baber/WOPTO huggingface dataset:
Patent GB-303998-A (GB)
Title: Improvements in the manufacture and production of olefines and diolefines
IPC: C07C5/333
Filed: 1927-12-14
Abstract: 303,998. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Dec. 14, 1927. Olefines and diolefines are 'obtained by catalytic treatment in a vaporous state of paraffins, olefines or mixtures thereof, which may be cyclic, at temperatures between 500-800‹ C., using as catalyst lustrous carbon (glanzkohle) which is deposited from hydrocarbons at temperatures above 650‹ C. It may advantageously be employed on carriers, such as difficultly reducible metal oxides and compounds thereof as employed in the process of Specification 297,398, such as glucinum oxide, tertiary calcium phosphate, and other bodies such as alumina, chromium oxide, active silica, natural or artificial silicates, quartz, porcelain or on metals, like copper, chromium, &c. Suitable starting materials comprise cyclohexane, tetrahydrobenzene, tetrahydronaphthalene, terpenes, naphthenes, Caucasian naphtha, crude mineral oils, conversion and cracking products thereof, products of hydrogenation of carbonaceous bodies, benzines, tars containing paraffins, or mixtures of the above. The process may be carried out at ordinary or reduced pressures, and preferably in the presence of diluents, comprising gases and vapours which do not react with the substances taking part at the temperature of reaction, such as water vapour, nitrogen, carbon dioxide, methane &c. Further treatment of the reaction product may consist in fractional distillation under pressure, according to Specification 302,203, [Class 8 (ii), Air and gases, Treating &c.].
Patent GB-367413-A (GB)
Title: Improvements in and relating to electric lamp holders
IPC: H01R33/46
Filed: 1930-11-11
Abstract: 367,413. Electric lamp holders. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A. -(Assignees of Allgemeine Elektricitats- Ges.; 2, Friedrich Karl-Ufer, Berlin.) Nov. 11, 1930, No. 33975. Convention date, Nov. 11, 1929. [Class 39 (ii).] For use on voltages higher than normal an electric lamp holder of the kind provided with a central contact has a body portion a of insulating material in the form of a cup with a recess in the inner side of its bottom portion to receive a separate member d of insulating material upon which the central contact f and its holding plate are secured by means of a rivet e passing through the plate and serving to attach the inset member d to the insulating body a. The upper end of the rivet e is formed as a terminal g. The outer contact h is attached to the bottom of the body a by hollow rivets, and an insulating cap b is secured to the body by screws passing through the rivets. The terminal n of the outer contact h is separated from the terminal g by an insulating bridge-piece o projecting above them.
Patent GB-1377829-A (GB)
Title: Process for the production of water-soluble polymers
IPC: C08F20/34
Filed: 1972-07-21
Abstract: 1377829 Photopolymerizing water-soluble monomers BADISCHE ANILIN- & SODAFABRIK AG 21 July 1972 [23 July 1971] 34185/72 Heading C3P  In a process for producing water-soluble polymers by photopolymerization of at least 50% aqueous solutions of monomers containing the CH 2 =C< group in the form of a film of thickness not greater than 2 cm. on a support, which is preferably movable relative to the radiation source, the aqueous monomer solution contains 0 to 80% acrylamide or methacrylamide, 20 to 100% compounds of formula CH 2 =CRCOY(CH 2 ) n N<SP>+</SP>R<SP>1</SP>R<SP>2</SP>R<SP>3</SP>X<SP>-</SP>, where R is H or methyl, R<SP>1</SP> and R<SP>2</SP> are C 1-3  alkyl, R<SP>3</SP> is H or C 1-3  alkyl, n is 1 to 4, Y is O or NH and X- is an acid radical, and 0 to 20% N-vinylimidazole, by weight of the total monomers. Specified monomer salts are the chloride, bisulphate, sulphate, phosphate, nitrate, methosulphate, acetate and oxalate of N,N-diethylaminoethyl and N,N-dimethylaminoethyl acrylates and methacrylates, dimethyl n-propyl acrylamide, dimethyl ethyl acrylamide and dimethyl ethyl methacrylamide. The products may be used as flocculants and in paper manufacture. Examples describe the polymerization of (5) methacryloxyethyl trimethyl ammonium chloride and the copolymerization of acrylamide with (1) diethylaminoethyl acrylate hydrochloride, (2) dimethylaminoethyl acrylamide hydrochloride, (3) dimethylaminoethyl methacrylate hydrochloride, (4) methacryloxyethyl trimethylammonium methylsulphate, (6) methacryloxyethyl trimethylammonium chloride and (8) diethylaminopropyl acrylamide hydrochloride, and of methacrylamide with (7) dimethylaminoethyl acrylate hydrochloride, in water in the presence of methylol benzoin methylether.
Patent GB-789193-A (GB)
Title: Improvements in or relating to bag closing machines
Inventor: SCHOFIELD HUBERT PERCIVAL
IPC: B65B31/06
Filed: 1955-11-30
Abstract: 789,193. Bag-closing machines. METAL BOX CO., Ltd. Aug. 31, 1956 [Nov. 30, 1955], No. 34348/55. Class 94(1). In apparatus for evacuating and heat-sealing bags, the mouths of the filled bags B are fitted to a suction chamber 7 on a support 1 which is then moved to the position shown to the right in Fig. 1. The bags are then clamped between compressible elements 17, 22, Fig. 4, and exhausted. The mouths of the bags are then heat sealed by heating elements 29, and after breaking the suction in chamber 7 and retraction of the heating elements 29 are removed from the support 1. The support 1 is mounted on an intermittently movable conveyer 2 and the suction chamber 7 slides against the action of springs 16 on vertical guide pins 6 which are secured to the support 1. The suction chamber 7 consists of two thin metal plates held apart by strips 9 and having their shorter edges 8, see Fig. 3, soldered or brazed together to form airtight joints. The opposite sides 10 of the suction chamber 7, preferably constituted by contiguous V-shaped teeth 13 as shown in Fig. 3 are open, and the strips 9 are arranged to prevent the edges 14 of the bags, Fig. 4, from being drawn into the chamber 7 when pressure therein is reduced. Secured to the support 1 is a compressible element 17 of foam rubber which is impervious to air and lies between the bars 18 to which are secured strips 19 of heat-resisting material. A plate 20 carried on stem members 21 has further compressible elements 22 attached to it, also made of foam rubber, and carries a trip rod 26. This operates a valve to evacuate the suction chamber 7 and the bags B through a nozzle 24, an air passage 23 and apertures 12 in the upper plate 11 of the chamber 7, when the plate 20 has reached the downward limit of its movement and is compressing the members 17, 22. When this occurs, heat sealing is effected by electrically heated bars 29. Thereafter, the heater element and the plate 20 are raised and the evacuated and heat sealed bags removed from the support 1. The apparatus can be modified by closing one of the sides of the suction chamber 7, in order to evacuate and seal only one bag at a time.
Patent GB-282453-A (GB)
Title: Improvements in or relating to the manufacture of new products primarily useful as pharmaceutical products
IPC: C07D215/40
Filed: 1927-12-19
Abstract: 282,453. I. G. Farbenindustrie Akt.- Ges. Dec. 20, 1926, [Convention date]. Addition to 267,169. Acridine, azine, di- and tri-arylmethane, oxazine, quinoline, thiazine, and xanthene derivations.-In the process of the parent Specification, according to which amino alkylamino compounds of the above types of compounds are prepared, the external nitrogen atom is introduced in heterocyclic combination, for example, in the from of piperidyl or pyrrolidyl; further the aliphatic connecting link between the nitrogen atoms may be replaced by a residue of hydroaromatic or heterocyclic nature; the ring system containing nitrogen and the connecting link may contain further substituents. According to examples : (1) N-(#-chlorethyl)-piperidine is condensed with 8-aminoquinoline; (2) 1- dimethylamino-2-bromcyclohexane is condensed with 6-methoxy-8-aminoquinoline; (3) 2: 2: 6: 6-tetramethyl-4-brom-N-methylpiperidine is condensed with 6-methoxy-8-aminoquinoline; (4) a thiazine is obtained by joint oxidation and condensation of N-methyl-piperidylethyl-aniline and p-aminodimethylaniline by the method described in example 1 of the parent Specification. N-Methyl-piperidylethyl-aniline is obtained by condensation N-(#-chlorethyl)-piperidine with methylaniline. 1-Dimethylamino-2-bromcyclohexane is obtained by heating 1-dimethylamino-2-cyclohexanol with hydrobromic acid. 2 : 2 : 6 : 6-Tetramethyl - 4 - brom - N - methylpiperidine is obtained by heating methyltriacetonealkamine with hydrobromic acid.
Patent GB-408391-A (GB)
Title: Improvements in heterodyne alternating current generators
IPC: H03B21/01
Filed: 1932-12-05
Abstract: 408,391. Valve circuits. RYALL, L. E., 52, Crescent Gardens, Eastcote, Middlesex. Dec. 5, 1932, No. 34395. [Class 40 (v).] In a heterodyne or beat-note signal generator in which the beat note is derived from a constant frequency-source and a variable frequency-source, losses at the higher beat-frequencies are compensated by adjusting the attenuation of a band-pass filter preceding the rectifier valve. As shown the output from the constant-frequency oscillator F1 is combined with that from the variable-frequency oscillator F2 in an amplifier 11. This amplifier comprises a circuit 14, 15 resonant to the mean carrier-frequency, a rejector circuit 16, 17 tuned to the second harmonic, a coupling-condenser 18, and a second circuit 19, 20 shunted by a resistance 21 in the input of the detector valve 22. The attenuation characteristic is adjusted to maintain the output voltage constant, as the heat-note rises, by varying the condenser 19. For low beat-note frequencies, a further voltage compensation is afforded by a resistance 30 and condenser 31 shunting the plate resistance 28 of the noteamplifier 29. Specification 297,507, [Class 40 (v)], is referred to.
Patent GB-826229-A (GB)
Title: Improvements in or relating to hydraulic actuating mechanism
Inventor: DICKINSON RONALD SIDNEY
IPC: F15B7/00
Filed: 1955-12-02
Abstract: 826,229. Window operating apparatus. ARMSTRONG PATENTS CO. Ltd. Nov. 27, 1956 [Dec. 2, 1955], No. 34508/55. Class 20(3) [Also in Group XXIX] A window W hinged along one edge is opened by a telemotor M (see Group XXIX), an arm 116 on the semirotary motor output shaft being linked to the window by a rod R.
Patent GB-386773-A (GB)
Title: Improvements in or relating to tanks or containers for water
IPC: E03B11/00
Filed: 1932-08-22
Abstract: A tank or cistern for domestic water-supply systems comprises an outer casing of wood, and a separate shell of vulcanized rubber or rubber composition inserted therein.  The rubber shell may be moulded, or formed by bending up and securing the side walls of a blank cut from sheet rubber.
Patent GB-960185-A (GB)
Title: Heterocyclic thiodiglycolesters
IPC: C08L27/00
Filed: 1962-09-10
Abstract: The invention comprises thiodiglycol di-[b -(9-carbazolyl) propionate] and N-b -hydroxy-ethyl-carbazolthiodipropionate. The former is made by heating 2 mols of 9-carbazolyl propionic acid with 1 mol of thiodiethyleneglycol and the latter by heating 2 mols of 9-hydroxyethylcarbazole with 1 mol of b , b 1-thio-dipropionic acid. Preferably the reactions are effected in the presence of an acid catalyst and a solvent which permits of the removal of water as an azeotrope. The products are stabilizers for crystalline polyolefines made in the presence of stereospecific catalysts (see Division C3). Examples are provided of the preparation of both compounds.ALSO:Crystalline olefine polymers, made by the use of stereospecific catalysts, are stabilized against heat, light and ageing by the addition of thiodiglycol di-[b -(9-carbazolyl) propionate] or N-b -hydroxyethylcarbazol-thiodipropionate. Preferably 0.02 to 2% by weight, of stabilizer is used.  Polypropylene is the preferred polyolefine. The stabilizers are especially useful when the polymers have been coloured with inorganic or organic pigments. Other stabilizers such as dialkylphenol sulphides, e.g. 4,41-thio-bis-6-tert, butylmetacresol, and aliphatic thiodiglycol esters, e.g. lauryl- and dodecyl-thiodiglycolate, may also be present.  Examples are provided of the use of the stabilizers in spun yarn from polypropylene. The preparation of the stabilizers is described in Division C2.
Patent GB-825252-A (GB)
Title: Reinforcing insert for a refractory brick
IPC: F23M5/06
Filed: 1957-11-06
Abstract: 825,252. Refractory bricks. HARBISONWALKER REFRACTORIES CO. Nov. 6, 1957 [Dec. 13, 1956], No. 34587/57. Classes 51 (1) and 51 (2). A reinforced basic refractory brick 1 for suspended roofs and walls of industrial furnaces has a U-shaped metal insert comprising a web 4 in a front face of the brick having an integral extension 8 bent to line a hanger recess 2 in said face, and flange plates 3 extending in and almost to the top of the brick, their upper sections being bent outwardly to avoid the recess. The flanges 3 also have an upper cut-out section 6 to clear the recess, and are formed with holes 7 through which the brick material extends to help anchor the inset. The web 4 has holes 10 engaging bosses on the magnetized upper die of the brick mould. When a two-part casing is applied to the brick, Fig. 6 (not shown), one side of the case is punched into the holes 10. The brick material comprises dead burnt magnesite, chrome ore and olivine or mixtures thereof, with or without the addition of alumina.
Patent GB-392847-A (GB)
Title: Improvements in or relating to therapeutic appliances for electrical treatment of the body
IPC: A61N1/04
Filed: 1932-12-06
Abstract: 392,847. Electrotherapeutic apparatus ; cupping-appliances. KELLNER, J., 47, Sokolska, Br³nn, Czecho- Slovakia. Dec. 6, 1932, No. 34589. Convention date, Dec. 14, 1931. [Class 81 (ii).] In electrotherapeutic apparatus comprising an exhaustible hollow member of rigid material adapted to enclose part of the body in an air-tight manner and containing or constituting an electrode, one or more additional electrodes are arranged in and insulated from said member so as to contact with the part under treatment. A hood 1 has a rubber sealing ring 2, a valve 3 or other closable air inlet, and a connection 4 for a hand bulb or other exhausting device. An electrode 5 is carried by a spring 6 and additional electrodes 7 by the ring 2. These latter may be of opposite polarity and the electrode 5 dispensed with. An external electrode in the form of a roller, plate, or disc may be provided. For treating a finger, a hood 1, Fig. 3, carries a hand-bulb 8 which fits within the former when not in use. Each valve 9 has an inlet closed by a rubber disc backed by a spring-pressed metal plate. A rubber ring 15 may, after exhaustion, be pushed on to the finger, to prevent the return flow of blood. The cylinder 1 may be of metal and itself serve as one electrode. A commutator may be arranged so that the electrodes can be connected alternately, or in different directions with the current source. Three electrodes 7, for example, may be 'connected permanently to a positive pole, and three others alternately connected to the negative pole by means of a rotary switch arm.
Patent GB-995738-A (GB)
Title: Improvements relating to pulse modulated radar equipment
IPC: G01S13/28
Filed: 1961-09-27
Abstract: 995,738. Pulse radar. COMPAGNIE FRANCAISE THOMSON-HOUSTON. Sept. 27, 1961 [Sept. 28, 1960], No. 34701/61. Heading H4D. In a pulse radar a short pulse applied to a tapped delay line 2 affords a pulse train for transmission and the received signal is fed to the delay line in reverse manner and the tapping outputs added in unit 3 whereby a relatively large amplitude composite pulse is produced. The received signals after demodulation are applied to a differentiator 13<SP>1</SP> the output from which triggers monostable multivibrator 13<SP>11</SP>. The delay line tappings from end O follow the rule: delay at nth tapping = nT 1  + (n - 1)T 2  where T 1  and T 2  are constants. The delay line may be magneto-strictive or composed of lumped elements.
Patent GB-212989-A (GB)
Title: Improvements in and relating to catamenial appliances, surgical pads and the like, and materials therefor
IPC: A61F13/15
Filed: 1922-12-20
Abstract: 212,989. Grant, J. C. Dec. 20, 1922. Catamenial appliances; bandages and dressings. - Commercial cellulose or cellulose tissue which is readily disintegratable in water is used in the manufacture of catamenial appliances, surgical pads, and the like, more particularly for making the covering and the means, if any, provided for fastening purposes. The fabric may be strengthened with material such as gum tragacanth or gum arabic which swells and dissolves in water.
Patent GB-1183016-A (GB)
Title: Brake Fluids
IPC: C10M/
Filed: 1968-07-22
Abstract: 1,183,016. Hydraulic brake fluid. FARBWERKE HOECHST A.G., and ALFRED TEVES G.m.b.H. 22 July, 1968 [20 July, 1967], No. 34760/68. Heading C5F. An hydraulic brake fluid comprises at least 20 parts by wt. of a lubricant proportion (defined as the residue of an evaporation test) and at most 80 parts by wt. of a solvent proportion comprising 10-75% by wt. of a liquid monoalkyl ether of #-hydroxy-#<SP>1</SP>-[2-hydroxy-propoxy]-diethyl ether having the general formula RO.CH 2 .CH 2 .OCH 2 .CH 2 .OCH 2 .CH(CH 3 )OH in which R is an alkyl radical, and 90-25% by wt. of a liquid monoalkyl ether of triethylene glycol having the formula in which R1 is an alkyl radical..The lubricant proportion may be a polyethylene glycol or an ether thereof, a polypropylene glycol or an ether thereof, a copolymer of ethylene oxide and propylene oxide or an ether thereof, a polyglycerol, an ester of a polyglycerol with ricinoleic acid, an ethoxylate of a polyglycerol or a mixture thereof.
Patent GB-175817-A (GB)
Title: A new or improved metallic rack or stand for use in workshops and for other purposes
IPC: A47B47/02
Filed: 1920-12-10
Abstract: 175,817. Whitfield, G. Dec. 10, 1920. Rack stands.-A metallic rack comprises one or more detachable shelves 1 supported by vertical corner tubes 2. Each shelf comprises a sheet of metal 1, the edges of which engage slots in bounding tubes 3, the extremities of which are united by chill cast bosses 4 having grooves 5 and screwed projections 7 to engage nuts 8. The surface of the groove 5 may be covered with rubber, leather, lead, &c. to provide a yielding surface.
Patent GB-1522821-A (GB)
Title: Electric windscreen wiper systems
IPC: B60S1/08
Filed: 1975-08-23
Abstract: 1522821 Automatic control of DC motors GENERAL MOTORS Ltd 6 Aug 1976 [23 Aug 1975 2 Oct 1975] 35072/75 and 40306/75 Heading H2L An electric windscreen wiper system comprises a circuit for effecting synchronization of three electric windscreen wiper motors, each of which drives a respective wiper arm and blade assembly, in which system the armature of each motor is arranged to generate, during each revolution thereof, the same sequence of similar electrical pulses, the three sequences of pulses being respectively fed to three similar binary counters to produce therefrom three sets of outputs, which are fed in pairs to inputs of respective similar binary comparators having outputs connected to a logic circuit, which controls switch circuits for the three motors so that, as long as all three motors run substantially in synchronism, all three motors remain switched on, but if the motors fall out of synchronism, the resulting differences in the rates of generation of the sequences of pulses causes the logic circuit to switch off the faster motor or motors until the synchronism of the motors is restored. In Fig. 1 three D.C. motors 1, 2, 3 are controlled by respective transistor switching circuits 60, 63, 65; 71, 74, 76 and 82, 85, 87 and are coupled to respective rotary members 16, 17, 18 each having apertures co-operating with a photoelectric system. Figs. 2 and 3 (not shown), whose output is applied to a Schmitt trigger, Fig. 4 (not shown) to produce sequences of pulses 22, 23, 26. These are applied to counters 20, 21, 24 whose sets of outputs are applied to comparators 27, 28 having outputs D, E, F; G, H, I applied to a logic circuit of OR and NAND gates interconnected as shown and having NAND gates 47, 50, 54 controlling the respective motor switching circuits. The circuit operation is analysed to explain how, when the motors fall out of synchronism, the faster motor or motors is/are switched off until it/they has/have slowed down sufficiently to restore synchronism. The logic circuit may comprise OR and AND gates, Fig. 5 (not shown) or may have an additional gate (114) controlling the switching circuit of motor 1 and receiving an output from a multi-vibrator (113). Fig. 6 (not shown), this multi-vibrator being controllable to a one or other condition, Fig. 7 (not shown) or to a range of conditions, Fig. 8 (not shown), whereby the motors may be driven either at an upper or lower speed or at any desired speed within an upper and lower range. Instead of using the rotary members 16, 17, 18, the motors may be of the three-brush type, each being modified so that only two brushes are used for the current supply, the third brush providing a signal for application to the counter 20, 21 or 24.
Patent GB-819645-A (GB)
Title: Improvements in and relating to methods of forming photographic layers and to photographic materials having such layers
IPC: G03C1/66
Filed: 1955-12-08
Abstract: Aqueous sols having a pH of from 4.5 to 11 and which give a thermoreversible gel on cooling comprise as principal ingredients copolymers composed to the extent of at least 60 per cent by weight of the product obtained or obtainable by the copolymerization of the monomers: CH2=CR-COOH and CH2=CR1-CN wherein R and R1 each represents a hydrogen atom, a halogen atom or a lower alkyl group, in a molecular ratio of the second to the first monomer within the range of 1.5:1 and 3:1.  Also present in the copolymers may be units derived from other monomers, e.g. acrylamide, vinyl acetate and styrene.  The copolymers may be prepared by copolymerizing the monomers in a liquid medium such as ethyl alcohol or, preferably, an aqueous medium having a pH of about 3 with the aid of a catalyst such as benzoyl peroxide, a mixture of potassium persulphate and sodium metabisulphite or a mixture of hydrogen peroxide and ferrous chloride.  In an Example (6) a copolymer of acrylic acid and acrylonitrile is prepared by a procedure in which the acrylonitrile is not added to the reaction until the acrylic acid has been polymerizing for 1 hour.  Alternatively, the copolymers may be prepared by the partial hydrolysis of polyacrylonitrile of polyacrylonitrile with aqueous caustic soda followed by precipitation in acid form by means of hydrochloric acid.  Aqueous sols are made by dissolving the copolymers in water with the aid of ammonia or caustic soda.  The sols may be used in the preparation of photographic layers for which purpose the copolymer may be replaced in part by gelatin or phthalyl gelatin.  Specification 649,544, [Group IV (b)], is referred to.