Abstract: Headaches may be relieved by separating the middle and forefinger of each hand and simultaneously applying pressure to the back of the hand side of the webs of skin extending between the bases of the middle and forefingers on each hand. An apparatus for performing the method includes a plate 10 for receiving both hands of the person suffering the headache and which is provided with a pair of spaced parallel arms 24 pivoted to the plate 10 such that corresponding ends 26 overlie the plate. Skin web engaging pads 30 are located on the ends 26.

Abstract: The problem of stabilizing operation of a load division control (74) is resolved using a phase angle counter circuit (90) which calculates phase angle insensitive to frequency changes of the output voltage waveform. The phase angle counter circuit (90) includes a series of counters (94, 96, 100 and 102) for calculating phase angle.

Abstract: Flat bed thermal printing apparatus adapted to print information on to an elongate substrate, or on to products disposed upon the substrate, at a printing area within the apparatus, the said substrate being movable through the apparatus in a step by step movement, with a stop for printing between each step, along a path which causes the substrate to be disposed in a substantially flat position as the substrate is stopped at the printing area after each step wherein the apparatus comprises a printing head provided with a multiplicity of individually energizable dot type thermal elements, means to move the printing head relative to the substrate while the substrate is stationary at the printing area between its stepwise movements through the apparatus with the substrate in its substantially flat disposition, means selectively to energize the said printing elements during movement of the printing head to effect printing and means positively to hold the substrate in position at the printing area during printing.

Abstract: An accumulating conveyor includes a frame having generally parallel sides with a plurality of load-carrying rollers rotatably mounted between the frame sides. A plurality of lifting rollers are rotatably mounted between the frame sides beneath the load-carrying rollers. A drive belt extends between the load-carrying rollers and the lifting rollers for rotating the load-carrying rollers in response to the lifting rollers lifting the belt into engagement with the load-carrying rollers. A plurality of sensing roller assemblies are mounted on selected, spaced load-carrying rollers. The sensing roller assemblies each include a carriage pivotally mounted on the axis of a load-carrying roller, a sensing roller mounted on the carriage on one side of the axis and a counterbalance roller heavier than the sensing roller mounted on the opposite side of the axis. The counterbalance roller is effective to bias the sensing roller into the path of movement of articles moving along the conveyor.

Abstract: A gravure printing press includes a scavenger located adjacent a pinch formed by an impression roller and a printing cylinder. The scavenger captures air drawn to the printing clinder which has become laden with solvent from ink on an outer surface of the cylinder, to minimize the dispersion of the solvent laden air to the area surrounding the press.

Abstract: The problem of sealing a communication bore (56) in a port plate (40) is solved with a self-sealing transfer tube assembly (52). The transfer tube assembly (52) includes a coupling element (64) which is received in a supply bore (60) which intersects the communication bore (56). A relatively small window (78) is provided in the coupling element to provide hydraulic communication between the transfer tube assembly (52) and the port plate porting area (48), while its solid side wall (68) otherwise seals the outer portion of the communication bore (56).

Abstract: The problem of providing a high speed torque measuring apparatus (10) is solved by first and second coaxial members (18, 20) having an elastic coupling (25) which interconnects the coaxial members for allowing relative angular displacement in proportion to the magnitude of a torque load applied to one of the members. First and second concentric apertures (32 and 34a, 34b) are provided in the first and second coaxial members, respectively, for movement into overlapping relationship in response to the relative angular displacement of the coaxial members. A light source (40) is provided on one side of the coaxial members for transmitting light through the aperture in both members when in their overlapping relationship whereby the transmitted light intensity is in proportion to the amount of overlap between the apertures. A light intensity detecting device (42) is provided for receiving the light transmitted through the overlapped apertures.

Abstract: The problem of reducing harmonic content of AC bus voltage in a power system (10) is minimized using a controller (30) for a PWM inverter (38). The controller (30) develops a duty cycle command on a line (40) for controlling operation of the PWM inverter (38). The controller (30) develops the duty cycle command to maintain the PWM inverter output voltage at a desired level. This duty cycle command is modulated in accordance with the harmonic content evident on a DC bus (34) which supplies power to the PWM inverter (38).

Abstract: The possibility of the end 26 of a boom 20 of a vehicle mounted crane being moved downwardly into engagement with part of the crane or the vehicle on which it is mounted and causing damage thereto during elevation of a mast 18 for the crane from a stowed position (FIG. 2) to an elevated position (FIG. 1) is avoided in a construction wherein the mast 18 is formed of a parallelogram linkage including rigid links 60 and cylinders 72 which assure that the attitude of the boom 20 relative to a base 10 for the crane will not change during elevation of the mast 18.

Abstract: A level gauge is used on a tank containing a liquid. The gauge utilizes a displacer suspended on a support wire or tape which is wound on a storage wheel. The storage wheel is balanced by a counterweight. Any change in liquid level results in an imbalance which causes a servo motor to energize and rotate the wheel to bring the counterweight and displacer back into balance. The change in level is determined by counting the steps of motor operation. The changes in level are determined using the relationship between length and steps of motor operation. The level gauge is operable to continually correct calculation to compensate for changes in wire length per turn of the spool.

Abstract: A power vented direct vent system for a fuel-burning appliance wherein a power venter is associated with a vent pipe to create adequate draft for combustion. Outside air is supplied to the appliance for combustion and also communicates through a regulator with the vent pipe for addition to the flue gases. The draft regulator assures adequate draft and can be a barometric draft control. The power vented direct vent system is directly connected to the fuel-burning appliance with complete isolation of the combustion system from the space in which the appliance is located.

Abstract: The problems of modifying and/or fine tuning current limit in a voltage regulator are minimized using a programmable current limit. The programmable current limit provides for storage of multiple reference values in a processor memory to provide different rates of current limit control.

Abstract: A tire clad concrete log and method and apparatus for forming a tire clad concrete log. The method includes the steps of providing a plurality of used tires which are made into a form by placing them in sidewall-to-sidewall contact, providing a quantity of a waste ash which is mixed as a binder in a manner making a concrete material, and filling the form with the concrete material while also maintaining the used tires in sidewall-to-sidewall contact. The tire clad concrete log thus comprises a plurality of used tires disposed in sidewall-to-sidewall contact wherein a concrete material formed at least in part by waste ash is interlockingly disposed within the used tires.

Abstract: An article conveyor having a frame, a first conveyor with opposite sides for conveying articles in an first path, a wheel mounted to the frame for rotation relative thereto about a first axis and having an article engaging surface which advances articles as an incident of rotation of the wheel, structure for rotating the wheel about the first axis, and structure for selectively changing the orientation of the wheel and first axis between (a) a first position wherein the wheel advances articles engaged thereby in the first path and (b) a second position wherein the wheel advances articles engaged thereby in a second path that is transverse to the first path to thereby divert articles off of the first conveyor.

Abstract: A hydrostatic transmission having a housing with a sump and a pair of hydraulic displacement units interconnected by first and second fluid passages. A pair of bypass valves can be opened to place said first and second fluid passages in fluid communication. A recess, formed in the lower part of the housing, holds make-up oil and communicates with said first and second fluid passages when the bypass valves are opened. A passage extends upwardly from the housing recess and has its upper end normally sealed by seal means. A manually operable bypass rod extends lengthwise of the passage into the area of the housing recess and has structure associated therewith for causing opening of the bypass valves.

Abstract: Frostless type refrigerator/freezers having a plastic liner utilize a metal heat shield disposed between an evaporator and the liner. A defrost heater located below the evaporator is controllably energized to melt frost away from the evaporator. A metal clip of spring steel removably mounts a thermostat to the heat shield above the evaporator to sense the temperature above the evaporator to de-energize the heater when the frost is melted from the evaporator.