baber/WOPTO huggingface dataset:
Patent GB-1552502-A (GB)
Title: Apparatus for measuring samples
IPC: G01B11/08
Filed: 1976-09-23
Abstract: A magnified image of the specimen is generated on a display screen. An index line (10) is arranged at the intersection point of the optical axis (9) of the image-generating system on the display screen (8). By using a device for moving the specimen and for measuring this movement (26), the specimen can be displaced between two positions in which in each case an edge point of a section of the specimen that is to be determined coincides with the display screen index. This design has no need of an expensive, distortion-free imaging system for magnifying the specimen true to scale, since it is, after all, the case that only the region of the optical axis of the image-generating system that is free from imaging errors is used to measure the specimen. This device is advantageously used to evaluate immune diffusion plates or immunophoresis plates. <IMAGE>
Patent GB-821796-A (GB)
Title: Improvements in ductile niobium and tantalum alloys
IPC: C22C27/02
Filed: 1957-12-20
Abstract: A ductile niobium and/or tantalum-base alloy to be melted and cast under an inert atmosphere and which may be subsequently hot or cold worked consists of:-Rare earth elements 2-10% by weight; Nb and/or Ta the balance.  The rare earth elements may be added as Misch metal.
Patent GB-1218400-A (GB)
Title: Anthraquinone dyes, their production and use
Inventor: BENGUEREL FRANCOIS
IPC: C09B1/28
Filed: 1968-08-21
Abstract: 1,218,400. Anthraquinone dyes. SANDOZ Ltd. 21 Aug., 1968 [7 Sept., 1967], No. 40065/68. Heading C4P. Compounds of the formula where n is 0 or 1; R is an optionally substituted aliphatic or cycloaliphatic radical, R 1  is a radical of the formula X is an optionally substituted alkylene radical; y is a direct link or an optionally substituted alkylene radical; R 2 , R 3  and R 4  are hydrogen or an optionally substituted hydrocarbon group; R 5  is an optionally substituted aryl radical and rings B and H may be substituted are prepared by reacting 1 mole of a compound of the formula where V and W are substituents exchangeable for amino groups, or 1 mole of the leuco form thereof, or 1 mole of a mixture of a compound of Formula IV and its leuco form with one mole of a compound of the formula and one mole of a compound of the formula H 2 N-R 1  with oxidation of the product if the leuco form of starting material is used, followed by sulphation and if necessary sulphonation. The compound may also be prepared from compounds of the formula where U is a substituent exchangeable for an amino group and Z 1  is an acyl radical by reaction with the appropriate amine followed in any order by sulphation, sulphonation if desired, and the cleavage of the acyl group. The invention further comprises compounds of Formula I with the proviso that when R 1  is a radical of Formula II, R contains at least two carbon atoms.
Patent GB-1253437-A (GB)
Title: Separable fastener and method of making same
IPC: A44B18/00
Filed: 1969-08-11
Abstract: 1,253,437. Separable fastener. AMERICAN VELCRO Inc. 11 Aug., 1969 [12 Aug., 1968], No. 40081/69. Heading E2S. A hook member for a separable fastener of the type in which two complementary surfaces have hook and loop engaging elements, is made from non-woven material. The material consist of either a bilaminate or uniaxial or biaxial material e.g. polyethylene terephthalate. The material is characterised in that it shrinks when treated in some way e.g. by heat. If the surface only is treated the material distorts. Triangular cuts 16 (or rectangular), are stamped in the sheet 11. These are bent out of the plane of the sheet, as at 22A, subsequent heat treatment forms them into hooks 12. The hooks are formed in rows with adjacent rows of hooks pointed towards each other. The hooks are aligned parallel to an axis of assymetry 20. A backing sheet 13 may be applied by adhesive 14 to the hook sheet 11. The hooks are made by first stamping the triangular cuts in the sheet as at 22 in Fig. 5. The triangular members are forced out of the plane of the sheet by spiked wheel 23. A heating mask sheet 25 passes over the hook strip so that only the hooks are exposed to subsequent heat treatment. The hooks are heated by an infra red lamp 31 and shutter system 37, 39 which forms two heat beams 34 and 35. These beams are scanned over the hooks from the tips to the roots. The wheel 23 advances the strip intermittently and pairs of rows of hooks are heat treated together.
Patent GB-1318297-A (GB)
Title: Blackening compositions for ferous articles
IPC: C23C22/62
Filed: 1970-08-21
Abstract: 1318297 Blackening composition OXFORD CHEMICAL CORP 21 Aug 1970 [9 Sept 1969] 40324/70 Heading C7U A blackening composition for ferrous articles consists of (i) an alkali metal hydroxide, 32-55 weight per cent (2) an alkali metal nitrite, 1-8%, (3) an alkali metal nitrate, 0À5-6%, (4) iron sequestrant, 0À05-10% and water, balance to make 100%. The sequestrant may be mono-, di-or triethanolamine, sodium gluconate or heptagluconate, sodium nitriloacetate or sorbitol. A solid composition dilutable in water to give the above bath contains ingredients (1) to (4) in the relative proportions specified, and a spent blackening bath which contained 32-55% NaOH, 1-8% NaNO 2  and 0À5-6% Na NO 3  in water may be regenerated by adding 0À05 to 10% of one or more of the above sequestrants.
Patent GB-1217409-A (GB)
Title: Improvements in or relating to lawns, greens or playing fields and to a method of forming same
Inventor: PRUNTY JOSEPH PATRICK
IPC: E01C13/08
Filed: 1968-08-24
Abstract: 1,217,409. Drainage. J. P. PRUNTY. 24 Aug., 1968, No. 40592/68. Heading A1B. A method of producing turf comprises providing drainage channels 14 above conventional "herring bone" subterranean channels 11, filling said drainage channels with stone particles and providing a covering layer of a mixture of sand and grass seed. Stone particles may also be incorporated into the mixture. Reference has been directed by the Comptroller to Specification 1,084,533.
Patent GB-942383-A (GB)
Title: Electron-beam tubes
Inventor: EDWARDS GEOFFREY PHILIP
IPC: H01J23/02
Filed: 1959-11-30
Abstract: 942,383. Velocity-modulated tubes. MULLARD Ltd. Nov. 30, 1959, No. 40598/59. Heading H1D. A tube has a wave-propagating arrangement including a slow-wave structure L, Figs. 1, 2, with at least one flat surface unenclosed by other parts of the arrangement, the electron beam D travelling along said unenclosed surface, and an ion-permeable conductive element G disposed adjacent the unenclosed surface but on the opposite side of the beam and insulated from the slow-wave structure so that it can be given a potential (say 50 volts negative to the structure) which enables it to act as an ion drain removing positive ions from the vicinity of the beam. A substantial reduction in noise is said to be achieved, the ions being either collected by the element or by the envelope wall beyond the element. The element G may be a grid wound on rods R, Fig. 1, or a foraminated sheet or mesh. The arrangement may be symmetrical with beams and elements on both sides of the slow-wave structure, which may be an interdigitated line. In another form the slow-wave structure may be a ladder line L in one face of a circular, rectangular or ridged waveguide W, Fig. 4. Backward wave operation may be employed.
Patent GB-1314126-A (GB)
Title: Process for preparing tetramethylene glycol
IPC: B01J37/02
Filed: 1971-09-02
Abstract: 1314126 Hydrogenation catalysts IMPERIAL CHEMICAL INDUSTRIES Ltd 2 Sept 1971 [4 Sept 1970] 41022/71 Heading B1E [Also in Division C2] Catalyst for use in the preparation of tetramethylene glycol by selective hydrogenation of gamma-butyrolactone comprises (a) metallic nickel, (b) metallic cobalt, (c) an oxide of thorium and, optionally, (d) support material, for example selected from silica, silica-alumina, kieselguhr and pumice. The catalyst may contain, per part by weight of nickel, from 0.02 to 10 parts by weight of cobalt, from 0.04 to 10 parts by weight of thorium dioxide and, if present, from 0.1 to 50 parts by weight of support material which preferably has a silica content greater than 80 weight per cent. The catalyst may be prepared from compounds of nickel, cobalt and thorium selected from hydroxides, nitrates, chlorides, formates and acetates by generally conventional methods involving, for example, impregnation, atomization, precipitation or co-precipitation. Examples relate to catalysts which comprise nickel, cobalt and thorium dioxide supported on kieselguhr (Examples 1, 2, 4, 6 and 7) or silica (Examples 3) or 85-15 silica-alumina (Example 5), the catalyst of Example 1 being prepared by immersing kieselguhr in an aqueous solution containing nitrates of nickel, cobalt and thorium, drying the resulting product, calcining the dried product in air at 350‹C and reducing the calcined product with hydrogen at 400‹C. A comparative example relates to catalyst which comprises nickel, cobalt and titanium dioxide supported on kieselguhr.
Patent GB-859373-A (GB)
Title: Process for the preparation of organophosphines
IPC: C07F9/50
Filed: 1958-12-19
Abstract: A dialkylphosphine metal compound is obtained by contacting at an elevated temperature, e.g. between 60 DEG  and 210 DEG  C. and preferably between 100 DEG  C. and 140 DEG  C., a dialkyl halophosphine or a tetralkyldiphosphine with an alkali metal in an aromatic hydrocarbon solvent, preferably under an inert atmosphere, to form a dialkylphosphine metal compound, at least two gram atoms of alkali metal being present for each mole of dialkylhalophosphine or tetraalkyldiphosphine.  (The term "alkyl" is defined as including "cycloalkyl").  The dialkyl metal compound may be contacted with an aliphatic alcohol, e.g. methanol, or with an organic carboxylic acid or water to form a dialkylphosphine. Also, in a modification of the process a tetralkyl diphosphine is obtained by contacting at an elevated temperature a dialkylhalophosphine with a reactive metal in an aromatic hydrocarbon solvent or in an oxygenated organic solvent only one equivalent of reactive metal being present for each mole of dialkylhalophosphine.  The preferred alkali metal is potassium but sodium, lithium or other alkali metal may be used.  The reactive metal used in the modification referred to may be an alkali metal or a less reactive metal such as calcium, magnesium, zinc, aluminium, iron, copper or lead.  Specified aromatic hydrocarbon solvents are tetrahydronaphthalene, benzene, toluene, xylene, decahydronaphthalene, cumene, cymene, durene, alkyl naphthalenes and alkyl biphenyls and suitable oxygenated solvents include diethyl-, diisopropyl-, dibutyl- and diamylesters, dioxane, tetrahydrofuran and diethylene glycol dimethyl ether. Examples are given for the production of (1) diethylphosphine from diethylmonochlorophosphine, followed by treatment with methanol, (2) tetraethyldiphosphine from diethylmonochlorophosphine containing a small amount of ethyl dichlorophosphine, (3) and (5) diethylphosphine from tetraethyldiphosphine followed by treatment with methanol, (4) potassium diethylphosphine by reacting tetraethyldiphosphine with potassium in decahydronaphthalene in an atmosphere of nitrogen at 150 DEG C., and (6) dimethylphosphine from tetramethyldiphosphine followed by treatment with methanol. Comparative examples are given to show that when diethylmonochlorophosphine and tetramethyldiphosphine respectively are reacted with potassium in dibutyl ether followed by treatment with methanol diethyl phosphine is obtained in low yield but cannot suitably be isolated from the reaction mixture.
Patent GB-1097517-A (GB)
Title: Resonant sensing device for measuring a surface property of a test piece
IPC: G01M7/02
Filed: 1965-09-28
Abstract: 1,097,517. Acoustic inspection devices. BRANSON INSTRUMENTS Inc. Sept. 28, 1965 [Jan. 4, 1965], No. 41143/65. Heading H4D. [Also in Division G1] Apparatus for measuring the surface hardness of a test piece comprises a rod whose natural frequency of vibration is dependent upon the depth of penetration of the surface by one end of the rod under a standardized applied force. A diamond-tipped rod 12 of magnetostrictive material, a driving coil 14, a piezo-electric pickup 16 and an amplifier 20 form a closed-loop positive-feedback system for maintaining vibrations of rod 12 at its resonant frequency. A signal from a pre-amplifier stage of amplifier 20 is shaped in a circuit 22 and triggers a bi-stable circuit 24, an output of which is applied through a limiter 26 to a calibrated bridge circuit 30 in which a conventional microammeter, a digital meter or a printer indicates deviations of the resonant frequency from the unloaded natural resonant frequency of rod 12. The read-out may be directly in units of hardness. Transistor circuits for stages 20 to 30 are given (Fig. 2, not shown).
Patent GB-1456632-A (GB)
Title: Gas torch for soldering
IPC: F23D14/38
Filed: 1972-09-08
Abstract: 1456632 Gas burners CHRYSLER UNITED KINGDOM Ltd 7 Dec 1973 [8 Sept 1972] 41834/72 Heading F4T In a soldering torch receiving natural gas via annular recess 15, Fig. 1, and radial bores 16 and compressed air via passage 10a, the mixing chamber for the gas and air is defined in a tube 11 by an enlarged portion of the axial bore therethrough. The tube is attached to a nozzle member 14 having a stepped axial bore and radial bores 21, 21a through which the mixture is discharged into a spreader chamber 22. An annular plate 23 has an axially-projecting annular ridge 24 and annular series of axial holes (25, 26), Fig. 2 (not shown), radially outwardly and inwardly of the ridge. Figs. 3 and 4 (not shown), illustrate torches each having a tube 11 attached to a standard nozzle.
Patent GB-1527277-A (GB)
Title: Electric power converting apparatus for use in battery cars
IPC: B60L11/18
Filed: 1976-10-12
Abstract: 1527277 Converters; charging batteries; control of D.C. motors; control of A.C. motors TOKYO SHIBAURA DENKI KK 12 Oct 1976 [13 Oct 1975 (2) 23 Oct 1975] 42345/76 Headings H2F H2H and H2J A circuit for driving an electric car motor 34 from a car battery 1 and for charging the car battery from a mains supply comprises an inverter 2 converting the direct voltage of the battery to alternating voltage, a transformer 20 which steps up this alternating voltage, rectifiers 21, 22 which convert the stepped up voltage to direct voltage, and a second inverter 33 which converts the direct voltage to a variable frequency alternating voltage for driving the motor 34 at a variable speed, the circuit further comprising a rectifier 26 for rectifying the mains supply followed by transistors 23, 24 forming an inverter which converts the direct current from a rectifier 26 to a high frequency alternating current which is fed to the secondary of transformer 20 to be stepped down and fed through rectifier diodes 17, 18 connected in parallel opposition with the switching elements 17 and 18 to charge the battery 1. Switches 27, 28, 29 determine whether the battery is driving the motor or being charged. Control of the battery charging rate is by a control device 13 fed by current transformers 19 and charging current setting device 10, control being by pulse width control to the inverter transistors 23, 24. A tertiary winding followed by a rectifier may be provided on the transformer 20 to provide an auxiliary D.C. supply, Fig. 2, not shown. An additional control circuit may be provided which varies the voltage provided by the first inverter 2 as desired, Fig. 3, not shown. For driving a D.C. motor, the second inverter 33 may be omitted. The control of the inverter 33 is such that the motor 34 produces a torque proportional to the position of a torque setting resistor 9 operated by an acceleration pedal 8.
Patent GB-1472698-A (GB)
Title: Conveyor devices
IPC: B65G19/02
Filed: 1975-10-15
Abstract: 1472698 Endless conveyers object spacing SAPAL SOC ANON DES PLIEUSES AUTOMATIQUES 15 Oct 1975 [19 Dec 1974] 42352/75 Heading B8A A device for spacing objects A intermittently delivered to a chain conveyer and delivering them at a constant speed comprises a chain 1 driven at a constant speed by a wheel 2 and kept in constant tension by a driven wheel 3. The working run passes over a fined ramp 21 and a mobile ramp 25. The chain has equally spaced alternately positioned upper and lower rollers 11, 17 and drive fingers 20. As the rollers 11, 17 pass along rolling tracks 22, 23 respectively of the ramp 21 the chain is folded in the manner of an accordion as shown reducing the spacing a between the fingers 20 over the receiving zone Z. The mobile ramp 25 is vertically reciprocated by cams 26 synchronously driven by chains from the main drive shaft so that as it is lowered the spacing of the fingers 20 is increased to b corresponding to that of the chain at normal speed while the fingers 20 slow or stop over the zone Z, allowing the introduction of objects A. The ramp 25 may be reciprocated under the control of the device feeding objects to the zone Z.
Patent GB-1439668-A (GB)
Title: Antibiotic bm123 and production thereof
IPC: C12R1/365
Filed: 1973-09-10
Abstract: 1439668 Antibiotic BM123 AMERICAN CYANAMID CO 10 Sept 1973 [12 Oct 1972] 42535/73 Heading C2A Antibiotic BM123 is prepared by cultivating a microorganism having the characteristics of Nocardia sp. NRRL 5646 or mutants thereof in an aqueous nutrient medium containing assimilable sources of carbon, nitrogen and inorganic salts under submerged aerobic conditions until substantial antibacterial activity is imparted to the medium, and then recovering BM123 therefrom. The antibiotic exists in three forms, designated BM123α, BM123# and BM123#. Antibiotic BM123α is characterized by (a) having an optical rotation (C= 1.00 in water); (b) having the following elemental analysis (per cent); C, 33.89; H, 5.71; N, 11.88; O, 35.40; and (c) the infra-red absorption spectrum indicated in Fig. 1 (not shown). Antibiotic BM123# is characterized by (a) having an optical rotation (C=1.25 in water); (b) having the following elemental analysis: C, 47.53; H, 7.39; N, 16.54; ash, 1.04; and (c) the infra-red absorption spectrum indicated in Fig. 2 (not shown). Antibiotic BM123 #  is characterized by (a) having an optical rotation (C= 1.004 in water); (b) having the following elemental analysis: C, 46.13; H, 6.65; N, 17.00; O, 24.96; ash, 0.90; and (c) the infra-red absorption spectrum indicated in Fig. 3 (not shown). These antibiotics may be incorporated with suitable carriers into various pharmaceutical forms.
Patent GB-1521758-A (GB)
Title: Apparatus for fuel-air mixture
IPC: F02M29/04
Filed: 1975-10-17
Abstract: 1521758 Mixing devices R A HANFF 17 Oct 1975 [18 Nov 1974] 42768/75 Heading F1B In order to improve entrainment of fuel in an air-stream an apertured plate 11 inserted into the fuel/air-flow path of an induction system between the carburetter and the intake manifold comprise radially equiangularly spaced fixed spokes 25 whose cross-section is as shown in Fig. 2 where line 37 correspond to the direction of mixture flow. The angle between surface 31 and line 37 is in the range 95 degrees to 135 degrees and preferably 113 degrees. Each surface 31 of each spoke is inclined in the same sense for each apperture. Apertures arranged in pairs have opposite senses. The free cross-sectional area for each aperture is arranged to be that of the area of the associated carburetter barrel and spacer plates 17 and 15 having chamferred sections 19, 43 may be used to provide a smooth transition between diameters. The hub may be formed with a through hole 45 which tapers in the upstream direction. The plate 15 may be the carburetter heat spacer plate. There is a respective aperture for each barrel.
Patent GB-1147975-A (GB)
Title: Electrical connectors
Inventor: LUND ALFRED ERNEST
IPC: H01R9/24
Filed: 1965-10-08
Abstract: 1,147,975. Electrical connectors. POSTMASTER GENERAL. 7 Oct., 1966 [8 Oct., 1965; 2 Dec., 1965], Nos. 42781/65 and 51213/65. Heading H2E. An electrical connector comprises an elongate base 1 having walls 2 between which are located bushes 11 retained by a locking member 6 which interlocks with at least some of the walls and which has apertures 10 affording access to screws &c. in the bushes. As shown, a thermoplastics locking member 6 has ribs 8 to resiliently engage slots 5 in the walls 2 and has transverse projections 9 to engage the tops of the bushes. Alternatively (Fig. 2, not shown), the locking member has a longitudinal rib (28) projecting inwardly from opposite side walls 1 to engage notches (25) in the outer edges of the walls 2 and a dependent central rib (29) to engage the bushes. The apertures in the locking member are preferably smaller than the screw-heads so as to hold the screws captive.
Patent GB-1121487-A (GB)
Title: Blow molding machine with continuously rotating reciprocating extruder screw
IPC: B29C48/09
Filed: 1965-10-08
Abstract: 1,121,487. Blow-moulding; reciprocating extruder screw. HOOVER BALL & BEARING CO. 8 Oct., 1965 [19 Oct., 1964], No. 42847/65. Heading B5A. An extrusion-blow moulding machine comprises a barrel, a die head connected thereto, a separable blow-mould therebelow, the barrel having a continuously rotating and reciprocable screw and means to apply a longitudinal force thereto, the force being directed towards the extrusion orifice, operative on mould opening and being interrupted at one point so that the screw moves away from the orifice due to accumulation of material. The extrusion is therefore intermittent. The force may be applied to screw (22, Fig. 1) by hydraulic cylinder (102) which is shut off by a switch (LS1 Fig. 8, not shown) when the screw is forward. The screw is forced back against the hydraulic back pressure and is supported by a ball spline assembly (Figs. 4, 5, 7 not shown) which transmits rotation thereto and enables low friction reciprocation thereof. The hydraulic assembly includes a piston rod (116, Figs. 4, 5, not shown) and a thrust bearing (124) rotating with the screw, but transmits the hydraulic thrust thereto. The orifice may be annular and the thrust may be varied by cam (282, Fig. 8, not shown) to vary the parison thickness. Switch (LS5) is actuated to restart forward movement of the screw just before mould-halves (140) have fully opened.
Patent GB-1400332-A (GB)
Title: Contraceptive sheath
IPC: A61F6/04
Filed: 1973-09-12
Abstract: 1400332 Condom AKWELL INDUSTRIES INC 12 Sept 1973 [21 Sept 1972] 42882/73 Heading A5R A condom comprises a thin-walled rubber or latex cylinder closed at one end and having on its outer peripheral surface projections 18a, 18b arranged to form interrupted ridges extending in planes at right angles to the cylinder axis, at an angle to this axis, Fig 2 (not shown) or in a helix, the thickness of the cylinder at the projection being at least twice that over the remainder of the cylinder. The projections may be of two different lengths and have a semi-circular cross-section with their surfaces of a grainy texture compared to the remainder of the cylinder. The condom is made by dipping a glass mandrel repeatedly into a rubber or latex solution, recesses cut by sand blasting in the surface of the mandrel providing the projections when the condom is turned inside out.
Patent GB-1079917-A (GB)
Title: Transistor amplifier
IPC: H03F3/26
Filed: 1964-10-22
Abstract: 1,079,917. Transistor amplifier circuits. BILLMAN REGULATOR A.B. Oct. 22, 1964 [Oct. 28, 1963], No. 43083/64. Heading H3T. [Also in Division G1] An A.C.-energized resistance bridge for measuring temperature utilizes a thermistor Th in one arm of the bridge, and the unbalance diagonal is connected to the emitters of two complementary transistors T1, T2 having opposed windings N1, N2 of a transformer TR in the collector circuits. When the bridge is balanced, the collector currents are equal and opposite and there is no signal from output winding N3. When the bridge is unbalanced, each transistor is blocked in alternate halfcycles to give an output signal indicative of the temperature.