baber/WOPTO huggingface dataset:
Patent GB-1436908-A (GB)
Title: Phase detector apparatus
IPC: H03L7/091
Filed: 1974-09-11
Abstract: 1436908 Phase comparators and a.f.c.; analogue gates CINCINNATI MILACRON Inc 11 Sept 1974 [13 Sept 1973] 39680/74 Headings H3A and H3T A phase comparator for comparing two signals 12, 22 having positive and negative going transitions comprises: a signal generator 50 responsive to transition of one sense of signal 12 to generate a reference signal whose magnitude changes continuously between transitions between first and second levels; a first sampling circuit 56, 58, 60, 62, 64, 66 which samples the reference signal in response to transition of the other sense of signal 12 to produce a control sginal which adjusts the signal generator 50 to cause the reference signal to have a predetermined amplitude at points in time corresponding to said transition of the other sense; and a second sampling circuit 74, 76, 78, 84, 86, 88 for sampling the reference signal in response to transitions of the signal 22, to produce an output 24 representative of the phase difference between the input signals 12, 22. The first sampling circuit thus produces a control signal for locking the reference signal to the first input signal 12. The input signal 12 is applied to a first monostable 48 which triggers generator 50 to produce a ramp signal, and to a second monostable 52 from which two antiphase outputs are provided to control cascaded gate circuits 58, 64. During one period, gate 58 is open and gate 64 is closed and the voltage across capacitor 60 follows the ramp signal. During a second period, gate 58 closes and gate 64 opens to transfer the charge from capacitor 60 to capacitor 66, the voltage across this being integrated in 67 to provide the control signal. The second input signal is fed to a further monostable 70 which similarly produces antiphase control signals for cascaded gates 76, 86. Each gate circuit comprises a transistor 94 which is turned off by a positive level of the control signal to turn off transistors 96, 98, thus turning on FETs 100 to open the gate. Conversely negative levels of the control signal causes transistors 94, 96, 98 to turn on and FETs 100 to turn off.
Patent GB-1502235-A (GB)
Title: Portable cooking unit
IPC: A47J37/07
Filed: 1976-09-27
Abstract: 1502235 Portable grills SON OF HIBACHI Ltd 27 Sept 1976 [10 Nov 1975] 39981/76 Heading A4D A solid fuel portable cooking unit comprises two dished fuel trays 22 hinged to an intermediate frame 10 and able to be moved from the horizontal cooking position shown to a folded position Figs. 2, 3, (not shown) where the trays are vertical and adjacent each other, the trays having open ends providing a flue when the trays are folded, and perforate grills 50 supported in each tray. The unit provides a grill when opened horizon - tally and the folded position is used for lighting the fuel (using a kindling drawer 58 mounted below the frame) and for extinguishing the fuel (when the kindling drawer receives the burnt ash). Support brackets 42 adjustably position the grills 50 and a damper 68 having a clip 70 and handle 72 may be used (as shown) to handle the grills 50 or Figs. (2, 3) to close the top of the flue when the unit is folded. It is stated that the unit may be mounted on wheels and that the space in the kindling drawer may be used as an oven.
Patent GB-1337027-A (GB)
Title: Apparatus for filtering and or purifying fluids
IPC: B01J47/10
Filed: 1971-08-26
Abstract: 1337027 Treating waste waters U PASSAVANT AG [trading as PASSAVANT-WERKE] 26 Aug 1971 [26 Aug 1970] 40152/71 Heading C1C [Also in Division B1] Apparatus for separating solid or fluid matter from fluids i.e. waste water, comprises a housing 1 containing a bed 2 of granular material, e.g. sand, gravel, coke, slag, active carbon or silica gel which retains the matter to be separated by filtration, ion-exchange or absorption. The bed is continually moving downwards, fresh materal being added at the top 14 whilst material is removed from the bed by sweeper blades 12, mounted on conical shaft 10, which sweep the material off annular support surfaces 3, 4, 5 and 6 into the empty conical space formed by these support surfaces, from whence it is removed into duct 20 by sweeper 19. Fluid to be treated enters down duct 15 and issues into the empty conical space under cone 7, the fluid then flowing up in countercurrent to the bed and being removed at 16. The granular material removed from the bed is drained of fluid in vertical screw 25 and is then led away to further treatment 30, e.g. disposal, or regeneration.
Patent GB-1199925-A (GB)
Title: Improvements in or relating to Noise Reduction
Inventor: HINKSMAN ERNEST ALAN
IPC: G10K11/178
Filed: 1966-09-08
Abstract: 1,199,925. Noise reduction. MIDLAND TRANSFORMER CO. Ltd. 22 Nov., 1967 [8 Sept., 1966], No. 40157/66. Heading H4J. In reducing noise emitted by a source, sound waves are picked up adjacent the source, a signal is generated from the sound waves, and sound waves are reproduced adjacent the source at approximately the same amplitude and frequency as the emitted sound waves and approximately 180 degrees out of phase with the emitted sound waves. The apparatus comprises, adjacent a source 10 (Fig. 1), a microphone 11 and moving coil loud-speaker 15 coupled by an amplifier 13. Phase change occurs in the amplifier 13 or by making appropriate loud-speaker connections. Alternatively, adjacent a source 16 (Fig. 2) are a microphone 17 and " Stentorphone " device 19 coupled by an amplifier 18 in which phase change occurs. In the device 19 pulsating blasts of compressed air from a source 20 are released into a horn by a valve 22 vibrated by electromagnetic means (not shown) in sympathy with the signal to be reproduced. Reduction of noise caused by a mechanical saw or by aircraft at an airport may be effected.
Patent GB-1434204-A (GB)
Title: Method for wet composting organic sludges
IPC: C02F11/08
Filed: 1973-08-24
Abstract: 1434204 Wet composting; composting sludge and refuse H GUJER 24 Aug 1973 [25 Aug 1972] 40195/73 Headings C1B and C1C [Also in Division B1] Aqueous organic sludge is composted by treatment with a gas containing oxygen in a closed vessel which is provided with means of cooling the contents of the vessel to a temperature not below the pasteurization temperature. The vessel may operate at a pressure of up to 6 atm. Oxygen-enriched air or pure oxygen may be employed. Apparatus suitable for the process is also described, wherein a number of concentric rotating drums are provided with scoops and means for conveying the sludge and gas from the inner drums to the outer drums. Fig. 1 shows a closed drum 1 rotatable about a horizontal axis. A second drum 4 is mounted within drum 1. Scoops 3 are fixed to the inside surface of drum 1, as shown in Fig. 4, which is a crosssection taken along line IV-IV of Fig. 1. Scoops 3 are also mounted on the sides of separating walls 3b which are attached to the drum shell and at right angles to drum 1. Sludge flow between chambers occurs through openings 3d. Figs. 2 and 3 (not shown) illustrate a rotatable wet composting container and a stationary wet composting container.
Patent GB-1175890-A (GB)
Title: Fabrication of Spherical Metallic Particles
IPC: B22F1/148
Filed: 1967-09-04
Abstract: 1,175,890. Casting processes; making metal spheres. OLIN MATHIESON CHEMICAL CORP. 4 Sept., 1967 [8 Sept., 1966], No. 40280/67. Headings B3A and B3F. [Also in Divisions C7 and E1] A process for obtaining spherical metal particles comprises providing powdered metal preferably having a particle size below 100 mesh, providing less than 10% by weight of a binder which volatilizes above 150 and 200 F. below the melting point of said metal powder, admixing said metal powder and binder in the presence of from 5 to 35% by weight of moisture to form agglomerated masses of metal powder and binder, coating said masses with a weld preventing material, heating said coated masses in a protective atmosphere to a temperature above the volatilization temperature of said binder, and heating further in a protective atmosphere above the melting point of said metal powder to form a plurality of coherent metal spheres. The spherical particles may contain metallic additives which do not alloy and also non-metallic additives. The metal may be copper or copper alloy, aluminium or aluminium alloy, ferrous materials, noble metals, precious metals, titanium, magnesium, zinc, nickel, beryllium, solders &c. The binder may be a brazing flux, polyethylene glycol, metal stearates, stearic acid, organic binders, gum &c. The moisture may be provided by water, alcohols, acetone, toluene, benzene, naptha, carbon tetrachloride, trichlorethylene &c. The weld preventing material may be talc, lime, graphite, alumina, titanium dioxide, zirconium oxide, flour, non-reducible oxides, and mixtures thereof. The protective atmosphere may be provided by hydrogen, carbon monoxide, dissociated ammonia, nitrogen, argon, helium and may be a neutral or a reducing gas.
Patent GB-1461364-A (GB)
Title: 4-pyridinio-5-pyrazolone salts and their preparation
IPC: G03C7/384
Filed: 1974-09-16
Abstract: 1461364 4 - Pyridinio - 5 - pyrazolone salts FUJI PHOTO FILM CO Ltd 16 Sept 1974 [17 Sept 1973] 40302/74 Heading C2C [Also in Division C4] Novel 4- pyridinio - 5 - pyrazolone salts having one of the general formulµ wherein R<SP>1</SP> represents a hydrogen atom, a sulphamoyl group, a carboxy group or a group having at most 40 carbon atoms and selected from alkyl, alkoxycarbonyl and aryl groups; R<SP>2</SP> represents a hydrogen atom, a hydroxy group, an amino group, a carboxy group, a sulpho group or a group having at most 45 carbon atoms and selected from alkyl, aryl, alkoxy, aryloxy, alkoxycarbonyl, alkylamino, cycloalkylamino, dialkylamino, arylamino, diarylamino, acylamino, diacylamino, N-alkylacylamino, N- aryacylamino, ureido and carbamoyl groups; R<SP>3</SP>, R<SP>4</SP> and R<SP>5</SP> each represents a hydrogen or halogen atom, a hydroxy group, a carboxy group, an amino group, a sulphonamido group, a sulpho group, or a group having up to 20 carbon atoms, and selected from alkyl, alkoxy, alkoxycarbonyl, aralkyl, aryloxy, carbamoyl, carbamido, acylamino, alkylsulphonamido, arylsulphonamido, alkylamino and arylamino groups, or R<SP>3</SP> and R<SP>4</SP> can together represent the atoms completing a cycloaliphatic, aromatic or heterocyclic ring; and X- represents an anion, may be prepared by halogenating a 1,3-disubstituted-5-oxo-2-pyrazoline of the formula and reacting the resultant product with an N-heteroaromatic compound of the formula The compound so obtained may be subsequently treated so as to exchange the halide ion for another anion. The halogenation is suitably carried out at a temperature of from 0‹ to 20‹ C. in the presence of a solvent. The novel compounds are suitable intermediates for the production of colour couplers for use in colour photographic light-sensitive materials as described and claimed in Specification 1,457,056.
Patent GB-1446033-A (GB)
Title: Fluid supply control for dental hand pieces
IPC: A61C1/00
Filed: 1973-08-24
Abstract: 1446033 Dental handpieces SIEMENS AG 24 Aug 1973 [25 Aug 1972] 40338/73 Heading A5R Dental handpieces 1,.2, 3 are supplied with pressurised air and pressurised water from respective common sources 7, 8 via passages in an assembly of interconnected modular control units 11 .... 13. Unit 11 I comprises pressurereducing valves 25 .... 27, and supplies air and water to spray handpiece 3; in addition, air and water are supplied to unit 12 via connectors 15 ....17 and thence to unit 13 via connectors 18 .... 20; further connectors 21 .... 23 lead to a pressure-indicating block 14. Units 12, 13 each comprise a first electromagnetic valve 28, 32 which supplies air to drive a turbine in handpiece 1 and to cool an electric motor in handpiece 2; a second electromagnetic valve 29, 33 to provide spray air to the respective handpieces; and a third electromagnetic valve 30, 34 to control respective water valves 31, 35 to supply water to the handpieces, and to provide suction return therefor. The units comprise parallelepipedic blocks (Figs. 2, 3, not shown) having fluid passages drilled, moulded or cast therein, the valves, except for the parts required for their operation, being sunk in the blocks. The blocks are interconnected by hollow plugin spigots. Unit 12 has attached thereto an insulating terminal board to provide connections to the electromagnetic valves, handpiece 2, and other electrically operated devices.
Patent GB-954247-A (GB)
Title: Electron multiplier
IPC: H01J43/24
Filed: 1961-11-10
Abstract: 954,247. Electron multipliers; electrode materials. BENDIX CORPORATION. Nov. 10, 1961 [Nov. 15, 1960], No. 40373/61. Heading H1D. An electron multiplier comprises at least one magnetic member 20 having a surface 24 with north and south poles along opposite longitudinal sides of it, means for establishing a continuous voltage drop along said surface, another member 22 with a surface 26 facing said first surface, means for establishing another continuous voltage drop along said second surface such that opposite points of both surfaces are at unequal electric potentials to create an electric field whose equipotential lines are oblique to said surfaces, at least one of said surfaces 26 further being secondarily emissive, so that under the joint action of said electric and magnetic fields secondary electrons are accelerated along said secondarily emissive surface. Preferably both members 20, 22 are magnetic with like poles facing each other, composed of rectangular plates of ferrite, and polepieces 34, 36, Fig. 3, may be provided to reduce the reluctance of the magnetic circuit, being separated from the magnets by strips 30, 32 of trifluorochloroethylene. Positive ions or ultra violet radiation incident through a window 40 strike the cathode 28, releasing secondary electrons which follow a cycloidal path 57, increasing in number with each impact with the surface 26, and are finally collected on the anode 42. The secondary emissive material is preferably antimony tin as described in Specification 954,246 and when used to detect ultra violet radiation the cathode 28 is preferably of tungsten, nickel or platinum.
Patent GB-1480565-A (GB)
Title: Copolymers of ethylene
IPC: C09J123/08
Filed: 1975-10-03
Abstract: 1480565 Ethylene copolymers RUHRCHEMIE AG 3 Oct 1975 [10 Oct 1974] 40626/75 Heading C3P A quaternary copolymer consisting of (i) 70- 90 parts by weight ethylene, (ii) 0À5-15 parts by weight of a C 1 -C 8  alkyl ester of an unsaturated C 3 -C 6  monocarboxylic acid or of the vinyl ester of a saturated C 1 -C 3  monocarboxylic acid, (iii) 0À5-10 parts by weight of the amide of an unsaturated C 3 -C 6  monocarboxylic acid, and (iv) 0À1-5 parts by weight of a vinyl ether containing up to 10 carbon atoms, the sum of the parts by weight being 100 is prepared by reacting the above monomers in the necessary proportion at a pressure of 400-4000 bars and at 110-350 C. in the presence of a catalytic quantity of a free radical initiator, e.g. oxygen. In the specific examples copolymers are formed from: ethylene, tert-butyl acrylate, acrylamide and one of isobutyl vinyl ether, n-butyl vinyl ether and ethyl vinyl ether (1, 2, 3); ethylene, tert-amyl acrylate, acrylamide, and n-butyl vinyl ether (4); ethylene, n-butyl acrylate, acrylamide and n-butyl vinyl ether (5); and ethylene, vinyl acetate, methacrylamide and isobutyl vinyl ether. The copolymer as a dispersion or a solution may be coated on metals, ceramic materials, textiles, wood, paper, leather and plastics materials to form a film which may be used as an adhesive for lamination with polyolefins or rubber.
Patent GB-1333349-A (GB)
Title: Process for the production of beta-chloroethyl-trichlorosilane
IPC: C07F7/12
Filed: 1972-09-01
Abstract: 1333349 Beta - chloroethyl - trichlorosilane CIBA-GEIGY AG 1 Sept 1972 [3 Sept 1971] 40656/72 Heading C3S Beta-chloroethyl-trichlorosilane of the formula Cl-CH 2 CH 2 -Si(Cl) 3  is prepared by the addition of hydrogen chloride to vinyl-trichlorosilane at elevated pressures and temperatures below 90 C. in the presence of a Lewis acid. Pressures of 10 to 30 bar and temperatures of 0 to 40 C. are preferred. Specified Lewis acids are aluminium chloride and bromide, ferric chloride, antimony pentachloride and pentafluoride, tin tetrachloride, zinc chloride and boron trifluoride. Uses.-As intermediates in the preparation of plant growth regulants such as beta-chloroethyl-tris-(4<SP>1</SP>-chlorobenzoxy)-silane.
Patent GB-911141-A (GB)
Title: Recessed shoe heel
IPC: A43B21/00
Filed: 1960-11-28
Abstract: 911,141. Footwear heels. FABIAN, L. Nov. 28, 1960 [Dec. 17, 1959; Nov. 3, 1960], No. 40852/60. Class 17 (2). A shoe heel and counter stiffener are moulded in one piece 20, the counter stiffener merging smoothly into the heel, the inside of the counter stiffener being shaped to conform to the outside of the heel end of the shoe, and the walls 28 of the counter stiffener being inclined inwardly so as to grip the wearer's heel. The counter stiffener is preferably cemented to the outside of the heel portion of the shoe upper, and the heel and counter unit may contrast in colour with the rest of the upper. The unit may have a tongue 29 to reinforce the shoe shank, or it may extend to the ball of the foot, forming a type of wedge heel 38 with the upstanding wall extending the full length of the unit.
Patent GB-1525982-A (GB)
Title: Transducers and parts therefor
IPC: G01L9/00
Filed: 1976-10-04
Abstract: 1525982 Differential pressure transducers TEKFLO Ltd 4 Oct 1976 [7 Oct 1975] 41104/75 Heading G1N A differential pressure transducer comprises two cylindrical ferromagnetic members 1, 2 Fig. 1 assembled on either side of a circular stainless steel diaphragm 16 Fig. 3 formed with a thick edge 3. The facing surfaces of members 1, 2 are recessed to carry a coil 9, 9a embedded in an epoxy resin, the recesses being covered by caps 12, 12a leads 14, 14a from the coils are brought out through passage 15 which are also filled with the epoxy resin, and a Zener diode arrangement is connected across the terminals of each coil to prevent a higher voltage appearing at open circuit. The test pressurers are fed to chambers 19, 20 between the diaphram 16 and the member 1, 2 and any pressure difference displaces the diaphram from its normal central position to produce a difference in inductance between coils of 9, 9a.
Patent GB-1193855-A (GB)
Title: Apparatus for Flanging the Edges of Sheet Metal Blanks
IPC: B21D19/08
Filed: 1967-09-08
Abstract: 1,193,855. Angular bending. FRIED KRUPP G.m.b.H. 8 Sept., 1967 [10 Sept., 1966], No. 41132/67. Heading B3E. Apparatus for flanging the edge of a sheet metal blank, comprising a single flange forming die having a nose and an inclined surface and mechanism for moving the die in a curved path which is approximately elliptical and is part of the curve produced by a four bar linkage with an oscillating crank drive, to cause the edge of the sheet to be first bent by the nose through an angle of 90 degrees and then pressed by the inclined surface of the die to the desired flange angle. The apparatus comprises a housing 4 to which a clamping jaw 1 is fixed and a movable cover 5 on which a clamping jaw 2 is secured. Rotatably mounted in the housing are two shafts 8, 9, carrying eccentrics the centres of which are at 13 and 14 respectively. The shaft 8 is oscillated through 90 degrees by a crank-driven rack 11 which meshes with a pinion 12. Mounted on the eccen. tries is a coupling member which carries a bending tool 15, having a vertical surface 16, an overhanging nose 17 and an inclined surface 18. In the rest position, the flat upper surface 19 of the tool engages a screw fixed in the cover and lifts the cover and clamping jaw 2. A workpiece is inserted between the open jaws to an extent limited by the surface 16 and when the rack is reciprocated the tool 15 moves first downwardly and then to the left, along a curved path, Fig. 3, to bend the edge of a workpiece 3 first downwardly and then under itself, through an angle of at least 135 degrees.
Patent GB-1116769-A (GB)
Title: Process for the manufacture of shaped polyester articles
IPC: C08J11/00
Filed: 1966-09-16
Abstract: A rodenticidal composition consists essentially of a rodenticide and a bait which is kibbled corn with a preponderant screen mesh size of from 2.5 to 6 mesh (U.S. Standard Sieve).  The kibbled corn is a product obtained by (a) hydrolysing cracked yellow corn under steam pressure to form a liquified and dextronized mass of the starch, (b) extruding the liquified mass from under steam pressure to form an expanded and solidified mass and (c) finally subdividing the expanded and solidified mass to a particle size of 2.5 mesh to 6 mesh. Suitable rodenticides are N - monoaryl thioureas such as N - (1 - naphthyl) thiourea or N - (2 - naphthyl) thiourea, phosphate esters such as hexaethyl tetrapolyphosphate, arsenic trioxide, strychnine sulphate, sodium monofluoroacetate, red squill, zinc phosphide, yellow phosphorous, thallium sulphate, 4 - amino - pteroyl glutamic acid 3 - (alpha - acetonylbenzyl) - 4 - hydroxy - coumarin (or its sodium salt), coumachlor, 3 - (alpha - acetonyl - furfuryl) - 4 - hydroxy - coumarin, 2 - pivalyl - 1, 3 - indandione and 3, 3 - methylene - bis (4 - hydroxy - coumarin).  The kibbled corn may be impregnated or coated with a suspension, emulsion or solution of the rodenticide.  Alternatively, the rodenticide may be added during the manufacture of the kibbled corn.
Patent GB-1189624-A (GB)
Title: Valeric Acid Derivatives
Inventor: CHEMERDA JOHN MARTIN
IPC: C07D209/28
Filed: 1968-03-04
Abstract: 1,189,624. Valeric acid derivatives. MERCK & CO. Inc. 4 March, 1968 [8 March, 1967], No. 41542/69. Divided out of 1,189,623. Heading C2C. The invention comprises compounds of the Formula I and II wherein R is a methoxy or dimethylamine group, R<SP>1</SP> is a C 1-5  alkyl, monocyclic or (C 1-5 ) alkyl or aryl group (R<SP>1</SP> is an ethyl group in the examples). The compounds of Formula I are prepared by treating a compound of the formula with nitroethane preferably in the presence of an aqueous basic material e.g. benzyltrimethylammonium hydroxide. The compounds of Formula II are prepared by reducing a compound of the Formula III by a reducing agent which selectively reduces the Keto group e.g. NaBH 4 . The compounds of Formula III are themselves prepared by hydrolysing a compound of Formula I, preferably with a mixture of an alkali metal hydroxide and a C 1-5  alkanol.