Abstract: A carburetor having an induction passage with an inlet end and an outlet end for discharging into a corresponding inlet of an associated intake manifold of a combustion engine has a venturi and a main fuel discharge nozzle in association therewith within the induction passage and a throttle valve downstream of the venturi and main fuel discharge nozzle for controlling the discharge of motive fluid from the outlet end and into inlet of the intake manifold; a second induction passage generally in parallel with a portion of the first mentioned induction passage is also provided with an inlet and outlet along with a throttle valve and a fuel discharge passage therebetween; the outlet of the second induction passage is placed in communication with the first mentioned induction passage as to be generally between the venturi and throttle valve of the first mentioned induction passage.

Abstract: An air valve means is shown as having a pressure responsive diaphragm positioned valve member which is positioned as to supply controlled rates of engine idle air flow to the associated combustion engine; the positioning of such valve member is in response to forces created as by pressure differential, across the diaphragm, the magnitude of which is controllable by associated control apparatus responsive as to indicia of engine operation.

Abstract: A fuel metering apparatus is shown as having a throttle body with induction passage means therethrough and a throttle valve for controlling flow through the induction passage means; fuel under superatmospheric pressure is metered through a multi-stage fuel metering valve assembly and such metered fuel is supplied as to the induction passage means; the multi-stage metering valve assembly is shown as having a valve member with a step-like surface reciprocatingly cooperating with a metering orifice of fixed effective flow area so that during a first range of metered fuel flow a first portion of the step-like surface is effective for cooperating with the metering orifice in determining the rate of metered fuel flow while during a second range of metered fuel flow a second portion of the step-like surface is effective for cooperating with the metering orifice in determining the rate of metered fuel flow.

Abstract: A rotatable flywheel is selectively operatively connectable to the power drive train of a related vehicle and is effective to absorb energy from the vehicular ground-engaging drive wheels during vehicle decleration thereby also providing for at least a degree of vehicular braking; a clutch is provided to enable the vehicular ground-engaging drive wheels to accelerate the flywheel while preventing the flywheel from driving such wheels through such clutch; an additional clutch is shown as being provided to enable selectively variable degrees of operative connection between the wheels and flywheel; and a related control is provided for affecting such selectively variable degrees of operative connection.

Abstract: A carbureting type fuel metering apparatus has an induction passage into which fuel is fed by several fuel metering systems among which are a main fuel metering system and an idle fuel metering system, as generally known in the art; engine exhaust gas analyzing means sensitive to selected constituents of such exhaust gas creates feedback signal means which through an associated solenoid transducer become effective for controllably modulating the metering characteristics of the main fuel metering system, and, if desired, the idle fuel metering system as to thereby achieve the then desired optimum metering function; the solenoid transducer is shown as simultaneously controlling two valving members and is effective upon experiencing a failure to assume a position providing for a lean fuel mode of engine operation.

Abstract: A fuel metering apparatus is shown as having a throttle body with induction passage means therethrough and a throttle valve for controlling flow through the induction passage means, fuel under superatmospheric pressure is metered and such metered fuel is supplied to a fuel discharge nozzle situated within the induction passage means downstream of the throttle valve; a first air flow is supplied to the metered fuel upstream of the fuel discharge nozzle as to cause the metered fuel to at least start to undergo atomization even before being discharged at the discharge nozzle; a second air flow is also supplied to the fuel discharge nozzle as to at idle engine speed flow sonically therethrough, and additional throttling valving means are provided for controlling the air flow to the fuel discharge nozzle.

Abstract: A fuel metering apparatus, for supplying metered fuel to an associated combustion engine, has an idle fuel metering and supply system comprising adjustable valving means which, in turn, comprises a discharge orifice means and cooperating valving member which is adjustably selectively positioned with respect to such orifice means in order to thereby establish a desired metered rate of fuel flow through the thusly determined effective flow area of the orifice means for a particular pressure differential thereacross; the adjustable valving member is generally contained within a cooperating body member or portion and access to the valving member, subsequent to it being selectively positioned, is prevented by a closure member or sealing plug placed in position after the said selective positioning of said valving member; the sealing plug is formed as by a hardened metal disc and caged within a body which body is held by the cooperating body member containing the valving member; relative rotation as between the cagi

Abstract: A carbureting type fuel metering apparatus has an induction passage into which fuel is fed by several fuel metering systems among which are a main fuel metering system and an idle fuel metering system, as generally known in the art; engine exhaust gas analyzing means sensitive to selected constituents of such exhaust gas creates feedback signal means which through associated transducer means become effective for controllably modulating the metering characteristics of the main fuel metering system and the idle fuel metering system.

Abstract: The servo circuit is operable to monitor gap conditions on any number of working leads up to four at the same time. It further has the capability of responding to high voltage operating conditions and then reducing the gap voltage being sensed to an appropriate level. An analog stage is then employed to pick out the most valuable information being provided from the several gap leads. An amplifier of the FET type is used to provide high input impedance to the circuit. An absolute value circuit is further included which in either polarity will rectify the gap signal back to the positive level.

Abstract: Included in the circuit are a pair of counter timer circuits, a pair of inverters and a D-type flip flop. The inputs of the counters are tied to a programmable computer buss. A number is loaded into the first counter representative of machining power pulse on-time and a second number is loaded into the second counter representative of machining power pulse off-time.As the first counter counts to 0, the pulse output from the first counter is passed through an inverter to the second counter to enable it. After the second counter counts to 0 there will be provided an output through the second inverter to initiate the operation of the first counter. The pulses which are produced at the termination of each count provide operation of a following flip-flop stage which is toggled to provide on-off time for the machining power pulses to the following power module of the electrical discharge machining apparatus.

Abstract: A programmable system for controlling maximum machining current. A current limit is entered into the system together with the on time and off time desired. The system operates to use the entered on-time and current values, but the off time will be modified depending on the maximum current limit possible. This will protect the apparatus when an impossible combination has been entered by the operator. The duty cycle is checked against a maximum level such as 87% or a like upper limit.

Abstract: A carburetor is disclosed as being formed by die casting and in the process employing two opposed juxtaposed casting cores to form the induction passage and main venturi therein with the result that a flashing of die case metal occurs as between the opposed juxtaposed cores generally transversely of the induction passage generally at the location of the throat of the venturi; after casting the carburetor, the carburetor is placed onto fixture means and a cutting and forming punch or tool is moved relative to the carburetor as to both cut through the said flashing and also seat against the metal of the upstream portion of the venturi in order to assure uniformity of contour thereof especially with respect to the venturi throat as cut and sized by the tool.

Abstract: A tool changer mechanism for a vertical spindle machining center has a remotely positioned tool storage magazine. Tools are transferred between the magazine and the spindle by a tool transfer assembly which is mounted for reciprocating sliding movement along the side of the machining center. The tool transfer assembly incorporates a pivotally mounted support adapted for vertical movement and a rotatable transfer arm, having two grippers, carried by the support. During reciprocating movement of the tool transfer assembly, the support undergoes a pivoting movement with respect to the assembly while the angular position of the arm with respect to the support remains fixed. As the tool transfer assembly reaches the end of its movement toward the spindle, an empty gripper secures the old tool. The support is then lowered so that the arm may be rotated to place a new tool in the other gripper in alignment with the spindle. When the support is raised, the new tool is inserted in the spindle.

Abstract: A fuel metering apparatus is shown as having a throttle body with induction passage means therethrough and a throttle valve for controlling flow through the induction passage means, fuel under superatmospheric pressure is supplied to a fuel discharge nozzle situated within the induction passage means downstream of the throttle valve, air is also supplied to the fuel discharge nozzle as to at idle engine speed flow sonically therethrough, and additional throttling valving means are provided for controlling the air flow to the fuel discharge nozzle.

Abstract: A carburetor is disclosed as being formed by die casting and in the process employing two opposed juxtaposed casting cores to form the induction passage and main venturi therein with the result that a flashing of die cast metal occurs as between the opposed juxtaposed cores generally transversely of the induction passage generally at the location of the throat of the venturi; after casting the carburetor, the carburetor is placed onto fixture means and a cutting and forming punch or tool is moved relative to the carburetor as to both cut through the said flashing and also seat against the metal of the upstream portion of the venturi in order to assure uniformity of contour thereof especially with respect to the venturi throat as cut and sized by the tool.

Abstract: Included in the power supply is an output module connected to the gap which module uses a power FET. This module has its current output and the current to the gap controlled as a linear function of the control voltage applied to the gate of the FET. A suitable input means for the control voltage, includes manually controlled potentiometers, microprocessors, keyboards and the like.

Abstract: An internal combustion engine having an exhaust system is shown provided with an air pump which is effective for supplying air to the exhaust system to oxidize unburned hydrocarbons within the exhaust gases of the exhaust system; a valve assembly, operatively interposed between the air pump and the exhaust system, is effective, in response to parameters of engine operation, to at times cause a portion or even all of the air supplied by the air pump to be delivered to the atmosphere instead of to the exhaust system.

Abstract: A protection system circuit which senses and responds to abnormal gap voltage condition. The circuit is operable in either positive or negative polarity of the gap. The circuit includes two branches, one relating to positive gap polarity and the other to negative polarity. The appropriate one of the two branches is selected by enabling one of two comparators in the respective branches.

Abstract: The system includes a standard servo feed arrangement in which responsive to gap voltage, servo feed is controlled for the electrode tool or alternately the workpiece.A further part of the system includes a gap voltage sensing lead and an analog to digital converter. At a predetermined point, a programmable computer is activated to provide an output signal through a digital to analog converter to influence the servo feed being controlled by the standard type servo feed system.The output from the programmable computer is weighted with respect to the output amplifier to provide a predetermined ratio of magnitude of control. A further embodiment of our invention is a system similar to the servo system described above, but in which the additional control over the servo feed system is exercised responsive to power level sensed in the EDM gap.

Abstract: A carbureting type fuel metering apparatus has an induction passage into which fuel is fed by several fuel metering systems among which are a main fuel metering system and an idle fuel metering system, as generally known in the art; engine exhaust gas analyzing means sensitive to selected constituents of such exhaust gas creates feedback signal means which through associated solenoid transducer means become effective for controllably modulating the metering characteristics of the main fuel metering system, and, if desired, the idle fuel metering system as to thereby achieve the then desired optimum metering functions.