Abstract: A motor vehicle fluid power circuit is provided with a constant displacement pump, a control valve, an open center steering valve, and a brake booster with a spring type ratio changer. The brake booster includes an input rod which is connected to a brake pedal of the vehicle and an output rod which is connected to the brake master cylinder of the vehicle. One predetermined ratio of input rod movement to output rod movement is established under normal operating conditions, and a one-to-one ratio is established under emergency conditions when sufficient pressure from the pump is not available for the brake booster.

Abstract: An integrated suspension ceiling and recessed lighting fixture system is disclosed in which a fixture is supported primarily on arched bridging members which extend between parallel runs of the grid of the suspension ceiling. The bridging members lock at their ends in the runs and maintain a predetermined spacing between the runs thus permitting relatively long uninterrupted fixtures to be installed in the suspension ceiling. The bridging members also support a continuous channel or raceway which permits the fixture to be wired as a unit regardless of its total length. A reflector is supported by flanges of the inverted tees constituting the runs along the sides of the fixture so separate framing is not required. With the invention recessed lighting fixtures of substantially any desired length may be installed in a suspension ceiling system.

Abstract: In a hermetically-sealed motor compressor having a vertically oriented crankshaft into which oil is centrifugally pumped from a sump, the oil pumping tube extending into the sump is cast as an integral part of the lower end ring of the rotor, providing a unitary rotor end ring and oil tube.

Abstract: Disclosed is a flywheel assembly for recording and or reproducing devices which is produced by molding and sintering a mixture consisting principally of iron and graphite powders and, if necessary, a sulfur powder.

Abstract: An electrically driven actuator having a rotary output shaft for actuating a valve apparatus is disclosed. An electric motor is employed to rotationally drive a pair of parallel threaded shafts symmetrically disposed with respect to the rotary shaft in a plane extending transversely to the plane of the axis of rotation of the rotary shaft. A transverse arm rotationally fixed to the rotary shaft slidably engages feed nuts carried by the threaded shafts for axial movement therealong upon shaft rotation, and the transverse arm is moved in a pivotal, swinging movement sweeping the axial paths of the feed nuts to provide rotation of the rotary output shaft. The provision of a pair of transverse arms extending from axially spaced positions along the rotary shaft on each side of the plane of the threaded shafts is also disclosed. In a modified actuator structure, the use of a worm wheel rotationally fixed to the rotary shaft and directly engaging the threaded shafts is shown.

Abstract: The invention relates to induction heating for cooking. Solid state reciprocal power switches are used to excite a resonant power output circuit including an induction coil to be inductively coupled to a cooking utensil. A first control signal which is a function of the Q of the coil, the direct current voltage applied to the power switches and the frequency of operation of the power switches is used to offset the power circuit from oscillating at resonance in order to control the power output. A solid state differential circuit is used responsive to a second control signal establishing the level of power desired and to the first control signal for regulation about the selected power level. The same differential circuit is responsive to a third control signal to insure low starting power or in case of a failure of the power line. Minimum power output is provided at the lower end of the ultrasonic frequency spectrum without entering the audible frequency range.

Abstract: An oven door assembly for hinge mounting on an oven frame, the door having a glass-sealed window aperture and a shutter manually positionable between an open position permitting view of the oven contents through the window and a closed position preventing thermal radiation from the oven through the window and view of the oven contents. Shutter position indicator means governed by the movement of the shutter to and from its closed position cooperates with sensor means on the oven frame to provide an interlock for the oven heating system such that the heating system is prevented from operating when either the shutter or door is not fully closed. The shutter is disposed within an air wash zone formed by spaced door panels in a manner which permits both sides of the shutter to be cooled by convective air flow to thereby minimize heat transfer to the outer panel of the door.

Abstract: A device in a domestic sewing machine for semiautomatic sewing of buttonholes which comprises a bank of cams for controlling lateral needle oscillation, needle position or base line, and work feed. The cams are manually set in two successive steps, each followed by sewing of one end of the buttonhole and then one side of the buttonhole. The cams, as well as a ratchet wheel, are fixed to a common shaft to enable the ratchet wheel to rotationally displace the cams and thereby effect a change in the sewing pattern from end stitching to side stitching after formation of a fixed number of end stitches.

Abstract: A transfer for a forging or forming machine is disclosed in which the transfer assembly is journaled for pivotal rotation about an axis midway between adjacent die stations. The transfer fingers are mounted to extend radially from the pivot axis to gripper portions at the distal end. The structure provides a minimum rotational moment of inertia and dynamic imbalance to permit the transfer to operate at higher speeds. An embodiment is disclosed in which a parallelogram type mechanism connects between adjacent transfer assemblies to permit transfer without turning of the workpiece to one station and transfer with turning of the workpiece at another die station. The transfer drive is arranged on the side of the machine remote from the operator's position to provide better operator access to the machine.

Abstract: A filter bag assembly for a vacuum cleaner is disclosed. The assembly includes an elongated, relatively rigid, hollow tube coupled at one end to the exhaust of a vacuum cleaner. The tube runs upwardly along the handle of the vacuum cleaner and is attached at its other end to a porous filter bag. The filter bag runs downwardly along the rigid tube and has an open end closed by a nonporous dirt-collecting bag. The tube, the porous bag, and the nonporous bag are encased in an envelope so that the nonporous bag is held in a collapsed or stored condition at the end of the filter bag during normal use of the cleaner. To empty the filter bag of its collected dirt, the envelope is opened to expose the nonporous bag and to permit the dirt in the filter bag to drop downwardly into the nonporous bag. The vacuum cleaner may be turned on and off a number of times to distend the bag and dislodge dirt from the filter bag during the emptying operation.

Abstract: A shearing tool for synthetic resin tubes, in which a lower jaw is connected to the leading end of an upper handle portion, a lower handle portion is pivoted to said lower jaw at its leading end, an opening is provided in forward portion of said upper handle portion extending therefrom to the leading end of said lower jaw, an arcuate tube receiving recess is provided in the upper surface of said lower jaw, said shearing blade is pivoted in an intermediate position of the length to said upper handle portion within said opening, said shearing blade is provided at the rear and lower end with an egaging pawl, a rocking bar having notches in the upper surface is pivoted at one end to the leading end of a lower handle portion, a slot is provided in the rear portion of said shearing blade, a connection link has at one end a pin freely received within said slot and is pivoted at the other end to an intermediate position of the length of said rocking bar, a spring is provided for urging said rocking bar against said e

Abstract: In a laminated magnetic core wherein an adhesive is utilized to secure laminations in a unitary structure, low core compressibility is obtained by restricting the distribution of adhesive so that regions of metal-to-metal contact which surround axial compression points are kept completely free of adhesive. The core is formed by placing the laminations in assembled relation and applying a limited amount of the adhesive in a liquid state to selected core surface areas. Isolated interlaminar regions which lie intermediate of the axial compression regions are filled by the adhesive which flows therein by capillary action. The quantity of adhesive applied is carefully controlled so that capillary migration is contained wholly within the isolated bonding regions.

Abstract: A disclosed refrigeration cabinet has an integrated construction of sheet material and insulating foam which substantially eliminates the need for mechanical fasteners and welding, minimizes assembly operations, and permits the use of prefinished sheet panels. An outer cabinet shell preferably includes a prefinished sheet wrapped into a rectangular tube. The shell tube is reinforced at one end by a perimeter frame and at the other end by a thermal breaker collar. After the shell tube and frame are assembled, a liner is positioned in the tube and the breaker collar is installed. Rigid insulating foam is then foamed in place between the shell and liner to produce a sandwich construction in which the form secures and reinforces both the shell and the liner.

Abstract: A reflex type speaker enclosure integrally formed of ceramic material having a shell of hemispheroidal configuration and having an inturned speaker mounting flange adjacent the equatorial plane. The enclosure is adapted to be suspended by structure extending through an aperture in its apex. The flange forms a central, relatively large speaker aperture, and a plurality of circumferentially spaced, relatively small acoustic ports intermediate the shell and aperture. The radially inner edge of the flange is notched at the speaker aperture to permit placement of a speaker assembly into the interior of the hemispheroidal shell and allow insertion of suitable fasteners therethrough to secure the speaker assembly to the inwardly facing side of the flange portion.

Abstract: A two-piece end closure for a container includes a stationary base and a recloseable cap. The base includes a through opening for dispensing the contents of the container and an annular trough extending substantially 360.degree. around the opening. The cap includes a cover portion extending over the opening, an elongated attachment leg frictionally received in the trough, and a flexible connecting wall extending between the cover portion and the lug.

Abstract: A bed in a sewing machine having a fixed free arm and auxiliary bed plate means pivotally supported on the free arm between a retracted position to provide minimum girth around the free arm and an extended position which augments the work supporting area of the free arm. Releasable locking means maintain the auxiliary bed means in either of its positions and biasing means urges the auxiliary bed means from the retracted position towards the extended position.

Abstract: A coupling for anchoring a pool cover to a pool surround, the coupling having a body portion embedded in the pool surround, and a locking member to be inserted in a slot in the body and on partial rotation is locked therein.

Abstract: A quick-mounting combined overhead guard and weatherproof cab for the body of an industrial lift truck comprises a tubular frame with four roof members and four upright corner members. The roof is closed with steel plating. The front and rear upright corner members at each side form jamb members for cab doors which close against the exterior sides of the frame members. The front and rear faces of the cab and the door bottoms are provided with sealing means cooperative with the truck body. A roof window is provided with an array of cut-out window lights in the steel plating, the spaces between the lights comprising bars that remain integral with the plating. The window is transparently covered by openable cover means.

Abstract: An ileostomy pouch and mounting device for the pouch are disclosed. The pouch comprises a bag having a drain opening at one end and a stoma-receiving opening adjacent its other end. An O-ring is sealed to the periphery of the stoma-receiving opening and has an integrally molded skirt flaring radially from the O-ring. A mounting ring is provided for the pouch and has an annular body-engaging face and an annular peripheral groove extending radially inwardly toward the axis of the ring. The O-ring is received in the groove entirely around the mounting ring to securely fasten the bag to the mounting ring.

Abstract: A safety interlock for a door of an automatic washing machine is disclosed. The interlock securely latches the door during a spin cycle to prevent the operator of the machine from opening the door and catching his hand in the rotating motor driven drum. The interlock operates during operation of the motor and during a time delay period following de-energization of the motor to permit the drum to coast to a safe speed or to a stop. Included in the interlock is a switch member operable upon closure of the door to at least partially complete a circuit between the motor and a bimetallic element. The remainder of the circuit is completed by a timer driven switch, and when the circuit is completed the bimetallic element is heated to move a latch on the frame of the appliance into locking engagement with a latch on the door.