baber/WOPTO huggingface dataset:
Patent GB-1119518-A (GB)
Title: Anisotherm evaporation heat-transfer structure
IPC: F28F1/26
Filed: 1965-12-10
Abstract: 1,119,518. Heat exchange surfaces. COMPAGNIE FRANCAISE THOMSON HOUSTON-HOTCHKISS BRANDT. 10 Dec., 1965 [17 Dec., 1964], No. 52656/65. Heading F4S. [Also in Divisions F1 and H1] A heat conducting wall particularly in a steam generator or in an evaporator for liquids, is exposed on one side to a heat source and has its other side immersed in a vaporizable coolant liquid and formed with heat-dissipating protuberances adapted in operation to have substantial temperature gradients established over their side surfaces (e.g. the zones A, B, C, D see also Fig. 1, are of successively increasing temperature), each of the protuberances having tapering side surfaces and a base portion which adjoins the bases of neighbouring protuberances, and so proportioned as to satisfy the relation:- wherein b, S a  and S 1  are the length from base to tip, base area and total side surface area, respectively, of a protuberance; c is the heat conductivity of the wall material; q is the critical flux density of the boiling liquid at the pressure of operation; # is the specified temperature drop from the base to the tip of a protuberance in operation; # is the nominal maximum heat flux to be applied to said side exposed to a heat source; k is a numerical safety factor selectable within the range 1 to 2 and p is the numerical efficiency factor selectable within the range from 0À8 to 1À6, the values of b, S a , S 1 , c, #, # and q being expressed in any coherent system of measuring units. Other applications mentioned are to wall structures in Diesel engines, and to the anode of a high power electronic transmitter tube. The drawing shows how at the end of each protuberance 4, vapour bubbles forming at the zones A-B coalesce into a vapour column 14 which is forcibly ejected from the surface. Ejection of the vapour columns causes an inflow 30 of coolant liquids towards the hottest zones C, D, and this flow combined with the radial outflow of vapour tends to break up the vapour film 15 on the sides of the protuberance particularly at the region M (see also Fig. 1) where a rapid change in the surface temperature of the wall material would otherwise occur with consequent damage thereto. The protuberances 4 may be arranged in rows aligned in two mutually perpendicular directions on the wall surface; or they may comprise elongated parallel ribs. The surface at the outer portion of the protuberance may be roughened. The heat capacity of the terminal portions of the protuberances may be enlarged, (Figs. 7 and 8). This it is stated lowers the temperature at these parts of the protrusion and improves the stability of the temperature gradient.
Patent GB-1073456-A (GB)
Title: Polymerisation process
Inventor: LOOKER EDWARD GIBSON
IPC: C08F2/44
Filed: 1964-12-03
Abstract: An ethylenically unsaturated monomer is polymerized in an aqueous medium in the presence of a catalyst by a process in which a dispersion of one or more monomer- and water-insoluble solid additives in a water-immiscible organic liquid selected from chlorinated paraffins, glyceryl monostearate, epoxidized soya bean oil, dioctyl phthalate and dinonyl phthalate is added to the aqueous medium before or during polymerization.  A list of monomers is given, those preferred being vinyl chloride or methyl methacrylate, or a mixture of the former with up to 50% of another monomer.  The additive is, e.g. TiO2, MgO, carbon black or a stabilizer such as tribasic lead sulphate.  The additive particles may be coated, e.g. with calcium stearate or stearic acid. Polymerization is carried out in emulsion or suspension using peroxy or azo catalysts and suitable emulsifying or granulating agents.  In the examples a dispersion of tribasic lead sulphate in a mixture of dioctyl and dinonyl phthalates is added to an aqueous medium containing polyvinyl alcohol, azodiisobutyronitrile, cetyl alcohol and stearyl alcohol, prior to addition of vinyl chloride and polymerization thereof.  In Example 2 a dispersion of carbon black, TiO2, ultramarine blue and ultramarine violet in chlorinated paraffins is added along with the vinyl chloride.  The polymers produced are extruded to form pipes.
Patent GB-1536559-A (GB)
Title: Demodulating circuits for colour television sets
IPC: H04N11/16
Filed: 1975-12-24
Abstract: 1536559 Colour television INDESIT-INDUSTRIA ELETTRODOMESTIC ITALIANA SpA 24 Dec 1975 [10 Jan 1975] 52909/75 Heading H4F Pal demodulator comprises two synchronous demodulators for each of the chroma signals (e.g. demodulators 6 and 7 for the B-Y chroma signal from PAL delay line decoder 1, 2, 3, 5) supplied with subcarrier oscillations in mutual quadrature (-90 degrees phase shifter 13). The output of demodulator 6 is fed to a variable gain amplifier 16, the gain of which is automatically controlled so that the demodulated chroma signal is available at its output 21 with an amplitude which remains constant even if the phase of the subcarrier oscillations, derived from subcarrier generator 11 in response to separated bursts 4, which are supplied to the demodulators varies. The outputs of demodulators 6 and 7 are squared in multipliers 17 and 18, and the sum thereof from adder 19 is fed to one input of differential amplifier 20 to which is also fed the squared 22 output signal of amplifier 16. Any difference signal from amplifier 20 is used to control the amplifier 16. The arrangement for the R-Y signal is similar apart from the subcarrier oscillations being fed to the two demodulators 8 and 9 via a PAL switch 14 (line alternate 180 degrees phase shift) and a +90 degrees phase shifter 15. The bursts separated at 4 from the PAL signal may comprise swinging bursts or a constant phase burst in every second line.
Patent GB-1203367-A (GB)
Title: Delustrants for polyamides
IPC: C08K5/05
Filed: 1968-11-08
Abstract: 1,203,367. Delustred polymers. BADISCHE ANILIN- & SODA-FABRIK A.G. 8 Nov., 1968 [9 Nov., 1967], No. 53020/68. Headings C3F, C3P and C3R. [Also in Divisions C4 and D2] A delustrant for polyamides contains by weight (a) 20 to 70% TiO (b) 0.1 to 10% of an alkali metal or ammonium salt of an acrylic acid polymer of K-value 30 to 100 (c) 1 to 10% of a reaction product of ethylene oxide and a polyamide of K-value 35 to 80 (d) 1 to 30% of an alcohol, and (e) 79 to 29% water. Preferably (a) has a particle size below 2 microns; (b) is a sodium salt of a homopolymer of acrylic acid or of a copolymer thereof with up to 20% of N-vinyl pyrrolidone, acrylamide or acrylonitrile; (c) is a reaction product of 3 to 6 moles ethylene oxide with 1 mole of polycaprolactam of K-value 60 to 70; (d) is ethanol, glycol or glycerol; and (e) has a conductivity below 20 microsiemens. The composition is preferably prepared by wet grinding the ingredients for 1 to 20 hours until it satisfies a described sedimentation test. The delustrant may be incorporated in polycaprolactam during the continuous polymerization thereof; it may also be used for spin-delustring viscose, polyacrylonitrile, cellulose acetate and polyesters and for stock-colouring paper.
Patent GB-1519538-A (GB)
Title: Reefing apparatus for a sailing ship
IPC: B63H9/10
Filed: 1976-12-20
Abstract: 1519538 Reefing apparatus K O A H LARSSON 20 Dec 1976 [19 Feb 1976] 53138/76 Heading B7V Reefing apparatus for sails which, as described, operates in a manner akin to a roller blind comprises a boom having a slit through which the sail passes and a shaft 7 rotatably mounted within the boom on to which or from which the sail is wound. A helical spring 11 surrounds another rotatable shaft 8 and its ends are fast with the shafts 7 and 8 respectively so that when the sail is hoisted it is stressed and when the sail's halyard is released it drives the shaft 7 to reef the sail. The shafts 7 and 8 may be coupled together by a pin 10 and rotated together manually by a screw and worm mechanism 9, 19.
Patent GB-1508280-A (GB)
Title: Valves for use in pipe drilling
IPC: F16K3/02
Filed: 1976-12-21
Abstract: 1508280 Valves UNDERPRESSURE ENG CO Ltd 21 Dec 1976 53318/76 Heading F2V A stem 4 extending from the valve plate 3 of a gate valve is slidable from a position within the valve housing (as illustrated) to a position in a sealing gland 5, and is adapted at 6 to be releasably coupled to a handle 7 for actuation of the valve or to locking means for holding the valve open.
Patent GB-1280636-A (GB)
Title: Improvements in or relating to nuclear reactors
Inventor: WEBB JOHN
IPC: G21C7/16
Filed: 1968-11-11
Abstract: 1280636 Controlling reactors UNITED KINGDOM ATOMIC ENERGY AUTHORITY 28 Oct 1969 [11 Nov 1968] 53418/68 Heading G6C In a nuclear reactor having a shield rotatably mounted for refuelling purposes, shut-down equipment comprises a rigid tube penetrating the reactor core, a shut-down absorber element freely slidable in the tube and normally disposed in a projecting end region of the tube, remotely actuatable liquid servo means having its actuating means disposed outside the core and shield, for moving the element in the tube so as to insert the element into the core, and releasable means for retaining the element in its inserted position. Referring to the figure, the invention is shown as applied by way of example to a sodium-cooled fast reactor. The reactor core 5, axial breeder regions 6 and radial breeder regions 7 are contained in a vessel 8 carried by a diagrid 9 supported on brackets 10 within the main reactor vessel 1, sodium filling both the vessels 1 and 8. The rotatable shield 4 carries normal control rod operating mechanisms (not shown) for operating for example eleven control rods, six for shut-down and five for control. There is provision for releasing these control rods from their operating mechanisms to enable the shield 4 to be rotated, release only being effected when the rods are fully inserted in the core 5. As a supplement to the normal shut-down rods, two or more shutdown expedients (only one shown) are provided in accordance with the invention. The rigidity of each tube 13 penetrating the core 5 is chosen so that it will resist, without substantial distortion, forces which may damage or distort the reactor core. A control element 14 has a mass of absorber 15 which, when the element is fully inserted in the tube 13, registers with the core 5, and the element 14 may be of pivoted link construction to ensure its freedom in tube 13 even if this has suffered some distortion. A piston 21 housed in a cylinder 18 within shielding 11, together with the tube 13 and a connecting pipe 16 which contain liquid sodium whose level is normally 1/3 the way up the cylinder 18, constitute the abovementioned liquid servo means. The piston 21 is connected by a suspension 22 to a mechanism 23 by means of which the piston 21 is winched to the top of the cylinder 18, a releasable clutch being provided for its free fall. The piston 21 has sufficient energy in free fall for it to raise the element 14 into the core-registering position when it reaches the sodium level. The element 14 is held in that position by a latch 24.
Patent GB-1224928-A (GB)
Title: Improvements relating to by-products of the viscose process
Inventor: TANAKA RYUHEI
IPC: C01B31/26
Filed: 1968-11-13
Abstract: 1,224,928. Removing H 2 S from CS 2 . DAIWA BOSEKI K.K. 13 Nov., 1968, No. 53915/68. Heading C1A. [Also in Division B1] Gas-vapour mixtures comprising both carbondisulphide and hydrogen sulphide from any of the various stages of the viscose process are passed by collectors A, B, C &c. to transport pipe 1 where the stream is first washed with water sprayed through jets 6 to remove sulphuric acid mist and other soluble materials, and then with 0À5-2% aqueous caustic alkali through jets 7 to remove most of the hydrogen sulphide present as alkali metal hydrosulphide solution, which solution can then be returned to the scouring stage of the viscose process for use in dehydrosulphurization. The partially purified stream then passes to column 10 where it rises in counterflow to a solution of a dehydrosulphurization agent, such as a solution of sodium arsenite or sodium hydroxide. The effluent stream, containing carbon disulphide but substantially free from hydrogen sulphide, then enters activated carbon column 11 where the carbon disulphide is adsorbed, recoverable for re-use in the viscose process.
Patent GB-1118450-A (GB)
Title: Improvements in the production of artificial leather
IPC: B29C51/10
Filed: 1965-12-21
Abstract: Artificial leather that is capable of being deep drawn comprises a fleece of endless partially drawn filaments coated with a deep drawable film of a polymer or polymer mixture e.g. of polyvinyl chloride, which may be plasticised with butadiene-acrylonitrile-styrene, polyurethane.  The artificial leather is produced (1) by coating the fleece with a film-forming polymer or polymer mixture and solidfiying the polymer or polymer mixture on the fleece to form a deep-drawable film thereon; (2) by laminating the fleece to a preformed deep drawable film of a polymer or polymer mixture; or (3) forming a polyvinyl chloride film by calendering, coating the film with a sticky polyvinyl chloride paste and then pressing on to the coated side of the film a fleece of endless partially drawn filaments.  The filaments in the fleece are bonded together at spaced apart points by a binder e.g. with a dispersion of butadiene-acrylonitrile containing polymerised acrylic acid.  The fleece may have been formed initially by extruding dissolved or molten fibre forming polymeric material to form a sheet or sheets of filaments, stretching the filaments so that they are partially drawn, and at least partially setting the filaments by forcing streams of gas or vapour on each side of each sheet and passing each sheet and its associated streams down a guide duct, and filaments thereby being maintained parallel to one another, and collecting the filaments into a fleece without the filaments having previously contacted one another.  The film may be embossed during the lamination stage using an embossed calender roll to press the film against the fleece.  The fleece may be composed of polyamides, polypropylene, polyurethanes and polyesters.
Patent GB-546369-A (GB)
Abstract: 546,369. Cystoscopes &c. SCHRANZ, R. June 3, 1941, No. 7019. [Class 81 (ii)] A cystoscope or other endoscopic instrument has the lamp casing at the distal end frictionally held in or on an adaptor which is screwed into or on to the instrument. As shown the lamp casing 1 is formed with a smooth spigot 7 fitting frictionally within the adaptor 8 which is screwed into the end 2 of the instrument. A collar 9 on the adaptor is of the same diameter as that of the casing 1 and a spring washer 10 may be fitted between the collar 9 and the shoulder on the casing formed by the spigot 7. A lip 11 on the spigot is swaged or pressed outwards over a chamfer at the end of the adaptor and by turning the casing, the window 6 may be adjusted relatively to the optical axis of the instrument. Specification 403,896 is referred to.
Patent GB-1454289-A (GB)
Title: Tell-tale device for use with safety apparatus protecting vehicle occupants in a collision
IPC: B60R21/16
Filed: 1973-11-26
Abstract: 1454289 Accelerometers MESSERSCHMITTBOLKOW-BLOHM GmbH 26 Nov 1973 [23 Dec 1972] 54798/73 Heading G1K [Also in Division B7] The operation of an apparatus which protects vehicle occupants in the event of a collision, e.g., a crash restraint bag, is recorded by a marking device in conjunction with a mass 17 capable of deflection from a rest position by deceleration. The mass 17, Fig. 2b, is in the form of a piston spring urged upwardly in cylinder 15 having a wall 19 deformable by the pressure of gas used to inflate a bag 11 positioned within a steering wheel 7, such that movement of the mass 17 is constricted. From the distance covered by the mass it is possible to calculate the deceleration of the vehicle at the instant of ignition of a propulsive charge 10 which initiates inflation of the bag. If this deceleration was sufficient to cause operation of the bag 11 it can be assumed that the bag was not actuated until impact. However, if the distance covered by the piston is less than a predetermined amount it may be assumed that the bag operated without any collision. In another embodiment, Fig. 3a (not shown), the interior of a tube (36) is subjected to gas-pressure which causes deformation so as to trap a leaf-spring (32) carrying a mass (34). The mass (34) has a contact (37) which co-operates with a second contact (38) to energize an ignitor for inflating a crash bag, not shown. In a further embodiment Fig. 4 (not shown) a pin (59) is carried by a piston (58) to mark a trace on a spring pressed piston 53 upon an increase in gaspressure on the upper side of the piston, the length of the trace indicates the deceleration undergone up to the instant when the safety apparatus was actuated. The device may also be applied to a system using a seat belt tightening apparatus.
Patent GB-1374450-A (GB)
Title: Field deflection amplifier circuit
IPC: H03K4/69
Filed: 1971-11-25
Abstract: 1374450 Field deflection circuit PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 25 Nov 1971 [28 Nov 1970] 54824/71 Heading H3T In a field deflection amplifier circuit of the type in which a bidirectional switch becomes conductive during the flyback to assist reversal of the current in the deflection coils and in which the flyback of the control voltage applied to the input occurs more quickly than the flyback current in the coil, the bidirectional switch is controlled by the difference between the input voltage and a voltage proportional to the current in the coils so that the flyback terminates when the coil current reaches the desired value. The figure shows a single ended push-pull class B amplifier circuit with negatve feedback from a resistor 12 sensing the current in the deflection coil 11 to the emitters of the input stage. The flyback of the deflection current cannot immediately follow the flyback portion of the input wave and accordingly the feedback is such that substantially the full input swing is effective at the input transistors. This causes a current step at the emitters of transistors 8, 8<SP>1</SP> which renders a switching circuit 27 conductive. Accordingly resonant reversal of the deflection coil current occurs initially via diode 15<SP>1</SP>, capacitor 29 and switch 27, diode 28 being non-conductive. During the scan the capacitor 29 had charged to the difference between the supply voltages so that when switch 27 is made, the voltage at the left hand electrode of the capacitor approaches a value equal to this voltage plus the voltage of the negative rail (e.g. - 60V). This limits the peak voltage across the coil during the flyback to a high value and thus allows rapid reversal of the current. During the second half of the flyback the current reverses and flows through transistor 10<SP>1</SP> slightly discharging the capacitor 29. Eventually the difference between the input control voltage at terminal 2 and the voltage across the sensing resistor reaches the threshold voltage of switch 27 i.e. the desired starting value for the scan, and the switch then becomes non-conductive to allow the new scan to start. A resistor 18<SP>1</SP> allows adjustment of the mid point of the scan and a diode 13, 13<SP>1</SP> stabilize the current in the output transistors.
Patent GB-1174934-A (GB)
Title: Improvements relating to the Welding of Plastic Materials by Dielectric Heating
Inventor: HUGHES CHARLES
IPC: B29C65/04
Filed: 1966-12-07
Abstract: 1,174,934. Laminating plastics layers. RADYNE Ltd. 7 Dec., 1967 [7 Dec., 1966], No. 64845/66. Heading B5N. [Also in Divisions B6 and G5] Two sheets of acrylic resin material are bonded together by interposing between them a layer of vinyl resin sheeting and subjecting the resultant assembly to high frequency dielectric heating and pressure, by placing the assembly between the electrodes of a dielectric heating press. The acrylic resin material is preferably polymethyl methacrylate, in which case polyvinyl chloride sheeting is used as the intermediate layer. In a modification, a sheet of vinyl resin material is lightly attached to the surface of one acrylic resin sheet, e.g. by a contact adhesive, the pair of sheets cut into a desired shape, and then placed on a base acrylic resin sheet, after which the assembly is subjected to dielectric heating and pressure, as above.
Patent GB-552390-A (GB)
IPC: C21C1/00
Abstract: 552,390. Alloys. BRITISH CAST IRON RESEARCH ASSOCIATION, MORGAN, E., and HINCHLIFFE, E. Aug. 2, 1941, No. 9877. [Class 82 (i)] [Also in Group XXII] In order to regulate the depth of chill in iron castings containing tellurium and required either to possess hard abrasion-resisting surfaces, or to be subsequently malleabilized the molten iron is heated to above its normal pouring temperature, e.g. 1500‹-1600‹C., and poured at this or some lower temperature. The iron may contain under 0.1 and preferably 0.05 per cent. of tellurium or 0.01 of tellurium and 0.15 of boron.
Patent GB-1459196-A (GB)
Title: Microfiche
IPC: G02B6/44
Filed: 1973-11-28
Abstract: 1459196 Micro-fiche PERSONAL COMMUNICATIONS Inc 28 June 1973 [28 Nov 1972] 55273/73 Heading G2X A micro-fiche has a series of integral lenses 21 moulded in a sheet 20 the back of which carries information in a fixed photographic emulsion 18. Each set of micro information occupies a series of areas distinct from but interlaced with each other set and each of such areas has its own lens.
Patent GB-1423674-A (GB)
Title: Data processing systems
IPC: G06F9/48
Filed: 1973-11-28
Abstract: 1423674 Data processing HONEYWELL INFORMATION SYSTEMS ITALIA SpA 28 Nov 1973 [29 Nov 1972] 55286/73 Heading G4A In a data processing system in which information may be transferred between a central processor 1 (Fig. 1) and a plurality of peripheral devices 4-13, a variable priority network (Fig. 3 or 4, not shown), having a higher number of output lines than interrupt request input lines, selectively assigns to each interrupting request a variable priority level with respect to other such requests under the control of command signals from the processor. In this way the interrupt request from for example a synchronous serial printer following a line feed and carriage return (which is not urgent) may be treated differently from an interrupt request for further characters (which is urgent since a prompt reply is necessary to permit proper operation of the printer). Variable priority network.-In the embodiment of Fig. 3 interrupt requests INT1-INT4 from the four channels (there being only one line for each channel) are each fed to one of four sets of gates, each set being controlled by an associated register R1-R4 receiving at its inputs microcommands from the processor, its contents being decoded to control the gates in accordance with the priority level required by the command to be effected. The outputs from the gates are fed to a priority selecting unit 72 which supplies a signal on one of four leads 81-84 to set a flip-flop 77-80 (one for each channel). The priority selecting unit 72 comprises for each of its inputs an inverter inhibiting output gates for all lower priority channels. In a second embodiment of variable priority network (Fig. 4, not shown) there are a plurality of interrupt request lines for each device which may forward requests in coded form.
Patent GB-1219596-A (GB)
Title: Ignition device for multi-cylinder engine
IPC: F02P15/00
Filed: 1968-11-22
Abstract: 1,219,596. Ignition systems; Rotary-piston internal-combustion engines. TOYO KOGYO CO. Ltd. and MITSUBISHI DENKI K. K. Nov. 22, 1968 [Nov. 22, 1967; Nov. 6, 1968], No. 55584/68. Headings F1B and F1F. An ignition system for a multi-cylinder engine e.g. a rotary piston engine comprises at least two ignition coils 2, 3 and two ignition plugs per cylinder. As shown the plugs T 1  T 2  are associated with a distributor 10 while the plugs L 1  L 2  are in series with the secondary of their associated ignition coil 3. The two plugs of each cylinder may be fired simultaneously or at different instants. Modifications employing a semi-conductor switching device or devices, are described. The primary windings of the ignition coils may be in series.