baber/WOPTO huggingface dataset:
Patent GB-1372503-A (GB)
Title: Flow cell for spectroscopic analysis of density gradients
IPC: G01N21/05
Filed: 1972-10-12
Abstract: 1372503 Spectroscope sample cell G D SEARLE & CO 12 Oct 1972 [13 Oct 1971] 47020/72 Heading G2J Two mirror image plastics blocks 12, 12 co-operate to provide a smoothly dilating conduit 35 with light windows 50, 50. The inlet and outlet pipes have internal diameters identical with those of the extremities of the conduit. and the lack of turbulence allows greater resolution in bioassays using graduated density ultra-centrifugal techniques.
Patent GB-1447810-A (GB)
Title: Powder mixture for use in the production of lead storage battery electrodes
IPC: H01M4/57
Filed: 1974-10-31
Abstract: 1447810 Lead-acid batteries TUDOR AB 31 Oct 1974 [1 Nov 1973] 47209/74 Heading H1B A powder mixture for the active material of a lead-acid battery comprises lead and lead oxide and a compound which is an oxide or a salt of a metal, the compound being weakly soluble in alkaline solution and being readily soluble in sulphuric acid. During the electrode forming stage the metallic compound should be insoluble in the alkaline medium formed in the electrode but, thereafter, in order to achieve the desired porosity the compound must be dissolved in the sulphuric acid electrolyte. MgO is the preferred compound but MgCO 3 , Mg 3 (PO 4 ) 2  or MgHPO 4  may be used to provide the desired porosity. To prevent volume changes during the forming process, the powder mixture may include both magnesium oxide and magnesium sulphate.
Patent GB-1427372-A (GB)
Title: Induction heating coils
IPC: H05B6/32
Filed: 1973-10-11
Abstract: 1427372 Induction heating coil SIEMENS AG 11 Oct 1973 [1 Feb 1973] 47430/73 Addition to 1406079 Heading H5H A pancake induction heating coil for crucible free zone melting comprises a wound section, e.g. turns 4, 5 and an annular internal insert extending towards the centre of the coil, the insert being in two separable halves 3, 7, the half 3 being permanently connected to one end of the innermost turn of the wound section, and the abutting faces of the two halves of the insert being at right angles to the plane of the coil. The coil is made of copper and/or silver, and the two halves of the insert have flanges 11, 12 of silver plated brass hard soldered thereto by means of which they are secured together by nuts and bolts 17. Cooling passages (not shown) through the insert halves have rubber seals at their facing ends to prevent leakage of coolant when the halves are united. The separable construction of the coil enables it to be readily placed about silicon rods for the production of silicon monocrystals.
Patent GB-1414651-A (GB)
Title: Acrylonitrile polymer compositions
IPC: B29C48/05
Filed: 1972-10-16
Abstract: 1414651 Acrylonitrile fibres and films E I DU PONT DE NEMOURS & CO 16 Oct 1972 [14 Oct 1971] 47646/72 Heading B6B [Also in Division C3] An extrudable substantially single-phase polymer composition particularly useful for forming filaments and films comprises an acrylonitrile polymer containing at least 40% by weight acrylonitrile units and water, the water present being completely or partially in the form of a hydrate with the nitrile groups of the polymer. The composition is prepared by heating the polymer under at least autogenous pressure with sufficient water to hydrate at least 45% of all the nitrile groups or at least 80% of the coupled nitrile groups to a temperature at which hydration takes place. In examples polyacrylonitrile and copolymers of acrylonitrile with one or more of methylacrylate, sodium styrene sulphonate, styrene, ethylene, 2-methyl-5-vinyl pyridine and vinyl acetate are heated to temperatures from 140-205 C. and the compositions are extruded to form filaments and films. Films may be stretched by inflation using steam to produce the internal pressure, and the product has a layered structure in which an inner core of material containing voids is interposed between layers having no voids and the density which is higher than that of the core. Those filaments wherein the acrylonitrile polymer contains at least 80% by weight of acrylonitrile units form the subject of divisional Specification 1,414,652.
Patent GB-1323325-A (GB)
Title: Indolo 1,2-d 1,4 benzodiazepin-6-ones
IPC: C07D209/14
Filed: 1970-10-08
Abstract: 1323325 Indolo[1,2-d][1,4]benzodiazepin-6- ones A H ROBINS CO Inc 8 Oct 1970 [22 Oct 1969] 47911/70 Heading C2C Novel indolo[1,2-d][1,4]benzodiazepin-6-ones of the general formula wherein R is a hydrogen atom or a 1,2-dihydroxyethyl, hydroxy, C 1-8  alkylamino, di-C 1-8 -alkylamino, N-phenylcarbamoyloxy or N,N-diphenylcarbamoyloxy group ("phenyl" meaning an optionally monosubstituted phenyl group, the substituent being a C 1-8  alkyl, C 1-8  alkoxy or trifluoromethyl group or a fluorine, chlorine or bromine atom); R<SP>1</SP> is a hydrogen, chlorine or bromine atom or a C 1-8  alkyl, C 1-8  alkoxy or trifluoromethyl group; and n is 0, 1, 2, 3 or 4; and acid addition salts of those compounds which are basic are prepared (a) when n is 0 and R is a hydrogen atom, by reaction of a 2-(2- haloacetamidophenyl)-indole wherein X is a halogen atom, with an alkali metal hydride; (b) when R is other than a hydrogen atom, by reaction of the product of (a) with an alkali metal hydride followed by a halide of the general formula R(CH 2 ) n X; and (c) when R is an N-phenylcarbamoyloxy or N,N-diphenylcarbamoyloxy group, by reaction of the corresponding compound wherein R is a hydroxy group with a suitable phenyl isocyanate or carbamoyl chloride; followed optionally, where appropriate, by salification of the product. 2-(2-Haloacetamidophenyl)-indoles of the second general formula above are prepared by reaction of the phenylhydrazone of a 2-aminoacetophenone and polyphosphoric acid and reaction of the resulting 2-(2-aminophenyl)- indole with a haloacetyl halide. Pharmaceutical compositions having antidepressant and anticonvulsant activity comprise as active ingredient, an indolo[1,2-d][1,4] benzodiazepin-6-one of the first general formula above or a pharmaceutically acceptable acid addition salt of such a compound which is basic, together with a pharmaceutically acceptable carrier, and may be administered orally or parenterally.
Patent GB-1486235-A (GB)
Title: Binary data transmission
IPC: H04L27/12
Filed: 1974-11-06
Abstract: 1486235 Diversity transmission of binary data PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 6 Nov 1974 [9 Nov 1973] 47983/74 Heading H4L  In a FSK radio transmission system for transmitting binary data (each bit of which occurs during a predetermined time interval) so as to reduce the interference effects of multi path propagation and frequency selective fading, at least two FSK systems are used, and to transmit say the "1" bits, the two frequencies (from the two systems) representing the bit are transmitted consecutively in separate predetermined parts of the bit interval. The "0" bits are transmitted similarly. Each frequency is received and detected time selectively at the receiver within a time slot occupying a part of the bit interval equivalent to the predetermined part. The signal received at the diversity receiver is passed via appropriate band pass filters 3, 4 to separate demodulators 1, 2, one for each FSK system. In 1, say, the received signal is limited at 9 and passed to circuits 11, 12, tuned to the "1" and "0" frequencies respectively. After rectification at 15, 16 the signals pass to a switch 24 controlled by a bit synchronizing circuit 28 responding to synchronizing information transmitted concurrently with the data to open during the proper part of the bit interval. The outputs from the two FSK systems are combined in a decision circuit 23 which provides an output at 33 indicating for each bit interval whether the transmitted bit is a 1 or 0. The frequency separation for the two FSK systems is the inverse of half the bit interval.
Patent GB-1086386-A (GB)
Title: Hydraulic pump control systems
Inventor: WARNE EUGENE HAROLD
IPC: F16H61/46
Filed: 1963-12-05
Abstract: 1,086,386. Fluid-pressure servomotor systems. JOSEPH LUCAS (INDUSTRIES) Ltd. Dec.17, 1964 [Dec. 5, 1963], No.48048/63. Heading G3P. A hydraulic system comprises a swash plate pump 11 having an outlet 16 which leads to one or more machines 10, the output of the pump being controlled by a servo mechanism 12. A pressure responsive valve 20 is located in the outlet 16 and a first pipe 13 leads from the mechanism 12 to the outlet between the pump and valve 20 while a second pipe 14 leads from the mechanism 12 to the outlet between the pump and valve 20 and contains a bleed valve 15 which controls flow from the pipe 14 to the pump inlet 17. The bleed valve is loaded to close the bleed and is subjected to the pressure in the outlet 16 between the valve 20 and the machine 10. If the machine demand is above the pump supply, the outlet pressure drops and the valve 20 closes. The subsequent fall in pressure between this valve and the machine causes the bleed valve 15 to close the bleed and the pump delivery then passes through pipe 14 to the mechanism to increase the pump output and thereby re-open valve 20. If the demand falls, the increased output pressure moves valve 15 to increase the bleed and thus reduce the output of the pump.
Patent GB-1279395-A (GB)
Title: Improvements relating to field effect transistors
Inventor: TOWNSEND WILLIAM GODFREY
IPC: H01L23/482
Filed: 1968-10-11
Abstract: 1279395 Semi-conductor devices NATIONAL RESEARCH DEVELOPMENT CORP 9 Oct 1969 [11 Oct 1968] 48211/68 Heading H1K A J.U.G.F.E.T. includes a channel C bounded by gate regions, of the opposite conductivity type, controlled by gate electrodes G which are substantially in the plane of the source electrode, a transverse cross-section of the channel near the source being elongated, and varying in width along its longer sides. The channel may comprise a plurality of linked dissimilarly shaped regions resulting in desired characteristics being achieved. In one embodiment the drain may be below the source (as shown), in another embodiment the source and drain may be in the same plane, and a heavily doped region may be present at the bight of the curved channel where it passes beneath the gate regions to reduce undesired resistance in the channel. The device may be of silicon.
Patent GB-1277209-A (GB)
Title: Improvements in agglomerating nuclear fuel particles
Inventor: HORSLEY GEOFFREY WINTON
IPC: G21C3/62
Filed: 1968-10-14
Abstract: 1277209 Nuclear fuel UNITED KINGDOM ATOMIC ENERGY AUTHORITY 3 Oct 1969 [14 Oct 1968] 48690/68 Heading G6C Nuclear fuel particles are bonded together into an agglomerate by means of fused silica; the agglomerate is porous and may be cooled by the passage of coolant through the pores. Uranium dioxide particles may be coated with a multilayer fission product-retaining coating of which the outer layer is silicon carbide, a layer of amorphous silica applied, and the particles heated in a mould to 1500-1600 C. so that the silica becomes viscous to join the particles together and form a coherent silica coating. Other bonding materials referred to are SiO 2 - Al 2 O 3 , SiO 2 -CaO, SiO 2 -MgO, and SiO 2 -TiO 2 . Reference has been directed by the Comptroller to Specification 998,387.
Patent GB-1192251-A (GB)
Title: Fruit Juicer.
Inventor: BRASKAMP WILLEM HENDRIK
IPC: A47J19/02
Filed: 1967-10-27
Abstract: 1,192,251. Fruit juicer. INDOHEEM N.V. 27 Oct., 1967 [2 Nov., 1966], No. 48926/67. Heading A4C. In a citrus fruit juicer comprising a pressing cone 3, Fig. 1, within a perforated dish 4 over a juice-collecting container 1, rotation of the pressing cone in a direction contrary to the operational direction of rotation is arranged to switch on the drive motor 2. To this end, motor shaft 11 carries a pinion (24) meshing with pinions 22, Fig. 2, freely rotating on bosses 21 formed on a strip 12 which is free to rotate about a sleeve 20 fitted on a fixed mounting plate 13. Pinions 22 also mesh with an internally toothed crown wheel 8, the spindle 9 of which engages with the pressing cone 3. Contrary rotation of pressing cone 20 causes member 12 to rotate in a direction such that a projection 15 thereon operates the activating member of switch 17. it is necessary to maintain a pressure in the opposite direction to the rotation during the juicing process. Release of this pressure allows spring 25 to return strip 12 and thus release the switch.
Patent GB-492341-A (GB)
IPC: A61B5/05
Abstract: 492,341. Determining physical qualities by electric tests. PARSONS, H. F. March 16, 1937, No. 7752. [Class 37] [Also in Group VI] Apparatus for use in the diagnosis and treatment of disease comprises a condenser C, between the plates of which the body to be tested is placed, connected in series with a variable resistance I<1> and the primary winding of a transformer T. The secondary 'of this transformer is connected at one end to a conductive platform E and at the other end through a variable resistance I<2> to an electrode A which is placed against the forehead of a person standing on the platform. The adjustments of the variable resistances may be indicated by means of calibrated dials. The transformer windings are preferably shielded from the remainder of the apparatus, and the whole of the coupling circuit may be shielded. The plates of the condenser C may form the sides of a slot formed in the top of a casing, a bottom strip of di-electric material supporting the substance to be tested.
Patent GB-1075226-A (GB)
Title: Resin carbonisation
Inventor: HUTCHINGS IAN STANLEY
IPC: C04B35/83
Filed: 1964-12-03
Abstract: Carbonaceous bodies are made by impregnating cellulose fibres with a thermosetting resin and (a) initiating cure of the resin by maintaining the temperature of the impregnated fibres at up to 150 DEG  C. for at least 20 hours, (b) slowly raising the temperature of the impregnated fibres at a rate not exceeding 20 DEG  C. per hour up to 250 DEG  C., (c) raising the temperature at a rate not exceeding 50 DEG  C. per hour up to at least 720 DEG  C., (d) subsequently raising the temperature by not more than 100 DEG  C. per hour up to at least 900 DEG  C., the heat treatment of the resin taking place in an inert atmosphere.  A furan resin, e.g. a furfuraldehyde/furfuryl alcohol condensation product, phenol formaldehyde or rescorcinol formaldehyde resin may be used.  An acid catalyst may be used to initiate cure, e.g. H3PO4 or an easily saponifiable ester such as methyl p-toluene sulphonate.  The fibres may be of regenerated cellulose or rayon which has not been produced by the acetate or nitrate processes.  The impregnation may be assisted by applying air pressure with or without degassing of the fibres before adding the resin. The impregnated fibres may be shaped and/or moulded before carbonization.
Patent GB-1403446-A (GB)
Title: Magnetic work holder
IPC: B24B41/06
Filed: 1972-10-27
Abstract: 1403446 Magnetic workholder CINCINNATI MILACRON-HEALD CORP 27 Oct 1972 [8 Nov 1971] 49747/72 Heading H1P A magnetic workholder 10 for use with a grinding machine generating a surface of revolution of a workpiece 11, e.g. the inner race of an anti-friction heating has a rotatable spindle 14 at one end of which is mounted a non-rotating surrounding annular coil 13. A first ring 14 on the spindle receives a n electromagnetic field of one polarity, e.g. N and second ring 15 concentric with the first receives a field of opposed polarity, e.g. S. An axial lip 16 extends in a plane axially spaced from that of the rings 14, 15 and is split into 4 parts 17, 18, 19, 21 each subtending 90 degrees with connectors 22, 23 joining ring 14 to diametrically opposed parts 18, 21 and connectors 24, 25 joining ring 15 to the remaining parts 17, 19. Wear resisting inserts 26, 27, 28, 29 are provided flush with the radial surfaces of the lip to engage the end surface of workpiece 11 and are gapped from the next adjacent part of the lip by slots. Rings 14, 15; the lip segments 17, 18, 19, 21 and connectors 22, 23, 24, 25 are of magnetic material and the spaces between the connectors and the rings are filled with non-magnetic epoxy resin A. The connectors are bounded by axial planes at 90 degrees extending radially from the ring and lip axis and coned surfaces about an axial vertex and connectors 22, 23 and parts 18, 21 are magnetically insulated from connectors 24, 25 and parts 17, 19. The coil is energized and magnetic flux passes into, circumferentially around, and out of the workpiece through parts 21, 18 and 17, 19 and the associated connectors to retain the workpiece without slipping.
Patent GB-1253973-A (GB)
Title: Liquid moving systems
Inventor: EVANS ARTHUR JAMES
IPC: B67D1/12
Filed: 1968-10-22
Abstract: 1,253,973. Liquid level control. DISTILLERS CO. (CARBON DIOXIDE) Ltd. Jan. 13, 1970 [Oct.22, 1968], No. 50060/68. Heading G1H. In equipment in which beer is drawn by a pump from a bulk container through a pipe 1 into a glass cylinder 3 and leaves through a pipe 2, a reed switch 4 is arranged adjacent or above the pipe 1 and a float containing a magnet 9, floats on the beer, the arrangement is such that as carbon dioxide gas collects in the cylinder 3 the beer level 18 and hence the float 5 drops until the magnet 9 actuates switch 4 to close a contact in a switch 10 to isolate a circuit 11, controlling the pump, and complete a circuit to a warning lamp. A valve 7 is manually operated to allow all the gas to escape through a pipe 6 and then closed and a push button operated to resume normal operation. In a modification, Fig. 2 (not shown) the float is provided with two magnets and two reed switches one of which is in circuit with the valve 6.
Patent GB-1200939-A (GB)
Title: Fast recovery high-mean-power pre-tr switch
IPC: G01S7/03
Filed: 1967-11-03
Abstract: 1,200,939. T.-R. switches. WESTING- HOUSE ELECTRIC CORP. 3 Nov., 1967 [23 Nov., 1966], No. 50098/67. Heading H1D. A capsule 26 containing an ionizable gas is disposed adjacent an iris 22 formed between tapering parts 24 of a heat conducting partition 23 separating a waveguide portion 16 of a microwave switching device from a further waveguide portion 19 leading to a receiver. The ionizable gas may be a halogen, and the capsule 26 also contains cobalt 60. Waveguide portion 16 contains nitrogen to suppress arcing across the iris 22. The capsule 26 is secured by adhesive 29 in an aperture 28 of a shim 27 secured between partition 23 and waveguide portion 19. The shim 27 and partition 23 are made of gold-plated brass. The tapered lips 24 of the iris 22 provide a high potential gradient in the ionizable gas in the capsule 26 and transfer heat from the capsule to the brass waveguide 16 which acts as a heat sink.
Patent GB-1073189-A (GB)
Title: Improvements in and relating to electrical measuring and like instruments
Inventor: HOLMES BRUCE
IPC: G01R27/02
Filed: 1963-12-19
Abstract: 1,073,189. Measuring variation of resistance with voltage. ELECTRONIC INSTRUMENTS Ltd. March 18, 1965 [Dec. 19, 1963], No.50160/63. Heading G1U. A resistance measuring apparatus arranged to determine the variation of high resistance with applied voltage, and wherein a voltage source is connected by way of the resistance to a current sensitive device, comprises a common control which is arranged to vary both the voltage applied from the source to the resistance and the current sensitivity of the device, so that the response of the device to a given value of resistance remains constant. In one arrangement, the voltage applied to the resistance to be measured 6 is derived from a potentiometer 11 connected across a stabilized supply 10. The current through the resistance is applied to a high input impedance electrometer type D.C. amplifier 12, whose output is supplied to an indicating instrument 3. The output circuit also includes a variable resistor 13 which is included in a negative feedback path for the amplifier, so that the amplifier sensitivity may be varied. The wipers of the potentiometer 11 and resistor 13 are ganged together so that the applied voltage and the current sensitivity of the amplifier 12 will be varied inversely together. An alternative arrangement using a switched rather than a continuously variable control is described, Fig.3 (not shown).
Patent GB-1145950-A (GB)
Title: Coupling mechanism
IPC: F02C7/275
Filed: 1967-11-08
Abstract: 1,145,950. Clutches. UNITED AIRCRAFT CORP. 8 Nov., 1967 [13 Dec., 1966], No. 50912/67. Headings F2C and F2L. [Also in Division F1] The transmission between a gas turbine 10 and its starter 14 includes a dog clutch 34, the members 30, 38 of which are synchronously engageable under the control of a sprag clutch 50 and an axial cushioning spring 66. The clutch member 30 is connected to the starter shaft 26 through a splined shaft 44 while the member 38 is directly connected to the engine shaft 28. The inner race member of sprag clutch 50 is formed at one end of an axial shaft 46, the other end being connected by pins and helical slots 60 to a sleeve 64 engaging the cushioning spring 66. Clutch element 30 is engaged by links 92 actuated by a solenoid 88 and is held in the disengaged position shown by a pawl 82 which enters an external groove 84 in a ring 86 encircling clutch member 30. Clutch operation.-Engagement is initiated by energizing solenoid 88 so that arms 92 move clutch member 30 to the right, pawl 82 being retracted and held by the plunger of a second solenoid 98. At the same time the sprags of clutch 50 are advanced into a circular opening 104 in a housing 78 of the clutch member 38. Solenoid 88 is then de-energized and power applied to starter 14 to rotate shafts 26, 44, 46. Upon locking of the clutch sprags to housing 78 rotation of shaft 46 occurs and this, through the pins and slots 60, causes rightward movement of sleeve 64 which is transmitted by spring 66 to clutch member 30, which immediately engages the second clutch member 38 if their facial teeth are suitably positioned. If not, sleeve 64 continues to advance, compressing spring 66 until the teeth are properly positioned for final engagement, the spring acting to prevent overloading of the sprag elements. When the speed of engine shaft 28 exceeds that of starter shaft 26 the direction of drive is reversed through dog clutch 34 and sprag clutch 50 is rendered inoperative. To effect disengagement solenoid 98 is operated to release pawl 82, which drops into an external thread on the decoupling ring 86 which is moved axially to separate clutch members 30, 38, and at the same time withdraw the sprag clutch 50 from housing 78.
Patent GB-1526730-A (GB)
Title: Apparatus for the dispensing of beverages
IPC: F04B49/02
Filed: 1975-10-09
Abstract: 1526730 Controlling pumps BRITISH SYPHON INDUSTRIES Ltd 9 Oct 1975 [25 Nov 1974] 50957/74 Heading F1A An electric motor-driven pump 12 supplying beer to a tap 16 is controlled so that it starts when the tap is opened and stops a predetermined time after the tap is closed. In the arrangement shown, a pressure switch 20 in the pump delivery line 18 closes when tap 16 is opened and energizes a relay 22 to close motor switch 24. When tap 16 is closed, switch 20 opens but relay 22 keeps motor switch 24 closed until a capacitor 26 has discharged. In Fig. 2 (not shown), pressure switch 20 is replaced by a switch mechanically operated by the tap. In Fig. 3 (not shown), the relay and capacitor are replaced by a single-acting dashpot (42) incorporated in a pressure switch. In Fig. 5 (not shown), a single-acting dashpot controls a motor switch mechanically actuated by the tap. The time delay alternatively may be provided by an electric motordriven timing device.