baber/WOPTO huggingface dataset:
Patent GB-1356114-A (GB)
Title: Method of and apparatus for heat transfer
IPC: F28F13/02
Filed: 1970-09-03
Abstract: 1356114 Heat exchangers J R LAGE 3 Dec 1971 [3 Sept 1970 21 Sept 1971] 42306/70 and 44031/71 Heading F4S  In a method of heat transfer between a fluid and a surface in contact with said fluid, the surface is arranged to form a boundary wall of a turbulence chamber for said fluid, said chamber having a fluid inlet comprising a nozzle for directing a jet of the liquid against the surface, and having also a fluid outlet; the resulting fluid flow in said chamber comprising a turbulent circulating flow pattern along a path in which the flow passes repeatedly over the surface and in which the fluid particles oscillate about said path. Such a chamber may be provided on one or both sides of said wall which may be domed or curved. Several such chambers interconnected in series or in parallel may be provided on the wall and pressurizing means for the medium may be provided between adjacent chambers. The nozzle apertures may comprise slits, or they may be round or square. The medium may be liquid or gaseous or it may be a paste, and it may be pressurized or under vacuum in said chamber. The surface may be finned or embossed to increase the heat transfer area. The chamber outlet may comprise a pipe 9 or it may comprise an annular gap (Fig. 2). Fig. 3 shows an arrangement on one side of a heat exchange wall 13, wherein a plurality of turbulence chambers 1 are formed in a supply chamber 15- having a heat-insulated wall 16. Fluid is supplied by jets 8 to the chambers 1 and in each chamber circulates over the surface in flow paths 12, these migrating towards the outlet 9.  Fig. 7 shows an arrangement in which turbulence chambers 21, 22 are provided respectively on opposite sides of a heat transfer wall 23 each chamber comprising an open-ended cell defined by walls 26. 33 are fins. The cells may be circular, square, or triangular in plan (Figs. 8-10).
Patent GB-1315387-A (GB)
Title: Optical apparatus for television film projection system
IPC: H04N5/253
Filed: 1970-09-04
Abstract: 1315387 Television RCA CORPORATION 4 Sept 1970 [11 Sept 1969] 42391/70 Heading H4F Telecine apparatus comprising a xenon flash lamp 19 for illuminating a moving film 11 so that an image of a frame thereof is projected on to the face 26 of a vidicon camera 27 requires that the image be correctly registered on the face 26 when the lamp is flashed. In the apparatus described, which ensures correct vertical registration of successive frames, and uses film having a reference position window 37 at the side of each frame, dichroic devices 24, 21 are inserted in the main path between lamp 19 and face 26 so that light from a tungsten lamp 28 (of a different colour from that provided by lamp 19) is passed between the devices coincident with the main path and thence to a photodetector 33. Only when a frame is correctly positioned, does light from lamp 28 pass through a corresponding window 37 so as to fall on the detector 33, which thereupon triggers the lamp 19. Also included between dichroics 21, 24 are a large aperture low quality condensing lens 22 and a high quality objective 23. If lamp 28 and detector 33 are interchanged, "cross talk" between the two light beams is found to occur, e.g. xenon light affects the detector and tungsten light gives some smearing of the image on face 26, due to imperfect action of the dichroic 24 and inability of the lens 22 to focus the tungsten light only on the side of the film containing the windows 37, and consequently, emphasis is laid on, and the claims directed to, the arrangment shown wherein the beams traverse the film 11 in opposite directions. Such an arrangement permits objective 23 to focus light from lamp 28 only on one side of the film and if the film also includes a sound track 38 it is also possible to produce a line image of lamp 28 for scanning thereof (via lens 23). The acceptance angle of detector 33 is limited to reduce the incidence of xenon light reflected from the film. Either or both the dichroics may be altered so as to transmit the tungsten light and reflect the xenon light, with a corresponding interchange of the lamp 19 and detector 34, or the tube 27 and lamp 28.
Patent GB-1355387-A (GB)
Title: Compositions containing stabilised phosphoric esters
IPC: C07F9/09
Filed: 1971-09-10
Abstract: 1355387 Stabilization of phosphoric acid esters CIBA-GEIGY AG 10 Sept 1971 [11 Sept 1970] 42409/71 Heading A5E A pesticidal composition comprises: (A) 5 to 99.95% of a pesticidal, phosphoric ester whch is a di(C 1 -C 3  alkyl)dihalogenovinyl phosphate, a di(C 1 -C 3  alkyl)dihalogeno-1-methyl vinyl phosphate or a tetrahalogeno(C 2 - or C 3 - alkyl)di(C 1 - or C 2 -alkyl) phosphate, and (B) as stabilising agent, 0.05 to 10%, calculated on the weight of the phoshoric ester, of at least one sulphur compound containing 5 to 99%, preferably at least 10%, by weight of sulphur and containing at least one divalent sulphur atom which is either (i) bonded, by one valence, to a sulphur, carbon, nitrogen or hydrogen atom or a metal capable of salt formation and, by the other valency, to a hydrogen, carbon, nitrogen or metal atom or, provided the sulphur atom is not bonded to hydrogen, an oxygen atom or (ii) bonded via both valences to a carbon, nitrogen or metal atom. The composition may also contain (C) up to 90% of one or more solvents for the phosphoric ester, and up to 50% of one or more inert adjuvants chosen from mineral adjuvants and organic adjuvants compatible with the phosphoric ester. Many sulphur compounds belonging to the following classes are disclosed: Sulphanes, mercaptans, sulphides, disulphides, heterocyclic compounds, thioic compounds, thiomides, dithiocarbamic esters, thiocarbamic esters, thiurams, isothicyanic esters thioureas, thiuranes, sulphenamides, sulphenic esters, thioketones and salts of some of the above. Optional ingredients are odorants, pigments and complementary stabilizers such as epoxidized compounds and azoic compounds.
Patent GB-1016770-A (GB)
Title: A protective coating material and the method of preparing the same
IPC: C04B28/26
Filed: 1963-10-29
Abstract: An aqueous coating composition solidifying by loss of moisture by evaporation contains, by weight of the total solids present, 55 to 68% powdered silica, 25 to 42% potassium silicate, 1 to 4% talc, and 1 to 7% nepheline syenite. The composition may be applied by brushing, spraying or dipping to steel.  It may subsequently be heated to 1800 DEG  F. to fuse it and dissolve oxides on the metal surface.  It may also be applied to paper to maintain the shape thereof after drying or to a combustible former which is burnt out after the coating has hardened.ALSO:An aqueous coating composition solidifying by loss of moisture by evaporation contains, by weight of the total solids present, 55 to 68% powdered silica, 25 to 42% potassium silicate, 1 to 4% talc. and 1 to 7% nepheline syenite. The composition may be applied by brushing, spraying or dipping to steel. It may subsequently be heated to 1800 DEG  F. to fuse it and dissolve oxides on the metal surface.  The coating then becomes glossy.  It may also be applied to paper to maintain the shape thereof after drying or to a combustible former which is burnt out after the coating has hardened.ALSO:An aqueous coating composition solidifying by loss of moisture by evaporation contains, by weight of the total solids present, 55-68% powdered silica, 25-42% potassium silicate, 1-4% talc, and 1-7% nepheline syenite.  The composition may be applied by brushing, spraying or dipping, to steel.  It may subsequently be heated to 1800  DEG F. to fuse it and dissolve oxides on the metal surface.  It may also be applied to paper to maintain the shape thereof after drying or to a combustible former which is burnt out after the coating has hardened.
Patent GB-1066128-A (GB)
Title: Push-pull transistorised amplifier
Inventor: CHATELON ANDRE EDOWARD JOSEPH
IPC: H03F3/30
Filed: 1965-10-08
Abstract: 1,066,128. Transistor amplifiers. INTERNATIONAL STANDARD ELECTRIC CORPORATION. Oct. 8, 1965 [Oct. 9, 1964]. No. 42755/65. Heading H3T. A push-pull amplifier comprises a complementary pair of emitter coupled transistors 1, 2, an identical pair of Zener diodes 3, 4 connected in series-aiding across the collectors of the transistors, a single power supply + V including a current limiting resistor 9 connected across the parallel connection of transistors and diodes, resistors 5-8 to bias and balance the transistors for Class B operation, means 11 to apply an input signal to the bases of the transistors, and means 10 to derive an output signal between the common points A, B of the diodes and transistors respectively. The Zeners operate in their breakdown condition. With zero input, both transistors are cut-off and zero output results. With an input other than zero, one transistor is cut-off and the other conducts, depending on the polarity of the input, and an output between A and B is produced of polarity dependent upon that of the input. Amplifiers according to the invention may be directly coupled, coupling point B of one stage to point E of the following stage.
Patent GB-874431-A (GB)
Title: Improvements in devices for the excitation of explosive substances
IPC: F42D1/05
Filed: 1959-12-16
Abstract: 874,431. Ammunition. SOC. D'EXPLOITATION DES MATERIELS HISPANO-SUIZA. Dec. 16, 1959 [Dec. 19, 1958], No. 42865/59. Class 9(1). A nuclear bomb comprises a hollow sphere 7 of fissionable material and a detonator in the form of a spherical envelope of explosive 8 enclosed by two concentric metal shells 9, 10, which are each connected by an insulated wire 13, 14 passing through a primer 11 and mass 12 to the self inductance coils 16, 17 of alternating voltage source 18. In operation, the generator 18 and coil 17 being connected, the circuit including the coil 16 and capacitor 9-10 oscillates and the molecules of the detonator 8 are acted upon by the electro-magnetic field corresponding to the oscillations, until the frequency of the oscillations becomes equal to one of the activation frequencies of the primary explosive 8, when each of said molecules is broken and produces an explosion, which is propagated in the primer and thereby produces a radial compression and chain fission reaction in the sphere 7. The sphere may be made of plutonium and the detonator of lead azide, penthrite and a polyester resin. In a modification, Fig. 3 (not shown), the space 23 between the shells 9, 10 is evacuated and is connected to two tanks 27 each containing one of the components of the explosive mixture which may respectively be tetranitromethane as the comburent and hexanol as the fuel. In operation a switch 35 is closed and the tanks are heated from a current source 33 under the control of thermostats 36; at the desired time a switch 32 causes partitions 28 in the tanks to be perforated by pins 29 and their contents are then drawn in the gaseous state into the evacuated space 23 where the temperature of the mixture is maintained lower than that of activation, by a regulating thermostat. To produce explosion of the mixture and therefore the bomb 7, the regulating thermostat is brought out of circuit to give the activation frequency to the fuel portion of the mixture.
Patent GB-1536900-A (GB)
Title: Manufacture of semiconductor-grade ribbon
IPC: H01L31/068
Filed: 1976-10-15
Abstract: 1536900 Semiconductor device manufacture MOBIL TYCO SOLAR ENERGY CORP 15 Oct 1976 [5 Dec 1975] 42956/76 Heading H1K A tube of substantially monocrystalline (as defined in the Specification) semiconductor or insulating material of generally elongate crosssection, opposed portions of which are flat or much less curved than the intervening edge portions, is produced and the edge portions of the tube severed to separate the flat or less curved portions. Though the tube may be of sapphire it is preferably a flat-sided tube of silicon grown by the edge-defined film-fed growth technique described in United States Specifications 3,591,348 and 3,687,633 using the graphite die assembly of Fig. 1 (not shown). Its edges may be severed with a diamond cutter or preferably by etching along edge-adjacent lines exposed through a positive photoresist mask. Solar cells may be fabricated by forming a PN junction either in the tube or in the severed flat portions by diffusion, ion-implantation or epitaxy. In a preferred method phosphorus is diffused from its oxychloride in oxygen into both faces of a portion of P type silicon to provide an NPN structure, one N layer of which is subsequently removed by etching. Electrodes e.g. of electroless plated nickel or evaporated superposed layers of silver and aluminium are provided on opposed faces of the resulting structure, that on the light receiving N face being of grid form. Further subdivision of the severed flat portions into convenient sized pieces is envisaged.
Patent GB-1058717-A (GB)
Title: Improvements in or relating to take-up spools for use with magnetic tape transducing apparatus
IPC: B65H19/28
Filed: 1963-10-31
Abstract: 1,058,717. Magnetic recording &c. apparatus. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Oct. 31, 1963 [Nov. 2. 19621, No. 42963/63. Heading G5R. Magnetic recording apparatus comprises one or more spring-urged members 4, 5 disposed to lie within the flanges of a tape spool 2 so that when an end 14 of a tape is directed between the flanges, the member or members guide the end on to the hub of the spool so that winding on to the hub can be started by rotating the spool in a predetermined direction. Preferably the spools are arranged with horizontal axes so that when the tape is fed by the capstan 13 the end 14 will fall under gravity into contact with the hub of spool 2. To prevent excessive tension in the tape at the instant when the tape becomes anchored to the spool an overload coupling device is provided on the hub of the spool and comprises two half rings 15 and 16 surrounded by a ring 17 which may be of rubber. Initially the two half rings 15 and 16 engage the hub of spool 15 with only slight pressure, but once the first turn of the tape is applied the friction between the ring 17 and the tape 12 is intensified until the tape no longer slips on the spool. The end of the tape may be secured to an attachment which is stiffer and wider than the tape, being of the same width as the separation of the flanges of the spool. The members 4 and 5 can be used to give an indication of the amount of tape on the spool.
Patent GB-1009719-A (GB)
Title: Improved polystyrene
Inventor: DAVIES THOMAS ELLIS
IPC: C08F255/06
Filed: 1962-11-14
Abstract: Toughened styrene polymers are made by polymerizing styrene or an ar-methylstyrene, with or without comonomers, in the presence of 1 to 20%, based on the weight of the styrene polymer of an unsaturated copolymer rubber made by copolymerizing two or more alpha-olefins together with 0.5 to 15% of a compound containing at least two non-conjugated ethylenic linkages.  Preferred alpha-olefins are ethylene and propylene.  Comonomers specified for use with the styrene are alpha-methyl-styrene, chlorostyrenes, acrylonitrile and methyl methacrylate.  The examples describe dissolving copolymer rubber in styrene monomer and polymerizing the resulting solutions in the presence of di-tertiary butyl peroxide.
Patent GB-1282558-A (GB)
Title: Improvements in or relating to programming means
Inventor: GAWLIK HERMAN JAMES
IPC: B41J3/00
Filed: 1968-09-11
Abstract: 1282558 Selective printing DEFENCE SECRETARY OF STATE FOR 27 Oct 1969 [11 Sept 1968] 43113/68 Heading B6F A typewriter has key operated means for rotating its platen backward or forward for printing superscripts (such as powers) and subscripts, the key also producing an output for inclusion in a punched tape, punched card, magnetic tape or like computer programming means, so that the significance of a digit typed can be distinguished by the computer according to the level at which it is printed with respect to the line of type. The platen rotating means may comprise a solenoid S3 acting on a spring- biased plunger 12 to which a pawl P3 is pivoted, the pawl P3 being urged towards a ratchet wheel R3 on the platen shaft, but prevented from engaging the ratchet wheel by a pin 16 engaging a cam surface 22 whereby when the solenoid is operated the pawl is allowed to engage the ratchet wheel. Two platen rotating means are provided for rotation in opposite senses.
Patent GB-1196646-A (GB)
Title: Power Supply Device
IPC: H02H1/06
Filed: 1967-09-22
Abstract: 1,196,646. Protective arrangements. SOC. DES ACCUMULATEURS FIXES ET DE TRACTION. 22 Sept., 1967 [22 Sept., 1966], No. 43338/67. Heading H2K. An arrangement for permitting the delayed opening of a circuit-breaker having contacts 3, 4 and a normally energized release coil 5, on the failure of the main supply, comprises a battery 25 to maintain the energization of the coil for a period determined by a timing device 27. As shown the device 27 is a relay, which with the coil 5 is normally energized from the main supply through a transformer 19 and a rectifier 23. When supply failure occurs, a relay 28 releases causing its contacts 28a to interrupt the circuit for the relay 27. At the end of the timed period, the contacts 27a of the relay 27 open to interrupt the supply from the battery 25 to the coil 5 so that the circuit-breaker opens. The battery 25 is charged from the rectifier 23 under the control of a transductor 26 having its control winding in series with the coil 5. A push-button switch 7 when closed causes the relay 27 to be energized to complete the circuit for the coil 5 and the circuit-breaker can then be closed by a manual control 6. In a modification, Fig. 3 (not shown) the relay 28 may be omitted, the relay 27 being normally energized from a tertiary winding on the transformer 19.
Patent GB-1381446-A (GB)
Title: Electric component assemblies
IPC: H05K5/00
Filed: 1973-09-18
Abstract: 1381446 Component assemblies SIEMENS AG 18 Sept 1973 [22 Sept 1972] 43622/73 Heading H1R The conductively coated underside 6 of printed circuit board 2 rests on shoulders 8 of  metal housing 1 provided with coaxial connection elements 3, and insulated spring pressure members 7 on cover 9 press the inner coaxial conductors 4 into contact with conductor paths 5 on the board. In an alternative embodiment, the spring pressure elements are fixed to the side walls of casing 1.
Patent GB-1279659-A (GB)
Title: Reducing the melt viscosity of polyesters
Inventor: SCHWARZ ECKHARD CHRISTIAN AUGU
IPC: C08K5/1515
Filed: 1969-09-03
Abstract: 1279659 Spinning melt supply system E I DU PONT DE NEMOURS & CO 3 Sept 1969 [5 Sept 1968] 43674/69 Heading B5B [Also in Division C3] The melt viscosity of a molten polyester (e.g. poly[ethylene terephthalate]) is reduced prior to melt spinning by incorporating under pressure, an oxirane compound. In Fig. 1, molten polyester from the finisher tank 1 is urged under increasing pressure by the propeller and screw assembly and the oxirane compound (e.g. ethylene oxide) is injected under pressure at 14. The molten mixture then travels to the spinning machine 6 where a gear pump 7 urges the polyester through a filter assembly 8 and the spinneret 9. Fig. 2 provides for the use of a screw melter 22 having a heated screw, and to which polyester flake is added at 21. (For Figure see next column)
Patent GB-1385326-A (GB)
Title: Co-polymerisation process
IPC: C08F259/00
Filed: 1971-09-20
Abstract: 1385326 Vinyl halide copolymers BP CHEMICALS INTERNATIONAL Ltd 29 Sept 1972 [20 Sept 1971] 43689/71 Heading C3P Vinyl halide copolymers are obtained by polymerizing in a first stage a monomeric material containing at least 50% wt. of vinyl halide in the presence of a free radical initiator until at least 40% of the monomer is polymerized and in a second stage adding a comonomer, which forms a copolymer having a lower softening point than the polymer obtained in its absence, in an amount less than the weight of the remaining monomer from the first stage and completing polymerization in the presence of additional free radical initiator. The first stage monomer is preferably vinyl chloride and the second stage comonomer is methyl methacrylate (exemplified), ethyl, butyl or 2-ethylhexyl acrylate, vinyl acetate or stearate, vinylidene chloride, ethylene or propylene. Suspension polymerization is preferred. The temperature may be raised in the second stage.
Patent GB-1263194-A (GB)
Title: A light signalling device for a ship
Inventor: BENGTSSON SIGURD WALTER
IPC: B63B45/00
Filed: 1969-09-09
Abstract: 1,263,194. Marine signalling apparatus. S. W. BENGTSSON. 9 Sept., 1969 [13 Sept., 1968], No. 44484/69. Heading G4F. A light signalling device for installation on a ship provides groups of flashes to indicate different manouvres of the ship and is designed so that if the control switch is turned off during a group of flashes, the signal is completed. In the circuit shown a switch 17 energizes one of the relays 21 which closes one of the switches E1 . . . E 4  and starts motor M which drives cams D1 . . . D 4  one of which operates lamps 16 in a desired sequence of flashes. A holding contact F maintains the lamps in operation until the starting position shown is reached. A green pilot light 41 indicates that the programme coupling mechanism is in its starting position. A red light 30 indicates that the signal lights are operating.
Patent GB-1149044-A (GB)
Title: Improvements in envelopes
Inventor: WOODALL JOHN
IPC: B65D27/08
Filed: 1966-10-06
Abstract: 1,149,044. Envelopes. BIRMINGHAM ENVELOPE CO. Ltd. 5 Oct., 1967 [6 Oct., 1966], No. 44607/66. Heading B6A. Patch B is attached around its periphery to an inner surface of envelope A, forming a patch pocket, with a protruding edge which forms a flap b. Flap b may be folded over face A<SP>1</SP> of envelope A, and flaps a<SP>1</SP> and b may be sealable to face A<SP>1</SP>, e.g. by matching latex strips. The envelope, the pocket or both may be transparent. Patch B may be attached to the blank from which envelope A is to be formed, and may be equal in depth to envelope A or as illustrated.
Patent GB-1366054-A (GB)
Title: Safety attachment for a pressurised dispensing container
IPC: B65D83/16
Filed: 1972-09-28
Abstract: 1366054 Pressurized dispensing containers J A CORLL 28 Sept 1972 44871/72 Addition to 1303050 Heading FiR A dispensing cap in accordance with the per cent specification is combined with the actuating button 28 and, as described, with the discharge tube 32; it is stated that the discharge tube may be loosely received therein. The button 28 is connected to the side walls by flexible webs 38.
Patent GB-1525718-A (GB)
Title: Slide fastener and method and apparatus of manufacture
IPC: A44B19/12
Filed: 1975-10-31
Abstract: 1525718 Sliding clasp fasteners TEXTRON INC 31 Oct 1975 [9 Jan 1975] 45153/75 Heading E2S The coupling elements 26, 28 are formed from a helical continuous thermoplastics filament with an oblate cross-section whose longer dimension is parallel to the edge of the stringer tape at the head portions 36, the leg portions 38, 40 adjacent the heads 36 having notches 44, 46 of a generally asymmetric, obtuse-angled form. These notches are made by applying transverse separating forces to the heated, interlocked elements by means of camming edges 162 on element engaging teeth 160 of a wheel 152.