baber/WOPTO huggingface dataset:
Patent GB-1459760-A (GB)
Title: Balanced modulator circuits
IPC: H03C1/54
Filed: 1973-12-28
Abstract: 1459760 Amplitude modulators; frequency multipliers; phase detectors SONY CORP 28 Dec 1973 [29 Dec 1972] 59912/73 Headings H3R H3T and H3A A circuit suitable for use as an amplitude modulator, frequency multiplier or a phase detector and for producing a product output signal linearly related to the input signal comprises first and second differential amplifiers Q 1 , Q 2 ; Q 3 , Q 4 , an arrangement Q 5 -Q 8  for supplying a first input signal V 1  differentially to each of the differential amplifiers, an arrangement Q 9 -Q 12  for supplying a second input signal V 2  to at least the input terminals of one amplifier as to cause current to flow in a differential manner between the two amplifiers which together constitute a composite differential amplifier in respect of the second signal V 2 . When used as an amplitude modulator, a balanced output is obtained at terminals 2, 3. The circuit may be used as a phase detector by applying two input signals at the same frequency but differing in phase. Figs. 2, 6 (not shown) relate to similar circuits with slight modifications in respect of the components and the manner of application of the input signals. Fig. 7 relates to a modification of the circuit for use as a frequency multiplier in which only one signal V 1  is used. The signal V 1  is applied via Q 5 -Q 8  in a differential manner to each of the amplifiers. The currents flowing through resistors 12, 13 are split in a differential manner by the signal V 1  and cause proportionate voltages to be developed across the base-emitter electrodes of Q 19 , Q 20 . These voltages are applied via Q 9 -Q 12  for causing the transistors Q 1 -Q 4  to operate as a composite differential amplifier. The second or higher order harmonic signal components may be derived from the output at 2, 3.
Patent GB-1456660-A (GB)
Title: Process for polymerising tetrahydrofuran
IPC: C08G65/00
Filed: 1973-12-28
Abstract: 1456660 Polymerizing tetrahydrofuran KAO SOAP CO Ltd 28 Dec 1973 [29 Dec 1972] 59947/73 Heading C3R Tetrahydrofuran is polymerized in the substantial absence of water and in the presence of (a) a salt of an acid having a higher strength than 100% sulphuric acid, the salt being soluble in tetrahydrofuran, (b) an organic acid anhydride and (c) concentrated sulphuric acid, at -40 to +80 C., and the terminal groups of the polymer are hydrolysed. In examples the salts are sodium perchlorate, magnesium perchlorate, sodium trifluoromethane sulphonate, lithium perchlorate, barium perchlorate, silver trifluoromethane sulphonate and methanesulphonic acid methylamine salt and the anhydrides are acetic anhydride, orthosulphobenzoic anhydride and succinic anhydride; hydroxyl-terminated polymers are obtained by hydrolysis with alcoholic sodium hydroxide.
Patent GB-1329153-A (GB)
Title: Electrodes for electrochemical processes
IPC: C23C16/40
Filed: 1970-12-17
Abstract: 1329153 Electrolysis electrode SOLVAY ET CIE 17 Dec 1970 [9 Jan 1970] 60048/70 Heading C7B [Also in Division C1] An electrode for electro-chemical processes comprising a conductive and corrosion resistant support having a coating fixed on at least part of its surface which consists substantially of at least one oxide of ruthenium, rhodium, palladium, osmium, iridium or platinum is made by impregnating the cleaned support with a layer of an anchoring material which comprises at least one oxidizable compound in the places where the coating is to be fixed, exposing the impregnated support to an atmosphere containing at least one compound of the above metals in the gaseous state which compound is decomposable into a stable and solid oxide on contact with the anchoring layer and subjecting the coated support to a heat treatment in an oxygen containing atmosphere between 200‹ and 550‹C. The support is preferably made of titanium, zirconium, niobium, tantalum, tungsten or an alloy consisting mainly of at least one of these metals. The anchoring layer may contain aromatic compounds, olefins, alcohols, aldehydes, amides, ethers, sulphides, hydrides, plasticizers for polymers, oils, e.g. coriander oil, paraffins, silicone oils or silicone greases or mixtures of these substances. The anchoring layer may be applied in solution or dispersion by painting, swilling over the surface, spraying or dipping. The deposition of the stable solid oxide is preferably carried out at a temperature between 20 and 300‹ C. The sequence of impregnating the support, depositing the oxide and thermal treatment may be repeated several times and preferably in the last sequence of operations the thermal treatment is carried out immediately after the impregnation, omitting the intermediate stage of oxide deposition. The Examples describe the decomposition of gaseous ruthenium tetraoxide to form a black deposit of ruthenium dioxide on the electrode. The electrode is suitable for use (a) as an anode in the electrolysis of aqueous solutions of alkali metal halides,  e. g. in producing Cl 2 , (b) in the manufacture of per-salts and (c) in the oxidation of organic compounds.
Patent GB-1423520-A (GB)
Title: Manufacture of magnetic transducing heads
IPC: G11B5/187
Filed: 1972-12-29
Abstract: 1423520 Magnetic heads DATA RECORDING INSTRUMENT CO Ltd 14 Dec 1973 [29 Dec 1972] 60152/72 Heading G5R A polepiece assembly for a magnetic head is made by depositing a layer of electrically conductive material 5, Fig. 4, on a magnetic element 1, consisting of a pair of magnetic members spaced apart by a non-magnetic layer 4, to form a closed loop through which the magnetic layers and spacer 4 extend, then mounting the element 1 in a block of non-magnetic material, and shaping the assembly so formed to provide a planar face 12 opposite to a working face 13 in which face 13 the element 1 forms a pair of pole tips separated by spacer 4 and the closed conductive loop 5 forms an eddy current screen circumscribing the pole tips. Two strips of ferrite (2), (3), Fig. 1, 2 (not shown), separated by gap-forming material 4, such as glass, are plated with a conductor 5, such as copper, to form said conductive loop. Four such assemblies may be located in grooves in two non- magnetic blocks, e.g. of glass ceramic, separated by a magnetic plate 10 between non-magnetic plates 8, 9, the components of this combined assembly being secured together by glass or resin adhesive bonding and such assembly being cut into slices along planes perpendicular to gap material 4 to produce two-track read/ write polepiece assemblies. Yoke assemblies 20 containing four ferrite yokes 14, Fig. 7, surrounded by copper loops and located in two non-magnetic blocks, e.g. of glass ceramic, separated by a magnetic plate 19 between non- magnetic plates 18, (17), Fig. 6 (not shown), are produced in a similar manner. Two grooves 22 are then formed in the yoke assembly to give the yokes 14 a U-shape having limbs 23, and at least one limb of each yoke is isolated from the surrounding material of the non-magnetic block by forming grooves 24, 25 therein. A coil 26 is located around the or both such isolated limbs 23 of each yoke. The polepiece assembly, Fig. 4, is then mounted with its planar face 12 in contact with planar face 21 of the yoke assembly, Fig. 7, so that the rear ends of the polepieces 1 are bridged by the yokes 14, the conductive material around the yokes contacting that around the polepieces 1 and being earthed via a conductive sheet (27), Fig. 8 (not shown), in contact with the bottom face of yoke assembly 20. The polepieces 1 may previously have been machined from the face 12 of the polepiece assembly to reduce the depth of the polepieces at the gap 4. The polepiece elements may alternatively be shaped to the required profile prior to plating and assembling in the non-magnetic blocks. The magnetic cores 1, 14 may be formed of Mu-metal (Registered Trade Mark) laminations instead of ferrite.
Patent GB-1386612-A (GB)
Title: Clockwork mechanism
IPC: F03G1/02
Filed: 1971-12-28
Abstract: 1386612 Spring-operated mechanism; metallic springs FISHER-KARPARK Ltd 5 March 1973 [28 Dec 1971] 60261/71 Heading F2S [Also in Division G3] In a winding drum for a clockwork mechanism for operating a car park meter, one end of a main spring a is attached to a spindle B (which extends along the axis of the winding drum) by a slot a<1> receiving a pin b<1> on the spindle, the pin being rotatable to swing an elongated head b<2> through 90 degrees; the other end of the spring a is attached to a tag on the drum. The slot a<1> may be pear-shaped.
Patent GB-610333-A (GB)
IPC: G07B1/02
Abstract: 610,333. Ticket-issuing machines for totalizators. UNION TOTALISATOR CO., Ltd., and HANDLEY, J. Dec. 16, 1945, No. 30786. [Class 40 (i)] [Also in Group XIX] The ticket printing and issuing machine of Specifications 591,223 and 591,260, [both in Group XIX], is modified so that three " reverse forecast bets " for any three chosen competitor numbers may be registered on a single ticket. The stake row of the keyboard is provided with four extra keys 1xxx, 2xxx, 3xxx and 4xxx, Fig. 2. When such a ticket is desired, the required keys of the stake row, the first selection row and the second selection row are depressed and since the totalizator circuit is modified as shown in Fig. 2, one unit is added to the corresponding six combination aggregators and six units are added to the grand total forecast aggregator. The stake cam plate 1 of the machine of the above Specifications is modified as shown in Fig. 8 to ensure correct operation of the machine counters and the stake type wheel is provided with the necessary additional type.
Patent GB-1293540-A (GB)
Title: Preparation of diaryl ethers and thioethers
Inventor: PAYNE KENNETH RICHARD
IPC: C07C43/20
Filed: 1968-12-31
Abstract: 1293540 Diaryl ethers and thioethers COALITE & CHEMICAL PRODUCTS Ltd 31 Dec 1969 [31 Dec 1968] 61979/68 Heading C2C A diaryl ether or thioether is prepared by reacting a sodium aryl compound of the formula with an aryl compound of the formula in a polar organic solvent, in which Ar and Ar<SP>1</SP> are aryl groups which may be the same or different, Z is -O-or -S- and X is a nuclear, replaceable halogen or pseudohalogen.
Patent GB-769338-A (GB)
Abstract: 769,338. Calculating-apparatus. MICHELL, R.B., and DECCA RECORD CO., Ltd. Aug. 17, 1955 [Aug:. 24, 1954], No. 24641/54. Class 106(1). An astro-navigational apparatus for the reduction of star sights to position lines, taking account of the observer's own motion, comprises a plotting chart, 10, a time'element 17 movable in an E-W direction across the chart, an own motion arm 20 pivotally carried on the time element, an altitude arm 23 pivotally carried on the own motion arm 20 and a graticule 12 rotatable with respect to the chart about a centre on the line of movement of the time element. In the apparatus shown, the chart is transparent and the graticule is mounted below the chart to rotate about the centre of a compass rose 11 marked on the chart. The time element 17 is guided by a diametral slot 15 in the chart and the pivotal connections of. the arms 20 and 23 are adjustable along slots in the arms.. Clamps secure the parts in their positions of adjustment. The time element 17 is moved in westerly direction by one degree for every four minutes, in order to correct for change in local hour angle of the observed star from a zero instant, and a suitable time scale 19 is initially marked, according to the approximate latitude, by the observer. For convenience in abstracting altitude data from tables, successive zero instants are taken at fourminute intervals, the slide 17 being moved to the time from zero of each observation. The own motion arm is then set in the direction of movement of the observer and the pivot 21 of the altitude arm adjusted along a mile scale on the arm 20 according to the distance travelled since the zero time of the first observation. Next, the altitude arm 23 is adjusted in the direction of the azimuth of the observed star, by rotation of the graticule to the bearing on the compass rose 11 and bringing the altitude arm into alignment. Finally, the altitude arm 23 is positioned so that the pivot 21 is set to an altitude scale on the arm according to the tabulated altitude of the star at the zero instant. The position line P.L. then lies across the arm 23 at the scale position corresponding to the observed altitude. A succession of such positions, corresponding to successive fourminute observations, are marked on the chart and used in drawing the position line. Further position lines to locate the fix are found by further series of observations on other stars. Clock-driven mechanism may be provided for moving the time element 17 along the slot 15 and returning it automatically at four-minute intervals.
Patent GB-2024075-A (GB)
Title: Method of providing sheet metal with an anchorage for an appendage
IPC: B65D25/32
Filed: 1978-07-04
Abstract: In the manufacture of paint cans or other sheet metal articles, anchorages 24 for handles or other appendages are provided by plunge-piercing metal 10 to form tubular wall portions 14 around the holes and setting in the apertures thus provided headed rivets 20, the heads 18 of the rivets being larger than said tubular portions and abutting the free ends of such portions. In the manufacture of paint cans, such anchorages can be made with the metal in the flat condition and a handle, for example, with keyhole slots in it attached to the filled can at the point of sale. <IMAGE>
Patent GB-2028670-A (GB)
Title: Folding structures
IPC: A47D13/00
Filed: 1978-08-25
Abstract: A folding structure, e.g. an item of play equipment, includes two non- folding members or walls (32) which are connected by two separate folding wall structures (36), (44) each including two non-folding parts, an intermediate hinge e.g. (40) connecting such parts, and edge hinges connecting such parts to the non-folding members or walls (32). At least one of the folding wall structures (36) has its hinge connections positioned so that it serves as an overcenter toggle for holding the two non-folding members (32) in the expanded position while the other structure (44) serves to limit the movement of the non-folding members (32) away from one another. <IMAGE>
Patent GB-2007145-A (GB)
Title: Busbar and Production Method Therefor
IPC: H01B13/00
Filed: 1978-10-09
Abstract: The busbar comprises at least one conductor bar constituted by at least two strip conductors (1, 2) glued to an interposed insulating tape (3) and potted in a covering of resin (6). The method consists in glueing the conductor 5 to the tube and then immersing the assembly in a bath of resin powder after preheating the assembly whereby the powder adheres to it. After cooling the assembly is placed between the plates of a press and reheated to polymerise the resin and provide a desired resin thickness. <IMAGE>
Patent GB-2008142-A (GB)
Title: Conversion of sparingly soluble quinoline derivatives to a pigmentary form
IPC: C09B25/00
Filed: 1978-10-13
Abstract: The invention relates to a process for converting sparingly soluble quinoline derivatives of the formula   <IMAGE> where R<1> is hydrogen or alkyl of 1 to 4 carbon atoms, one of the radicals R<2>, R<3> and R<4> is   <IMAGE> and the others are hydrogen, but R<4> may also be chlorine, bromine, methyl or ethyl, Y is a halogen substituted 1,2- arylene e.g.   <IMAGE> (where X is chlorine or bromine and n is a number from 2 to 4), tetrabromo-1,2- phenylene or tetrachloro-1,2-phenylene and Z is unsubstituted or halogen- substituted 1,2-phenylene, 1,2- naphthylene, 2,3-naphthylene, 1,8- naphthylene or 2,2'-biphenylene, into a pigmentary form by milling the crude pigment in aqueous suspension in a high-speed stirred ball mill until the primary particles have a size of 0.1  mu m or less. The pigments obtained give very deep and pure colorations and are easily dispersible in plastics.
Patent GB-2032166-A (GB)
Title: Battery Holders
IPC: H01M2/10
Filed: 1978-10-19
Abstract: A battery holder for a standard battery having differently sized terminals comprises a resiliently mounted insulating terminal plate assembly 2 provided with holes to match the battery terminals 5 and 6 and electrical contact members behind the holes with which the battery terminals can only make contact when inserted through the holes with the battery the correct way round. A backstop 3 is positioned to hold the opposite face of the battery and preferably the distance between the terminal plate assembly 2 and the backstop 3 is slightly less than the length of the battery so that the assembly 2 must be moved against its resilient mounting to accommodate the battery. (Fig. 2). <IMAGE>
Patent GB-2008442-A (GB)
Title: Cleaning root crops
IPC: A01D33/08
Filed: 1978-11-21
Abstract: Apparatus for transporting and cleaning root crops, such as sugar beet or fodder beet, consists of a loader bucket (20) suitable for mounting on a tractor, the bucket having a single rotatable shaft (32) with means such as radial rubber paddles (35) on the shaft for agitating the roots in the bucket so as to knock soil off the roots, the part of the principal bucket wall below the shaft having apertures through which the soil can fall. The principal bucket wall can be constructed as a framework, for example of parallel tubes (26) with spaces (25) between the tubes. <IMAGE>
Patent GB-2038652-A (GB)
Title: Oil-water separator
IPC: C10G53/00
Filed: 1978-12-22
Abstract: A mixture containing crude oil, water, solids and not more than 20% by volume of gas is separated into an oil stream containing less than 1% by wt of water and a water stream containing less than 100 ppm of oil. The mixture is passed through a filter 4 to remove solids and then through at least one coalescer vessel 6 containing a coalescer element. The mixture has gas dissolved therein to reduce its viscosity and the separation is carried out under pressure to prevent the gas in solution forming bubbles. The oil and water streams can each be cleaned up by passing through further coalescers 8, 10. A portion of filter 4 can be backwashed while another portion is still filtering, the backwashing being effected by using the oil stream or the feed mixture. Filter 4 can be a screen of polypropylene or polyester fibres, polyamide, stainless steel, or sand, with axial or radial flow. Coalescer element is an annular, radial flow element of pleated paper, glass fibres or other fibrous material. The oil and water settles out under gravity in vessel 6. A separator to reduce the gas content may precede filter 4. <IMAGE>
Patent GB-2016090-A (GB)
Title: Stirling cycle apparatus
IPC: F01B3/04
Filed: 1979-03-06
Abstract: An engine or, as shown, heat pump has a reciprocatory compressor 44 and a displacer 51 operative upon a working fluid, a rotatable shaft 42, and drive means to effect translation of the rotational movement of the rotatable shaft to the compressor and displacer, the drive means comprising twin annular undulatory cam tracks 47, 48 on the shaft, engaged by twin rollers 49, 50 carried by the compressor piston 46, and grooves 55, 56 on the shaft engaged by rollers 57, 58 carried by a member 54 fast with the displacer piston 51. To dynamically balance the piston 46, a balance weight assembly 59 is provided. One or both sets of grooves may be formed on the pistons, and the rollers carried by the shaft. <IMAGE>
Patent GB-2017160-A (GB)
Title: Wood Preservative Compositions
IPC: B27K5/02
Filed: 1979-05-08
Abstract: A wood preservative composition comprises a solution of a wood preserving agent in an organic solvent, includes a dye which is inherently insoluble in the organic solvent but is rendered soluble in the said solvent such that the dye is present in the composition during impregnation of wood therewith whereupon the dye becomes insoluble in the solvent. The dye does not bleed into most types of wood paint when such a paint is subsequently applied to the impregnated wood. The dye may be rendered soluble in the organic solvent either by including in the composition a solvent for the dye, which solvent is miscible with the main solvent, or by chemically modifying the dye to a form which is soluble in the organic solvent but which reverts to the insoluble form when wood is impregnated with the composition. A method of colouring wood using the composition is also provided.
Patent GB-2024506-A (GB)
Title: Ohmic contacts to n-type group iii-v semiconductors
IPC: H01L21/28
Filed: 1979-06-08
Abstract: A nonalloyed ohmic contact (110-112, 120-122) to an n-type Group III(a)-V(a) compound semiconductor body (102-104) is formed by epitaxially growing a Group III(a)-V(a) n++-layer (106-108, 106'-108') doped to at least 1019 cm-3 between the semiconductor body and a metal contact layer (110-112). The metal layer forms an ohmic contact without requiring heating above the eutectic temperature. In order to avoid contamination of the metal-semiconductor interface, a metal contact layer (120-122) may be deposited in situ after MBE growth of the n++-layer. This technique results in both a metal-semiconductor interface with smoother morphology and also an ohmic contact without heating above the eutectic temperature. These procedures are specifically described with reference to the fabrication of GaAs FETs.
Patent GB-2054817-A (GB)
Title: Heat exchanger plate
IPC: F28F3/08
Filed: 1979-07-26
Abstract: In a plate heat exchanger, a heat exchange medium is normally fed via a duct-forming hole 2 in one corner of the plate and has to be distributed over the width of a primary heat exchange zone 6. In order to achieve an improvement in this distribution, with a minimum pressure drop in the distribution zone 7, a distributor is attached to the zone 7, which is otherwise flat. The distributor 8 defines a series of ducts fanning out from the hole 2, some of the ducts being defined between the crests of corrugations on the distributor 8 and the plate illustrated, and some being defined between the troughs of the distributor and the next plate in the pack. <IMAGE>
Patent GB-2028229-A (GB)
Title: Filter cloth made of needle felt for bag filter type dust collector
IPC: B01D39/08
Filed: 1979-07-27
Abstract: A filter cloth 3 for a bag filter type dust collector comprising: a woven core fabric 1 and a web 2 of synthetic fiber arranged on each surface of the core fabric; the core fabric and the webs being closely entwined to form a filter cloth by needling; each of the webs comprising synthetic fiber filaments having a thickness of 0.5 to 1.5 denier; the webs being such as to provide a total weight of 350 to 450 g/m<2> for the core fabric and the webs; at least one of the surfaces of the filter cloth being subjected to a smoothing treatment; said filter cloth having, through said needling and said smoothing, a thickness of 0.8 to 1.2 mm, an average micro-pore diameter of 10 to 20  mu m, a void ratio of 70 to 80%, and a permeability of 10 to 15 cc/cm<2>/sec at a pressure difference of 12.7 mmAq. <IMAGE>
Patent GB-2032897-A (GB)
Title: Ammoniating Phosphoric Acid
IPC: C01B25/28
Filed: 1979-09-17
Abstract: In reacting ammonia with phosphoric acid in a reaction vessel to form a reaction mixture comprising ammonium phosphate, the reaction mixture is allowed to foam whereby there is formed a foaming reaction mixture comprising steam and ammonium phosphate; and steam and ammonium phosphate are discharged from the reaction vessel through a common outlet. Preferably the ammoniation is carried out under pressure and the foam reaction mixture is discharged via a spray nozzle into a zone of lower pressure where water is evolved spontaneously, e.g. by flash evaporation as the product is sprayed, to give a solid particulate product.