Abstract: A heat exchanger having a plurality of spaced apart tubes loosely penetrating aligned oversized holes in two spaced apart tube sheets; a shell around the tube sheets; each tube sheet being secured against inward displacement axial to the tubes by contact with stop means on the shell; each tube sheet being barred against outward displacement axial to the tubes by keys mechanically engaging the tube sheet and shell so that upon release of the keys they no longer bar removal of the tube sheet from the shell; a solid binder joining and sealing the tubes to the tube sheet and joining and sealing the tube sheet to the shell, with said solid binder having substantial compressive, tensile and shear strength, and being convertible by heat at a sufficiently high temperature to a physical state in which it has much lower compressive, tensile and shear strength; a conduit to deliver a heat exchange fluid around the tubes inside of the shell between the tube sheets; and a conduit to deliver a liquid feed stream into a fee

Abstract: This invention is concerned with devices for controlling movement of small animals, of the kind commonly known as "Cat Ports". The device is activated by an operating magnet worn by the small animal, which when the animal moves to pass through the device, closes a reed switch. The reed switch is adjustably pre-biased by a positionally adjustable permanent magnet, to afford the reed switch with a desired sensitivity, and a control circuit includes a re-setting coil to return the reed switch to its open position after a predetermined time interval. The device may readily be modified to control movement of animals in either, or both directions, to and from a designated area.

Abstract: A method of making leaf springs from fibre reinforced resin composite material, wherein a resin impregnated fibre assembly of a number of individual springs adjacent one another is moulded and treated to cure the resin and then cut into individual springs. The assembly is formed with depressions in the surface thereof along the lines where it is to be cut so the surface fibres remain undisplaced by the moulding process and hence undisturbed by cutting. The invention also provides a mould for treatment of the assembly of resin impregnated fibres including elements which form the surface depressions therein.

Abstract: A composite strip is formed, during a folding step, from a continuous cover strip folded around a continuous, multi-ply inner strip. The cover strip has longitudinally spaced transverse slits therein and is tensioned during the folding step. A sharp, neat fold is obtained without transversely tearing the cover strip.

Abstract: Returnable glass bottles, particularly beverage bottles, having a natural glass surface, unmodified by a hot end process coating, having a quick curing thin coating of an amino functional polydimethylsiloxane, which does not visually change the appearance of the bottles applied to the exterior surface to increase lubricity and scratch resistance to said bottles. The coating is removable when the bottles are washed with an aqueous caustic solution. A new one-trip coating can then be applied.

Abstract: This apparatus is for use in measuring a weight, or force, and it is particularly useful as a scale. The apparatus includes a single vibrating wire and wire supports that rigidly clamp the two ends of the wire. A weight to be measured is applied to the wire in substantially the direction of its length, and the applied weight changes the tension in the wire. The apparatus includes a wire drive circuit that causes the wire to vibrate at essentially its natural resonant frequency. The frequency varies as a known cubic equation with respect to the applied weight, and a computer, operating in accordance with the equation, converts the measured frequency to a weight signal. The apparatus further includes vibration dampers and isolators for reducing the effects of sympathetic vibrations and of externally induced vibrations, and means to correct for external influences such as disturbing frequencies and ambient temperature.

Abstract: A method for simultaneously producing two continuous cigarette rods is described.The main feature of this method is to comprise two simultaneous successions of stages, the first for forming two equal strips of paper starting from a single continuous web, and the second for forming two substantially uniform and equal fillers of shredded tobacco starting from a single inlet hopper.

Abstract: There are described compounds of formula I, ##STR1## in which an adjacent pair of R.sub.5, R.sub.6, R.sub.7 and R.sub.8 form a chain --CZC(G.sub.1).dbd.(G.sub.2)--Z--,R.sub.4, R.sub.9 and the remainder of R.sub.5, R.sub.6, R.sub.7 and R.sub.8, which may be the same or different, each represent hydrogen, alkyl, halogen, alkenyl, --NO.sub.2, --NR.sub.1 R.sub.2, --OR.sub.3, --S(O).sub.n R.sub.3 ; or alkyl substituted by hydroxy, amino, alkoxy or carbonyl oxygen,n is 0, 1 or 2,R.sub.1 and R.sub.2, which may be the same or different, each represent hydrogen, alkyl, --CONHR.sub.3, phenyl or phenyl substituted by alkyl or halogen, or R.sub.1 and R.sub.2 together with the nitrogen atom to which they are attached form a 5 or 6 membered heterocyclic ring,R.sub.3 represents hydrogen, alkyl, alkenyl or phenyl,one of G.sub.1 and G.sub.

Abstract: The invention relates to a process for producing ready-to-use slats from semifinished slat portions for a slatted Venetian blind having vertically directed slats. In connection with the process, the slat portions are in each case cut at their free lower end to the length corresponding to the installation height, plus an extra length that takes into account a wrap-over portion. The wrap-over portion of a slat is in each case folded over at a bending edge predetermined by the use length. The lower end part of a slat is provided, in the vicinity of the wrap-over portion, with a system of perforations consisting of at least two holes for receiving retaining pins of a retaining means. The retaining pins are passed through the holes and locked.

Abstract: This disclosure relates to an aircooled heat exchanger including first and second sets of tubes that carry a fluid to be cooled. One end of each tube is connected to an inlet header and the other end is connected to an outlet header. Each tube includes first and second longitudinal portions which are joined or connected by an intermediate bent portion. The tubes are arranged in the flow path of a cooling air flow. The first portions of the first set of tubes are located upstream, with respect to the direction of air flow, relative to the second portions of the first set and relative to the first portions of the second set, and the second portions of the second set are located upstream relative to the first portions of the second set and to the second portions of the first set. This offset relation of portions of the tubes substantially equalizes the heat exchange with the air.

Abstract: A spray dispenser for a container of a fluid under pressure, having a schrader type discharge valve; consists of a handpiece removably secured on the container and having a spray discharge nozzle in tubular connection with the valve, a movable trigger mounted on the handpiece and connected to the valve so that the trigger is operable to open the valve against the influence of a spring forming part of the valve, and an interlock lever fulcrumed on the handpiece, which is resiliently influenced to obstruct movement of the trigger but is hand-releasable to permit such movement.

Abstract: Apparatus for applying a coating to one of two walls forming a narrow vertical elongated space comprising a vertical guide track supporting a vertically displaceable carriage thereon adapted to removably fit in the said narrow vertical elongated space; a power driven system for vertically displacing the carriage; and a system supported by the guide track for releasably securing the guide track against movement lateral to the two walls and sideways in the narrow vertical elongated space.

Abstract: An electrocoating apparatus located totally above a bath of electrolytic liquid and comprising a depletable anode roll having an outer layer of coating metal. Another roll is axially parallel to and vertically spaced from the anode roll. A closed loop of electrically insulative, porous mesh material extends around a portion of the peripheral surface of each roll to form the closed loop. A strip of metal is wrapped around a portion of the anode roll, with the porous mesh interposed between the strip's inner surface and the anode roll's peripheral surface. There is an upstream nip between the strip and the anode roll. The two rolls and the mesh loop are rotated, and the metal strip is advanced in a downstream direction, all at the same speed. Electrolytic liquid is introduced at the upstream nip and is retained between the anode roll and that part of the strip which is wrapped around the anode roll. Metal is coated on the inner surface of the strip, and the anode roll undergoes depletion.

Abstract: This disclosure relates to a flue damper control including an automatic control and a manual override for use in the event of failure of certain parts. The control includes a first lever means connected to the damper for opening and closing the damper. An electric solenoid is connected in circuit with a furnace thermostat, and the solenoid is coupled by spring means to the first lever means. In automatic operation, when the thermostat calls for heat, the solenoid armature moves, and the first lever means is operated by the spring means coupling to move the damper to the open position. A return spring moves the damper to the closed position when the thermostat no longer calls for heat. The control further includes a first switch connected in circuit with a fuel control valve, which is actuated by the first switch means as it opens the damper.

Abstract: The present invention relates to a blade section for rotating wings of an aircraft comprising, between the leading edge and the trailing edge, a convex lower surface and an upper surface which is convex over the greater part of its length, but concave near the trailing edge. According to the invention, the upper surface of the section comprises a region of small extent, close to the leading edge but not contiguous thereto, in which the curvature is substantially constant. The invention is applicable to the improvement of the performances in maneuvering flight, while hovering and in advance flight of the aircraft.

Abstract: A method and device for replacing a first, empty reel of strip material with a second, new reel in which the strips of the two reels are positioned over one another and partly cut thereby forming on them coincident lines of perforations or weakening, the strip from the empty reel then being broken along the associated partly cut line and the remaining part of the strip from the empty reel being connected to the other strip, the part of which disposed downstream from the associated line of cut then being cut off after the said connection between the strips.

Abstract: There is disclosed a shrimp processing machine of a type which includes a plurality of processing stations. One of the processing stations is a cutting station having a rotary blade for cutting the shrimp lengthwise. The machine also includes a carrier for gripping the shrimp and transferring the shrimp seriatim through the processing stations. The carrier includes a plurality of clamps for gripping the shrimp, wherein each clamp has a pair of spaced apart opposed structures defining an elongate space therebetween and a backup or intervening structure arranged to be received within the elongate space for coacting with the opposed structures to grip the shrimp. The intervening structures include an elongate slot arranged to be adjacent the shrimp for allowing the rotary blade to enter the slot through the shrimp for cutting the shrimp entirely therethrough.

Abstract: Contraceptive method comprises maintaining in the genital tract of a female mammal a pyrazolone derivative in a concentration effective to inhibit the fertilization of ova. In addition to effectively inhibiting the enzymes or other sperm components necessary for conception, the compounds used in the method of the invention are advantageous in having low toxic, caustic or irritating properties, so that the contraceptive compositions are suitable for long-term use without adverse side-effects.

Abstract: The present invention provides an inhalation device for use with a pressurized container having an outlet valve mechanism and from which material may be discharged by depression of a portion of the valve mechanism thereof, which device comprises a chamber for receiving said container; actuating means adapted to bear on the valve mechanism of the container; and first and second biasing means both adapted to bias the container towards the actuating means, said first and second biasing means each being of insufficient force alone to depress the portion of the valve mechanism of the container but together being of sufficient force to do so, said second biasing means being restrained in a position in which it does not bear on the container and releasable on inhalation through the device to a position in which it does bear on the container.

Abstract: A novel pre-quench zone is provided between the soak section and the water quench section of a continuous annealing line. The pre-quench section has multiple passes, and each pass has gas jet cooling tubes and heaters disposed along the path of movement of the strip. By selective operation of the gas jet cooling tubes or the heaters or both, the pre-quench zone provides a wide range of cooling capabilities and cooling rates so as to achieve a quench temperature ranging from 455.degree. C. to 955.degree. C. (850.degree.-1750.degree. F.) using either light or heavy gauge strip and without changing the normal line speed.