Abstract: Method for casting a metal. In this method, means is provided for casting the metal melted therein. Means for dispensing the metal to the casting means includes means for receiving a predetermined amount of the metal in its solid state, means for the passage of the metal from the receiving means, and means associated with the receiving means and operable generally for depositing the metal through the passage means into the casting means. Means is also provided for moving the casting means to a metal casting position when the metal therein is melted.

Abstract: A switch and terminal assembly adapted to be mounted to a prime mover, such as a dynamoelectric machine or the like. The switch and terminal assembly includes a casing having a plurality of wall means, and a plurality of terminals is provided in the casing having electrical connection sections extending exteriorly of the casing generally in row formation along one of the wall means thereof. A ground terminal is mounted to the casing exteriorly thereof on another of the wall means thereof and has an electrical connection section extending over at least a part of the one wall means so as to be disposed generally in the row formation with at least some of the electrical connection sections of the at least some terminals.

Abstract: A circuit for controlling the speed of an alternating current motor. The circuit has a gate controlled full wave alternating current switch coupled in series relation with the motor, and a phase control circuit coupled in parallel relation with the switch is operable generally for providing signals indicative of the occurrence of a preselected condition. Means is provided for transmitting the indicative signals to the gate of the switch to control the duration of the conduction thereof in either direction and thereby vary the energy delivered to the motor so as to control its speed in accordance with the occurrence of the preselected condition.A method of controlling the speed of an alternating current motor is also disclosed.

Abstract: A load controller has a plurality of operating component units adapted for controlling the supply of power from a source thereof to a load. A pair of separable housings are releasably engaged with each other so as to define a chamber in which the unit plurality is enclosed.

Abstract: A method of attaching a pair of opposite end frames of a dynamoelectric machine to a structural component thereof predeterminately positioned with the end frames for assembly within receiving means respectively provided in the end frames. Molten metal is introduced into the receiving means of one of the end frames for solidifying and forming a rigid tie between the one end frame and the structural component in their respective predetermined positions, and the end frame and structural component are simultaneously inverted upon the solidification of the molten metal for disposing the receiving means of the other of the end frames in position for introducing molten metal thereinto.Other methods of attaching components of a dynamoelectric machine are also disclosed.

Abstract: A method of actuating means for detecting radiant heat from a source thereof with the detecting means having a pair of metallic strips with adjacent oppositely spaced portions thereof interconnected. This method includes the steps of: shielding at least a part of one of the strips from the radiant heat source while subjecting the other of the strips thereto for effecting relative elongation of the strips and causing one of the interconnected adjacent oppositely spaced portions of the strips to pivot relative to the other of the interconnected adjacent oppositely spaced portions thereof; and effecting the movement of means toward at least one position for controlling an electrical circuit in response to the pivotal movement of the strips.A system is also disclosed.

Abstract: A method of protecting auxiliary winding means and main winding means in a winding circuit of a dynamoelectric machine in the event of a current overload. In this method, means is actuated in response to a preselected thermal condition accompanying the current overload for interrupting the winding circuit. Heat is transmitted from means for controlling starting of the dynamoelectric machine to the interrupting means for generally maintaining the winding circuit effectively interrupted for at least a predetermined period, and the starting controlling means is operable generally in response to current flow therethrough to increase its resistance generally as a function of its temperature for impeding the current flow therethrough to the auxiliary winding means at a preselected speed of the dynamoelectric machine.A combination starter-protector device, a method of operating a dynamoelectric machine, and a circuit are also disclosed.

Abstract: A female terminal for receiving in electrical contacting engagement a spade portion of a male terminal. The female terminal includes a strip of electrical conductive material having a distal portion integral with another portion. The distal portion comprises a generally cylindric section having a bore therein which extends generally crosswise of the strip for the electrical contacting engagement with the spade portion. An end on the cylindric section includes a beveled surface for abutting engagement with the another portion of the strip.A method of making a female terminal is also disclosed.

Abstract: A method of making an electrical switch having means adapted to be movable in response to heat supplied thereto between a pair of operable positions. The method includes the steps of: heating the movable means so as to effect its deflection in one of its operable positions and securing a part of the movable means while it is deflected in its one operable position; forming means adapted for heating the movable means with generally the same deflection thereof in the one operable position; and disposing the heating means so that it is generally spaced closely adjacent the movable means when it is deflected in its one operable position.

Abstract: A control device adapted to select a set-point temperature for a condition responsive device. The control device has temperature selecting means rotatable through a preselected temperature range generally between a pair of opposite rotated positions, and resilient means is disposed for engagement with a part of the temperature selecting means upon rotation thereof in response to a rotative applied force from one of the opposite rotated positions toward the other thereof so as to arrest the rotation of the temperature selecting means in a predetermined rotated position between the opposite rotated positions. Means is movable in response to another applied force thereon for driving the resilient means toward a displaced position disengaged from the part of the temperature selecting means, and the temperature selecting means is thereafter further rotatable upon further exertion of the rotative applied force thereon from the predetermined rotated position toward the other opposite rotated position.

Abstract: The process for producing polyamide acid and polyimide polymers for use as coating materials by reacting an aromatic dianhydride reactant with an aromatic diamine reactant to produce a polyamide acid polymer wherein said reactants are present in approximately equal molar quantities, by utilizing the steps of forming an anhydrous mixture of an aromatic dianhydride reactant and an aromatic diamine reactant in an organic solvent wherein the reactants are in the molar ratio of about two-to-one, reacting said reactants at a temperature below that at which imidization occurs to form an amide acid intermediate having two free carboxyl groups each ortho to an amide group, and further reacting said amide acid intermediate with a reactant of the character of the original reactant initially present in the lesser amount with said additional reactant being in the molar amount equal to the molar amount of said lesser initial reactant thereby to form a polyamide acid polymer for use as a coating material.

Abstract: A control system for a fuel flow control valve which is enabled on thermostatic demand and closed thereafter if ignition fails. The control system includes an enabling circuit for the control valve in series with a controlled switching device and a circuit for energizing a fuel igniting system. The control system also includes circuitry for selectively supplying enabling pulses to the controlled switching device to enable the control valve and to energize the fuel igniting system along with timing circuitry for selectively preventing the application of those enabling pulses to the controlled switching device. The timing circuitry includes a transistor which when enabled shunts those pulses to ground rather than to the controlled switching device, and the control system is fail safe in the sense that neither a shorted transistor nor a shorted controlled switching device will allow the escape of significant unburned fuel.

Abstract: A digital timer has means operable generally for indicating digital time and means for actuating the indicating means to effect the digital time indicating operation thereof. A drive train is provided for connection with the actuating means and includes means adapted to be intermittently rotatable, means for driving the rotatable means in a predetermined time sequence to effect the intermittent rotation thereof, and means for translating the intermittent rotation of the rotatable means to the actuating means.A method of operating a digital timer is also disclosed.

Abstract: A switch and terminal assembly adapted to be mounted to a structural component of a dynamoelectric machine by an electrical conductive mounting member. The assembly has a casing, and receiving means is provided through the casing for accommodating the mounting member. A grounding device is disposed in the casing for connecting the dynamoelectric machine to ground, and the grounding device includes means associated with the receiving means for engagement with the mounting means upon the mounting thereby of the assembly to the dynamoelectric machine structural component.

Abstract: A ramp and pedestal phase control circuit for controlling electrical energy supplied from an alternating current source to a load. The circuit has a controllable alternating current switching device, and bilateral threshold means is provided for enabling the switching device to conduct current from the source to the load when the magnitude of the voltage across the threshold means exceeds a predetermined value. A first circuit rapidly increases the voltage across the threshold means to a value less than the predetermined value, and a second circuit more slowly further increases the voltage across the threshold means to the predetermined value so as to enable the switching device. The first and second circuits are effective on successive half cycles of the alternating current source to reverse the polarity of the voltage across the threshold means.

Abstract: A combination starter-protector device for a winding circuit of a dynamoelectric machine. The device has a housing with at least one terminal therein adapted for connection with a power source, and means is provided in the housing for controlling starting of the dynamoelectric machine. Means is mounted to the housing for electrical contact and positioning engagement with the starting controlling means and adapted for connection in circuit relation with the winding circuit. Another circuit is provided between the engagement means and the at least one terminal for supplying power to the winding circuit when the engagement means is connected in circuit relation therewith, and the other circuit includes means in the housing and operable generally in response to a certain thermal condition occasioned upon winding circuit overload for interrupting the other circuit.Other combination starter-protector devices are also disclosed.

Abstract: A control circuit for an electric motor adapted for operation in three speed modes and having a winding circuit with three main windings serially connected together in circuit relation therein adapted for connection in three different speed mode effecting combinations across a power source. The control circuit has means for rendering two of the windings effective in the winding circuit and alternatively rendering all three of the windings effective in the winding circuit.

Abstract: A method of assembling a temperature responsive resistance member within a pair of separable housings. This method includes the steps of: mounting the temperature responsive resistance member in both supporting engagement and electrical contacting engagement between a pair of electrical terminals; and joining the separable housings against displacement so that the temperature responsive resistance member in both the supporting engagement and the electrical contacting engagement with the terminals is disposed within the housings in predetermined spaced relation therewith with portions of the terminals extending exteriorly of the housings.

Abstract: A terminal block assembly for an electrically energized device. The terminal block assembly has a housing, and a plurality of predeterminately spaced male terminals are mounted to the housing with spade portions extending from the housing. Means adapted for removable mounting with the male terminals has a casing containing a plurality of female terminals. The female terminals respectively include: a strip of electrical conductive material; opposite end portions on the strip respectively comprising a generally cylindric section and means for electrical connection with an electrical lead; and a bore in the cylindric section having a generally continuous circumferential portion for electrical contacting engagement with a respective one of the spade portions.

Abstract: A method of stripping from a dynamoelectric machine stator a plurality of windings thereof having one of a pair of opposite generally annular grouping of end turns of the windings secured therefrom. The method includes the steps of: lowering the stator onto means for seating and supporting it so as to dispose the other of the end turns in a predetermined position; gripping the other end turns for maintaining them generally against displacement from the predetermined positions; and driving the seating means generally upwardly relative to the winding and moving the stator conjointly therewith toward a position displaced from the windings while gripping the other end turns in the predetermined position thereby stripping the windings from the stator.