baber/WOPTO huggingface dataset:
Patent GB-1017925-A (GB)
Title: Improvements relating to the handling of photoconductive workpieces under lamps
IPC: G03G15/04
Filed: 1962-12-07
Abstract: 1,017,925. Safelights. AUSTRALIA, DEPT. OF SUPPLY. Dec. 7, 1962 [Dec. 8, 1961], No. 46371/62. Heading H1F. For handling a photoconductive workpiece under a light source, a film of photoconductor material is interposed between the source and the workpiece, the photoconductor material of the film being similar to that of the workpiece so that the absorbtion bands of the materials coincide and the film absorbs light which would otherwise be absorbed by the workpiece. The coating may be applied to the envelope of an electric lamp and may consist of the photoconductor embedded in a resin of high electric resistivity, the coating being between 1 and 100 microns thick. Where the photoconductor is not of the continuous type, the volume of photoconductor is about four times the volume of the bonding medium. Examples are given of compositions containing alkyd resin Rhodene M8 and either zinc oxide, antimony trioxide, cadmium sulphide or bismuth thioxide, for use in each case with papers containing the same photoconductor. For use with selenium film or plates, a film of selenium may be vacuum evaporated on to the surface of the lamp.
Patent GB-1116939-A (GB)
Title: Improvements in the manufacture of woven fabrics suitable for the production of flexible transmission means
IPC: D06M15/39
Filed: 1965-11-02
Abstract: Lengths of fabric woven from yarn which is partly of cotton and partly of polyethylene terephthalate fibres suitable for the production of flexible transmission means e.g. spindle tapes, are impregnated throughout with a solution in an organic solvent without significant deleterious effect on the fabric e.g. methyl or ethyl alcohol, of an acrylic resin and a nylon resin, and dried.  The acrylic resin may be a homopolymer of an acrylic ester, e.g. butyl acrylate, or a copolymer thereof with, for example, vinyl acetate or vinyl isobutyl ether.  The nylon resin may be one having a melting point below about 200 DEG C and an intrinsic viscosity of 0.9-1.1 and one which is capable of being dissolved in a lower alkyl alcohol. The solution may contain 5-10% by weight of acrylic resin and 1-3% by weight of nylon resin and the proportion of nylon resin to acrylic resin may be 1 part by weight of nylon resin to 3 parts by weight of acrylic resin.  The impregnating solution may also contain water which acts as a plasticiser for the nylon resin.  Transmission means may be produced by fusing together the ends of the impregnated length of woven fabric by a fusion process using heat and pressure with if desired the insertion of an intermediate strip of relatively low melting point nylon polymer.
Patent GB-1369317-A (GB)
Title: Treatment of aqueous media
IPC: C02F1/52
Filed: 1972-10-09
Abstract: 1369317 Purification of aqueous medium FMC CORP 9 Oct 1972 [8 Oct 1971 22 May 1972] 46530/72 Heading C1C A process for the treatment of aqueous liquids having solids present therein comprises mixing the liquid with the following additives, a bactericidal agent, a colloidal solids coagulating agent, a filter aid and an absorbent, passing the resultant mixture through a liquid- and air-tight system so as to effect intimate mixing of the additives and liquid, and to maintain solids in suspension, and then separating the liquid portion of the suspension from the solids associated therewith. Prior to or after mixing the additives, the liquid containing solids may be subjected to a disintegration step to break down the size of the solids. The bactericidal agent is preferably a halogen-containing chemical (e.g. calcium hypochlorite), the filter aid is preferably a diatomaceous earth, the absorbent may be activated carbon, fullers' earth, bauxite or a synthetic polymer, and the colloidal solids coagulating agent may be an aluminium or ferric salt. A further additive, in the form of a pH control agent, may be incorporated in the liquid. A suitable pH control agent is an alkali metal salt. The process may be carried out in the apparatus shown in Fig. 1, wherein waste is mixed with additives in the toilet 10 and passes via pipe 12 to the holding tank 15. Mounted within this tank is a manually actuated pump 19. The waste and additives pass through inlet 20 and check valve 22 to internal chamber 21. A flexible diaphragm 23, actuated by rod 24, exerts a pressure on the liquid-additive mixture in the chamber 21. Solids in the liquid are disintegrated on passage through check valves 22 and 26. The resultant mixture is returned to the holding tank via outlet 27. The liquid-additive mixture then passes to filter tank 29 for separation. In alternative forms, the apparatus may contain a pressure filter or a rotary vacuum filter.
Patent GB-465457-A (GB)
Abstract: 465,457. Power meters. TRIGGS, W. W. (Doble Engineering Co.) Oct. 1, 1935, No. 30119/36. Divided out of 465,205. [Class 37] A wattmeter preferably having a high impedance current circuit formed by a large number of turns of fine wire and suitable for measuring energy loss in insulation of high resistance and low charging current, is provided with an inductive compensating circuit for neutralizing the inductive effect of the voltage circuit of the instrument upon the current circuit due to capacitance connected in parallel with the latter, this capacitance being either due to the current windings and their relation to metal parts of the instrument or to the external circuit. The neutralizing winding consists of an inductance Ll connected across the current coils Lc of the wattmeter and in order that the inductive effect may be readily adjusted to the required value a resistance R which is adjustable is inserted in series with the inductance. The inductance and resistance are preferably mounted in a case separate from the wattmeter and the resistance is adjusted to such a value that when the correct alternating voltage is applied to the voltage circuit terminals 3, 4 and a condenser having a capacity equal to that of the circuit with which the instrument is to be used is connected to the terminals 1, 2, the indicator of the instrument occupies its zero position. When the compensation is to be made for internal capacitance alone, the external condenser is omitted. The wattmeter is particularly adapted for use with apparatus for testing an insulator, one terminal of which is earthed and the other is connected to one end of the secondary winding of a transformer by a cable provided with internal and external shields, the former of which is connected to the other end of the secondary winding and through the current coils of the wattmeter to earth. The outer shield is earthed. The voltage windings of the instrument are connected to the primary of the transformer. U.S.A. Specification 1,945,263 is referred to.
Patent GB-952132-A (GB)
Title: A method of fixing headed studs to metal articles
Inventor: WAIN GERALD IVAN
IPC: H02G3/14
Filed: 1961-12-29
Abstract: 952,132. Securing bolts to work. WANDSWORTH ELECTRICAL MANUFACTURING CO. Ltd. Dec. 31, 1962 [Dec. 29, 1961], No. 46568/61. Heading F2H. In a method of fixing a bolt 3 to one surface of a metal cover plate 1, a flat bottomed recess adapted to receive the head 3a of the bolt is drilled or otherwise formed in the plate 1 and an annular groove 5 is drilled or otherwise formed around the recess to provide an annular wall 6, which after insertion of the head of the bolt in the recess, is turned over inwardly of the recess into intimate contact with the head.
Patent GB-1280895-A (GB)
Title: Method of making a magnetic head
IPC: C04B37/00
Filed: 1969-09-22
Abstract: 1280895 Magnetic heads MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 22 Sept 1969 [25 Sept 1968 22 Oct 1968] 46658/69 Heading G5R A magnetic head is made by employing layers 4, 5 on core members 1, 6 one of the layers having a melting point at which the magnetic properties of the members, such as ferrite, deteriorate, the layers being made of different components, such as SiO 2  and PbO which vitrify when heated to a lower temperature. A third layer of ZnO may be used. In modifications, the layers may be on both core members or one layer on each member (Figs. 2a and 2b) and the join may be strengthened by melting glass balls (8, Figs. 5a and 5b). In a further modification (Figs. 4a and 4b) a spacing strip of Ti or Cr is used and ground away after the vitrification is complete, a pair of long members being used and subsequently cut into a series of heads. Borosilicate and phosphorus silicate glasses may be formed as alternatives. The layers are preferably formed by a sputtering process, Fig. 3 (not shown).
Patent GB-901482-A (GB)
Title: Improvements in or relating to the fitting of windows, vehicle windscreens or the like
IPC: B60J1/02
Filed: 1957-11-15
Abstract: 901,482. Mounting vehicle windscreens &c. FROW, H. A. Nov. 17, 1958 [Nov. 15, 1957; Nov. 28, 1957], Nos. 46756/61 and 46757/61. Divided out of 901,481. Class 20 (3). A window or vehicle windscreen &c. consisting of a pane 1 of glass &c. provided around its marginal edge with a glazing strip 4 having resilient inner and outer flanges 7, 6 for gripping engagement with the inner and outer faces of the opening surround of a panelling 2, is fitted into the opening by holding the inner flange 7 retracted along its whole length by means of a plurality of rods each shown as a channelmember 8 and presenting the pane to the opening and the retracted flange 7 passed through to enable the other flange 6 to be engaged by the surround, whereupon the tools are released from the flange 7 and removed from the window to permit the flange 7 to return to its initial position and engage the panel 2. Several kinds of tools for the purpose are described and claimed in Specification 901,481 [see Group XXIII].
Patent GB-469437-A (GB)
Abstract: 469,437. Electroplating. ALBIN, C. June 20, 1936, No. 17205. [Class 41] A plating device comprises a sponge 10 mounted over a carbon rod anode 4 at the end of a tubular metal sheath containing an electrolyte reservoir 15 and a housing 1 for one or more dry batteries 2, the positive terminal of which is connected to a filling stopper 16 on the reservoir 15 and thence to the rod 4, and the negative terminal to a clip 8 for attachment to the work to be plated. The electrolyte is supplied to the sponge through a perforated metal disc 13. The metal deposited is drawn exclusively from the electrolyte. A cap 14 may be mounted over the sponge 10. In a modification, the electrolyte reservoir is dispensed with, the sponge being soaked with electrolyte as required. Specification 469,438 is referred to.
Patent GB-1208598-A (GB)
Title: Improvements in or relating to methods for providing mask patterns in the manufacture of solid state devices
Inventor: SCHMIDT RUDOLF
IPC: H01L21/00
Filed: 1967-10-18
Abstract: 1,208,598. Semi-conductor device. WESTERN ELECTRIC CO. Inc. 18 Oct., 1967 [20 Oct., 1966], No. 47360/67. Heading H1K. A mask pattern in a silicon dioxide layer on a silicon semi-conductor body is produced by using a photoresist and includes the steps of producing on the layer a light transmitting film which also inhibits light reflection from the surface of the layer during production of the mask pattern in the photo-resist, the film being composed of Cr 100 Š thick or Ni 200 Š thick. A transistor 11 is covered with SiO 2  12 by oxidation or deposition. A film 13 of Cr is deposited and a photoresist layer 14 provided. After exposure and development, the layer 14 is partially removed and the exposed portion of film 13 etched away with HCl+HF whilst the exposed oxide layer 12 is removed with NH 4 F. The remaining photo-resist and metal layers are removed and metal deposited on to the body 11 to give interdigitated electrodes (Fig. 3, not shown). When Ni is used the etchant is HNO 3 + HCl.
Patent GB-1327443-A (GB)
Title: Contactless relay
IPC: H03K17/90
Filed: 1970-09-07
Abstract: 1327443 Magneto-sensitive resistor switching circuits GEHAP GES FUR HANDEL UND PATENTVERWERTUNG mbH & CO KG 7 Aug 1970 [8 Oct 1969 21 Oct 1969 9 June 1970] 47629/70 Addition to 1267951 Heading H3T [Also in Division H1] A contactless relay comprises a magnetic field sensitive resistor located inside a coil carrying a control current, the resistor being connected across the input of a two stage common emitter amplifier. As shown in Fig. 10 the resistor 4 is located in the control coil 1 and connected to a transistor logic circuit. In Fig. 1 two magnetic field sensitive resistors 4, 5 separated by insulation 10 are located between ferromagnetic plates inside coil 1. A similar plate may replace layer 10 (Fig. 2, not shown). Further resistors may be arranged in a stack and/or side by side (Figs. 3-5, not shown). The resistors may be let into the ends of the plates (Figs. 6 and 7, not shown). In Fig. 11 (not shown) the resistor is arranged at an angle to the length of the coil.
Patent GB-1490725-A (GB)
Title: Demodulation circuit for colour television signals
IPC: H04N9/465
Filed: 1974-11-05
Abstract: 1490725 Colour television INDESIT INDUSTRIA ELETTRODOMESTICI ITALIANA SpA 5 Nov 1974 [7 Nov 1973] 47760/74 Heading H4F The phase of a PAL-switch 14 in a colour television receiver is controlled in response to the output of a phase comparator 11 receiving one input from a subcarrier regenerator 12 and the other input from a burst gate 6 via a switch 9 synchronized with PAL-switch 14 and a 90 degree phase delay 10. If switches 9 and 14, controlled by a multivibrator 8, are operating in the correct phase all the bursts received by phase comparator 11 are of a constant phase (+ 135 degrees relative to the B-Y axis) whereas if switches 9 and 14 are operating in the incorrect phase successive bursts received by phase comparator 11 are in antiphase (-135 degrees, + 45 degrees); in the latter situation phase comparator 11 provides a signal which alternates at half line frequency which signal passes through a half line frequency selective circuit 17 to a rectifier circuit 18 which provides a signal either to reset multivibrator 8 or to change a change-over switch connected to the output of multivibrator 8 to invert the control signal supplied to switches 9 and 14. The output of phase comparator 11 controls subcarrier regenerator 12 to supply a signal in phase with the bursts received by phase comparator 11, which is supplied via a 135 degree phase delay 13 to B-Y demodulator 3 and PAL-switch 14.
Patent GB-1059449-A (GB)
Title: A process for the manufacture of a pesticide by the chlorination of a sulphur-contaning gasoline
IPC: C07C17/10
Filed: 1963-12-04
Abstract: Gasoline obtained from the gasification of sulphuraceous coal is converted to a product suitable for use as a pesticide by chlorinating the gasoline in the presence of a chlorine-saturated aqueous solution of an alkali, such as caustic soda, at a temperature not exceeding 25 DEG  C. till the specific gravity of the partly chlorinated product rises to 1.1 to 1.3, separating the partly chlorinated product from the aqueous phase and continuing the chlorination of the partly chlorinated product in the presence of a fresh, chlorine-saturated aqueous solution of an alkali or in the presence of an anhydrous metallic halide or of a chlorine-saturated aqueous solution of a metallic halide at a temperature not exceeding 35 DEG  C. till the specific gravity of the chlorinated product further rises to 1.4-1.5.ALSO:Pesticidal compositions comprise a carrier and a product obtained by chlorinating gasoline obtained from the gasification of sulphuraceous coal in the presence of a chlorine-saturated aqueous solution of an alkali at a temperature not exceeding 25 DEG C. till the specific gravity of the partly chlorinated product rises to 1.1 to 1.3, separating the partly chlorinated product from the aqueous phase, and continuing the chlorination of the partly chlorinated product in the presence of a fresh, chlorine-saturated aqueous solution of an alkali or in the presence of an anhydrous metallic halide or of a chlorine-saturated aqueous solution of a metallic halide, at a temperature not exceeding 35 DEG C. till the specific gravity of the chlorinated product further rises to 1.4-1.5.
Patent GB-1201616-A (GB)
Title: Improvements in or relating to drinking bowl for cattle and other animals
Inventor: CRITCHLEY ARTHUR WILLIAM
IPC: A01K7/06
Filed: 1966-10-26
Abstract: 1,201,616. Cattle drinking apparatus. A. W. CRITCHLEY. 25 Oct., 1967, No. 48127/66. Heading A1M. An apparatus for watering cattle or other animals comprises a row of drinking bowls 1, each bowl having a lid 2 which is hinged to the bowl at or adjacent to the rear 3 of the latter and has a projecting lip 4 extending at least around the front portion of the lid so that the animal may lift the lid with its nose. Bowls 1 are supplied with water via a valve 8, which is activated by the animal's nose pressing on the lever 9, from the main supply pipe 6. The lids are so coupled to a shaft 16 via a member 12 and arm 14 so that they may be individually opened by the animals or opened together by operation of a lever at the end of shaft 16.
Patent GB-1526729-A (GB)
Title: Ammonia treatment of textile materials
IPC: D06M11/60
Filed: 1974-11-07
Abstract: 1526729 Treating with liquid ammonia J & P COATS Ltd 31 Oct 1975 [7 Nov 1974] 48129/74 Heading DIP Water is applied to a cellulosic textile material prior to its impregnation with liquid ammonia, to increase the moisture content of the textile above ambient humidity levels but not above 30% by weight of the dry material. The material may be cotton, and may be in the form of yarn, thread, woven or knitted material or non-woven web.
Patent GB-1338266-A (GB)
Title: Derivative of 3,4-dihydroxyphenylalanine
Filed: 1971-10-15
Abstract: 1338266 3,4-Dihydroxyphenylalanine hemihydrochloride AJINOMOTO CO Inc 15 Oct 1971 [15 Oct 1970 31 Oct 1970 28 Dec 1970 30 Dec 1970] 48170/71 Heading C2C Novel 3,4 - dihydroxyphenylalanine hemihydrochloride in its DL-, L- and D-forms are prepared by preparing a supersaturated solution of the molecules in the correct proportions and allowing to crystallize. The D- and L-forms may also be crystallized from a supersaturated solution of the racemic form by seeding. The novel compounds may be used in a resolution process for obtaining D- or L-3, 4-dihydroxyphenylalanine and L- or D-3,4 dihydroxyphenylalanine hemihydrochloride which comprises preparing a solution of D, L-dopa and D, L-dopa ¢HCl supersaturated with respect to one of the compounds and seeding with seed crystals of one optically active enantiomorph of said first compound to form a first crop of crystals, then making the residual solution supersaturated with respect to the opposite enantiomorph of the other compound and seeding with seed crystals of said opposite enantiomorph of the other compound to form a second crop of crystals.
Patent GB-1077299-A (GB)
Title: Methine dyes
Inventor: DEPOORTER HENRI
IPC: C07D235/06
Filed: 1964-11-27
Abstract: The invention relates to merocyanine dyes of the formula <FORM:1077299/C4-C5/1> wherein R1 and R2 are hydrogen or halogen e.g. chlorine, R3 is an alkyl radical, n is 1 or 2 and z represents the atoms necessary to complete a heterocyclic nucleus containing 5 or 6 atoms in the heterocyclic ring, e.g. a thiazoline, 1 - ethyl - 5,6 - dichloro - benzimidazole, 1-ethyl - 5 - cyano - benzimidazole or pyrroline nucleus.  In the examples dyes are prepared by reacting 4-oxo-3,4-dihydro-1H-1,4-thiazino [4,3-a]benzimidazole or the 7,8-dichloro derivative thereof with the appropriate 2-b -acetanilido or b -p-toluenesulphonalido substituted quaternary salt.ALSO:7,8 - Dichloro - 4 - oxo - 3,4 - dihydro - 1H-1,4 - thiazino - [4,3-a], benzimidazole is prepared by forming (5,6-dichloro-2-benzimidazolyl)-methane thiol by reacting 4,5-dichloro-o-phenylene diamine with thioglycollic acid in acid medium, reacting the product in alkali with chloracetic acid to give (5,6-dichloro-2-benzimidazolyl)-methyl thioacetic acid and cyclizing the latter produce in acetic anhydride.
Patent GB-1335116-A (GB)
Title: Process for the manufacture of a framework member of a horological  device
IPC: G04B29/02
Filed: 1971-10-18
Abstract: 1335116 Clocks and watches EBAUCHES ELECTRONIQUES S A 18 Oct 1971 [11 Dec 1970] 48321/71 Heading G3T [Also in Division B5] A framework member for a horological device is injection moulded from a synthetic material reinforced with glass-fibres or balls, leaving holes (2) at the points which are to receive bearings (3), and the insides of the holes are injection moulded with a synthetic bearing material having a low coefficient of friction. The framework (1) may be of polyphenyl resin and the bearing (3) of acetal resin.
Patent GB-1466708-A (GB)
Title: Electrolytic colouring of anodised aluminium articles
IPC: C25D11/22
Filed: 1974-11-08
Abstract: 1466708 Electrolytically colouring anodized aluminium SWISS ALUMINIUM Ltd 8 Nov 1974 [9 Nov 1973] 48443/74 Heading C7B Pre-anodized Al or Al alloy is coloured electrolytically using A.C. in an aqueous acidic bath containing at least one colour forming metallic salt and to which an amino-alcohol has been added. The metal salt may be of Ni, Co, Cu, Sn, Ag and/or Fe and the additive one or more of mono-, di- or triethanolamine. The latter may be added in amount at least 1 gpl before or during colouration to prevent a pH drop. In examples the pH of a Cu/Co/Ni sulphate bath containing H 3 BO 3  is controlled to 4À7, and the pH of a Sn/H 2 SO 4  bath is controlled to 1À4.
Patent GB-1281917-A (GB)
Title: System for controlling and stabilizing the value of a resistance from a remote point
IPC: G05F1/63
Filed: 1969-10-02
Abstract: 1281917 Self balancing bridges using photoresistors SINGER CO 2 Oct 1969 [7 Oct 1968] 48525/69 Headings G1A and G1U A self-balancing bridge arrangement includes a Wheatstone bridge 16 having a photo-sensitive resistor 10 in one arm, an adjustable resistor 19 in a second arm and two matched ratio resistors 17, 18 forming the other two arms. The output of the bridge at points 25, 26 is amplified at 29 and used to energize lamp 31 so that its intensity is varied in order to change the resistance of photoresistor 10 in a way to rebalance the bridge. The actual value of the resistance of photo-resistor 10 when used to load a parallel tuned circuit 13, 14 is altered from a remote position by adjusting the value of resistor 19 which has a manual control knob. Once the value of resistor 10 equals that of variable resistor 19 the circuit will remain active to compensate for changes in ambient temperature. Amplifier 29 comprises a normal differential amplifier using transistors with an output stage connected as a Darlington pair, Fig.2 (not shown).
Patent GB-1307194-A (GB)
Title: Workpiece clamping device
IPC: B25B1/02
Filed: 1971-10-19
Abstract: 1307194 Vices G H ROHM 19 Oct 1971 [20 Oct 1970] 48568/71 Heading B3B A workpiece clamping or carrying device comprises a base-plate 3 having in cross-section two spaced leg portions 7, 8, a slide 1 mounted on the leg portions for relative sliding movement longitudinally thereof, a spindle 2 and spindle nut 5 for effecting the sliding, the inner facing surfaces of the leg portions including mutually facing guide grooves 11 receiving guide portions 12 of the spindle nut, and a pin 14 disposed in a bore 6 in the base-plate and biased, by a spring 13, toward a position in which it engages in a recess formed in one of said guide portions to prevent relative movement between the slide and base-plate. The pin slides in a bush 19 and has a transverse shaft 24 that engages in slots 25 in the bush to limit movement of the pin. A handle portion 26 enables the pin to be disengaged. The bush is locked by screw 23.