Abstract: A stator assembly for a dynamoelectric machine has a yoke member formed of a continuous strip of ferro-magnetic material with a generally cylindric inner surface. A plurality of spaced teeth are provided extending axially along and inwardly from the inner surface of the yoke member and having inner ends which define a bore for receiving a rotor member. Each of the teeth includes a plurality of axially and inwardly extending ferro-magnetic flat segments of ferro-magnetic strip material and connecting portions respectively positioned between adjacent ones of the teeth. Each of the connecting portions is formed of a ferro-magnetic strip material and has leg elements which respectively form parts of the adjacent ones of the teeth and a connecting element which extends between the leg elements.

Abstract: A stator core structure for a dynamoelectric machine has a filament of ferro-magnetic material generally spirally disposed in at least one generally planar layer. A plurality of spaced apart teeth is provided in the layer each being respectively constituted by a plurality of generally contiguous open loop portions of the filament, one of the loop portions in each of the teeth having an end defining at least in part a bore in the stator core structure. A plurality of connecting portions of the filament are respectively joined between the loop portions.A method of manufacturing a stator core structure for a dynamoelectric machine is also disclosed.

Abstract: An electrical switch has a housing, and means is adapted to be selectively movable in the housing for operating the electrical switch. Means having a deflected portion therein is engaged between the housing and the operating means for yielding generally as a collapsible column to oppose the selective movement of the operating means.

Abstract: Melting and casting apparatus wherein a metal pellet is transferred from a receptacle into a casting ladle. Thereafter, the casting ladle is moved into a RF heater where the pellet is melted. The casting ladle containing the molten metal is then moved by a suttle and guide arrangement to a pouring position where the casting ladle is tipped by a linkage assemble to pour the metal.

Abstract: An anticipator for controlling the cycle rate of a thermostat. The anticipator has means for transferring heat supplied thereto, and a negative temperature coefficient resistor is enclosed within the heat transferring means and disposed in heat transfer relation with it for supplying the heat thereto. The resistance of the negative temperature coefficient resistor varies as a function of its temperature wherein the negative temperature coefficient resistor is responsive to current applied thereto to attain an operating temperature appreciably in excess of that of the ambient in which the anticipator may be located for generating the heat.A thermostat is also disclosed.

Abstract: A method of attaching an end frame and another structural component of a dynamoelectric machine wherein the structural component is positioned within a receiving means therefor in the end frame. At least one of the end frame and structural component is moved relative to the other thereof to an aligned position for assembly with each other, and metal is cast into the receiving means for forming a rigid tie between the end frame and the structural component for maintaining them in their aligned assembly position. Apparatus for rigidly interconnecting an end frame with another structural component of a dynamoelectric machine is also disclosed.

Abstract: An electrical contact adapted to be mounted to a supporting member. The contact has a body with a peripheral portion, and a plurality of means is provided adjacent the peripheral portion for mounting the body in displacement preventing engagement with the supporting member.A method of mounting an electrical contact to a supporting member therefor and an assembly of an electrical contact and a supporting member are also disclosed.

Abstract: An electrical switch is provided with means movable in response to heat supplied thereto between circuit controlling positions, and the movable means has a predetermined generally arcuate configuration in one of its circuit controlling positions. Means for heating the movable means is predeterminately provided with a configuration generally corresponding to that of the movable means in its one circuit controlling position, and the heating means is disposed closely adjacent the movable means in its one circuit controlling position.A method of calibrating a bimetal strip is also disclosed.

Abstract: A detector for radiant heat has a housing with means movable therein between positions for controlling an electrical circuit. A pair of elongate metallic strips are disposed generally in overlaying relation and have adjacent portions thereof respectively interconnected, and one of the strips is adapted to be subjected to the radiant heat while generally shielding at least a part of the other of the strips therefrom. Means is spaced from the interconnected adjacent portions of the strips for separating them, and the one strip is elongatable upon subjection of radiant heat thereto relative to the shielded other strip for effecting pivotal movement of the strips generally about the separating means. Means is disposed between at least one of the one and other strips and the controlling means for effecting movement thereof to at least one of the circuit controlling positions upon the pivotal movement of the strips.

Abstract: A control circuit for varying the speed of a dynamoelectric machine having a plurality of windings selectively energizable in different configurations for operation of the dynamoelectric machine at different speeds from an alternating current source. The control circuit has a phase control circuit for providing signals having a controllable phase relation to the alternating current source. A gate controlled full wave alternating current switch is connected in parallel with one of the windings, and the parallel combination of the one winding and the switch is connected in series with at least another of the windings whereby the switch conducts generally the full alternating current source voltage applied to the other winding. Means couples the phase control circuit to the gate of the switch to control the start of the conduction of the switch.A control circuit in a refrigeration system and a method of controlling speed of a dynamoelectric machine are also disclosed.

Abstract: A method of assembling a dynamoelectric machine having a stationary member, a rotatable member, and a pair of means for rotatably supporting the rotatable member within the stationary member. In this method, beams are attached to the stationary member, and opposite end portions of the beams extend from the stationary member. The rotatable means is then mounted with the stationary member and the supporting means with one of the opposite end portions of the beams within means in one of the supporting means for receiving them. The receiving means is at least partially filled with molten metal which solidifies for interconnecting the one opposite end portion of the beams with the one supporting means, and the other of the supporting means is then secured to the other of the opposite end portions of the beams.

Abstract: A thermal timer has a pair of means responsive to oppositely acting thermal differentials established therebetween for pivotally moving generally in opposite directions through a predetermined time cycle.A thermal control system, and circuit for operating an electrical device, and a thermal actuator for a thermal timer are also disclosed.

Abstract: A stator structure for a dynamoelectric machine has a plurality of generally U-shaped segments each terminating in spaced ends and constituted by a plurality of elongate ferromagnetic filaments. The segments are arranged in a generally contiguous relationship to form a magnetic core having discrete polar areas with the spaced ends defining a bore within the magnetic core. At least one winding extends generally about a respective one of the segments between the spaced ends thereof.

Abstract: Apparatus for severing from a plurality of windings in a dynamoelectric machine stator a generally annular grouping of winding end turns extending from an end face of the stator. The apparatus has means movable generally in a predetermined plane for severing at least a portion of the winding end turns from the stator windings. Means for mounting the stator includes means for positioning the end face generally adjacent the predetermined plane and also means for supporting the winding end turns portion adjacent the end face and the plane upon the severance of the winding end turns portion in response to the movement of the severing means into severing engagement therewith.A method for severing the end turns from the stator winding, a method of mounting the stator having end turns adapted to be severed, and means for mounting a stator in apparatus for severing end turns from windings of the stator are also disclosed.

Abstract: An expanded scale timer has means adapted to be driven for indicating the operating time of the timer, and a pair of means are conjointly and relatively movable for respectively driving the indicating means at different predetermined speeds. Means is provided for effecting actuation of the driving means conjointly to drive the indicating means through one of the driving means at one of the speeds and for effecting actuation of the other of the driving means relative to the one driving means to also drive the indicating means at another speed with the one driving means being overridden by the indicating means.

Abstract: A low voltage thermostatically energizable control system for a fuel burner having a fuel valve and operable from a direct current. The control system includes means for actuating the fuel valve to enable flow of a combustible fuel from the burner and means for spark igniting the fuel emitted from the burner. Means for detecting a flame is disposed near the burner, and the impedance between the detecting means and a point of reference potential is greater when no flame is present at the burner and is lower when a flame is present at the burner. A semiconductor device is coupled to the detecting means for conducting current only when the impedance between the detecting means and the point of reference potential is lower thereby to indicate the presence of a flame, and means is responsive to the current conducted by the semiconductor device for disabling the spark igniting means.

Abstract: A control system for controlling a condition, such as temperature, to maintain that condition in a generally enclosed space near a selected condition value. The system has a condition responsive impedance in series with a selectable impedance across a regulated voltage source to provide a voltage divider network, the output of which reflects the instantaneous condition of the environmental space relative to a selected condition therefor. This output is supplied to a Schmitt trigger circuit having hysteresis characteristics sufficient to provide a stable operating mode for the control system, and the Schmitt trigger circuit output controls a means for changing the condition of the enclosed space. A manual mode selecting switch may be provided for inserting any of several different impedances in the series combination, and a timer may be provided to automatically switch between different impedances in the series combination as determined by elapsed time with respect to application of power to the circuit.

Abstract: A control for supplying not more than one complete cycle of an alternating current upon command. The circuit has a plurality of gate controlled switching devices and a command switch. An energy storage device has one of the switching devices connected in the circuit for conducting a short time after the beginning of each current excursion of a specific polarity, and another of the switching devices is connected in series between a power source and a load for supplying energy to the load when gated. A third switching device is adapted to conduct, when gated, for depleting energy from the storage device only when the command switch so indicates. Conduction of the third switching device gates the other switching device and occurs only during current excursions of the desired polarity when the one switching device is non-conducting.

Abstract: A thermal actuator has means for containing a vaporizable liquid and means for vaporizing the liquid. Means is provided for supplying only a portion of the liquid to the vaporizing means to affect vaporization thereof and for subjecting the remaining liquid in the containing means to the vapor established upon vaporization of the liquid portion by the vaporizing means. A method of driving a thermal actuator and an actuating system including a thermal actuator are also disclosed.

Abstract: An electrical switch having a plurality of means adapted to be movable generally sequentially for switching power through the electrical switch. A plurality of means are adapted to be conjointly and relatively movable disposed in cascaded articulated relation between the switching means at least some of the movable means being conjointly movable relative to at least some of the others thereof for effecting the sequential operation of the switching means. Methods and a system for generally effecting sequential operation of the switching means are also disclosed.