baber/WOPTO huggingface dataset:
Patent GB-1520795-A (GB)
Title: Bolt for windows or doors
IPC: E05B15/10
Filed: 1975-10-21
Abstract: 1520795 Bolts YOSHIDA KOGYO KK 21 Oct 1975 [22 Oct 1974] 43205/75 Heading E2A The degree of projection of a sliding bolt 16 is adjusted by longitudinal movement of a detent plate 23 within the bolt housing. This plate is secured by screw 26 and has shoulders 31 to detain the bolt handle which may be rotated with the bolt in the usual way. A spring 32 biasses the bolt to its retracted position.
Patent GB-1201827-A (GB)
Title: A process for the preparation of aluminium astringent compounds
Inventor: UGELOW ISIDORE
IPC: C07F5/06
Filed: 1968-09-11
Abstract: 1,201,827. Aluminium derivatives of polyols and glycol ethers. ARMOUR PHARMACEUTICAL CO. 11 Sept., 1968 [21 Sept., 1967], No. 43291/68. Heading C2C. Aluminium-containing astringent compounds are prepared by reacting an aluminium compound of formula Al 2 Cl (6-x) (OH) x  where x is 0 or an integer from 1 to 5, with an aliphatic alcohol containing at least two hydroxyl groups or an aliphatic glycol monoether in the presence of sufficient water to dissolve the reactants and then removing the water from the system by adding thereto an organic, watermiscible solvent which is free of hydroxyl groups. Alcohols and glycol ethers specified are ethylene glycol, propylene glycol, 1,4-butanediol, glycerol, 1,2,6-hexane triol, 1,2,4-butanetriol trimethylol propane and polyoxyalkylene glycols. The organic water miscible solvent may be acetone, ethyl methyl ketone, propionaldehyde, dioxane, acetonitrile, propionitrile or tetrahydrofuran, and is preferably used in an amount of 5 to 15 volumes per volume of aqueous solution.
Patent GB-1399393-A (GB)
Title: Phase comparator circuits
IPC: H03L7/085
Filed: 1972-09-19
Abstract: 1399393 Phase comparators; colour television SONY CORP 19 Sept 1972 [21 Sept 1971] 43424/72 Headings H3T and H4F A phase comparator comprises first, second, third and fourth PN junctions 10, 11, 13, 14 connected in series between a pair of input terminals such that adjacent PN junctions are connected in opposite conductive directions to each other, first and second switching devices 19, 20 connected between the respective junction points of 10, 11; 13, 14 and a power supply terminal, a reference signal source 6 connected to at least one of the switching devices 19, 20 to alternately switch them on and off so as to render the third and fourth junctions 13, 14 alternately conductive to derive an output signal at 15 representative of the phase relationship between an input signal 1 and the reference signal. The first, fourth junctions as well as the switching devices may be formed by transistors. In a colour TV receiver, the input at 1 will be a modulated chrominance signal while the reference signal will be the reference sub-carrier so that a demodulated colour signal is obtained at 15. Fig. 3 shows a colour demodulator for demodulating three colour difference signals (R-Y), (G-Y) and (B-Y) from a chrominance signal. By suitable choice of resistors 29 to 33, three colour difference signals which will produce a white balanced colour picture are obtained at terminals 15B-Y, 15G-Y and 15R-Y. In the embodiment of Fig. 4 (not shown), the biasing resistors 17, 18 are replaced by a transistor diode combinations. In the embodiment of Fig. 5 (not shown), the emitters of the input transistors 10, 11 are connected to earth via resistors (38, 39) and biasing diodes (40, 41) are connected between the emitters of transistors 10, 11 and the collectors of switch transistors 19, 20 so that diode 14 conducts when transistor 19 is on. In the alternative embodiment of Fig 6 (not shown), the emitter resistors (38, 39) of transistors 10, 11 are replaced by further transistors driven into conduction for only half the input cycle. In the embodiment of Fig. 7 (not shown shown), the diodes 13, 14 are replaced by a bridge of diodes. In the embodiment of Fig. 8 (not shown), the input transistors are replaced by suitably biased diodes.
Patent GB-1058229-A (GB)
Title: Improvements in the treatment of acrylic fibers
IPC: D06M11/70
Filed: 1963-11-04
Abstract: Polyacrylonitrile fibres are whitened and given an improved colour stability to heat and ultraviolet light and their basic dye uptake is improved by treating them after spinning with ammonium hypophosphite or aluminium hypophosphite or a mixture thereof prior to drying and then subjecting them to the action of steam under at least atmospheric pressure.  The ammonium or aluminium hypophosphite or mixture thereof may be applied to the fibres as an aqueous solution by spraying, as an additive to the finish bath containing for example sorbitol monopalmitate and a quaternary ammonium compound, by wicks or by the use of rolls in an amount of 0.01 - 1% based on the weight of the fibres.  The fibres may be made from polyacrylonitrile, from a copolymer containing at least 80% by weight of acrylonitrile or from a blend comprising polyacrylonitrile or copolymers comprising acrylonitrile with 2-50% by weight of another polymeric material, the blend having an overall polymerized acrylonitrile content of at least 80% by weight.  In the copolymers the acrylonitrile may be copolymerized with acrylic, cinnamic or methacrylic acid, methyl, ethyl, butyl or methoxymethyl methacrylate or acrylate, methacrylonitrile, acrylamide or methacrylamide or monoalkyl substitution products thereof, methyl vinylketone, vinyl acetate, propionate or stearate, N-vinyl phthalimide, N-vinyl succinimide, methylene malonic esters, itaconic acid or esters thereof, N-vinylcarbazole, sodium p-sulphophenylmethallylether, vinyl furane, alkyl vinyl esters, vinyl sulphonic acid, diethyl citraconate or mesaconate, styrene, vinyl naphthalene, vinyl pyridines, alkyl substituted vinyl pyridines, 1-vinyl-imidazole or alkyl substituted 1-vinyl-imidazoles.
Patent GB-435133-A (GB)
Abstract: 435,133. Elastic-diaphragm pressure gauges. STOKOE, C. L., 11, King Edward's Road, Newcastle-on-Tyne. March 17, 1934, Nos. 8408/34, 9272/34, 3005/35, 6968/35, and 7216/35. [Class 106 (ii)] Comprises particular constructions of pressure and vacuum alarm devices of the kind in which the pressure fluid acts on one side of a diaphragm the other side of which is acted upon by a spring under compression, a spindle attached to the diaphragm moving, at the pressure or vacuum for which the device is set, to operate an electric or mechanical alarm. In the form shown in Fig. 1, the casing is made in two parts a, b between which the diaphragm is clamped. A distributing disc f on a spindle g is acted upon by a spring which has an abutment against a skirted piston i which is adjusted by a screw k, the pressure for which the device is adjusted being indicated by a pointer l passing through a slot in the casing and moving over a scale m. The pressure fluid is admitted through a pipe d, and a pressure gauge e is fitted. The screw may be threaded through the end of the casing and provided with an index ss as shown in dotted lines. An antifriction washer kk may be fitted to obviate friction through twist of the spring. In a modification for a vacuum a distributing disc is attached to the diaphragm at each face and the skirted piston is inverted. The pressure and devices may be arranged in line and have a common pressure fluid chamber as shown in Fig. 3, or they may be arranged side by side and have a common pressure fluid chamber. The movement of the rod g may engage a spring strip A, Fig. 5, carrying a contact 1 bringing it to engage a contact 2 carried by a strip B and thus making a circuit 1, 2 and breaking the circuit 3, 4. The device may work between high and low limits. The spindle may normally keep a valve closed by acting on the valve directly or through a lever and when the pressure falls sufficiently release the valve to cause fluid to pass and actuate a whistle. Again, the spindle g may itself act as a catch or release a catch as shown in Fig. 8. Here, when the pressure falls, the catch x<1> is tripped and the spring lever a<2>, y<1> swings to open the valve s<1>. A switch may be similarly tripped. According to the third Provisional Specification a relief valve may be included to prevent excess of pressure on the gauge or diaphragm. Specifications 177,227 and 178,545, [both in Class 106 (ii)], are referred to.
Patent GB-928728-A (GB)
Title: Improvements relating to acoustic panels
Inventor: TRELAWNY MARY
IPC: E04B1/86
Filed: 1960-12-21
Abstract: 928,728. Building panels, walls. APPLIED ACOUSTICS Ltd. Nov. 16, 1961 [Dec. 21, 1960], No. 43956/60. Classes 20 (4) and 87 (1). An acoustic panel in or for a house or kiosk is of a particulate material such as wood chips, asbestos, or a synthetic resin and has circular or elliptically sectioned cavities 14 preferably extending from one end of the panel to the other filled with lead, or when assembled in a structure, sand. The panel may also include soundabsorbing chambers 15 which communicate with the faces of the panel by slots, grooves, or holes. A structure may comprise panels in parallel spaced relationship.
Patent GB-1438530-A (GB)
Title: Trolley having castors each provided with a locking mechanism
IPC: B60B33/02
Filed: 1973-09-20
Abstract: 1438530 Castors A VAN DE WALLE 20 Sept 1973 [27 April 1973] 44135/73 Heading A4U [Also in Division F2] A trolley with rear castors 1, 1' and front castors 2, 2' includes a rod and lever system 5-10 to operate locking mechanisms of the castors. Each locking mechanism which is accommodated in a respective sleeve 4 is actuable by the rod and lever system 5-10 via a cam in the sleeve and has three positions, a first in which the wheel of the castor is free, a second in which the wheel can no longer pivot and a third in which the wheel can no longer pivot or rotate. The system 5-10 comprises a rear rod 5 and a front rod 6 both of hexagonal cross-section and connecting with the cams in the sleeves 4. Between the rods 5, 6 are pivotally inter-connected an arm 7, a link 9 and an arm 8 and a pedal or handle 10 is provided on the rear rod 5, which handle or pedal 10 is operable to bring the rods 5, 6 into three different positions as illustrated respectively in Figs. 2, 3, 4 (not shown). The radial distance between the axis of rod 5 and the pivotal axis of the connection between the link 9 and arm 7, and the radial distance between the axis of rod 6 and the pivotal axis of the connection between link 9 and arm 8 are in the ratio 84:55  (e.g. 84 mm and 55 mm). When the handle 10 is in the horizontal position (Fig. 2), the arm 7 is directed forward at an angle of 25 degrees to the vertical, the arm 8 is directed vertically downwardly and the locking mechanisms of the castors do not act. When the handle 10 is raised by an angle 30 degrees above the horizontal (Fig. 3) the rod 5 moves through 30 degrees which leaves the rear wheels free, but the rod 6 moves through 60 degrees to actuate the locking mechanism of the front wheels which can turn but no longer pivot. When the handle 10 is lowered through 60 degrees below the horizontal (Fig.4) all four wheels are locked and prevented from pivoting or rotating.
Patent GB-1221578-A (GB)
Title: Apparatus for measuring the current at the individual electrodes of electrolytic cells
Inventor: SCHMEISER KURT
IPC: G01R15/04
Filed: 1968-09-18
Abstract: 1,221,578. Current measurement. KNAPSACK A.G. Sept. 18, 1968 [Sept. 22, 1967], No. 44362/68. Addition to 1,144, 282. Heading G1U. [Also in Division G3] In a system for determining the currents passing through the individual electrodes of an electrolytic cell, so as to determine whether these electrodes need to be adjusted, voltages across resistors 1, 2, 3 in series with respective electrodes, are applied cyclically, by operating a selective switching mechanism incorporating switches 8, 9, 10 in series with the output leads from the resistors, under the control of a timed impulse generator 7, to a compensation system in which the voltage from a selected resistor is compared with a reference voltage corresponding with the mean electrode current. The difference voltage represents the deviation in the current in the selected resistance from the mean electrode current and is passed to a limit monitor. This monitor generates an output if the voltage difference is outside a predetermined tolerance range, the output being on one lead if the difference is positive and on another if it is negative. The compensation system has an input potentiometer 15, which is adjusted in accordance with the average current flowing through each electrode of the whole cell, so that if the average current is flowing in the particular electrode under test, balance between the test and reference voltages will be achieved and no fault indication given. The total cell current is measured as a voltage across a resistor 21 through which it flows, by a potentiometric method in which the wiper of a potentiometer 25 is automatically adjusted to represent the current, the wiper of this potentiometer being mechanically coupled to that of the potentiometer 15. Each detector resistor in the individual electrode leads has a potentiometer 4, 5, 6 &c. in parallel with it, this being adjusted so that when the mean current flows through the resistor, the correct output voltage is obtained (corrected for resistance variation &c. The indicator system incorporates a pair of differently coloured lamps for each electrode, one being illuminated when the current is below the permissible tolerance range, the other when it is above. The signals from the limit monitormay in addition be applied to a computer which effects automatic adjustment of the electrodes. Furthermore the system may be used to test cyclically the potential drop across transistion resistances in the electrode leads, due to soldered on mechanical joints &c. the values determined being used to achieve accurate correction of the electrode currents.
Patent GB-1449449-A (GB)
Title: Control of burners for kilns
IPC: F23N1/02
Filed: 1972-09-27
Abstract: 1449449 Burners BRITISH GAS CORP 18 Dec 1973 [27 Sept 1972] 44560/72 Heading F4T In a control system for gaseous fuel burners for firing lime kilns, the main air supply line has a main valve 24, Fig. 1, and the main fuel supply line has a main valve 38 and auxiliary valves 40, 42, 44 in downstream branches. The main valves 24, 38 are interconnected so that alteration of the setting of one alters the setting of the other. Moreover, the valve 42 is controlled by the flow in the air line by means operatively connected to the air line downstream of the valve 24. The main gaseous fuel line is also provided with an isolating valve 28, a filter 30, a pressure regulator 32, a flow meter 34 and a master safety shut-off valve 36. The main air line also includes a butterfly valve 26. Six gaseous fuel burners 10 are equally spaced circumferentially around the kiln and are supplied with air and gaseous fuel via manifolds 16, 18. The burners may be fired by spark ignition but in the embodiment shown they are fired by pilot burners supplied with air and gaseous fuel via manifolds 14, 12. During starting the valve 26 is open, the interconnected valves 24, 38 are set for low flow, valve 40 is closed and valve 44 is open. The light up of the burners is programmed through an electrical control system, Fig. 2 (not shown), to provide sequential purging, valve proving and pilot flame establishment before main gas flow is initiated. Once main flames are established the main gas and air flows are increased to bring the kiln up to temperature by opening the interconnected valves 24, 38, the air/gas ratio being controlled by the air-flow responsive valve 42. When normal operating temperature is established the demand for air from the main line may reduce since other air will enter the kiln. Thus the valve 40 is opened to bypass the valve 42 and the air/gas ratio is set by adjusting the valve 26.
Patent GB-1484364-A (GB)
Title: Transducer
IPC: G01L9/00
Filed: 1974-10-17
Abstract: 1484364 Measuring pressure electrically SIEMENS AG 17 Oct 1974 [17 Oct 1973] 45108/74 Heading G1N A transducer responsive to pressure in a first liquid comprises a measuring cell and a connecting tube having one end opening into the cell and the other end open for immersion in the first liquid; means for introducing a second liquid into the whole of the connecting tube and part of the cell so as to trap gas in the cell; and means for generating an electrical signal representing the volume of trapped gas. A cylinder 1 communicates with one end of a connecting tube 9, e.g. a catheter, which, with the end of a filling tube 2, defines a measuring cell 4 within the cylinder 1. A capillary 5, extending from the filling tube 2 along most of the axis of the cell 4, allows the connecting tube 9 and part of the cell 4 to be occupied by liquid, e.g. physiological saline solution, admitted via a valve 10. When the free end of the connecting tube 9 is immersed in a specimen liquid, e.g. by insertion in a blood vessel, hydrostatic pressure compresses the gas 8 trapped in the cell 4 and increases the conductance between two platinum wires 3 extending along the radial gap between the cylinder 1 and the tubes 2 and 9 and sealed into the assembly with epoxy resin 6. A 25 KHz bridge 11-15 supplying 100 mV provides measurement and a display on a control signal. Non-linearity inherent in the response of the cell and bridge may be corrected by analogue or digital means. Compensation for thermal variations in the trapped air volume 8 is conveniently inherent in the thermal variation in the electrical conductivity of the saline 7. For safety the transducer is connected to an isolating amplifier 14. In another embodiment the wires 3 are embedded in an insulative cylinder shown in broken lines at 16, the liquid 7 then preferably having a high dielectric constant and low conductivity. The dielectric constant of the liquid 7 may be chosen to compensate for thermal expansion of the air volume 8. The embodiment has an outer diameter of 1À3 mm and the length of the capillary 5 is 1À9 mm. This arrangement is found to have, in response to fluctuating pressure, a resonant frequency of 95 Hz and a damping factor of 0À5.
Patent GB-1475565-A (GB)
Title: Liquid crystal display assembly
IPC: G02F1/13
Filed: 1974-10-18
Abstract: 1475565 Controlling light INTERNATIONAL BUSINESS MACHINES CORP 18 Oct 1974 [6 Dec 1973] 45321/74 Heading G2F The inner surface of one of the plates of a liquid crystal display cell is coated with a transparent polyimide layer to render the liquid crystal layer more optically uniform and to increase the contrast of the display. In a first embodiment the coating is applied over a continuous thin film electrode, and a segmented electrode is provided in the other plate. In a second embodiment, one plate comprises an uncoated continuous electrode and the other plate comprises, in order, a glass substrate, a reflective AL layer, a polyimide layer, a segmented electrode, and a second polyimide layer. As in Specification 1438837 the second layer has regions of different thickness, multiple layer deposition with screening, whereby different  regions of the liquid crystal layer may be addressed by varying the frequency of an applied voltage, the threshold voltage being frequency dependent. The edge of the cell is also of polyimide material. As described the cell exhibits dynamic scattering. The polyimide layers are up to 13Á thick, preferably 5-10Á, and are preferably formed by heat using a polyamic acid intermediate deposited on the plate by dip or spin coating of a solution thereof.
Patent GB-1329957-A (GB)
Title: Valve for use in hydrulic or pnematic control systems
IPC: F15C3/00
Filed: 1971-09-29
Abstract: 1329957 Fluidic elements ROBERT BOSCH GmbH 29 Sept 1971 [9 Oct 1970] 45348/71 Heading G4P [Also in Division F2] A valve for use as a switching device in hydraulic or pneumatic control systems, comprises an annular chamber 8, Fig. 1, e.g. of circular or elliptical cross-section, having inlet ducts 22, 23 and an outlet duct 24 in one wall thereof and control ducts 12, 13 in its other wall. The lands 25 to 28 and 14 to 16 adjacent the ducts, define seating surfaces for the valve closure member 9. The latter is formed as a resilient split ring or band, e.g. of steel or plastics, and is pre-stressed against the outer wall of chamber 8. The valve of Fig. 1 is arranged to have a NOT function. When the control ducts are pressurized, the band 9 sealingly co-operates with the lands 25 to 28 to prevent flow between the inlet and outlet ducts. The inlet and outlet ducts are of part-annular form and communicate with, and progressively deepen towards, respective inlet and outlet passages (32, 31), Fig. 3 (not shown), in casing 1, the passages communicating with inlet and outlet pipes (p and y). The control pressure may be taken from the inlet pipe. The differential force across band 9 may be increased by throttle means disposed in the inlet pipe downstream of the branch for the control pipe x. The inlet and discharge ducts may be interchanged. In Figs. 5 and 6 (not shown), the control ducts are arranged in the outer wall of the chamber, and the inlet and outlet ducts are arranged in the inner wall, the band (9) being pre-stressed towards the inner wall. Fig. 7 (not shown) relates to an embodiment suitable for pressures of 100 atmospheres, and has six control ducts (55), four inlet ducts (57) and two outlet ducts (58). The valve shown in Fig. 9 controls two separate circuits via a common control pipe-line x, and has two annular chambers 60, 61 each containing a respective band 62, 63 and associated with respective control ducts 65 and 64. In a similar construction, Fig. 11 (not shown), the two annular chambers are connected in series with respect to the fluid flow, and each chamber is connected to an independent control pipe-line so that the valve has an AND function. Alternatively, in a construction having an OR function, Fig. 13 (not shown), the annular chambers are connected in parallel. In Fig. 15 the outlet duct 80 of an annular relay chamber supplies the control ducts 81 of a main annular chamber, passages 85, 86 and throttle 87 relieve the pressure at the outlet side of the annular relay chamber when the outlet duct 80 is closed by band 9. In a final embodiment, Fig. 17 (not shown), a solenoid pilot valve (90) is incorporated in the flow passage leading to control ducts in the inner wall of an annular chamber.
Patent GB-1011223-A (GB)
Title: Improvements in or relating to electric cables
IPC: H01B1/24
Filed: 1961-12-19
Abstract: An electric cable has an insulating sheath comprising a copolymer of ethylene and styrene, preferably made using a Ziegler catalyst, in which the styrene content is from 5 to 50%, preferably 5 to 30%, by weight.  A butyl-rubber mixture of high conductivity which may be extruded on to the conductor comprises, by weight, 45% butyl rubber, 1.2% zinc oxide, 0.7% sulphur, 0.5% tetramethylthiuram disulphide, 0.2% zinc dimethyl dithiocarbamate, 24.3% acetylene black, and 28.1% graphite.
Patent GB-1153936-A (GB)
Title: Semiconductor Device Having Stable Electrical Parameters
Inventor: BILEK MIROSLAV
IPC: H01L23/16
Filed: 1967-10-06
Abstract: 1,153,936. Passivating layers on semi-conductor devices. TESLA NARODNI PODNIK. 6 Oct., 1967, No. 45688/67. Heading H1K. The active part of a semi-conductor device surface is passivated by a coating comprising at least one perchlorate of alkaline metals or alkaline earth metals. Particular perchlorates referred to are those of Na, Ca, Be, Mg and Ba, used singly or in combination to passivate, for example, diodes or Ge transistors. The perchlorate may be in powdered form, or may be mixed with a liquid or paste binder such as silicone oil or paste respectively. In all these cases the passivating material is placed in a device container and the semi-conductor body is then embedded or immersed in it, after which the container is hermetically sealed. If a hardenable polymeric material such as silicone rubber is mixed with the perchlorate the container may be dispensed with. The perchlorate is believed to prevent ion migration into the semi-conductor surface and to attract ions from the semi-conductor surface. Reference is made to the prior art use of sulphides as passivating layers.