Abstract: A hydraulic control arrangement with a feedback device for positioning an implement comprises a positioner including a fluid operated cylinder and piston unit, the piston of which is connected by a plurality of linkage elements to the implement. A first pump delivers through a pressure line fluid under pressure into the cylinder. A two-port three-position valve is interposed in the pressure line movable from a neutral position in which the fluid fed by the first pump is directed to a reservoir, to two operating positions to opposite sides of the neutral position, and in which one of the operating positions fluid fed by the first pump passes into the cylinder and in the other of the operating positions fluid from the cylinder can flow to the reservoir. A pair of pilot chambers are arranged at opposite ends of the valve for moving the latter from the neutral to either of the working positions. A second pump provides fluid under pressure for operating the valve.

Abstract: A booster utilizing fluid pressure which is provided with a power piston disposed between a constant-pressure chamber and a variable-pressure chamber for being actuated by the pressure difference between the two chambers, a control valve actuated by shifting operation of the input member for producing the pressure difference between the constant-pressure chamber and the variable-pressure chamber, a control member disposed, being in connection with the control valve, relatively movably to the power piston in the operation direction thereof, and a spring disposed between the control member and the power piston, whereby the elastic force variation of the spring, due to the relative shifting of the control member and the power piston while in operation, may be transferred by the control member to the control valve for regulating the operation of the control valve.

Abstract: An improved plastics moulding machine comprises an oil cylinder, an injection ram in said oil cylinder adapted to move forward and backward by the actuation of the hydraulic system, and a shafting consisting of a main driving shaft, a transmission shaft and a screw rod; wherein a fixed protection sleeve is provided between the main driving shaft and the injection ram for preventing the friction therebetween.

Abstract: An assembly comprising an inner and an outer cylindrical members, the inner member being displaceable within the outer member and provided with an annular recess, a locking ring being housed in the recess to allow displacement of the inner member in a first direction but locking the members relative one another upon attempt to displace the inner member in a second direction.

Abstract: A fluid pressure cylinder which utilizes a standardized housing, piston and piston rod for forming a cylinder assembly either with or without bumpers. The bumpers can optionally be positioned on the piston when desired, with the overall assembled length and maximum stroke of the cylinder being identical whether provided with or without bumpers. The piston is selectively mounted on the piston rod in one axial orientation if bumpers are not used, and the piston is reversed and mounted on the piston rod in the opposite axial orientation when bumpers are used.

Abstract: A hydraulic actuator, readily assemble and disassemble, which can be used for effecting actuation of food processing machinery or bulk bait or other commodity dispensers. Since it is necessary that such devices be safe and non-polluting, components which come in contact with the hydraulic fluid can be made of plastic so that tap water can be utilized as the hydraulic fluid.The actuator is made readily assemble and disassemble by including devices for quick and easy sealing and locking of the component parts. These devices have only a minimal number of subcomponents.

Abstract: The disclosure illustrates an insulated composite piston comprising a crown of ceramic or other heat resistant material secured to an aluminum piston body by a bolt of temperature resistant alloy. A low conductivity interface between the crown and the body is provided by a series of stacked discs having low effective thermal conductivity. The relative thermal expansion of the parts is compensated for by bellville washers on the bolt. The above arrangement insulates the crown from the piston body thereby minimizing the temperature gradient across the crown so that its temperature can be maintained as high as necessary to increase efficiency and minimize noxious emissions.

Abstract: The apparatus includes a mandrel, about which blank sheets are successively folded to obtain packaging sleeves. On one face the mandrel has a recess which extends in the length dimension of the mandrel and in which a first pressing shoe is arranged for reciprocation parallel to the mandrel length. A face of the first pressing shoe complements a mandrel face to a continuous folder face. A second pressing shoe cooperates with the first pressing shoe in pressing and bonding together overlapping edge zones of the blank folded about the mandrel. The first and the second pressing shoes are--as they press the overlapping edge zones--movable as a unit together with the packaging sleeve relative to the mandrel parallel to its length dimension. In this manner the packaging sleeve is stripped from the mandrel, while the adhesive between the overlapping edge zones sets as the stripping takes place.

Abstract: A temperature-control system for a vehicular passage compartment having a pair of sides is provided with a housing forming an elongated mixing chamber having a fresh-air inlet slot and a modified-air inlet slot each extending substantially the full length of the chamber which also has a pair of outlets each at a respective longitudinal end of the chamber. Fresh air is fed to the chamber through the fresh-air inlet slot and either heated or cooled air is fed to the chamber through the modified-air inlet slot. A conduit leads from each of the outlets to a respective side of the motor-vehicle compartment so that a mixture of temperature-modified and fresh air can be fed to the two sides of the passenger compartment. A deflector is longitudinally displaceable in the chamber along one of the inlet slots, normally the modified-air inlet slot, and partially blocks this one slot in any position therealong.

Abstract: An air intake vent (20) for the cowl opening (24) of an armored vehicle includes a front armor plate (26) extending upwardly from the cowl (22) forward of the opening and a holder (30) for mounting an air filter (32) over the cowl opening, and the vent also includes a flanged cover (34) that prevents projectiles from passing through the cowl opening while still permitting air to enter the vehicle. A front flange (36) of the cover extends downwardly in front of the front armor plate preferably with an inclined orientation so as to provide good deflection of projectiles away from the cowl opening. A pair of side armor plates (38) extend upwardly from the cowl on opposite lateral sides of the opening thereof and side flanges (44) on the cover extend downwardly outboard therefrom in a spaced relationship.

Abstract: Apparatus for peeling steam-, lye- or otherwise pretreated tuberous fruits, provided with a plurality of slightly interspaced, parallel, rotation-drivable rollers which are circumferentially provided with peeling elements, such as brushes or embossments, and which are arranged transversely to the main transport direction of the tuberous fruits, said rollers together forming the lower wall of a transport channel disposed at an angle or horizontally.

Abstract: A garbage collecting truck having two separate compartments, one to receive recyclable materials, such as paper, fabric and the like, and the other to receive the remainder mainly non-recyclable waste of the garbage. The two compartments are of elongated shape, are mounted side by side on the truck chassis longitudinally of the same and both are inclined upwardly towards the front of the truck. Both compartments can be loaded from the rear of the truck by persons standing on the ground, and each has a hydraulic ram to push the loaded material forwardly. The recyclable material in the one compartment is formed into successive bales, any two of which can be stacked on a platform located ahead of the elevated discharge outlet of said one compartment.

Abstract: A high-precision, metal-faced, calendar roll which can be readily reconditioned by thermal means. The calendar roll has a surface which is advantageously formed of that class of nickel-titanium alloys having thermally-responsive shape memory properties. The calendar roll is particularly useful in avoiding time consuming repair and undesirably prolonged runs in making high quality magnetic tape.

Abstract: Magnetically actuated impact equipment useful for high speed printers, punches or the like, is disclosed. Actuating magnets formed of materials characterized by wide hysteresis loops such as samarium-cobalt and mischmetal cobalt are disclosed. As disclosed, these magnets are oriented with like poles facing one another along opposite sides of gaps which run lengthwise of a print line. Magnetically actuated devices are shown with coils extending into the gaps with the plane of each coil being parallel to the print line. In one embodiment of the invention the magnets are arranged in upper and lower banks with coils on different movable devices extending upwardly and downwardly into gaps between the magnets in each bank. Another embodiment discloses coil-carrying devices which are mounted so as to be stepped along the gaps to various printing positions.

Abstract: A cantilevered takeoff apparatus is provided by the present invention which is particularly adapted to automatically remove printed stock from the bed of a screen printing press and transfer the stock to a wicket dryer, having a plurality of rows of wickets movable along the upper and lower surfaces of the dryer frame, where the stock is released face up on a row of wickets for drying. The cantilevered takeoff apparatus herein enables the wicket dryer to be positioned directly beneath the printed work to receive the work as it is transferred thereto, without obstructing the path of the rows of wickets during operation.

Abstract: Process and apparatus are disclosed for the printing of textile bands, such as sponge-cloths with contiguous ends connected to each other by transversal selvedges, on a flat-screen printing machine with an endless carrying belt and printing units, said process consisting:in arranging between two consecutive sponge-cloths a reference sign to be read by at least one sensor;in adjusting the advancing of the carrying belt to a repeat equal to the nominal length of the sponge-cloths, and by converting said advance to a number of electrical impulses to be sent to a programmer-computer;in arranging the printing units at a distance equal to two times said repeat, centering the sponge-cloth manually by conventional means;in positioning said sensor at a distance from the first printing unit, equal to at least one repeat; andin shifting said printing units proportionally to variations in lengths of each sponge-cloth, with respect to the nominal value, by interlocking said displacements with the programmer-computer, actu

Abstract: Ink duct for offset or relief printing machines having an ink metering device adjustable with respect to a doctor roller for varying a gap therebetween, includes an ink metering device having adjusting elements for varyingly adjusting the gap zonewise, the adjusting elements being formed with respective bracing and metering regions disposed adjacent one another in axial direction of the doctor roller, the adjusting elements at the respective bracing region thereof being continuously spring-biased into at least indirect contact with the doctor roller and, at the respective metering region thereof, being adjustable to a varying spacing thereof from the doctor roller so that the respective spacing of the respective metering region from the doctor roller determines the ink gap in a respective zone.

Abstract: Sheet carrier device disposed so as to be axially and radially adjustable on a transfer drum in a multicolor rotary printing machine and having axially shiftable carriers extending in circumferential direction on the casing of the drum, sheet carrier elements being interchangeably mounted on the carriers and displaceable in circumferential direction of the drum, the sheet carrier elements having supporting edges whereon a sheet being carried is supported when the carrier elements are in operating position.

Abstract: There is disclosed a missile which automatically disintegrates after a predetermined flight time. The missile is made up of several parts which are positively secured together by a locking means which is released at a predetermined time after the firing of the missile by the action of the air through which the missile passes during its flight. The invention may by used to advantage in both practice missiles and service missiles.

Abstract: An obturator for a projectile to be fired from a rifled barrel is provided in accordance with this invention, with this obturator being mounted on the projectile in such a way as to permit rotational slippage. A preferred form of our obturator comprises a ring of non-metalic material, which ring is capable of being mounted on a circular body portion of the projectile. An external portion of the obturator ring has a plurality of encircling slots, essentially parallel to each other, which slots are rearwardly inclined so as to define a plurality of chevron-like members designed to forcibly engage the rifling of the barrel. The interior of the obturator ring is designed to slip rotationally with respect to the projectile body portion as the projectile travels along the barrel, thereby advantageously minimizing the rotation of the projectile as a result of rifling effects.

Abstract: An antitank weapon system is shown to include a projectile carrying at least one pulsed laser radar which periodically illuminates swaths of the underlying terrain, means for processing return signals to distinguish between the radar signatures of objects on such terrain and means for firing submunitions to impact on any object whose radar signature corresponds to that of a tank or other desired target.

Abstract: The provision of a delayed arming fuze utilizing a ball rotor, and a firing pin which is captured to the ball rotor by an unwinding ribbon, and which pin precludes the rotor from swinging into alignment for arming until the ribbon has unwound under the sequential presence of setback and spin forces.

Abstract: A percussion type projectile nose fuse includes a generally conical fuse body having a cavity open only to the base thereof. Disposed within the cavity is a firing pin, a sleeve and a ball igniter. A fuse tip portion is defined by a weakened region, open to the fuse body exterior surface, which ruptures upon tip impact with a target, thereby causing at least partial rearward penetration of the tip into the cavity. Upon such tip penetration, the tip severs a flange on the firing pin by driving it against the sleeve, and propells the firing pin rearwardly along the sleeve and into engagement with the ball igniter. By forming the sleeve substantially longer than the length of the firing pin, a time delay before ignition, equal to the firing pin transit time, is provided. A forward opening recess formed in the apex of the tip, with a thin deformable wall thereabout, provides shock absorption so that accidental rupture of the weakened region does not occur during normal handling and loading of the projectile.

Abstract: A carrier conveyor comprising a main runway and a secondary runway each including a chain to which are secured stationary lugs for continuously driving carriers on a runway. A first auxiliary way includes a chain which is arranged to be moved in synchronism with the main chain and has lugs for driving carriers from a waiting position of the secondary way to the main way. Each retractable lug is returned by a spring to an engaged position for driving a carrier. A second auxiliary runway includes a chain which is arranged to be moved in synchronism with the main chain and has lugs for driving carriers from the main way to a stop position of the second auxiliary runway upstream of the secondary runway. A first electromechanical transfer device transfers a carrier from the waiting position onto the first auxiliary runway by an engaged lug of the first auxiliary chain. Movable means disengages selectively the retractable lugs of the first auxiliary chain from the carrier path when no carrier is to be transferred.

Abstract: In a railway car truck a transom is provided comprising a pair of tubes rigidly connected respectively to a pair of longitudinally extending side frames. The tubes are longitudinally and vertically aligned and are located below a bolster which extends between the side frames above the transom. A bearing rigidly attached to one of the tubes extends within the other of the tubes. The external surface of the bearing is provided with low friction material to allow the side frames to rock in respective vertical planes about a transverse axis as ups and downs in the track are transversed. However, the transom resists the tendency for the side frames to move longitudinally with respect to each other, and thus maintains the truck in tram.

Abstract: A rectangular body portion is hinged along its end edge by first hinges to the bottom of a pull-out table end leaf and is movable from a position parallel with the leaf to a position normal to the leaf. A pair of U-shaped support legs which serve as slides for connecting the end leaf to an extension table are hinged to opposite side edges of the body portion and are separately pivotal from a common plane parallel with the body portion to positions at acute angles with the body portion and have latches thereon for interlocking engagement with latch plates to hold the U-shaped support legs in position to support the table leaf as a separate assembly. A portion of the top of the table end leaf is hinged to pivot upward and be locked in the raised position by a bracket to form the back of a child's bench.

Abstract: The specification describes a stepping advancing device more particularly r tables for receiving components during a stage of manufacture. The device comprises a crank drive adapted to reciprocate through 180.degree. and attached to the table. A pitman of the crank drive is pivotally connected at its free end remote from the crank shaft with an anchoring or fixing element guided for movement in the direction of movement of the table. This element is clamped to and freed from its guide at the respective end of movement of the crank drive. Furthermore there is a second fixing element, directly fixed to the table and which at the end of travel of the crank drive is detached from and clamped to a further guide, running in the direction of travel of the table, so as to perform an opposite movement to the first-mentioned fixing element.

Abstract: A basically metal frame coffee table or stacked shelves or the like employing a plurality of tubes of circular, square or other regular shape joining at intersections by an improved corner member. The improved corner member is preferably die cast in a single piece including a pair of arms which define connectors for two adjoining tubes and an orthogonal opening to receive a leg. The corner member includes an integral support for holding a shelf. The integral support conceals a fastening member employed to hold the leg in place. Each of the arms define at least one recess at a predetermined distance outward from the corner and located in intimate contact relationship with the frame tubing whereby the tubes may be assembled to the corners merely by staking the underside of the frame to deform the tube locally into the recess of the corner member and thereby produce a fixed permanent frame.

Abstract: A free-standing shelf support of prefabricated components particularly suited for convenient store or supermarket displays is disclosed. The unit includes two sections each comprising a pair of vertically-disposed uprights mounting therebetween a panel assembly having grooved vertical edges with clips at their upper ends designed to cooperate with slotted tongue protrusions on the uprights to cause the panel assembly to be secured to the uprights simply by being slid downwardly into engagement therewith during assembly. Each upright has a base member which extends laterally from its lower end, and a lower shelf spans across the top of the base members and cooperates with a kickplate extending across the ends of the base members to tie together the lower end of the unit. The uprights are provided with a series of vertically-spaced holes designed to accommodate vertically adjustable shelf supports.

Abstract: A merchandise display table which allows a plurality of customers to simultaneously select and view a plurality of eyeglass frames has a pedestal, a multi-sided mirror vertically mounted atop the pedestal, an annular table member disposed about the pedestal including an annular track, and an annular compartmented display tray disposed within the annular track and arranged for rotation about the annular table member. The periphery of the table member has a plurality of customer seating stations, each station facing one side of the multi-sided mirror.

Abstract: A combustion system for particulate wood waste, coal, peat and other combustible materials is disclosed. The system comprises means for feeding combustion material into the combustion chamber of a furnace and means for recirculating a portion of the exhaust gases from the furnace back into the combustion chamber for increasing the temperature of the combustion chamber and so improve the thermal efficiency of the furnace.

Abstract: The electronic patterning system of a sewing machine comprises a main pattern memory consisting of a large number of individually addressable storage locations. Instead of each storage location storing only the stitch-control data for one stitch of one pattern, one section of each of at least some of the storage locations stores stitch-control data pertaining to one stitch of one pattern but with another section of the same storage location storing stitch-control data pertaining to a different stitch, e.g., a stitch of a completely different pattern. Thus, it may be that for some stored patterns one section of each storage location used for a pattern stores needle-bar position commands with the other section of each such storage location storing cloth-feed commands.

Abstract: An arrangement for obtaining pattern feed elongation in an electronically controlled sewing machine by utilizing a potentiometer for feed length variation, which potentiometer at a certain point switches in a feed multiplication and reduces its effectiveness so as to obtain a uniform change in feed from 0 to the maximum multiplication desired. Two embodiments are disclosed, one of which utilizes a comparator to eliminate a switch.

Abstract: A support structure is provided for a sewing machine needle. The structure includes a simplified needle bar 14 having a solid end 34 with a transverse, threaded hole 36. A die cast needle clamp 11 is precision-formed with a hollow cylinder 13 that fits over the end of the bar and is attached by a screw 16. A needle channel 19 is cast in the clamp to hold the shank 22 of a needle with the flat surface of the shank against a flat surface 21 of the channel and the round part of the shank captured between another flat surface 32 and the conical end of a screw 23. The cross section of the channel 19 is large enough to receive standard needles but not so large as to receive the shank of the smallest standard needle improperly oriented.

Abstract: For a zigzag sewing machine having a buttonhole presser device allowing formation of a buttonhole in a single step, a method for insuring that the presser device is in its initiating position by determining where the movable portion of the presser device is and, if it is not in its correct position, to adjust feeding action required to move it to its correct position.

Abstract: An anchor guide comprises an elongated tube which is slidable axially inside a collar hinged to a bracket attached to a boat deck. A boat anchor is secured to an anchor line which passes through the tube and over a roller located inside the tube immediately above the hinge axis of the collar. The anchor is retrieved by pulling on the anchor line to pull the shank of the anchor into the tube until the body of the anchor strikes the bottom of the tube, after which continued tension on the anchor line pivots the collar about the hinge axis to lift the tube and the anchor, while causing the tube and anchor to slide through the collar toward the boat deck, reducing the amount of force required to lift the anchor.

Abstract: A hook assembly for retrieving the chain bridle component of a broken marine barge towing line. The assembly comprises a sinking hook dimensioned to receive the bridle, a float connected to the hook for maintaining it a predetermined distance below the surface of the water, and a hook towing line connected to the hook for deploying it into position for intercepting and engaging the bridle. Hook positioning means locates the hook in bridle-engaging position.

Abstract: A propeller with no shaft boss comprising a substantially cylindrical rotatable member and several propeller blades extending radially of the cylindrical member close to the center axis thereof, and a ship thruster system adapted with the propeller having its cylindrical member disposed in a suction and exhaust port formed in the hull, and the cylindrical member is arranged to receive the rotative force from a motor so as to be rotated.

Abstract: A displaying measuring instrument with combined digital and analog display. The lowest order digit of the measuring value to be displayed is indicated by means of a linear scale made up of scale marks, the mark corresponding to the instantaneous value of the measuring value differing in appearance from the surrounding, thus indicating the instantaneous value of the lowest order digit. The higher order digits of the measuring value are displayed by conventional numeral indicators located at the lower end of the linear scale. Thus, the higher order digits are displayed strictly digitally, whereas the lowest order digit is displayed both digitally (by the particular scale mark concerned) and analogously (by the location along the scale of that particular scale mark).

Abstract: Apparatus and method for rebuilding the internal surface of a cylindrical object, including a mandrel for supporting the object for rotation about its longitudinal axis, and a wire-fed welding torch positionable adjacent to the interior surface of the object. The welding torch is movable axially with respect to the object during the rotation thereof, so as to deposit material about the interior of the object.

Abstract: One shot coating of powdered material with a metal film is achieved by allowing the material to fall through a vertical refractory cylinder, the inside of which is covered with the metal. The process takes place in a vacuum chamber and the cylinder is heated to evaporate the metal onto the falling material as it passes through the cylinder.

Abstract: The present invention provides a storage container which is convertible into a bird nesting box, the container preferably having a snap-on lid or cover and being commonly available as a disposable receptacle for the packaging of consumable powders, granular materials or other food stuffs such as instant soft drinks, coffee, and the like. The container and the snap-on cover are provided with prestressed portions which can be readily removed, a measuring cup such as typically provided within such a container also having a pre-stressed portion thereof which can be removed to form a cylindrical sleeve-like member open at both ends. The measuring cup is further provided with spaced flanges or threads on the exterior surface thereof which can be fitted within the aperture formed on removal of the prestressed portion on the snap-on cover to hold the cup therein, the container forming a suitable nesting box on placement of the cover and cup assembly on the open end thereof.

Abstract: A container of the tubular side wall type has a bottom closure member and a top closure member. The side wall has a break line around a portion of the circumference thereof with an accurate scoreline extending between the opposite ends of the break line. When the container is to be used as a feeder, the break line is broken and a panel portion, defined by and between the score-line and the break line, is pushed inwardly to assume a concave shape. The panel portion is self-biased to the concave shape. A perch is provided such that when it is desired to use the container as a feeder, the perch can be inserted through the side wall so that a portion of the perch extends outwardly from the feeder at a position adjacent a feeding opening formed by pushing the panel portion inwardly. A hanger is provided to cooperate with an upper portion of the container for suspending the container in spaced relation to the ground.

Abstract: An animal feeding device in which the animal actuates the transfer of the feed from a sheltered feed storage hopper to a feeding station by working a lever or similar device. The feed hopper is positioned above the feeding station, whereby the feed will transfer by gravity therebetween. A rotatable cylinder having pockets therein is positioned between the storage hopper and the feeding station so as to block gravity flow of the feed. A rod is fixedly attached to the rotatable cylinder and extends outwardly into the feeding station, such that the animal may swing the rod from side to side thereby rotating the cylinder back and forth. The rotation of the cylinder alternatively causes the pockets therein to fill with feed and to empty into the feeding station. A dampening mechanism is provided which senses accumulation of feed in the feeding station and resists additional demand of feed by the animal.

Abstract: PCT No. PCT/FR78/00010 Sec. 371 Date Mar. 13, 1979 Sec. 102(e) Mar. 13, 1979, PCT Filed July 18, 1978, PCT Pub. No. WO79/00056 PCT Pub. Date Feb. 8, 1979. Independent vaporization installation for transforming cryogenic fluids from the liquid to the gaseous state by heating the fluids while circulating them in a tube bundle immersed within the interior of a container.In an installation comprising a heat generator, a container, a water heating circuit for the water of the container, an exchanger comprising one or several coils immersed in the container and regulation and control means, the invention resides in the fact that the heating water is constantly recycled by means of diffusion racks 54 and aspiration racks 56. The diffusion racks 54 comprise at least four perforated pipes occupying the upper portion of the container 13. The aspiration racks 56 comprise two perforated pipes sutuated near the base of the container and connected to the pumps 16 which direct water back to the generator.

Abstract: Connecting arrangement for a heating boiler, in whose water-bearing sheet-steel housing is arranged an installation casting consisting of a combustion chamber and fuel-gas ducts.For having a good and simple connection between the sheet-steel housing and the installation casting the improvement consists in that the front and rear wall of the sheet-steel housing are provided with an access opening and the opening edges are bent in the form of a collar, the inside diameter of the collar being rather smaller than the outside diameter of the seating faces of the installation casting and the front and rear wall being connected to the seating faces by a press fit.

Abstract: A system of production and distribution of condensable vapor in a close circuit, at approximately constant pressure and temperature serving two systems of stations utilizing vapor at respectively high pressure and low pressure, comprising a transfer lock arrangement, for transferring condensates from a low-pressure condensate reserve to a high-pressure condensate reserve, wherein the low-pressure condensate return line and the drain conduit connecting the two condensate reserves are respectively provided with two motor-actuated stop valves and whose servo-motors are respectively connected to the monitoring member of the level controller of the low-pressure condensate reserve.

Abstract: This disclosure relates to apparatus for steam generation or boilers and more specifically, discloses a system for controlling the fluid level in a boiler drum. Drum level control requires an observation of the fluid level in the drum and also takes into account steam flow out of the drum and feedwater flow into the drum. The present invention improves upon the prior art by providing an unusually responsive drum level controller in combination with inputs relating to steam flow and water flow. This is accomplished by considering the derivative of steam flow minus water flow in combination with a fast drum level controller.

Abstract: The invention is in an externally ignited internal combustion engine which has one main combustion chamber per cylinder and one ignition chamber which communicates with the main combustion chamber via an excess flow channel, the opening member of which projects into the main combustion chamber and is embodied as a flame injector. After the ignition of the mixture located in the ignition chamber by means of a spark plug, when the jet of flame leaves the excess flow channel and enters the main combustion chamber through the flame injector, the fuel-rich mixture surrounding the opening of the ignition chamber is induced in the vicinity of the cooled walls of the main combustion chamber and thus the temperature of the jet of flame is lowered. In this way, the NO.sub.x concentration of the charge component comprising the jet of flame, and thus also the exhaust gas quantity as a whole, is reduced.

Abstract: In order to enrich the fuel mixture fed to an internal combustion engine temporarily subsequent to engine braking, the invention proposes that engine braking is detected as the combination of a closed throttle and elevated engine speed. A detector for this condition supplies a signal to the fuel shut-off mechanism of a valve-control pulse generator. After engine braking, the counter is reset with the signal from the engine braking detector and counts engine-synchronous pulses. The counter contents are decoded and transformed into an analog signal which is used by the pulse generator for additional pulse extension to supply excess fuel to the engine for a limited period of time.