baber/WOPTO huggingface dataset:
Patent GB-1173007-A (GB)
Title: Improvements in and relating to Control Circuits
IPC: F23N5/20
Filed: 1966-11-30
Abstract: 1,173,007. Burner control. HONEYWELL Inc. 30 Nov., 1966 [24 Jan., 1966], No. 53672/66. Heading F4T. [Also in Divisions G1 and H3] In a burner control circuit there is a silicon controlled rectifier 40 which during a trial period for the establishment of a flame is biased to conduct current from an A.C. source 10 in the absence of said flame, and to block the current when the flame is established, wherein bias for the gate of the S.C.R. is derived from the interaction of a voltage drop across the heater 44 of the thermal safety cut-out 22 and a voltage applied to the gate electrode thereof derived from a potential divider circuit 30-33 across the source, the said heater isolating the control circuit at the end of a trial period in the event that the flame is not established. In use, on a call for heat thermostat 20 will close and a voltage be applied across the divider circuit which includes a cadmium cell 33. With the cell not illuminated, since the flame has not been established, the S.C.R. fires energizing relay coil 24 to close burner igniter contact 26 and holding circuit contact 25. Establishment of the flame will illuminate cell 33, lowering its resistance, so that the voltage across resistor 32 drops sufficiently to turn off the S.C.R.
Patent GB-1450830-A (GB)
Title: Manufacture of triaryl phosphines
IPC: C07F9/50
Filed: 1974-12-13
Abstract: 1450830 Triaryl phosphines; phosphonium salt F HOFFMANN-LA ROCHE & CO AG 13 Dec 1974 [14 Dec 1973] 53966/74 Heading C2P A triaryl phosphine in which the aryl groups, which may be the same or different, are C 6-16  aromatic hydrocarbon groups, is prepared by reacting under pressure the corresponding triaryl phosphine oxide with hydrogen in the presence of a silicon tetrahalide and in the presence of elemental sulphur or selenium or a sulphur or selenium atom donor. The sulphur or selenium atom donor may be a triaryl phosphine sulphide or selenide, an inorganic sulphide or selenide, a mercaptan or selenol or an organic sulphide, episulphide or selenide. The sulphur or selenium or donor thereof may be incorporated into a metal catalyst, such as palladium on a carbon support. In an example, a beta-ionylidene ethyl triphenyl phosphonium salt is prepared by reacting triphenyl phosphine, prepared as above, with vinyl-beta-ionol.
Patent GB-1416453-A (GB)
Title: Method of producing castings or other mouldings by means of  flexible containers holding granular material
IPC: B29C33/38
Filed: 1972-11-22
Abstract: 1416453 Making orthopaedic products LANDSTINGENS INKOPSCENTRAL 22 Nov 1972 [1 Dec 1971] 53972/72 Heading A5R [Also in Divisions B3 and B5] A moulding for use in making an orthopaedic product is made by (a) positioning a gas-tight, evacuatable mould having a wall which includes at least one flexible wall portion e.g. rubber in a desired position in relation to the contour of male and/or female master, (b) locating a porous compressible material e.g. foam rubber in predetermined positions inside the mould adjoining the flexible wall portion thereof, (c) pouring a granular material e.g. sand and/or cellular plastics pellets into the mould so that the flexible wall portion is deformed by the pressure of the material until it conforms to the contour of the master, (d) subjecting the space containing the granular material to a negative pressure so that the granular material forms a compacted moulding with a clearance of given size between the master and the mould, the clearance being greater at the predetermined positions than elsewhere and (e) maintaining the negative pressure in the mould while forming either a final or intermediate product in accordance with the shape of the flexible portion of the wall (for details of the method see Division B5). The orthopaedic product may be an above- or below-knee prosthesis, foot-beds and elevators for foot-wear, arch supports, arm abduction splints, fracture splints, inertia orthos for spastics, prone rests, corsets, foot sockets and shoe lasts.
Patent GB-1288244-A (GB)
IPC: H02M1/06
Filed: 1969-11-07
Abstract: 1288244 Electromagnetic brakes ROBERT BOSCH GmbH 7 Nov 1969 [7 Nov 1968] 54555/69 Heading F2E [Also in Divisions H2 and H3] A switching arrangement for periodically interrupting a supply to a load 11 comprises a main thyristor 18 arranged to be turned on by a trigger circuit 29 and turned off by a commutating thyristor 25 and commutating capacitor 26 under control of a further trigger circuit 35 and a time delay circuit 64 for delaying the first trigger pulse applied to the commutating thyristor 25 whereby upon initial energization of the arrangement, the main thyristor 18 is maintained conductive while the commutating capacitor 26 is being charged. As shown, when switch 55 is closed, relay 14 closes contacts 15. Capacitor 47 charges via resistor 48 until unijunction transistor 30 breaks down, so that a pulse is passed via transformer 38 to trigger main thyristor 18. Current begins to build up in the inductive load 10 (which may be a lifting magnet, D.C. motor or eddy current brake). The current continues until capacitor 50 has charged sufficiently to break down unijunction transistor 36, when a pulse is passed via transformer 42 to trigger the commutating thyristor 25 which turns off thyristor 18 by discharge of the commutating capacitor 26. The charge of capacitor 26 is reversed by the inductive load 10 so that thyristor 25 is turned off. The load current now decays via free-wheeling diodes 19 and 23 until capacitor 47 once more breaks down unijunction transistor 30, retriggering the main thyristor 18. This action continues, the on-off ratio being determined by the potentiometer 49. Transistor 31 and diode 57 respectively ensure that timers 29 and 35 operate alternately only during off and on periods. Capacitor 26 has its charge reversed by 28 and 27 each time thyristor 18 is triggered, the charge being augmented by inductive coupling via windings 16 and 28. A further timer 64 ensures the initial on period is longer than subsequent periods.
Patent GB-1531236-A (GB)
Title: Vehicle headlight lamp a bulb therefor and a shield for the bulb
IPC: F21V11/16
Filed: 1975-10-30
Abstract: 1531236 Vehicle headlamps EGYESULT IZZOLAMPA ES VILLAMOSSAGI RT 30 Oct 1975 [19 Dec 1974 21 April 1975] 54976/74 and 16415/75 Heading F4R [Also in Division H1] A vehicle headlamp comprises a paraboloidal reflector and a bulb containing a main beam filament, a meeting beam filament and a shield partially surrounding the meeting beam filament so as to produce an asymmetrical light beam having a sharp, stepped-form cut-off delimited by two parallel lines displaced from one another in a vertical direction, the cut-off being produced by a portion of the shield having a curved edge. The Specification discloses a function defining a family of curves the envelope of which describes the shape of the edge.
Patent GB-1148119-A (GB)
Title: Production of foamed resins
Inventor: SEN DURGACHARAN
IPC: C08J9/00
Filed: 1966-12-09
Abstract: 1,148,119. Foamed thermoplastic resins. MONSANTO CHEMICALS Ltd. 20 Oct., 1967 [9 Dec., 1966], No. 55125/66. Headings C3C and C3P. A foamed thermoplastic resin is produced by extruding a heat-softened foamable thermoplastic resin containing a blowing agent (which is a volatile liquid or a gas) under pressure and a nucleating agent comprising a salt of a C 1-16  aliphatic carboxylic acid into a zone of lower pressure to allow foaming of the resin. The resin may be polyethylene or a copolymer of ethylene and vinyl acetate. The salt may be sodium, calcium, magnesium, aluminium, barium, lead or zinc palmitate, formate, acetate, butyrate, or lactate and may be used with silica, boric acid, a wax or talc as additional nucleating agents. The blowing agent may be butane or nitrogen. The resin may be formed into a foamed film.
Patent GB-1144660-A (GB)
Title: Improved method of forming embossments on the surface of a synthetic resin tube
IPC: B29C59/02
Filed: 1966-12-12
Abstract: 1,144,660. Moulding tubes. I. SATO. 12 Dec., 1966, No. 55495/66. Heading B5A. [Also in Division B6] To provide embossments on the outer surface of a synthetic resin cylinder 2, e.g. of acrylobutadiene styrol, the cylinder is inserted into cylindrical heated moulding member 1 provided with an embossing surface on its inner surface, a rubber tube 3 is inserted into the synthetic resin cylinder and a spherical body 4 closely fitted within tube 3 is forced to move within the rubber tube, e.g. by pushing, to bring the outer surface of cylinder 2 into contact with the inner surface of member 1. The outer face of member 1 may be provided with a heating wire to bring its inner face to about 100‹ C.
Patent GB-1260284-A (GB)
Title: Security device for use on a door
Inventor: BARKER JOHN LEWIS
IPC: E05C17/36
Filed: 1967-12-07
Abstract: 1,260,284. Door chains. ARCHIBALD KENRICK & SONS Ltd. 9 Dec., 1968 [7 Dec., 1967], No. 55731/67. Heading E2A. A security device for a door comprises a casing 10 for attachment to the door, a spring- loaded drum 13 within the casing, a flexible element 15 wound on the drum and extending at one end through an opening 16 in the casing, and means 17 on the end of the flexible element for interlocking engagement with a coacting keeper 18 for attachment to the door frame, and a back plate 11 which lies, in use, between the casing and the door and projects from the casing to protect the door from damage by the flexible element, means being provided for limiting withdrawal of the flexible element from the casing, whereby, in use, opening of the door is limited by the flexible element. As shown, the flexible element is a stranded stainless steel cable.
Patent GB-1254078-A (GB)
Title: An apparatus for the separation of mixtures by crystallisation, and its use
Inventor: SCHILDKNECHT HERMAN
IPC: B01D9/00
Filed: 1969-11-14
Abstract: 1,254,078. Conveyer screw. H. SCHILDKNECHT, and K. MAAS. 14 Nov., 1969 [15 Nov., 1968], No. 55891/69. Heading B8A. [Also in Division B1] A conveyer screw, useful in separating components of differing m.p.'s in a mixture, comprises an upright column C on the axis of which a rotatable bar 3 is located and wherein an independently rotatable spiral 4 is located in the annular gap 2 between the inner walls of the column and the bar. In use, the spiral is rotated so the turns run downwards and the bottom of the column is heated at 7 to establish a temperature gradient. The mixture, e.g. benzene containing azobenzene, is fed in at 1, the high m.p. component (benzene being recovered pure at 8 and the remainder at 9.
Patent GB-1371458-A (GB)
Title: Propellant powder compositions
IPC: C06B25/26
Filed: 1972-12-05
Abstract: 1371458 Propellants SOC NATIONALE DES POUDRES ET EXPLOSIFS 5 Dec 1972 [17 Dec 1971] 56134/72 Heading C1D A propellant composition comprises nitrocellulose, an explosive oil of calorific value greater than 1200 cals./g., a plasticizer, a stabilizer, a combustion catalyst, and from 13À8 to 25% by weight of cyclotrimethylenetrinitroamine or cyclotetramethylenetetranitroamine. The explosive oil may be nitroglycerine, nitroglycol, butane-triol trinitrate, or isobutane-triol trinitrate. Suitable plasticizers are triacetin, ethyl phthalate, and octyl phthalate, and suitable stabilizers are centralite, 2-nitro-diphenylamine, and diphenyl urethane. Combustion catalysts referred to are a lead salt, lead monoxide and a mixture of lead monoxide and copper monoxide. Sucrose acetoisobutyrate or sucrose octoacetate may be included as a combustion retarder and acetylene black as a combustion accelerator. The composition may be prepared in the form of a block by adding the stabilized and plasticized explosive oil to a mould containing granules of the other ingredients and gelatinizing the product by stoving. The composition produces very little exhaust smoke on burning, so that tracking and guidance of a missile by infra-red radiation are facilitated.
Patent GB-1401455-A (GB)
Title: Life buoy
IPC: B63C9/08
Filed: 1972-12-05
Abstract: 1401455 Lifebuoys S YAMANAKA 5 Dec 1972 [18 July 1972 (2)] 56159/72 Heading B7U A lifebuoy presents a flexible upper surface and a rigid lower water contacting surface. The buoy is thus comfortable for the user to rest on, and can have a lower surface designed to give low water friction. The buoy may simply comprise an inflatable vessel whose lower wall is made of rigid rubber or synthetic resin and whose upper wall is made of flexible rubber or synthetic resin, Fig. 3 (not shown). Alternatively, and as illustrated, the buoy may comprise a component B of rigid rubber or synthetic resin which is captured by a separate flexible rubber or synthetic plastic envelope A on inflation of the latter. The buoy is of oval horizontal section and has a longitudinal keel formation 15.
Patent GB-1328909-A (GB)
Title: Selector valve assembly with mechanical latch
IPC: F16K11/24
Filed: 1971-12-09
Abstract: 1328909 Valves TWIN DISC Inc 9 Dec 1971 [30 Dec 1970] 57158/71 Heading F2V A selector valve assembly for selectively directing hydraulic fluid in the transmission system of vehicles comprises a valve housing 1, a plurality of spring biased valve spools 2 with tapered ends 27 each of which is actuated by an electric solenoid 3 which includes a face valve 4 adapted to abut a nose piece 5 with an orifice 6, and a slideable latch plate 20 having a series of holes, one for each spool which is spring biased to engage a notch 41 of a spool after the actuation of the spool causes the tapered end to pass through the associated hole. A neutral spool 70 with a similarly actuating mechanism is provided with a nose portion insertable through a hole in the latch plate to realign the same and allow disengagement of the captivated valve spool 2. Passage 55 provides high pressure means in communication via the above face valve with the valve and neutral spools and a passage 77 communicates the passage 55 also to the front face of the neutral spool 70.
Patent GB-1187745-A (GB)
Title: Tamper-Proof Packages
IPC: B65D41/34
Filed: 1968-12-04
Abstract: 1,187,745. Bottle closures. CONTINENTAL CAN CO. Inc. 4 Dec., 1968 [22 Jan., 1968], No. 67642/68. Heading B8T. A tamper-proof container 22 includes a threaded closure 10 having an upper portion in the form of a cap 36 and a lower portion in the form of a separable ring 18, the ring 18 being connected to the skirt 14 of the cap 36 by circumferentially spaced frangible bridges 19. The curl 20 on the ring 18 is formed with a number of detents 34 which co-operate with detents 27 on the neck of the container 22 such that as the cap is rotated to open the container, the ring 18 is held stationary in order that the frangible bridges 19 may be broken to remove the cap completely from the container. The neck of the container has a reduced diameter portion 23 and the detents 27 on the neck are formed such that as the cap is rotated reaction forces between the detents 34 and 27 force the ring 18 to fall freely over the neck portion 23 until it hits a shoulder on the container in which case illicit opening is easily detected. As shown the cap is provided with a sealing gasket of flowable plastics material, the threads being formed in this material. Alternatively, a sealing gasket may be provided beneath the skirt top with the threads being formed in the skirt, Figs. 7-11 (not shown). In further alternatives, the detents on the container may be formed as protuberances and the detents on the ring as hollows. The ring need not have a curl in which case the surface of the ring has detents contiguous with the detents on the container, Fig. 6 (not shown). Capping.-The closure may be applied to the container using a press-on punch which causes the flowable plastics material to form a thread with the thread on the container and pushes the curl 20 into the detents 27 on the container. The punch may be continuous or may engage the curl at spaced points, Fig. 3 (not shown).
Patent GB-1180470-A (GB)
Title: Improvements in Magnetic Field Measuring Devices
Inventor: GUILLEMIN GERMAIN
IPC: G01R33/04
Filed: 1967-12-20
Abstract: 1,180,470. Measuring magnetic field strength. COMPAGNIE DES COMPTEURS. Dec.20, 1967 [Dec.28, 1966], No.57761/67. Heading G1N. In a fluxgate magnetometer, a multi-vibrator oscillator 50 controls a bi-stable circuit 51 to generate complementary squarewave signals S, S whereby transistors T 10 , T 13  conduct when S is positive and T 11 , T 12  conduct when S is negative, thus supplying probe 60 with alternating current via transformer 57. In the absence of a superimposed unidirectional magnetic field, current pulses I 1 , I 2 , flowing through resistor 53 when S is negative and positive respectively, are equal, but if there is an external unidirectional magnetic field, the component of this field along the probe core axis causes a corresponding inequality in the current pulses I 1 , I 2 . A switching circuit comprising transistors T 14 , T 15  connects pulses I 1  to a peak voltage detecting and integrating circuit 61 and connects pulses I 2  to another peak voltage detecting and integrating circuit 62. The difference in the output voltages of circuits 61, 62 is amplified, the voltage appearing across terminals 66 being the output voltage of the magnetometer. Negative feedback is provided through an alternating resistor 64 to probe 60 to produce a flux in opposition to the superimposed external field. Instead of a common resistance 53, separate equal resistances may be connected to the collectors of transistors T 12 , T 13 , eliminating the need for switching circuit T 14 , T 15 , the voltages developed across the separate resistors being applied direct to circuits 61 and 62 respectively.
Patent GB-1311490-A (GB)
Title: Device for applying tensioning and sealing a synthetic band around a parcel or the like
Inventor: VAN DE BILT P A
IPC: B65B13/32
Filed: 1970-12-07
Abstract: 1311490 Packaging machines METAVERPANV 7 Dec 1970 [10 Dec 1969] 58059/70 Heading B8C A machine for applying, tensioning, and sealing a synthetic band around a parcel, comprises a clamp 38 on a packing block 37 for holding the front end of the band, a device for tensioning the band round the parcel, a reciprocating block 21 which seals the overlapping band parts, and means for releasing the tension before the band is severed from the stock by knife 33. The band guide frame 1 has a horizontal guide-way defining slots 3a, 4 through which the band enters and leaves the sealing mechanism. After clamp 38 has gripped the front end of the band, the band is wound round the parcel and tensioned, whereupon block 5 is moved upwards to clamp the band against part 6. Block 21 is now moved upwards to seal the overlapped bands against ribbed surface 28 of cover-plate 24. As block 21 moves downward after sealing, the clamp 5 is released to remove tension. A block 15 now moves towards frame 1 between plates 10, 11 until knife 33 carried by a sidepiece 20 severs the band. As block 15 moves forwards, cross-pin 32 rides up cam surfaces 35 on plates 10, 11 and lifts side-piece 20 for retraction by springs 30. A side-piece 19 carrying a block 37 moves with block 15 in the forward movement. Slots 39, 40 for the band are formed in the block 37. . The clamps, sealing block, and block 15 are actuated by air cylinders such as 164, 212, 137, under control of valves which are electromagnetically controlled.
Patent GB-1211928-A (GB)
Title: Photographic materials for the silver dye bleach process
Inventor: VETTER HANS
IPC: C09B43/12
Filed: 1968-12-11
Abstract: 1,211,928. Photographic materials for the silver dye-bleach process. AGFA-GEVAERT A. G. Dec.11, 1968 [Dec.13, 1967], No.58913/68. Heading G2C. A light-sensitive silver dye-bleach silver halide emulsion layer contains a yellow bis-azo-dye of the formula I: in which R 1  represents a hydrogen atom or a halogen atom or an alkyl, alkoxy, acylamino, ureido or alkyl ureido group; R 2  represents a hydrogen or halogen atom or an alkyl or alkoxy group; and X represents carbonyl or the acyl group of a saturated or olefinically unsaturated aliphatic dicarboxylic acid having preferably up to 12 carbon atoms, or of an aromatic (especially benzone) or heteroaromatic dicarboxylic acid such as pyridine dicarboxylic acid or furan dicarboxylic acid. Many examples of the dyes of the formula I are given.
Patent GB-1244965-A (GB)
Title: Nuclear reactor control system
Inventor: MURRELL MICHAEL DAVID
IPC: G21C7/36
Filed: 1967-12-29
Abstract: 1,244,965. Controlling reactors. BRITISH NUCLEAR DESIGN & CONSTRUCTION Ltd. 28 March, 1969 [29 Dec., 1967], No. 59059/67. Heading G6C. In a nuclear reactor control system the control rod 11 is adjusted by the motor 12 in correspondence with the signals developed by the neutron flux sensor, 13, and the flux doubling time sensor, 14. Demanded flux and inverse doubling-time limit signals are injected into the control circuit by devices 16 and 18, respectively. The actual doubling time signal, α m , from the inverter 21 and the limited demanded inverse doubling time signal, α D <SP>1</SP>, are both supplied to the comparator 19 throughput of which is applied to the control law circuit 20. A transfer function is applied, at 20, to generate the signal controlling the speed or switch-on time of motor 12. When the neutron flux is at the required value, the flux-inverse doubling time signal operates to stabilize the flux control feedback system.
Patent GB-1284507-A (GB)
Title: Process for manufacturing sodium phosphates
IPC: C01B25/30
Filed: 1970-12-22
Abstract: 1284507 Sodium phosphates SOC ITALIANA RESINE SpA 22 Dec 1970 [23 Dec 1969] 60970/70 Heading C1A In the continuous production of a mixture of mono- and disodium phosphates for tripolyphosphate manufacture, the desired Na 2 O/P 2 O 5  ratio is maintained by regulating the quantities of phosphoric acid and aqueous sodium hydroxide fed to an agitated reactor in accordance with the analysis of samples taken from the reaction mixture. The samples are titrated with sufficient standard NaOH to convert the phosphoric acid completely to disodium salt, and are then titrated with sufficient aqueous mineral acid to effect complete conversion to monosodium salt. In practice, the sample is diluted with de-ionized water and is titrated by base and acid to pH 8 and 4 respectively. The relative amounts of NaOH and H 3 PO 4  fed to the reactor, which amounts are such that the theoretical degree of acid neutralization lies between the mono- and disodium salts, is a function of the volumes of acid and base used in the sample analysis. The control may be carried out automatically by means of a titrimeter taking samples from the outflow of the reactor, and a memory unit, connected to the titrimeter and feeding back signals to a flow controller regulating the supply of alkali to the reactor. The neutralization reaction may be carried out at 85-90 C.
Patent GB-1247550-A (GB)
Title: PROCESS FOR REFINING BIS-(beta-HYDROXYETHYL) TEREPHTHALATE
IPC: C07C69/82
Filed: 1968-12-23
Abstract: 1,247,550. Purifying bis-(#-hydroxyethyl) terephthalate. TEIJIN Ltd. 23 Dec., 1968 [28 Dec., 1967],No. 61183/68. Heading C2C. Purified bis-(#-hydroxyethyl) terephthalate is obtained by contacting (a) crude bis-(#-hydroxyethyl) terephthalate obtained by reacting terephthalic acid with ethylene oxide, with (b) at least one aromatic compound which is liquid at room temperature at temperatures ranging from 90‹ to 170‹ C., and at a ratio of (a) to (b) such that two separate phases are formed, viz. a solution phase in which the bis(#-hydroxyethyl) terephthalate is dissolved in the aromatic compound and a melt phase consisting mainly of bis (#-hydroxyethyl) terephthalate and a substantial proportion of the impurities contained in the crude product, separating the melt phase from the solution phase and recovering bis (#- hydroxyethyl) terephthalate from the solution phase. Specified aromatic compounds are aromatic hydrocarbons and chlorinated derivatives thereof. Other compounds may be present in the contacting system. The purifying process may be carried out continuously or in a batchwise manner. Examples of this process are given.