Abstract: A handle for a pan or lid. At least one spring is provided on the handle for holding the handle body to either the lid or the pan. The spring is received in a groove formed in the handle body and is in the form of a leaf spring having a bent over portion forming a hook. A cross-piece is provided and is secured to either the pan or the lid. The back side of the hook is braced against a shoulder formed on the handle body and the hook portion is urged into resilient engagement with the cross-piece to hold the handle body onto the pan or lid.

Abstract: A method and apparatus for selectively detecting the presence and concentration of a constituent in a gas sample, such as for example the presence of the vapors emitted by explosives and drugs in the atmosphere. A sample flow is drawn through a switching device into a detector and the output of the detector is correlated with the operation of the switching device. The switching device is actuated at periodic intervals between first and second conditions. In the first condition the switching device interrupts the flow of the constituent of interest to the detector while allowing the remainder of the sample to pass into the detector. In the second condition all the gas sample passes into the detector. The changes in detector output result from the presence of the constituent and the magnitude of the changes indicate the concentration of the constituent in the gas sample.

Abstract: Construction for a ball bearing retainer. There is provided a ball bearing retainer comprising an annulus having a plurality of circumferentially spaced ball receiving openings and one or more ball retaining fins extending radially from said retainer, arranged circumferentially therearound and positioned either tangent to, or for minor intersection with, the ball receiving openings. With balls in place in said openings, the outer ends of said fins are then displaced axially of said annulus toward said balls for retaining them in place. Such displacing of said fins may be accomplished by a single circumferentially applied rolling operation or a single press operation. By appropriate modification of the design, one, two, three or four such fins in varying sizes and arrangements may be used.

Abstract: A cap for receptacles provided with an inside stopper, wherein the inside of the side-wall of the cap is threaded so as to fit on the threaded side-wall of the opening of the receptacle and the inside stopper is provided with a side-wall whose outside diameter is equal to or slightly greater than the inside diameter of the opening of the receptacle and is provided with a flange on the upper end of said side-wall and having an outside diameter smaller than the inside diameter of the cap. The inside stopper is securely attached to the cap so as to be free from slipping out therefrom.

Abstract: A hot air andiron for use in a fireplace instead of a regular andiron or grate. The hot air andiron comprises a C-shaped section fabricated from a pipe of substantial diameter. The C-shaped section has substantially parallel leg portions, and an inlet header is connected to one leg portion adjacent the free end thereof for supplying air into and through the C-shaped section. The header has a fan associated with the inlet end thereof, and the other leg portion of the C-shaped section has a discharge opening at the free end thereof for discharge of heated air. The C-shaped section is supported on legs which space it several inches above the floor. The parallel leg portions are positioned to permit logs to be supported directly thereon and extend transversely therebetween, and log holding elements are fixed to the leg portions and project upwardly therefrom for assisting in holding the logs on the leg portions.

Abstract: A circuit arrangement for the ungrounded transmission of signals through testing points in communication facilities with the aid of high-frequency oscillations. The high-frequency oscillations are controlled on one side of the testing point and are rectified on the other side of the testing point. The rectified signals are utilized to reproduce the signals again. An oscillator is operated in dependency of the signal polarity by the signals without the requirement of external sources of power.

Abstract: A door operator for moving a door between a closed position wherein the door extends substantially vertically and closes a door opening and an open position wherein the door extends substantially horizontally and is disposed adjacent the upper edge of the door opening. The operator includes an elongated guide which extends in a substantially horizontal direction away from the door opening. A carriage is engaged with the guide and is movable therealong. A drawbar assembly is connected between the carriage and the door, and a motor is drivingly interconnected to the carriage for moving same along the guide to result in movement of the door between the open and closed positions. The drawbar assembly includes a first arm member hingedly connected to the carriage at a first pivot axis, and a second arm member hingedly connected to the door at a second pivot axis which is substantially parallel to but spaced from the first pivot axis.

Abstract: An electrostatic precipitator having a rotor supported for rotation within a housing containing inlet and outlet openings adjacent the opposite ends thereof. The rotor is formed by a plurality of ringlike collector plates which are fixedly connected in parallel but axially spaced relationship. One end of the rotor, which is closed by a support plate, is disposed adjacent the outlet opening. The collector plates are alternately of opposite charge to create electrostatic fields therebetween to remove ionized particles from the gas which flows radially outwardly between the plates during rotation of the rotor. The collector plates have aligned central openings which decrease in diameter towards the closed end of the rotor. The outside diameter of the collector plates also decrease in diameter towards the closed end of the rotor, whereby the collector plates all substantially equal surface areas acted upon by the electrostatic field.

Abstract: A lateral thrust control unit for watercrafts having a pair of tunnels which are directed transversely to the longitudinal axis thereof. Each of the tunnels extend from one side of the watercraft to the oppositely positioned side of the watercraft and have at least one drivable propeller therein. At least one pressure-compensating channel is provided near the tunnels and connects at least one of the zones of differing pressure fields created on the sidewalls of the watercraft as the watercraft moves simultaneously longitudinally and laterally to the pressure field of different potential to equalize the pressure differential therebetween and to reduce the resistance to the lateral movement. The pressure-compensating channels do not have any propulsion devices therein.

Abstract: An apparatus to prevent after-burning, after the ignition key switch is turned off, in an internal combustion engine which is being warmed up, in which condition the choke valve is closed and the throttle valve is opened to a greater extent than during normal idling. The apparatus includes a pressure responsive actuator which, when activated, causes opening of the choke valve and/or closing of the throttle valve. The actuator is controlled by a switching valve which permits the actuator to be interconnected to either the open air or the air intake manifold at a location downstream of the throttle valve. When the igniton key switch is moved into an off or open position, the switching valve connects the actuator to the intake manifold to thereby actuate the actuator so that one or both of the throttle and control valves are appropriately moved.

Abstract: Device for diminishing tip vortices in an aircraft. For the purpose of diminishing the tip vortices generated by aircraft there are provided retractable foils at or near the airfoil, as wing, tips in question and projecting upwardly and/or downwardly therefrom. The operation of the retractable foils is satisfactory if such foils are parallel to the centerline of the aircraft but it is preferable if such foils are angled slightly with respect thereto, such as if the leading edge of the upper foil is angled approximately 10.degree. inwardly toward the fuselage of the aircraft and the bottom foil is oppositely angled also approximately 10.degree.. The retractable foils, in addition to diminishing wing tip vortices, also when used on wing tips improve the rate of climb of an aircraft at a given engine setting and appear to diminish the area over which the major amounts of noise generated by the aircraft will be dispersed.

Abstract: A measuring tool for checking frameworks, comprising a fixed part intended to be suspended between two opposing sides of the framework, and a movable part displaceable in or on the fixed portion. Both parts have longitudinal scales readable against indexes, variations in the distance between the sides of the framework being reflected on the scale of the fixed part which has graduations twice as large as those on the scale of the movable part. Graduations of the scales are so arranged that when the movable part is adjusted with its scale showing against its index the same value as that read on the scale of the fixed portion against its index, the movable portion will always assume the same position in relation to the centerline between the sides of the framework.

Abstract: An aqueous anionic polyurethane emulsion is prepared by reacting an isocyanate-terminated urethane prepolymer with an excess of a polyalkylene polyamine thereby to form a polyurethane-urea-polyamine, reacting a portion of the free amino groups of said polyurethane-urea-polyamine with a blocked polyisocyanate having a single free isocyanate group, reacting the resulting product with a cyclic dicarboxylic acid anhydride, and mixing the resulting product with an aqueous solution of a basic substance.

Abstract: A patterning system for use with a hand-operated flat-bed knitting machine of the type wherein a carriage is mounted for reciprocative sliding movement along the needle bed, comprising a program providing means for providing a unit number of signals representative of data for needle selection for a course of knitting, a pair of needle selecting means mounted on said carriage at its opposite end portions for engagement with needles on the needle bed to select them in accordance with the pattern program, switch means for detecting the sliding direction of the carriage, control circuit means for controlling the needle selecting means so as to alternatively operate in response to the detection of the sliding direction of the carriage, thereby to carry out the needle selection in order to obtain the pattern on a knitted fabric according to the pattern program provided by the program providing means, without getting into confusion upon reversing of the sliding direction of the carriage.

Abstract: A spirally-wound membrane-type separator module capable of reversing the direction of liquid flow comprises an outer cylindrical pressure vessel, a spirally-wound membrane element disposed within said outer vessel and extending in the axial direction thereof, and a plurality of brine seals disposed in the annular space defined between the outer periphery of said membrane element and the inner periphery of said outer vessel, each brine seal including a ring-like portion fitted on the outer periphery of said element and a cup-shaped flange portion sealingly engaging the inner periphery of said outer vessel, said brine seals being arranged close to one another in the direction of axis of the element with the flange portions of the brine seals being directed in opposite directions.

Abstract: A latching assembly for latching the swingable door associated with a cap as mounted over the bed of a pickup truck. The latching assembly is activated by a manually rotatable handle mounted centrally of the lower edge of the door. The latching assembly includes a pair of elongated rigid rods which project outwardly toward the opposite sides of the door and have latching bolts mounted on the free ends thereof, which bolts are disposed for latching engagement with the adjacent side jams. A removable fastening element, such as a screw, coacts between each bolt and the respective rod for permitting the bolt to function either as a deadbolt or as a spring-bolt. When the fastening element is present, the bolt is rigidly secured to the rod and functions as a deadbolt so that the handle must be manually rotated to move the bolts during both opening and closing of the door.

Abstract: A stable bleaching composition containing, as essential ingredients, an inorganic peroxide, an activating agent for said inorganic peroxide and potassium carbonate.

Abstract: Aqueous cationic polyurethane emulsions are prepared by reacting an isocyanate-terminated urethane prepolymer with an excess of a polyalkylene polyamine to form a polyurethane-urea-polyamine, and then partially reacting the free amino groups in said product with a blocked polyisocyanate having a single free isocyanate group, followed by mixing with an aqueous solution of an acid.

Abstract: A new and distinct member of the iridaceae family characterized by a unique combination of the characteristics of the Gladiolus and the Acidanthera murielae, namely a flower of the Gladiolus, the drooping characteristic of the flower Acidanthera murielae and the fragrance of the Acidanthera murielae.

Abstract: A new and distinct member of the iridaceae family characterized by a unique combination of the characteristics of the Gladiolus and the Acidanthera murielae, namely a flower of the Gladiolus, the drooping characteristic of the flower of the Acidanthera, and the fragrance of the Acidanthera murielae.