Abstract: Apparatus for transferring an article is equipped with an arrangement for increasing or multiplying an output speed, wherein an original transfer move is produced by a linear extendable power cylinder unit and this basic linear move is made use of rolling a pinion, which is adapted to roll on a rack, and co-axially with the pinion, a pulley is provided with a diameter larger than that of the pinion, thereby in rotation the co-axial pulley being capable of rendering a larger peripheral speed, this larger peripheral speed is converted to a linear transfer move by belting arrangement so that the converted linear transfer move may be added to the basic linear move, thereby output speed is sum of the basic move and the converted move which was once transformed to rotation from the basic linear move. Magnitude of multiplication may be changed by change of a diametric enlarging ratio between the pinion and the co-axial pulley.

Abstract: A sample transfer device (10) for manipulating a sample (S) in a pair of sealed vacuum chambers (18, 102) comprises a tubular housing (12) made from a magnetically permeable material. The housing has one closed end (14) and another flanged open end (16) for attachment to the vacuum chamber. Located inside the housing is shaft (40) of a square cross section. One end of the shaft is rotatingly connected to an inner permanent magnet (66) which can rotate with respect to the shaft but moves axially together therewith. The other end of the shaft protrudes from the housing into the vacuum chamber (110). The shaft is supported inside the housing by a bevel gear (32) which rotates in a bearing (20) in the housing. The bevel gear (32) has a square opening (38) which guides the above-mentioned square shaft during its axial movements. The gear (32) engages another gear (98) which is attached to an output shaft of a rotary drive unit (80) having its drive element outside the housing.

Abstract: In the case of a wedge brake activating device for drum brakes of vehicles, the guidance of the rollers (13) contained in a roller cage (15)--which provide the positive [frictional] engagement between the wedge surfaces (12) and the slant surfaces (10)--located in the slots (9) of the push tappets (8) activating the brake shoes--is established exactly and with low friction at low manufacturing costs for the roller cage (15). In order to accomplish this, the rollers (13)--on the one hand--are guided tangentially between guidance surfaces (22) located on guidance protrusions (19, 20) of the roller cage (15) at their cylindrical circumferential surfaces (22), and they are guided axially--on the other hand--between axial guidance sections (24) located on the roller cage (15) and the sidewalls (11) of the slots (9), and the width of the expanding wedge (4) and the corresponding dimensions of the roller cage are in a determined way coordinated to the length of the rollers (13).

Abstract: An angular attachment to a rotary and percussive power machine, such as a hammer drill, includes a rotary power input tubular member driven by a rotary part of the power machine, a tubular power output supported for rotation at an angle relative to the axis of rotation of the power input member and including a holder for a rotary and percussive work tool. The tubular power input and output members are interconnected by an intermediate power transmission. A device for transmitting impacts from the percussive part of the power machine includes two guiding channels arranged in alignment with central bores of the tubular power input and output members and each enclosing at least one impact deviating element. The impact deviating elements are in sliding engagement with each other and with a corresponding coupling member arranged in respective contact bores of the power input and output members.

Abstract: The coupling between a driving element (belt 1a) and a driven element (arm 7) is provided by a finger (6) sliding in an oblong opening (5a, 5b) through a coupling part (2) in the driving element, said sliding taking place both along the long axis of the oblong opening and perpendicularly thereto, parallel to the long axis of the finger.

Abstract: The present invention relates to a continuously advancing machine for works on a railway track, comprising a main chassis mounted on bogies and provided with a mobile chassis supported working members such as ballast tamping and track lifting/shifting units. The chassis may move along the main chassis under the action of a chain driven by a motor so as to advance, during the works, step by step with respect to the track while the machine progresses continuously. The reactions of inertia are compensated by a mobile counterweight coupled to the chain so as to execute movements parallel to those of the mobile chassis but in opposite direction, the respective quantities of movement of the counterweight and of the mobile chassis including the working members being equal and opposite.

Abstract: Electric-powered, lever-amplified actuating means for valves and other devices which may be used to replace heretofore employed hydraulic jacks capable of transforming a small force traveling a great distance into a large force being motivated over a small distance, and where such amplifying ratios exceed 5 to 1; the mechanical amplifying means consisting of two upper ball bearings displaced radially down by a piston or diaphragm plate which in turn causes a cosinusoidal, small distance displacement of a lower pair of ball bearings; an electric motor turning a threaded spindle cooperating with a nut is made to move the piston or diaphragm plate.

Abstract: Feed bar advance and return driving apparatus for a transfer press. An upper slider is reciprocally vertically movable in the press crown in synchronization with the operation of the press, and a pinion rotatably mounted on the upper slider is rotated alternatingly in opposite directions with the upward and downward vertical movement of the upper slider. A drive rack vertically slidably supported on the upper slider is connected to the pinion at a position on the pinion which is eccentric to the axis of rotation of the pinion and is reciprocally vertically driven by the rotation of the pinion. The lower end of the drive rack extends downwardly and engages a drive pinion for rotating the drive pinion alternatingly in opposite directions during the reciprocal vertical motion of the drive rack.

Abstract: A Gunn diode oscillator tuning mechanism includes a waveguide wall formed with a cavity at the outside of the wall for accommodating a tuning mechanism. A tuning rod opening extends between the inside of the waveguide wall and the cavity to snugly accommodate a sapphire rod. A holder carries the fixed end of the sapphire rod and is slidable in the cavity. The holder is formed with a circumferential sectoral slot that engages an annular ring on the rotatable translatable shaft of a micrometer adjacent to the holder seated in a holding plate at the outside of the waveguide wall.

Abstract: The present invention provides a slide cylinder device having a frame with enhanced torsional rigidity and which can have an additional member interposed between the cylinder and the moving board without interfering with the moving board operation. The slide cylinder includes fixed pulleys, whose peripheries are partially exposed from an upper wall of the frame and movable pulleys. A flexible member is connected between the moving board, one of the movable pulleys, one of the fixed pulleys and a wall of the frame.

Abstract: The present invention provides in a stack mold comprising a center mold part, first and second outside mold parts moveable at both sides of the center mold part, a rack and pinion gear arrangement to move the outside mold parts. The rack and pinion gear arrangement comprises a plurality of pinion gears located at the center mold part and including a drive gear and first and second follower gears driven off the drive gear. Also provided are first and second free ended racks extending in opposite directions from the first and second outside mold parts respectively in engagement with the first and second follower gears. These follower gears reach above and below the drive gear and the first follower gear is offset to the side of the drive gear opposite that to which the free end of the first rack extends while the second follower gear is offset to the side of the drive gear opposite that to which the free end of the second rack extends.

Abstract: In a plotter (10) having a plurality of pens (14) stored in a rotatable turret (16) for selective use in a plotting operation, the turret may be rotated by the drive motor (32) used to move the paper (12) bidirectionally, thereby eliminating the cost and weight associated with a pen turret drive motor. The rotation of the turret is mechanically coupled to a grit wheel shaft (34), which is used to move the paper and which is driven by the paper drive motor. The turret is positioned on a spindle (86) provided with slots (88) associated with the location of the pens. The bottom of the spindle is provided with a worm gear (110), which is continuously engaged by a worm (94) mounted on one end of a worm shaft (96). The grit wheel shaft is also provided with a gear (104) which is selectively engageable by a sliding gear (102) mounted on the other end of the worm shaft. A lever engager (98) is actuated by a foot (106 ) on the bottom of the carriage assembly (56) which supports a pen during the plotting operation.

Abstract: A wedge brake arrangement for drum brakes on heavy road vehicles includes a brake cylinder push rod (29), plungers (26) axially movable perpendicularly to the push rod, and force transmitting rollers (32) between parallel wedge surfaces at the end of the push rod and on the respective plunger. In order to obtain full control over the reaction forces from the plungers (26) at brake operation the push rod (29) is guided by the housing (25) of the arrangement in the plane of the plungers by means of guide rollers (35) between plane surfaces at the end of the push rod (29) and in the housing (25), respectively, the surfaces being parallel with each other and with the axis of the push rod.

Abstract: Lever-amplified actuating means for valves and other devices which may be used to replace heretofore employed hydraulic jacks capable of transforming a small force traveling a great distance into a large force being motivated over a small distance, and where such amplifying ratios exceed 5 to 1; the mechanical amplifying means consisting of two upper ball bearings displaced radially down by a piston or diaphragm plate which in turn causes a co-sinusoidal, small-distance displacement of a lower pair of ball bearings.

Abstract: Apparatus for linearly adjusting the position of devices, and in particular, apparatus for adjusting focus of an image on a light sensitive surface of an image sensor device included in an optical character recognition read head. The apparatus includes a first mechanism for adjustably positioning a lens assembly for adjusting focus at the image plane, and a second device for adjustably supporting the image sensor device for adjusting the position of its light sensitive surface to coincide with the plane of the focused image.

Abstract: A mechanical limit sensing device or limit switch for piston and cylinder actuators has a housing in which a rocking lever is pivoted so that its one end is moved by part of the actuator to be controlled. The other end works a switching element. The housing is made in two parts, that is to say on the one hand a bush or bearing sleeve and on the other hand a gripping or clamping body for the bush. The bush may be turned in the body and may be clamped in it in a given position. The lever has a ball-like part with which it is mounted in a socket in the bush. The lever is furthermore guided in a slot in the body. This slot furthermore divides part of the body into two jaws that are used for clamping the body onto the bush. The switching element is screwed into a hole in the body that is in the same plane as the slot. There is furthermore a blind hole in this plane to take up a plunger for returning the lever after being actuated.

Abstract: A hydraulically powered lazy tong apparatus is provided for efficiently converting hydraulic power to rotational mechanical power. The apparatus may be employed independently or as part of another system that inherently requires the flow of hydraulic fluid. The apparatus comprises a pair of hydraulically powered piston and cylinder assemblies which are operatively connected to opposed ends of at least one lazy tong assembly. The lazy tong assembly preferably is connected by levers to a plurality of additional lazy tong assemblies. By this arrangement, the hydraulic power of the piston and cylinder assemblies is converted to linear mechanical movements, with the relative speed and power of that movement being determined in part by the dimensions of the lazy tong assemblies and the levers therebetween. The linear mechanical movement generated by the lazy tong assemblies is converted to rotational movement through a rack and pinion or chain apparatus.

Abstract: An apparatus for a moving conveyor feeder comprises an hydraulic actuator to alternatively move a shaft in opposite directions. Motion amplification is operationally coupled to the shaft to amplify the amount of motion thereof, and a conveyor feeder is operationally coupled to the motion amplification; whereby a small amount of linear movement imparted to the shaft by the hydraulic actuator results in a much larger linear movement by the conveyor feeder.

Abstract: An adjustment device is provided having a block with two longitudinal bores therethrough joined by a slot. A movable member, having a threaded hole therethrough, is slidingly disposed in one bore, and a movable ball and a fixed member, having a curvilinear surface, are disposed in the other. A set screw, having a conical point, is inserted through the slot and screwed through the movable member so that the conical point engages both the fixed member and the movable ball. Further movement of the set screw forces the cone point between the fixed and movable balls, thus causing the movable ball to move away from the fixed ball.

Abstract: This invention is characterized by that the high-frequency motor is adapted to provide the tapered surface engagements in both engaging parts between a draw bar set in a rotary shaft of the motor and a slit hook engaged with the draw bar, and between this hook and a holder for the hook, and to reverse mutually the inclined directions of these tapered surfaces so as to obtain a large clamp force.

Abstract: A wedge-type actuator for a drum type brake including a positive stop for limiting the degree of relative movement between the cage and the wedge for avoiding push through. The stop is operative between the cage and a member other than the wedge for limiting the forces exerted on the unit during its operation.

Abstract: A precision guided hammer or impact device includes a guide track on which is reciprocally mounted an impact member for movement between an impact position at one end of the guide member and a retracted position, and further includes a reciprocating manual input member which is connected by a multiplication linkage to the impact member for multiplying the input velocity for driving the impact member at a high velocity relative to the input velocity.

Abstract: A linear servo drive comprises substantially a drive section (29) and a ciage (30) running on the latter. The carriage (30) is seated on the drive section (29) via a roller bearing consisting of guide strips (36) extending in the axial direction and coacting with rollers (37, 37a to 37c).In order to increase the mechanical loading capacity of the drive section and, thus, of the entire drive and to reduce at the same time its weight, the drive section (29) is given a radial cross-section exhibiting flange-like end portions (34) extending in a star-like pattern from a central area (32) and provided with surface portions which extend in an approximately radial direction and which define the plane of the roller bearing.

Abstract: A braking unit for vehicles is disclosed which includes a housing in which slides a piston that can be displaced by means of a pressurized fluid to control, by means of an actuator, a thrust rod which controls a brake shoe. The actuator includes at least one pair of coaxial rollers supported so that they can revolve around a pin, supported by a pair of legs, which is connected to the piston and displaced in rolling contact with inclined surfaces of the thrust rod.

Abstract: The invention pertains to a control unit, especially for setting heating, oling and/or ventilation systems in motor vehicles. Sliding members are guided between two end positions in an oblong body. Setting members, e.g., louvers or motors, are adjusted by means of these sliding members via transmission means. A step-down unit is provided as the transmission means, which consists of a first toothed rack molded onto the sliding member and of a second toothed rack molded onto the body, and a gear which is mounted rotatably between the two toothed racks and moved when the sliding member is moved. The gear is connected to an adjusting means, e.g., a rod, which in turn operates the setting member.

Abstract: A vacuum transfer device includes a central processing chamber and a plurality of additional chambers radially positioned around the central chamber and in vacuum-tight connection therewith. A rotatable coulisse arrangement in the central chamber is extendable so as to reach into the additional chambers when correctly aligned. The device can transfer objects among several work stations without intermediate venting and re-evacuation of the system of chambers.

Abstract: In a key activated vehicle drum brake telescopically displaceable variable force transmitting elements have been arranged between the key and the brake shoes of the brake. In order to provide a design counteracting axial displacement of the brake shoes the variable force transmitting elements and the brake shoes have interengaging contact surfaces, the curve radius of the ends of the elements in a plane containing the drum axis are more than twice the curve radius of the same surfaces in planes perpendicular thereto.

Abstract: A linkage for controlling the removal of a workpiece from a press by controlling the timing between the workpiece support apparatus and the ram as it is raised and lowered. The linkage is connected to the ram in such a manner that the supporting apparatus has an adjustable dwell which can be adjusted by adjusting the length of both the linkage as well as a rod connected between the ram and the linkage.

Abstract: A power actuator on the base section of a multi-section telescoping crane boom can bridge at least one intermediate boom section to operate a biased locking pin retract mechanism employed in a system for remotely controlling the operation of a manual fly section of the telescoping boom. To enable the crane operator to know with certainty that the biased locking pin is in a fully engaged position, a visual indicator on the boom readily viewable from the crane operator's cab is directly mechanically linked to the biased locking pin and moves to the indicating position only when the locking pin is fully engaged.

Abstract: An ice cube storage bin located beneath an automatic ice maker of a domestic refrigerator contains a pair of elongated ice dispensing rams that reciprocate along parallel lines, one of the rams moving toward the front of the bin, as the other moves toward the rear. The rams are interconnected by a pulley mounted belt that pulls one ram to the rear of the bin, as the other ram is pushed toward the front of the bin by a drive mechanism. The drive mechanism includes a pair of cam discs eccentrically mounted in opposed relation on a common motor shaft located outside of the bin adjacent its rear wall. A pair of resilient lever arms, having their top ends pivotally mounted to the outside of the rear wall of the bin and their bottom ends pivotally connected to the rearward ends of the rams which extend from the interior of the bin, are engaged at their intermediate portions by the rotating cam discs wherein the rams are alternately pushed by the bottom ends of the lever arms toward the front of the bin.

Abstract: An installation for adjusting a safety belt hinge point in a vehicle with a slide member determining the hinge point and displaceable along a rail and with a detent mechanism selectively fixing the slide member at the rail 30 in at least two detent positions; the detent mechanism includes a detent element which engages in detent apertures of the rail and is prestressed by a spring into the detent position; the detent element and the actuating handle for the actuation of the detent element which is coupled with the detent element, are displaceable in different directions and are coupled with each other by a guide element 52 providing a step-down translation. An increased prestress force on the detent element with an actuating force for the handle that remains the same, is achieved thereby together with a mechanically simple construction.

Abstract: Disclosed is an automatic brake adjustment assembly (50) for maintaining a desired disengaged clearance (c) between a frictional brake lining (17) and a moveable object to be braked. Assembly (50) includes a cam member (2) that is moved in opposite axial directions upon the respective engagement and disengagement of the brake by the operator causing a cam follower (10) to move a nut (16) in corresponding opposite axial directions which in turn is threadingly engaged with and operates to move a piston (18) in opposite axial directions along a frame (24) and accordingly cause brake lining (17) to move towards and away from the object to be braked.

Abstract: A precision linear motion adjuster comprises a body with a primary motion member having a screw-threaded portion in threaded engagement therewith, the primary motion member having a thrust-imparting spigot coaxial with the threaded portion, an output member slidable in said body and an intermediate lever system located within the body for translating a relatively large movement of the primary motion member into a relatively small movement of the output member.

Abstract: An expansible mandrel for use in driving or withdrawing tubular piles has lengthwise sections which are subjected to expanding forces in a plurality of zones spaced lengthwise of the interior of the mandrel to establish their pile-gripping relationship. The pile-entering relationship of the sections is re-established by a series of transversely spaced pairs of assemblies spaced lengthwise of the mandrel with each pair between adjacent zones. Each assembly includes, in the disclosed embodiment, two coil springs each of which is confined in a tube. The tubes are spaced apart lengthwise of and are secured to one mandrel section. The proximate ends of the tubes back the springs.

Abstract: A device for mechanically transforming a torque into an axial force.A long, cylindrical rubber body (16) is enclosed within a tightly wound coil spring (15) and on its short sides by an axially fixed, torque-receiving end wall (12) and an axially movable, force-transmitting cover (17) respectively. One of the ends of the spring accompanies the end wall as it rotates, in so doing causing the diameters of the spring and the rubber body to reduce and the length of the body to increase.

Abstract: A boring head of a multiple-operation machine tool comprises a housing which accommodates a carriage carrying a mandrel for a cutting tool, and having a slanted surface to interact with a slanted surface of a rod arranged in the housing coaxially with the carriage and kinematically coupled to a drive which moves it in the axial direction. The housing also accommodates a fork arranged coaxially with the former and pressed against the carriage by a spring. At the ends of the fork are two slanted surfaces which are symmetrical with respect to the axis of rotation of the boring head. The fork interacts with the carriage on lines found in a plane extending through the axis of rotation of the boring head. The head further incorporates a rocker whose axle is installed in the housing on the side facing the two slanted surfaces of the carriage. The axle is parallel with the axis of rotation of the boring head.

Abstract: Diaphragm type control valve comprising an inert material coated and profiled diaphragm motivated against a shaped valve orifice by a mechanical amplifying mechanism following the command signal of an external controlling device and wherein the combination--profiled diaphragm and shaped valve orifice--is capable of forming an annular flow passage having a smooth entrance and a sharply expanding exit portion thereby reducing pressure recovery of the passing fluid to avoid cavitation.

Abstract: A gas bearing air slide assembly includes a slide ram movable within a relatively stationary housing. The slide ram and housing have a plurality of mated planar slide surfaces. Pressurized air is supplied between the mated slide surfaces of the slide ram and housing to create a hydrostatic bearing separating said mated surfaces and supporting the slide ram for longitudinal movement with respect to the housing. A counterbalance is provided on the slide ram for movement in direction opposite that of slide ram movement to compensate for slide ram axial displacement as it is extended from the housing. The housing is formed from a pair of identical housing halves joined along a joinder plane which passes through a central longitudinal axis of the slide ram. The slide surfaces of the ram and housing are mated by equalized lapping to a point of zero tolerance.

Abstract: A document reading device comprising a document stand having a document placing surface and an optical reading means for optically reading the surface of a document placed on the document placing surface. The device further comprises a guide member defining a guide passage extending in a direction toward and away from the document placing surface, an oscillating member mounted such that its one end can reciprocate freely along the document placing surface in a predetermined scanning direction and in a direction opposite to it and the other end can freely reciprocate along the guide passage, and a driving source for oscillating the oscillating member which is capable of moving said one end of the oscillating member at a substantially constant speed in the scanning direction. The optical reading means is provided in the oscillating member.

Abstract: The subject of the invention is an actuating device for a disc brake for motor vehicles or trailers having opposed brake jaws 5, 8 on both sides of a brake disc, which cooperates with a traction and a pressure rod, while between the traction rod 6 and the pressure rod 7 are arranged pairs of wedges consisting of outer wedges 10 and inner wedges 11. To provide this actuating device with a simply constructed and automatically acting resetting device for compensating for wear of the brake linings, there is provided an automatic resetting device between the inner wedges 11, consisting of a threaded bolt 17 with wedge pieces 18 lying between the inner wedges 11 and a reset lever, which is arranged with a movable collar 20 on the threaded bolt 17, cooperating with a stationary slide 21.

Abstract: A linear drive has a pneumatic or hydraulic actuator cylinder, whose piston rod is fixed in place and whose moving, axially guided cylinder forms a supporting and driving part of a stroke ratio changing transmission for transmitting the relative motion between the cylinder and its axial guide to a linearly moving drive output member. A useful effect is produced by having the output member (1) guided on the outside on a slotted tube, a driving spur of the member (1) running in the slot in the tube and being fixed to the stroke ratio changing transmission that is inside. The tube placed round the cylinder is used for axially guiding the cylinder. The stroke ratio changing transmission is for example in the form of two pulleys mounted on the cylinder and a cord trained over them, the cord being fixed to the member and joined to the tube by a mounting arrangement.

Abstract: A kitchen appliance for cutting fruit and vegetables in slices, with an upper rigid guide plate (2) carrying a cutting knife (5) extending at an acute angle (4) to the side wall, and with a lower tongue-like guide plate (3) which is adjusted vertically by an adjusting rod (20) guided in the frame (1) and extending approximately parallel to the cutting knife (5), and which is connected to the frame (1) via a film hinge (13).

Abstract: The present invention pertains to a continuously variable gear device for converting a rotary motion into a linear motion which is dependent on the angle of rotation. The gear device comprises a swivel arm which is rotatable about a fulcrum and is attached to a guide structure on the input and output sides, respectively, of the gear device. Each guide structure is provided with a sliding member to which strings are attached. The swivel arm has guide slots formed on either side of the fulcrum and each guide structure has a roller bearing which engages one of the slots. The mutual distance between the two guide structures is adjustable, by moving one of the guide structures along a positioning rail to vary the transmission ratio of the device.

Abstract: A device for locking a slidable member, including a U-shaped bracket having a central section and a pair of legs extending upwardly from each end of the central section, each of the legs having upper and lower apertures, a lockable sliding member slidably mounted in the lower apertures, and a threaded spindle rotatably mounted in the upper apertures. The spindle includes a large diameter portion and a small diameter portion, the small diameter portion having a central threaded section for threaded engagement with one of the upper apertures and unthreaded end portions, the large diameter portion having a knob at its exterior end. The device further includes a yoke mounted on the spindle adjacent the large diameter portion, the yoke having a pair of camming posts extending outwardly therefrom perpendicular to the axis of the threaded spindle, and a U-shaped cam follower member situated between the legs of the U-shaped bracket.

Abstract: A flat metal strip is placed horizontally on a base plate which is vertically movable between a ram and a bolster of a press. A bending die for bending the metal strip by applying pressure in the widthwise direction is fixed to a slide cam slidable horizontally on the base plate. The slide cam has a slide cam face abutting on a front cam face formed in a drive cam mounted on the bolster. When the ram is moved downwards, a cover plate fixed to the ram covers the metal strip, pushes the base plate and the slide cam downwards, and compels the slide cam to slide horizontally toward the metal strip with the aid of the front and slide cam faces to bend the metal strip with the bending die. On the other hand, the drive cam has a rear cam face abutting on a press cam face formed in a press cam fixed to the ram.

Abstract: A power transmission apparatus includes a housing to which input and output shafts are journalled. The input shaft is rotated by a motor or prime mover to thereby drive a cardioidal-shaped cam. The cam reciprocates a drive rod which has a first end slidably and pivotally connected to one end portion of a plural-section lever. The lever is pivoted to a lever supporting structure for oscillating movement, in response to reciprocations of the drive rod. The lever pivots about a fulcrum pivot axis which is fixed relative to the lever and positioned intermediate the ends of the lever. A first end portion of an output rod is slidably and pivotally connected to the other end portion of the lever. A drive speed adjustment mechanism is provided for shifting the lever supporting structure, and thereby the lever, relative to the input and output loads.

Abstract: A quick-acting clamping device for clamping tools or workpieces in machine tools comprises a piston which is slidable transversely to the clamping direction and which acts on a toggle mechanism which in turn moves a clamping piece. A pressure plate upon which the toggle mechanism acts is displaceable in the clamping direction in a housing which contains the transverse piston. The fluid under pressure which acts on the transverse piston to activate the toggle mechanism also acts directly on the pressure plate to assist in clamping. Because of the assisting force produced by the pressure plate it is possible for the transverse piston to move the members of the toggle mechanism from starting positions in which they lie at large angles to the clamping direction, that is with a big angular displacement from their dead-center position, in which they initially exert only a small force on the clamping piece.

Abstract: A wedge assembly particularly adapted for expanding brakes of motor vehicles including a housing and at least a pair of push rods movably supported in the housing and operatively connected to brake shoes of the brake, the push rods having confronting oppositely inclined faces comprising a wedge member having a pair of oppositely inclined wedge faces complementing the inclined faces of the push rods and at least a roller engaging between the inclined faces of said wedge member and push rods, and a cage for guiding said rollers slidingly movable in a longitudinal direction on said expansion wedge member, said cage having two flank portions extending parallel to the transverse direction having two free flank ends reciprocally directed in the transverse direction and provided with guide means for the rollers, each of said rollers having smooth axial end faces blending at their circumferential edge into a rolling face and said guide means being formed by two radial guide sections on each flank end of the roller ca

Abstract: An article handling device which is particularly well suited for loading articles into a reactor furnace for processing and subsequently unloading the processed articles. The article handling device is supported and vertically movable into alignment with the reactor furnace and includes an article moving device which is reciprocally vertically elevatable and reciprocally horizontally extensible for loading the articles into the reactor furnace and subsequent unloading thereof with minimal disturbing of the reactor process residue which is inherently deposited in the interior of the reactor furnace.

Abstract: A reciprocating linear drive for conveyors and like applications including a pair of cars mounted for translation on associated tracks. A reversible motor is coupled by a drive chain to the drive car for translating the drive car selectively in either direction through a defined drive stroke. An endless chain loop on the drive car is coupled by sprockets to revolve in one complete cycle during one stroke of the drive car. The conveyor car is coupled by a drag link to the chain loop to obtain uniform velocity of the conveyor car during an intermediate portion of the stroke and terminating in smooth cycloidal acceleration and deceleration at opposing ends of the drive stroke. In one embodiment, a pickup car is carried by the conveyor car and is selectively coupled by rack and pinion assemblies to the drive car for imparting continued motion of the drive car to the pickup car at ends of the stroke when the conveyor car is stationary.