side of the sleeve is an annular ball deflector. The axially outward portions of the sleeve and the corresponding portions of the stationary and rotatable body portions have helical ball races formed therein to transmit torque between the body portions and the sleeve to cause the rotatable body portion to rotate in response to fluid-powered linear reciprocation of the sleeve.

Abstract: A transmission steering column mounted shift arrangement has an actuator lever pivotally mounted on the steering column. The actuator lever has a cam track which cooperates with the manual shift control lever to pivot the actuating lever. The actuating lever also has an output arm to which a transmission shift cable is secured. The shift cable moves substantially linearly when the actuator lever is pivoted.

Abstract: A support stand for a camera or other optical device comprises a head portion supported by support legs comprising first and second telescopically related tube portions, the inner tube portion forming the upper part of the respective leg and the outer tube portion forming the lower part. A fixing device for locking the tube portions of each leg relative to each other comprises an actuating member, a connecting rod and a clamping arrangement connected to the actuating member by the connecting rod and comprising at least one clamping cone member and at least one pressure element. The actuating member is carried on the inner tube portion in the vicinity of the support head portion of the stand. Actuation of the actuating member causes the pressure element to be expanded by displacement of the cone member until the pressure element bears against the inside surface of the outer tube portion, thereby to secure it in position relative to the inner tube portion.

Abstract: A precision optical instrument includes an auxiliary focusing mechanism coupled to the primary focusing mechanism such that rotation of the auxiliary mechanism rotates the primary mechanism.

Abstract: A locking device is disclosed to prevent a rotatably journalled part of a portable tool from rotating. The locking device includes a blocking element which coacts with the rotatably journalled part for blocking the rotation thereof. The blocking element is disposed on the tool and can be shifted from a clear position permitting rotation into a blocking position preventing rotation. In the latter position, the blocking element is braced against the tool. Thus, the blocking element is always present on the tool and is available for use at any time. The blocking element does not need to be held manually in the blocking position because it is supported on the tool.

Abstract: An improved device for offering high speed transfer of articles between first, second and third stations. The device includes a pair of gripping devices each of which is movable along a first path with the first gripping device being operative to pick up an article at the first station and deposit it at the second station. The other gripping means is effective to grip the article at the second station and move it to the third station for release.

Abstract: A newspaper insert cart including a braking assembly which allows the cart to be stopped and rotated for convenient unloading of various sections. The braking assembly structure is specially designed for reliability, durability and a positive braking action. It also results in an overall system which is much less likely to cause injury to the cart user than systems heretofore known in the prior art.

Abstract: A constant airflow control apparatus is connected to an air duct of an air conditioning system to keep the flow rate of air fed from the air duct constant. The apparatus comprises a rectangular pressure receiving plate slidably mounted on a guide shaft extending in one direction inside a passage of a housing. The plate extends substantially at right angles to the central axis of the housing so as to block part of the cross section of the passage. The apparatus further comprises a coil spring for urging the plate against the flow of the air, and two swinging plates swingably attached to two opposite side edges of the pressure receiving plate, individually. The swinging plates are adapted to change the cross-section area of an air passage defined between the swinging plates and the inner surface of the housing in a mode represented by a quadratic curve in accordance with a rectilinear change of the pressure of the air.

Abstract: Escrow apparatus for coin operated equipment includes a pair of interleaved door panels disposed at an angular orientation with respect to each other and pivotally movable between a pair of fixed walls. The panels with the walls define a coin receiving escrow chamber or bucket. The door panels are selectively pivotable to allow coins disposed in the bucket to move either to a return path for returning the coins to a user of the apparatus, or to a coin box.

Abstract: An arrangement for lifting and lowering a window, especially of a motor vehicle by means of an entrainment member adjustable along a guide rail; the ends of cable sections extending approximately parallel to the guide rail are secured at the entrainment member by squeeze nipples whose longitudinal axes extend at an obtuse angle to the cable sections coordinated thereto.

Abstract: An adjustable pressure responsive switch assembly includes a unitary slide cam and button with projections extending outwardly from the slide cam. The support bracket mounted on the pressure switch includes an elongated slot having an enlarged opening at one end. The slide cam projections are adapted to be inserted in the enlarged opening and then be slidingly received in the elongated slot. The slide cam cannot be removed from the bracket unless it is moved all the way to one extreme so that the projections can be removed from the enlarged opening. This movement is prevented by stops formed as part of the cam.

Abstract: A wafer handler featuring a carriage movable along a rail path, the carriage supporting an upright rotatable arm with a cantilevered wafer chuck. Elevators for raising and lowering trays containing wafer stacks are disposed on either side of the rail path. Each elevator has a curved track section which may be interposed along the rail path. The upright arm has a track follower, parallel to a boom supporting the wafer chuck and freely movable along the rail path, except when it encounters a curved track section. In this instance, the track follower will follow the curved track section, causing rotation of the arm, boom and wafer chuck, bringing the chuck into the wafer stack at an elevation determined by the elevator. In this manner, motion in the X, Y and Z planes may be provided for stacked wafers over extended distances.

Abstract: A piston and cylinder actuator is connected to a cam for converting the uniform linear motion of a piston rod with respect to a power cylinder to rotate a shaft in a controlled acceleration and then deceleration for turning a driven member such as a workpiece over.

Abstract: A self-adjusting selector dial shift indicator mechanism is disclosed for an automatic transmission control system. The system includes a carriage assembly having a carrier member and an indicator member slidably interlocked by resilient biasing means for joint longitudinal movement on a support housing. A pair of stops on the housing limit the reciprocal travel of the indicator member at opposite end positions wherein its pointer is aligned respectively with the dial low-drive and park indicia. A first cable section connects the carrier member to the housing. A second cable section connects the carrier to the shift lever steering column tube. Movement of the shift lever from low-drive to park overcomes the biasing means allowing the carrier member to slip relative to the indicator member at each end of the dial automatically indexing its pointer wherein manual adjustment of the cable section is eliminated.

Abstract: Apparatus for lifting a load through an arc includes two pivotally connected, overlapping housings which are pivoted relative to each other by a fluid operated piston disposed between the housings. The housings have overlapping sides provided with oppositely inclined cam tracks. Rollers driven by the piston and captured within the cam tracks transmit force between the sidewalls of the housings, thereby causing the housings to pivot relative to each other. One of the housings is adapted to have the load mounted thereon.

Abstract: A ball type valve in which the ball is rotated by the cooperation of multiple tracks and multiple track followers.Also, a pressure operated permanent lock-out is disclosed. Pressure applied to a piston withdraws an expander from under a lock ring to release a lock-out sleeve. Continued application of pressure drives the sleeve to valve lock-open position where the sleeve is permanently locked to the housing.

Abstract: A gripper device for transporting and registering sheets of any type under the printing heads of silk screening and the like printing machines, which comprises a box-like supporting body having hingedly connected thereto, against the bias of preloaded spring members, a plate-like element forming a flat jaw, and juxtaposed thereto, a plurality of flat surface gripper elements which are set in mutual alignment and for oscillation about a parallel axis to said juxtaposed jaw and adapted to be brought close against said juxtaposed jaw by means of at least one slide element which is driven reciprocatingly by a drive shaft from the silk screen printer, said slide element being provided with an actuating means cooperating with means associated with said flat jaw and with said plurality of juxtaposed gripper elements and adapted to produce, as said slide is being reciprocated, a rotation of said plurality of gripper elements about their own axes toward said opposed flat jaw and to allow said flat jaw to be disengaged

Abstract: A brake control device suitable for applying a parking or emergency brake for a motor vehicle has a push-rod slidably engaged with a support and movable between an extreme position of rest, and an extreme braking position in which it applies a brake pad to a corresponding friction track formed on a braking member such as a brake disc. The push-rod is operated by a lever which is connected to the push-rod by a cam device mounted on the support.

Abstract: A control linkage has levers for actuating the throttle lever of a carburetor and a primer pump. A slide actuator has cam grooves engaging ends of the levers to actuate the levers in response to movement of the slide actuator. An adjustable linkage is provided on the end of the lever to allow adjustment of the linkage without the use of tools. The adjustable link has an adjustment arm formed integrally with the lever and ratchet teeth on the arm and lever engage to allow adjustment.

Abstract: An improved apparatus for the continuous and relatively labor-free fabrication of adobe bricks and the forcing of well casings into the earth. With regard to forming adobe bricks, a rotating table carries the bricks being processed from one station to the next and a novel means for applying unusually high forming pressures permits immediate forming and ejection of the bricks from the forms while at the same time producing adobe bricks of improved quality and hardness characteristics.

Abstract: Apparatus for applying force in one direction to an article and restraining movement of the article in the opposite direction. There is provided a reciprocally rotatable link and means to rotate the link connected to a first end of the link and a cam shaft having a first and second cylindrical portion, said first cylindrical portion having a different central axis of rotation than the second cylindrical portion. The first cylindrical portion of the cam shaft is secured to the end of the link opposite the end connected to the rotating means to provide rotational movement of the cam shaft when the link is rotated. A mounting block with a bore therethrough has the first cylindrical portion of the cam shaft passing through the bore. A rotating member pivotal at one end and movable from a first position to a second position has the second cylindrical portion of the cam shaft rotatably secured thereto at the end opposite from the pivotal end.

Abstract: A push button type or a pull out type door handle is provided with a latch operating mechanism for actuating a vehicle door latch. In each embodiment, a mounting member attached to the vehicle door rotatably mounts a latch release lever for movement in a plane generally parallel to the door. The push button or pull out handle moves an elongated rod having a helical twist through a camming opening of like cross-section in the latch release lever to rotate the lever and release the door latch.

Abstract: A lifting apparatus for lifting a load such as a motorcycle. The apparatus includes a base and a load support which may be placed under the load to be lifted. The base and load support each include vertical columns, one column being positioned in the other column so that the columns telescope to raise and lower the load support. A lever operable cam is secured to the base at a pivot having a horizontal axis and the cam surface is in contact with a cam follower secured to the load support. The lever pivots the cam so as to raise and lower the load support. The cam surface configuration keeps the load support in either the raised or lower position until the lever is operated.

Abstract: A holding mechanism for holding a workpiece in position during an operation being performed by an operating device (7) passing along the workpiece includes a toggle linkage (1, 2, 3), a projecting member (9) attached to the device, and a cam track (2) connected to one part of the toggle linkage, the arrangement being such that, towards the end of the pass of the device, after it has completed its operation on the workpiece, the projecting member (9) engages the cam track (2), further movement of the device causes the projecting member (9) to move the middle pivot (3) of toggle linkage to release it and, hence, release the workpiece as the device completes its pass. Preferably the toggle linkage is arranged as an over-center toggle linkage with its other component formed by a telescopic arm (1).

Abstract: This invention relates to the device for imposing a linear movement to the valve stem of the free-disc butterfly valves or the free-ball-plug valves in one direction before imposing a rotating movement to open the valve and another linear movement to the valve stem in the other direction after imposing another rotating movement to close the valve.

Abstract: A fastener slider holding device comprising a slider holder having a slider mount on the top and a pull tab receiving recess in one side thereof, a spring-loaded sliding member mounted in the slider holder for vertical movement, a slider holding lever having an engaging pawl at the upper end thereof for engaging the pull tab of a fastener slider, an operation rod for moving the sliding member vertically and cam means for moving the slider holding lever between the pull tab engaging and disengaging positions.

Abstract: A potentiometer drive for the displacement transducer of a reciprocating unit which uses a timing belt to drive the rotary potentiometer and where one belt pulley serves as a control disc to which the drive shaft of the rotary potentiometer is coupled in a direct rigid connection. The coupling connection is obtained by means of a coupling collet which clamps the end portion of the potentiometer drive shaft to a hollow hub of control disc and the latter to the inner races of two ball bearings. The potentiometer housing is blocked against rotation in a "floating" configuration, using a radial pin on the housing which engages a stationary retaining fork in such a way that only circumferential antirotation forces are transmittable to the potentiometer housing.

Abstract: Apparatus for breaking up stacks of boards in a power saw has a platform which carries a stack of boards and is movable upwardly by a motor which is automatically arrested in response to lifting of a preselected number of boards above a given level. The unit which effects the transfer of boards above such level onto a table which supports the boards during cutting carries a pivotable lever with an idler roller which rests on the topmost board during lifting of the platform, and the lever causes a switch or a signal comparing stage to arrest the motor for the platform when it assumes a preselected angular position. When the idler roller is moved off the topmost panel in response to transfer of the selected number of boards onto the table and resulting movement of the transfer unit relative to the platform, the lever assumes a given position in which it arrests the motor for the transfer unit.

Abstract: A radial infeed thread roll attachment comprising a pair of jaw elements each having a thread roll mounted at one end and a roller secured on the other end, a housing, pivotally mounting the jaw elements in opposed relation thereon, a cam assembly mounted on the housing and having an inner portion having a wedge-shaped cam element at one end and a threaded member at the other end and an outer portion, a spring for forcefully maintaining the rollers in engagement with the cam element for preventing the rotation of the inner portion when the outer portion is rotated whereby rotation of the outer portion will result in the axial displacement of the inner portion relative to the outer portion, the outer portion having an outer axially fixed element and an inner axially displaceable element threadedly related to the inner portion threaded member, the outer element having an axially extending keyway and the inner element having an axially extending key, a hydraulic cylinder with an air-on-oil hydraulic booster or o

Abstract: A twin lever control actuator (10) for operating push-pull cables (17) has two sets of two pulleys (12, 13), one set on each side of a control body (11). The cable cores (18) are attached to the pulley cables (15) on the straight run of pulley cable between the pulleys to provide linear actuation of the push-pull cables (17). A ball detent (52) or a friction pad (58) can be used to provide an adjustable control load.