Abstract: Disclosed is a method and apparatus for continuously stacking and discharging a predetermined number of flat folded, glued box blanks issuing from a folder-gluer without limiting the operating capacity of the folder-gluer. Provided is a conveyor means for depositing a predetermined number of blanks on a stacking table. Interposed between the conveyor and table are counter means and blank deflecting means. After a predetermined number of blanks have been counted, the counter activates the deflecting means and a secondary support means. The next following blank is deflected and engaged by a secondary support means and it and the following blanks are supported thereby until the blanks on the support table have been discharged and the table assumes the support of the new stack.

Abstract: This invention relates to a fume hood in which side and top walls define a space enclosed on all sides but the underside, the hood having baffle plates within the space, the plates sloping upwardly and outwardly adjacent the side walls, the plates having their upper edges spaced from the walls of the hood. Suction opening is located in the top wall centrally above the baffle plates.

Abstract: A continuous automatic beverage brewer is provided for producing a brewed liquid beverage, such as coffee, in any desired pre-selectable amount. The brewer includes means for supplying a liquid, such as heated water, and a solid particulate beverage ingredient, such as ground coffee, to a mixing duct through which the mixture passes for a time sufficient to effect proper brewing. A moving filter intercepts the mixing duct so that a fresh surface of the filter is continually presented to the mixture of brewed beverage and spent solid residue of the beverage ingredient to thereby achieve effective filtering. Preferably the moving filter comprises a continuous belt of filter material, the surface of which moves continually past the output of the mixing duct so as to continually remove the spent solid residue. When continuously brewing a hot liquid beverage (e.g.

Abstract: A method and means are described for transferring rows of articles having one alignment on a first support to a second support where the rows have a differing alignment. Preferred method and means are described for transferring straight rows of articles, such as eggs, from a row conveyor to a processing machine having a turret or other curved article supporting arrangement. The transfer means includes slidable mountings for the article supports on the turret and a cooperating camming means which temporarily moves the supports into a straight line when they are adjacent to the row conveyor for receiving the straight row of articles.

Abstract: In punching, cutting and forming presses and the like, electronic detecting means and/or sensors are provided so as to trip the press and prevent an operation when a mal-function occurs such as a tear in the strip material or a mis-alignment or a mis-feeding of the strip. When the press is equipped with an elbow arrangement to permit adjustments for feed line height while maintaining feed cycle synchronization, then the arrangement must incorporate the automated locking device of the invention, the same automatically unlocking the swing plate simultaneously with the tripping of the press.

Abstract: A waste compacting apparatus includes an elongated waste receiving chamber of rectangular cross section, a size reduction chamber of decreasing rectangular cross section and an elongated outlet snout of rectangular cross section affixed to the smaller end of the size reduction chamber. A compaction ram having a forward-protruding shearing knife is slidably mounted in the waste receiving chamber and is adapted for reciprocating movement between a rearward position that permits waste to be loaded into said elongated waste receiving chamber and a forward position up to the point of size reduction.

Abstract: A half-herringbone support for the comb hammers of a dot matrix line printer is disclosed. The half-herringbone support is generally flat and includes an elongate base and a series of parallel tines integrally formed with said base and projecting obliquely outwardly from one edge of the base. The number of half-herringbone tines is equal to the number of hammers. The base of the half-herringbone support is affixed to the base of the hammer support on the side containing the hammer anvils (balls). The outer tips of the half-herringbone tines project to a point where they each intersect the mid-region of a related hammer. The tips of the half-herringbone tines are welded to the hammers at the points of intersection.

Abstract: Print smearing observed in double wide hammers can be controlled and reduced by providing the impact face of the print hammer with a concave cylindrical radius of curvature wherein the cylindrical axis is parallel to the vertical font direction. The radius of curvature is chosen according to impact energy and font velocities. In other embodiments, the timing of impact between the hammer and font characters may be offset such that the center of the print column leads the center of the impact hammer at the time of impact. In another embodiment, the radius of cylindrical curvature may be ground off center from the center line of the print hammer by a predetermined offset.

Abstract: A stencil duplicator includes stencil ejection apparatus including a mechanism to release the clamp for the stencil head, a guide to lead the head, as the duplicator rotates, to drive members which forward the used stencil into a container in which it is folded or creased so as to be foreshortened and stored with other stencils in a small space prior to disposal.

Abstract: A screen-type printing stencil has therein plural openings arranged in an overall pattern which is formed by the repetition of the arrangement or location of a pattern period or primary or basic pattern. The pattern period includes at least two differently shaped openings. No two openings of a given pattern period may be brought into coincidence or superimposition with each other upon the rectilinear shifting or translation of one with respect to the other.

Abstract: A frame for silk-screen printing holding a cloth of thermoplastic material attached to a thermoplastic frame surface is disclosed. The frame elements comprise a rectangular metal frame with each element having a metal bar with outwardly directed flanges attached to it. A series of contoured plastic strips having channels engage each of the flanges and are slidably mounted on each bar. The cloth is stretched across the contoured plastic strips and by the application of heat the strips melt and fuse with the cloth.

Abstract: A duplicating arrangement which includes a copying machine for copying an original and an offset printing machine operatively connected to the copying machine for producing prints from a master copy. The copying machine and the offset printing machine are both constructed so as to be independently functional modules with an automatic control device being provided for controlling the operation of the copying machine and offset printing machines such that, depending upon the duplications to be made, the duplicating arrangement feeds a copy from the copying machine to either a depository or the offset printing machine, wherein the copy so-forwarded serves as a master copy in the offset printing machine.

Abstract: Apparatus comprising a pair of tamping machines mounted in side-by-side disposition on a railway vehicle on a railway track for consolidating ballast supporting the railway track. Each tamping machine comprises two pairs of normally opposed tamping units juxtaposed on a carriage for simultaneous up-and-down motion therewith between a retracted and an operating position. Included in each tamping unit pair is a pair of tamping tools which, while being driven into ballast on opposite sides of a crosstie, are both vibrated and oscillated for compacting the ballast. For use of the machine at a railway switch or over guardrails, a swivelling mechanism comprising an adjusting bolt is provided for pivoting each pair of tamping units about vertical axes and holding the same in desired angular positions with respect to the carriage.

Abstract: A radial axle railway truck has a pair of wheel and axle assemblies with profiled wheel treads of greater than conventional conicity to steer the assemblies by means of the differential effect of the inner and outer wheel diameters on curved track, the axle bearings are located inboard of the wheels, and the truck frame side members are correspondingly located inboard of the wheels and there supported on the axle bearings such that longitudinally acting resilient restraint means between the axle bearings and the truck frame resist substantial movements of the axles longitudinally of the truck frame while offering only limited resistance as a couple to steering movements of the axles with respect to the truck frame because of the relatively short transverse moment arm between the longitudinally acting resilient means.

Abstract: A railway hopper car having doors movable downwardly and outwardly to a dump position is provided with an improved locking arrangement that includes a cam lever actuated by means of a push-pull link extending outwardly under the side of the hopper. The link is pivotally connected to a camming lever having a hinged latch element connected thereto. The latch element and camming lever are locked in a relatively angular position. The link arrangement upon actuation moves the cam lever and link to a substantially linear configuration thereby disengaging the latching element from the keeper member provided on the door structure.

Abstract: A guide latch mechanism to restrain cargo in three directions. The mechanism retracts to permit cargo to pass over the mechanism and automatically erects to a vertical position for future use.

Abstract: A sewing machine for sewing buttonholes in a workpiece comprises a stationary lower part and an arm having one end pivotally mounted on the lower part and having an opposite end which carries a rotary hook which cooperates with a reciprocating needle carried in the lower part. The arm is pivotal relative to the base part to move the arm from a fixable sewing position with said hook spaced by a predetermined distance from the needle at a stitch-forming area to a rest position in which it is spaced away from the stitch-forming area. A thread-monitoring device is located adjacent the needle for monitoring the thread and detecting any breakage thereof. The machine includes a buttonhole cutting mechanism which is connected to the drive means so as to periodically cut the workpiece. A clamp is carried by the upper arm and it has a lower portion which rests on a resilient support which is biased upwardly by a spring.

Abstract: A tufting machine having loop seizing hooks facing opposite to the direction of fabric feed is disclosed having respective gate members pivotably mounted on the rear of the hooks. The gate member has a latch for selectively engaging the rear of the hook bill to lock entry of a loop into the closed end of the hook and onto the blade of the hook. Loops so precluded are shed by the hook bill as the hook rocks away from the loop seizing position and form uncut loop pile. Loops that are allowed to enter onto the blade portion are cut by a knife cooperating with the hook blade to form cut pile. The loop seizing edge of the bill is spaced from the loop engaging edge of the blade relative to the backing fabric. The gate members are disclosed as moved by pneumatic cylinders operable by electrically controlled air valves. The air valves selectively respond to timed signals received from a pattern control.

Abstract: A yarn feed roller assembly for a tufting machine pattern attachment for controlling the amount of yarn supplied to the needles of the machine in accordance with a pattern. The assembly includes a plurality of roller sets, each roller of the set having an inner race secured for rotation to a shaft driven at a different speed than the other rollers of the set. The roller also has an outer race journally supported on the inner race for rotation relative thereto. The outer race has a toothed ring at the inner circumference and the inner race carries a plurality of toothed segments adapted for coupling engagement with the ring to drive the outer race. The segments are comprised of magnetic material and an external magnetic field is selectively energized to attract the segments of one or the other rollers into engagement with its ring to feed yarn at the rate of the selected roller.

Abstract: A portable applicator for applying a dry fertilizer and/or insecticide material onto the surface of the earth adjacent a plant, and including an elongated essentially tubular body structure carrying at its upper end a container of the dry material andcontaining a passage through which the material flows downwardly to a bottom outlet under the control of a rotary valve element which is preferably actuated by a handle part serving the dual purposes of assisting in holding and manipulating the overall tool and also actuating the valve element when the handle grip is turned about its axis. The lower end of the body has fingers capable of cultivating the earth's surface for working the deposited dry material a short distance into that surface.

Abstract: Button stitching and sewing machine comprising a control disc with paths to control a needle swinging device and a cloth moving mechanism which is complete with an orienting device. Combined, conjugated control paths of the disc include first main sections for controlling button stitching, second such sections for controlling fixing stitches, and third main path sections for controlling the shank formation. According to the invention, fourth path sections are inserted for controlling through stitches, namely between the second and the third main path sections. Additional, optional features are also disclosed.

Abstract: In a zig-zig sewing machine an automatic adjustment is provided for obtaining the correct values for stitch-length and upper thread tension in sewing fancy seams or button holes by moving a setting knob for such seams to the required symbol. The adjustment is made independently of the existing setting established for stitch-length and thread tension by the use of a pattern selector which in addition to selecting a required pattern activates controls for cloth feed and over-thread tension by a cam and linkage system which transmits movement from the pattern selector directly to an adjustable cullis and thread brake.

Abstract: A decorative textile having loose thread ends wherein the sewing holding the thread sections together or hold the thread sections to a flat base textile is covered by the loose thread ends. The decorative textile is produced by winding a flat coil form having an open slot with thread such that the open slot is at least partially covered with the thread windings, stitching the thread winding on a sewing machine through the slot, cutting the thread windings on both sides of the coil form thereby exposing the loose thread ends, and removing the decorative textile from the coil form. The decorative textile may be produced with or without the fabric base support. Various designs, defined by the open slots, may be applied to a fabric base. A sewing machine accessory to produce the decorative textiles is disclosed.

Abstract: A slide fastener with knitted tapes is manufactured by knitting the tapes, and shrinking the knitted tapes at least twenty-five percent in width, and then after shrinking, sewing fastening elements to the tapes by lines of stitches between the second and third wales.

Abstract: A drawn and ironed easily hand-held metallic container construction is provided and has a central longitudinal axis, a sidewall, and a high-performance bottom wall. The bottom wall has a first substantially frustoconical portion adjoining the sidewall and extending downwardly and toward the longitudinal axis, a second frustoconical portion interconnected to the first frustoconical portion and extending upwardly therefrom toward the longitudinal axis. The bottom wall also has a substantially semi-torroidal inwardly convex bead adjoining the second frustoconical portion and a dished portion adjoining the semi-torroidal bead with the dished portion having a flat central part.

Abstract: The invention relates to an anchor which includes an anchor head having flukes thereon and a shaft to which at an outer end thereof an anchor warp is connected. The shaft is pivotally mounted with the head of the anchor and is formed having an elongate primary shaft pivotally connected with the head at an inner end and having a recess therewithin which mounts, in normal operation a secondary shaft which has its inner end connected with the anchor head.

Abstract: An anchor includes a fluke attached to a shank having a forwardly located cable attachment point. The fluke includes concave side surfaces, and these side surfaces can serve to orientate the anchor to an upright burial position by interaction with the sea bed and to stabilize the anchor when buried in the sea bed. The fluke side surfaces are also arranged, either by relative orientation thereof or by the inclusion of a flat fluke portion interconnecting the side surfaces, such that, when the anchor is pulled through the sea bed, the peak pressure focus zone produced by the sea bed soil on interaction of the fluke with the soil is located clear of the shank and clear of the forward path of burial movement of the shank.

Abstract: Pneumatic tire having an integral inflation indicator in the form of interdigitized groups of raised mesas affixed to the sidewall of the casing on opposite sides of the centerline of the sidewall. The two groups pivot apart by flexing of the sidewall under load when the tire is under-inflated, and they tend to overlap at the centerline when the tire is over-inflated. Indicators carried by the mesas indicate by position the extent of under-inflation or over-inflation.

Abstract: A knob for a cooking vessel is a whistle which gives an audible signal that cooking temperature has been reached, and has a valve slide for shutting off the whistle. Supporting inside and outside knob parts incorporate halves of a resonance chamber, which makes the knob extremely simple to mold, assemble, clean, and disassemble. The valve slide rests in guides which make it impossible to assemble incorrectly, and overlaid by a knob cover.

Abstract: The storage of material that is biologically active such as semen for use in artificial insemination, requires that it be held at a cryogenic temperature at which it is inactive. A package of such a material has a transparent container sealed at one end within which there is a frozen indicator of a color different than that of the material and which has a melting point close to but above a selected cryogenic temperature at which the material is inactive. A barrier is between the material and the indicator and of a type permeable by the indicator if melted and in storage, the indicator containing end of the container is uppermost. The volume of the indicator is such that if the indicator melts, it will flow through the barrier and irreversibly discolor the material as proof that proper storage conditions have not been maintained.

Abstract: In the production of all-carbon composite articles by the cracking of a hydrocarbon gas to deposit carbon on a fibrous carbon substrate the substrate is held in the furnace by a ram movable in the furnace to engage the substrate. The gas is introduced inside the annular substrate and evacuated at a position spaced laterally from the substrate so that the gas is forced to disperse through the substrate wall.

Abstract: A fully automated apparatus for cleaning and conditioning bowling alleys including the scrubbing and re-oiling while simultaneously dusting the ball-return. The mechanism is suspended from a track mounted to the ceiling parallel to the bowling alleys and located between adjacent bowling alleys, the cleaning and conditioning mechanism is secured to the track by means of a rigid arm which is designed to be collapsed up against the track when not in use. The mechanism is driven along the track at a predetermined speed and solvent or oil is metered to be applied at an appropriate rate to assure a complete reconditioning. The cleaning of the alley is done as the mechanism moves toward the foul line and the oiling is completed on the return trip.

Abstract: Apparatus for applying fluid coloring material to the sidewall of a vehicle tire and including a stand adapted for placement on a supporting surface adjacent the vehicle tire. A holder including an applicator is mounted to the stand. The holder is vertically adjustable and the applicator is outwardly movable to apply coloring material to the vehicle tire sidewall. The applicator is normally biased into engagement with the sidewall, but a holding element is operative to hold the applicator away from the sidewall in an inoperative position when desired. The stand includes a base having a foot shelf extending inwardly of the base periphery whereby an operator can steady the stand by applying foot pressure to the inner extremity of the foot shelf.

Abstract: A cow trainer hung from an electric wire has a disconnect switch between a metallic hanger bracket and a metallic stem or rod which carries the cow contact bar. The switch comprises an insulating sleeve having a bore in which one end of the stem slides. A pair of insulating hanger straps interconnect the sleeve and the stem whereby the weight of the stem and cow contact bar normally pull the straps to a fully extended position in which the end of the stem is in spaced relationship to the hanger bracket and out of electrical contact therewith. The straps yield upwardly when the stem is subject to upward movement when the cow humps her back, thus to permit the stem to slide upwardly in the bore and make electric contact with the hanger bracket and shock the cow.

Abstract: A dog tether for a wheeled vehicle such as a bicycle comprising a stand-off bar which has a clamp at its inner end for attachment to the bicycle frame, and a resilient mounting for the clamp yieldable to take up any sudden jerk by the dog. The outer end of the bar has an adjustable chain or wiffle-tree attachment for respectively tethering one or more dogs.

Abstract: The invention relates to automatic feeding apparatus for animals and particularly for domestic cats. The apparatus operates to provide a constant supply of food and drink respectively in a food dish and a drinking vessel. The food is automatically supplied to the food dish by means of a hopper and the liquid passes from the liquid container through a special cap into a reservoir which is in communication with the drinking vessel. The liquid container is removably mounted in clips formed integrally with the hopper and the cap includes a pivotally mounted flap arranged so that the flap can be opened when the liquid container is inserted into the clips and the cap is pressed downwardly into the reservoir.

Abstract: To sort animals by their weight, a moveable chute within an animal sorter is held at an elevated position by a counterbalance and rests upon rails which permit it to move to a lower position against the weight of the counterbalance when animals on the chute exceed the weight of the counterbalance. A single entrance permits animals to enter the chute while it is in the elevated position and pass through it to one exit if they are of a weight less than the weight of the counterbalance. The chute moves downwardly and laterally to its second position to be aligned with a second exit if the animal is heavier than the counterbalance.

Abstract: Engine fuel injector control circuitry comprising a pulse generator that duces long duration pulses. NOR gate circuitry is actuated by each pulse to operate a ramp generator. The ramp generator output changes at a rate determined by current flow generated by an engine speed sensor. Ramp generator output is applied to an input terminal of a comparator to produce rapid switching of the comparator output for starting the injection of fuel into an engine cylinder. Injection is terminated by the trailing end of the long duration pulse.

Abstract: A plurality of sensors generate signals representing engine parameters indicative of the engine fuel requirement. These signals are all applied to a single function generator to form a composite signal that is a nonlinear function of the engine fuel requirement. One of the sensors responds to absolute intake manifold pressure; responsive to this sensor, operation is inhibited, while the absolute intake manifold pressure is below a predetermined value representative of engine deceleration. An engine starter switch generates a trigger pulse to actuate an overriding multivibrator that overrides normal operation as the engine is started. One of the sensors also responds to engine coolant temperature; responsive to this sensor, the actuation duration of the overriding multivibrator is controlled in reverse relation to the coolant temperature.

Abstract: An arrow release mechanism formed of only eight separate parts, such mechanism including a handle, a pair of opposed jaws pivotally coupled to the handle, and a trigger, pivotally coupled to the jaws, for releasing a locking assembly to thereby release a substantially spherical arrow nock grasped in substantially hemispherical sockets in the jaws. The pivotal coupling of the jaws and the handle together with the reception of the substantially spherical nock in the substantially hemispherical sockets provides a universal coupling between the arrow and the handle so that relative movement therebetween during aiming of the arrow will not mar the accuracy of the aiming.

Abstract: A V-shaped, air-cooled engine is provided with a cover on the front thereof, which houses a cooling fan connected to the engine's crankshaft. The interior of the cover is fitted with dividers to separate the air flow and direct it to the opposite sides of the engine, and to form a compartment for housing components of a non-contact ignition system. The non-contact ignition system is operated by the cooling fan, and is cooled by the flow of air through the cover. Components of the ignition system are permanently connected to each other, without the usual separable connectors.

Abstract: A variable control mechanism for regulating the opening of an engine valve during each cycle of operation is disclosed. The control mechanism essentially includes hydraulic restraint means which control the relationship between camshaft movement and valve opening in an operating train wherein rotary motion of the camshaft is translated into linear movement of the valve. One form of the invention includes a pivotable rocker arm, one end of which is operatively connected to the cam shaft by a cam follower and push rod and the other end of which is operatively connected to the valve. Effective movement of the rocker arm to actuate the valve is controlled by a hydraulic system, including a movable sleeve the operation of which is controlled by varying hydraulic pressures so that by increasing or decreasing the hydraulic pressure the opening of the cylinder valve can be controlled.

Abstract: A device for rotating a reciprocating valve executing alternating opening and closing strokes has an overrunning clutch coupled to the valve stem; a control lever; a first articulation connecting the control lever to the overrunning clutch; and a second articulation supporting the control lever at a distance from the overrunning clutch. The control lever is arranged to impart to the overrunning clutch a torque derived from the reciprocating motion of the valve. The overrunning clutch transmits the torque to the stem for effecting rotation thereof about the stem axis solely during the closing strokes. The second articulation is situated at a predetermined fixed location selected such that a line connecting the articulations defines a first angle with the valve stem axis at the end of each closing stroke and a second angle at the end of each opening stroke. The first angle is acute and the second angle is at the most 90.degree. and is greater than the first angle.

Abstract: A system for limiting the speed of a gasoline engine includes a circuit responsive to the engine speed which provides control signals to a solenoid valve which in turn controls a vacuum actuator. The vacuum actuator then overrides a manual throttle control to move the throttle toward closed position when a governed engine speed is approached. A control circuit provides a signal having four components; one proportional to engine speed, second and third proportional to engine acceleration and a fourth which is the integrated difference between the engine speed and a preset governed speed. In addition a speed switch actuated when an overspeed condition occurs is effective to inhibit the third component and to increase the fourth component to its maximum value to effect maximum governing action and system stability. The control signal controls a duty cycle oscillator which actuates the solenoid valve.

Abstract: A method and apparatus for detecting cylinder malfunction by monitoring the actual rotational speed in an internal combustion engine, e.g. with an inductive transducer. This signal is compared in phase with pulses from a voltage controlled oscillator, the control voltage of which comes from an integrating circuit driven by the phase comparison signal in the manner of a phase-locked loop.The VCO pulses are used to clock a shift register and the actual pulses provide the data input for the shift register. Thus, the relative arrival time of the two pulse trains determines the contents of the shift register. Decoding circuitry is used to interrogate the shift register and to actuate an output device when the contents of the register indicate an unsymmetric periodicity, caused by cylinder malfunction.

Abstract: In an internal combustion engine having a carburetor, a mixture ratio control system by means of which the fuel-to-air ratio of the combustible mixture to be produced in the carburetor is regulated toward a predetermined target value and furthermore the pressure in the fuel delivery circuit of the carburetor is temporarily increased or decreased at an incipient stage during a period of time for which the fuel-to-air ratio of the mixture as detected from the exhaust gases resulting from the mixture is reduced below or increased beyond the predetermined target value.

Abstract: An exhaust gas recycling system for use in an internal combustion engine in which downstream exhaust gas recycling is started when the carburetor throttle valve is opened larger than a first predetermined opening degree, while upstream exhaust gas recycling is commenced when the carburetor throttle valve is opened larger than a second predetermined opening degree. The second predetermined opening degree is set at a level exceeding at least a maximum amount or peak value of the downstream exhaust gas recycling, and thereafter, reduction of downstream exhaust gas recycling ratio following decrease of intake negative pressure at the downstream of the carburetor throttle valve is compensated by increase of the upstream exhaust gas recycling augmented in proportion to the intake amount of the air-fuel mixture, through employment of flow rate control valves for the upstream and downstream exhaust gas recycling.

Abstract: A combination control valve and heat exchanger for the exhaust gas recirculated from the exhaust manifold of an internal combustion engine to the carburetor thereof wherein the combination unit is compact and adapted to be mounted on the intake manifold or a spacer plate below the carburetor. The heat exchanger has a plurality of U-shaped tubes to receive the exhaust gas and reduce the temperature level thereof before it reaches the control valve metering the quantity of exhaust gas returned to the combustion cycle.

Abstract: As part of an evaporative emission control system for an automotive vehicle, the fuel bowl of the carburetor for the internal combustion engine of the vehicle is provided with an internal vent passage for venting fuel vapor from the fuel bowl to the air cleaner, for example, for induction through the induction passage in the carburetor for flow to the engine during engine operation and, with an external vent passage for venting fuel vapor from the fuel bowl to a vapor storage canister when the engine is not in operation, as during hot soak, the internal vent passage having a cross sectional flow area at least two times larger than the minimum cross sectional flow area of the external vent passage whereby changes in pressure at the canister will tend to result in air cleaner depression changes with minimal differential pressures between the carburetor fuel bowl and air cleaner.

Abstract: A fuel injection system for an internal combustion engine includes an air flow responsive baffle plate in the induction tube which is subject to an adjustable elastic restoring force. The pivotal shaft of the baffle plate rotates inside of a bushing which is itself adjustable rotatable within the induction tube. A control slot in the bushing is covered to varying extent by a control edge on the pivotal shaft so that fuel which enters a groove in the shaft is metered according to the relative rotation of shaft and bushing. The metered fuel is conducted through a conduit in the baffle plate and is expelled through a nozzle or a valve into the induction tube.