baber/WOPTO huggingface dataset:
Patent GB-1475552-A (GB)
Title: Emulsion copolymers
IPC: C08L27/06
Filed: 1974-11-22
Abstract: 1475552 Vinyl halide polymer emulsion CIBA GEIGY AG 22 Nov 1974 [16 Jan 1974] 50712/74 Heading C3P An aqueous emulsion comprises an aqueous medium having colloidally suspended therein an emulsion copolymer of 35-96À5% by weight of the copolymer of units of vinyl halide or halides, 3-60% by weight of the copolymer of units of an ethylenically unsaturated monomer component (other than a vinyl halide) comprising at least one monomer selected from ethylene and monoethylenically unsaturated carboxylic acid esters containing a terminal saturated hydrocarbon group containing at least 2 carbon atoms, and 0À5-15% by weight of the copolymer of units of copolymerisable monomer component imparting thermosetting characteristics to the copolymer and comprising at least 0À5% by weight of an optionallly etherified N-methylol functional addition product of formaldehyde with an allyl or methallyl carbamate having the formula in which R 1  is hydrogen or methyl, R 2  is alkyl. ene (C 2 -C 4 ), and n is 0-10. The vinyl halide may be vinyl chloride. The ethylenically unsaturated monomer preferably consists of ethylene. The copolymerizable monomer component imparting thermosetting characteristics is preferably derived from allyl carbamate and has the formula The N.methylol groups of the addition product may be etherified with a C 1-8  alcohol. Further monomers may also be present such as acrylamide, methacrylamide, allyl alcohol, 2-hydroxy ethylacrylate or methacrylate, acrylic acid, methacrylic acid, crotonic acid, acrylonitrile, methyl methacrylate, styrene or vinyl acetate. In Example 1 a monomer emulsion containing vinyl chloride, acrylamide and N-methylol allyl carbamate is suspended in water together with either previously prepared seed polymer emulsion from these monomers or polyvinylchloride, sodium lauryl sulphate and the dioctyl ester of sodium sulphosuccinic acid, ferrous sulphate, maleic anhydride and sodium persulphate after which the reactor was pressurized with ethylene and heated to 50‹ C. Example 2 repeats Example 1 except that N-ethoxy methyl allyl carbamate is used.
Patent GB-1127906-A (GB)
Title: Communication switching systems
Inventor: WHITNEY WILEY
IPC: H04Q3/00
Filed: 1965-12-01
Abstract: 1,127,906. Automatic exchange systems. WESTERN ELECTRIC CO. Inc. 1 Dec., 1965 [2 Dec., 1964], No. 50912/65. Heading H4K. In an exchange system in which certain privileged subscribers are provided with more than one appearance on the switching network for purposes such as camp-on busy and triangular or conference calls, the additional appearances are provided by an auxiliary circuit which is attached to a privileged subscriber's normal appearance whenever he takes part in a call (originating or terminating). The circuit is exactly the same and operates in an identical manner to that disclosed in Specification 1,086,737, except that it is common to a plurality of privileged subscribers and is only "attached" to such a subscriber when he calls or is called. The switching network utilizes (No. 5) cross-bar switches as disclosed in U.S.A. Specification 2,585,904. Operation.-When a privileged subscriber e.g. S1 calls, the common marker 2 causes his normal appearance R to be connected via the network to the output appearance T of a free auxiliary circuit 4. One of the-in this case two -input appearances A or B of this circuit is then connected to an originating register 7 whereafter the call is completed in the usual way. Since appearances A, B are not permanently assigned to a subscriber, the marker seizes a memory 6 in order to enter therein the identity of the subscriber who is currently connected to the auxiliary appearances. The AMA equipment is supplied with this identity during the course of the call. If an incoming call for S1 on e.g. trunk 8 occurs, the marker consults a number group circuit 10 (effectively a directory number/equipment number translator) and on determining S1's class of service then interrogates the memory to see if he is already taking part in a call. Assuming that he is, the memory supplies the marker with the address of the (or an) other appearance of the auxiliary circuit whereafter the marker connects the trunk to this appearance with the subsequent effects already described in Specification 1,086,737. If S1 is not taking part in a call, the marker seizes an auxiliary circuit and connects the trunk to one of its input appearances and the subscriber S 1 to its output appearance. Ringing and answer then occur in the usual manner. The memory comprises a cross-bar switch whose inlets and outlets are connected to subscriber and auxiliary circuit appearances identifiers of the contact-tree type. Privileged subscribers may be provided with means (unspecified) for seizing an auxiliary circuit only if they actually require it.
Patent GB-1478779-A (GB)
Title: Reactive pigments and methods of producing the same
IPC: C09C1/42
Filed: 1975-12-12
Abstract: 1478779 Reactive pigment for use in pressure-sensitive record materials YARA ENG CORP 12 Dec 1975 [13 June 1975] 51022/75 Heading D2B [Also in Division C4] A reactive pigment suitable for use in a pressure-sensitive record material, which comprises (a) kaolinite, (b) bentonite (i.e. the unrefined rock from which montmorillonite, a swelling clay, is fractionated) or montmorillonite, (c) a salt of a polyvalent metal, and (d) a liquid capable of coupling with the salt, may be prepared by dispersing (a) and (b) in an aqueous medium, adding (c) to the resultant dispersion and dispersing it therein, adding (d) to the resulting dispersion and dispersing it therein, separating the solids, and drying and pulverizing the solids. The kaolinite may be a calcined kaolinite. The preferred ligand is 1, 6-hexanediamine and the preferred salt is CuCl 2 . Sheets are coated with a composition comprising water, sodium hexametaphosphate, the pigment and a latex.
Patent GB-1366874-A (GB)
Title: Welding flux
IPC: B23K35/362
Filed: 1970-10-28
Abstract: 1366874 Welding fluxes BRITISH OXYGEN CO Ltd 28 Oct 1971 [28 Oct 1970] 51240/70 Heading C7M A submerged-arc welding flux has the following composition: -  The deoxidants are preferably ferro-manganese and ferro-silicon, and the binder is preferably NaSiO 3  or KSiO 3 . The flux can be prepared by adding a dry mixture of the remaining components to a solution of NaSiO 3  or KSiO 3  and heating to remove the water. The manganese oxide is preferably Mn 3 O 4 , but MnO or Mn 2 O 3  may be used.
Patent GB-1513058-A (GB)
Title: Prop-and-shoe assemblies of self-advancing mine roof-supports
IPC: E21D23/04
Filed: 1975-12-16
Abstract: 1513058 Alignment of props HERMANN HEMSCHEIDT MASCHINENFABRIK 16 Dec 1975 [21 Dec 1974] 51476/75 Heading E1P A prop-and-shoe assembly comprises a hydraulic prop, having a bearing member 24 at one end which is supported on a pivot 28 on the shoe 16 and having a tubular portion 22 which slides over the bearing member 24, a chamber 30 within the prop to which hydraulic fluid may be admitted via a passage 32, an abutment 34 on the lower end of the prop, and a stop 36 on the shoe against which the abutment may be raised by supplying hydraulic fluid to the chamber 30 in order to align the prop relative to the shoe. The bearing 24 and pivot 28 are in the form of a ball and socket joint. A bellows type sock 38 protects the joint from dirt.
Patent GB-1423884-A (GB)
Title: Method of indicating the state of charge of electric acuumulators
IPC: H01M50/569
Filed: 1973-11-06
Abstract: 1423884 Measuring state of charge of batteries VARTA BATTERIE AG 6 Nov 1973 [6 Nov 1972] 51515/73 Heading H1B The state of charge is measured by determining the water vapour partial pressure in the gas space above the electrolyte space in the battery. The measuring member may be an hydrometer, the water vapour partial pressure being proportional to the electrolyte concentration and hence the charge state. Since the vapour pressure varies with temperature, the temperature is also measured and a correction applied to the vapour pressure value. In another method, the member comprises an ionexchange membrane which swells in correspondence with the concentration of the electrolyte vapour in the gas space. This latter method does not require temperature measurement.
Patent GB-1133563-A (GB)
Title: Improvements in and relating to balanced flue terminal
Inventor: MCCORMICK BARRY
IPC: F24C15/00
Filed: 1966-11-19
Abstract: 1,133,563. Balanced flue system. CALRAD Ltd. 19 Nov., 1966, No. 51886/66. Heading F4J. A balanced flue terminal comprises horizontal ducts 2, 4 connected to the flue outlet duct 1 and air inlet duet 6 respectively and communicating at each end with vertical open-ended passages 3. The flue outlet 1 of a stove may be connected directly into the upper of the two horizontal passages, a vertical duct 5 connecting the lower horizontal passage 4 to the air inlet 6 of the stove and being continued below it to form a condensation collector with a drainage outlet.
Patent GB-1466081-A (GB)
Title: Treatment of processed photographic silver image-bearing  hydrophilic colloid layers
IPC: G03C5/42
Filed: 1974-11-07
Abstract: 1466081 Increasing silver image density KODAK Ltd 7 Nov 1974 [8 Nov 1973] 51947/73 Heading G2X The density of a silver image prepared from a silver halide emulsion having a grain diameter of not more than 0À1 micron is increased by treating the image with an aqueous solution of 2-pyrrolidone or an N-substituted 2-pyrrolidone e.g. N-vinyl or N-methyl-2 pyrrolidone. The treatment time varies from 15 minutes to 4 hours.
Patent GB-1147296-A (GB)
Title: Current converting assemblies
IPC: H02M7/19
Filed: 1967-11-15
Abstract: 1,147,296. Thyristor circuits. WESTING- HOUSE ELECTRIC CORP. 15 Nov., 1967 [22 Nov., 1966], No. 51986/67. Heading H3T. ]Also in Division H2] A converter comprises a series arrangement of controlled rectifiers Sa . . . Sd each having an inductive device W1a . . . W1d in its anode circuit and shunted by a voltage divider; a breakdown device (such as a Shockley diode) D2a . . . D2d connected between a tapping in the voltage divider and the gate of each controlled rectifier, the gate of one of the controlled rectifiers being inductively coupled to the inductive device W1a of one other controlled rectifier. As described, the circuit is applicable to rectifiers or inverters; the first controlled rectifier Sa being triggered from a source G giving a pulse in the secondary windings W2a ... W2c of a saturable transformer Ta which triggers the breakdown diode D2b . . . D2d of each other rectifier, thus turning on the complete series chain. The inductive devices W1a . . . W1d minimize the rate of change of build-up of anode current and are damped by resistors such as R3a. Saturation occurs when the complete series chain has been turned on. In the event of overvoltage across any of the rectifiers, the appropriate breakdown diode will become conductive thus preventing "two terminal breakdown" of that rectifier. In Fig. 1 (not shown) the breakdown diode of each rectifier is connected to a secondary winding of a saturable transformer in series with the anode circuit of the preceding rectifier.
Patent GB-1481818-A (GB)
Title: Method for making an article of silicon nitride
IPC: F27B14/10
Filed: 1974-12-04
Abstract: 1481818 Production of composite silicon nitride bodies FORD MOTOR CO Ltd 4 Dec 1974 [20 Dec 1973] 52356/74 Heading C7D A Si 3 N 4  article having two zones of different densities is made by shaping Si powder to the required form, sintering in an inert atmosphere, coating at least part of the sintered Si with a slip of Si in a vehicle and then nitriding the coated article by heating in a N2 atmosphere. The initial Si article is preferably formed by injection moulding a mixture of Si powder and a thermoplastic binder, heating to remove the binder and then sintering at 1800-2150F in argon. Alternatively the Si shape may be formed by isostatic or direct pressing. The slip casting of the Si coating to a thickness of 2-3 mils is effected in a vacuum. The articles are used as thermocouple protection tubes, foundry crucibles, and gas turbines.
Patent GB-1425600-A (GB)
Title: Web winding machine
IPC: B65H19/22
Filed: 1973-11-13
Abstract: 1425600 Winding webs PROCTOR & SCHWARTZ Inc 13 Nov 1973 [17 Sept 1972] 52594/73 Heading B8R A web winding apparatus has a continuously driven batcher roller 12, forming a nip with a web core 24 to drive the latter for winding a web 18 thereon, the web being applied to the adhesively coated core 24 by a cutter 30 which is orbital about the surface 20 of the roller through one revolution to engage the web with pins 32 at a position remote from the nip, to cut the web during orbiting with an electrically heated wire 34 and to transfer the web to the core adjacent the nip. In operation a new core 24 is fed at the feeding station 23 into radial slots 22 of a pair of turret plates 16 disposed at the ends of the roller 12, the core engaging the web 18 at about 11 o'clock position and the roll winding starts at the 12 o'clock position at which the plates 16, which are indexable through 120 degrees, are stopped. On completion of winding the cutter 30, which is at a 3 o'clock position in its inoperative state, is driven at three times the speed of the plates 16 to complete one revolution during the plate indexing operation. Web rolls are discharged at about the 4 o'clock position.  The cutter 30 has a row of pins 32 which are mounted on a shaft (78, Fig. 4) rocked between a pin retracted and extended position by a stationary cam (60, Fig. 4).
Patent GB-1586258-A (GB)
Title: Agents having a residual action for combating animal ectoparasites
IPC: A61K9/70
Filed: 1977-12-19
Abstract: The composition for controlling ectoparasitic animals contains, besides an ectoparasiticidal or repellent active substance, an adhesive and a solvent or solvent mixture.
Patent GB-1280713-A (GB)
Title: Multiple ramp waveform generator
Inventor: PATRICKSON BRIAN ANTHONY
IPC: H03K4/56
Filed: 1969-10-28
Abstract: 1280713 Cathode-ray tube circuits ELLIOTT BROS (LONDON) Ltd 27 Oct 1970 [28 Oct 1969] 52745/69 Heading H4T A multiple ramp waveform generator comprises a pair of integrators 10, 20 (Fig. 1) the integrating rates of which are determined by analogue inputs from respective decoders 12, 22 and the outputs of which are fed to respective comparators 15, 25 together with peak amplitude determining analogue inputs from respective decoders 14, 24, the comparators alternatively producing outputs (when the predetermined peak amplitude of the ramps have been reached) which change the state of a bi-stable flip-flop 16, the outputs of which control the alternate operations of the integrators. Additionally, the output on line 23 is employed to advance the state of a three-state cyclic counter 30 the output of which is coded in 31...34 to provide binary coded inputs determining the slopes and peak amplitudes for the decoders 12, 14 and 22, 24 respectively. Fig. 3 shows the waveforms V11, V21 that may be produced on lines 11 and 21 (Fig. 1) during the three sub-periods C1, C2, C3 which occur during a full repetition period K 1  and Fig. 2 shows the circuitry of some of the elements of Fig. 1. The sequence of ramp waveforms may be employed for the display of line symbols on a cathode-ray tube.
Patent GB-1377867-A (GB)
Title: Heat storage receptacles
IPC: A47J39/02
Filed: 1973-07-17
Abstract: 1377867 Plate warmer C H BLACKBURN & CO Ltd (Imperial Arts Corp) 17 July 1973 [16 Nov 1972] 52997/72 Heading F4U A heat storage dish for warming a food plate comprises a hollow receptacle formed from upper and lower stainless steel plates 12, 11 secured together at their peripheries by welding or pressed beading. The centre portion 15 of the plate 11 locates a die cast alloy heat storage ring 16 supported on a fibre glass or other insulating pad 17. A lip 14 is formed on the plate 12 to locate a cover 18 and is provided with gaps to facilitate air circulation between stacked dishes in a warming cabinet.
Patent GB-1505050-A (GB)
Title: Process for the preparation of 1-carbamoyl-3-(3,5-dichlorophenyl)-hydantoins
IPC: C07D233/72
Filed: 1976-12-20
Abstract: 1505050 1 - Carbamoyl - 3 - (3,5 - dichlorophenyl)-hydantoins PHILAGRO 20 Dec 1976 [22 Dec 1975] 53157/76 Heading C2C 1 - Carbamoyl - 3 - (3,5 - dichlorophenyl). hydantoins of general formula wherein R is a C 1-4  straight or branched alkyl radical or a C 2-4  alkenyl radical are prepared by reacting 2 - [3 - (3,5 - dichlorophenyl) - ureido]- acetic acid with an isocyanate in an anhydrous inert organic solvent. Usually at least 3 moles of the isocyanate is used per mole of ureido-acetic acid. The solvent may be a chlorinated hydrocarbon such as CH 2 Cl 2 , C 2 H 4 Cl 2  or chlorobenzene, an aromatic hydrocarbon, an aldehyde or a ketone such as methyl isobutyl ketone or N-methylpyrrolidone. A tert-amine is also preferably present in an amount of 0À5-1À5 moles per mole of ureido acetic acid. The reaction temperature is preferably 20-110 C. In the examples 1- isopropyl- or 1-ethyl-carbamoyl-3-(3,5-dichlorophenyl)-hydantoins are prepared.
Patent GB-1371589-A (GB)
Title: Process for treating salt-containing acids
IPC: B01J49/00
Filed: 1972-11-17
Abstract: 1371589 Distilling acids R A OETKER [trading as CHEMISCHE FABRIK BUDENHEIM RUDOLF A OETKER] 17 Nov 1972 [22 Nov 1971] 53174/72 Heading B1B Acids such as phosphoric and sulphuric from industrial sources which are contaminated with salts are mixed with miscible organic solvents such as alcohols and ketones and azeotropes thereof to precipitate the salt. The separated acid may then optionally be further purified from cations with a strong exchanger and the acid is recovered by distillation.
Patent GB-1247706-A (GB)
Title: Process for forming a conductive layer upon an insulating substrate
IPC: H05K3/34
Filed: 1968-11-12
Abstract: 1,247,706. Assemblies for telecommunication. INTERNATIONAL BUSINESS MACHINES CORP. 12 Nov., 1968 [13 Nov., 1967], No. 53515/68. Heading H1R. [Also in Division C7] A printed circuit, which may have through holes, is formed on an insulating substrate of e.g. a polyester or polyimide, by cleaning the substrate, sensitizing, activating, printing a negative in an ester resin, then electrolessly depositing Cu or Ni, removing the ester resin e.g. by a solvent, and then heating the metal coating to a temperature 2/3 the softening temperature of the substrate. A further layer of e.g. Au or Cu is applied by e.g. electroplating or flow soldering.
Patent GB-1170056-A (GB)
Title: Improvements in or relating to Presses for Moulding Flat Articles from Powdered Material
IPC: B30B11/02
Filed: 1966-11-30
Abstract: 1,170,056. Compression moulding powders. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 30 Nov., 1966 [30 Nov., 1965], No. 53556/66. Heading B5A. In a press for moulding powder into thin annular plates, e.g. cores for store elements or thin plates of ceramic material for electrical capacitors, a spring 41, loaded slide 23 is reciprocated along the upper surface of a support 35, whereby a hopper 49 and a slide aperture 43 are brought into alignment with a mould cavity 34, whilst a recess 44 on the underside of the slide 23, is simultaneously moved out of contact with support 35 to discharge a moulded article, and the slide is then moved successively to place an upper stationary die 42, supported by a grub screw 48, over the cavity 33 for compression of the powder therein, and then for the moulded article to be ejected upwardly into the recess 44. A lower displaceable compression and ejection die 30 is mounted on a rod 25 urged downwardly by a spring 28 and provided with a lower pivot 11 for two levers 9, 10, which bear at one of their ends on respective vertically micro-adjustable stops (13, 14), Fig. 2 (not shown), and at the other of their ends may be engaged by respective cams 5, 6, on a shaft 4, for respective upward actuation of the die 30 to the compression and then to the article ejection position level with the upper surface of support 35; a core pin (36), Fig. 4 (not shown), is independently displaceable within die 30 via a horizontal yoke 40 connected to a rod 26 to the lower end of which a similar micro-adjustable lever 15 is pivotable and which is actuated against a spring 29 to a position level with the upper surface of support 35, after the cavity 34 is filled and before the slide 23 is displaced to the compression position, by a cam 7 mounted on the shaft 4 on which is also provided a cam 8 for actuation of the slide 23 via a lever 19. Only one of the levers 9, 10 is in contact with a respective cam at a given time and the lowermost position of die 30 during the mould filling is determined by a micro-adjustable stop (50) for rod 25; alternatively, an additional similar cam and lever device may determine the lowermost position of die 30. To prevent excess discharge of powder from the cavity 33 upon upward movement of the cores (36), the slide 23 may be displaced from the cavity filling position before the core 36 is moved and an additional similar cam and lever arrangement may be provided whereby die 30 is lowered before the core (36) is raised. In an alternative arrangement, the die 30 may be lowered, whereby the cavity is overfilled before returning die 30 to the correct position with filling aperture 43 remaining in position.
Patent GB-1283369-A (GB)
Title: Catalysts containing antimony oxide and process for their production
IPC: B01J23/16
Filed: 1969-10-31
Abstract: 1283369 Catalysts NITTO CHEMICAL INDUSTRY CO Ltd 31 Oct 1969 [2 Nov 1968] 53602/69 Addition to 1257489 Heading B1E An attrition resistant catalyst is prepared by forming a slurry containing a Sb(V) compound, a polyvalent metal compound and a silica sol with a pH of below 7 or so adjusting the pH of the slurry, subjecting the slurry to a temperature of 40-150‹C for at least 20 minutes, spray-drying the heat treated slurry to form substantially spherical particles, and calcining the particles at a temperature of 400-1100‹C. The catalyst prepared comprises the mixed oxides of Sb and the metal, which latter is preferably at least one of Fe, Co, Ni, Sn, U, Cr, Cu, Mn, Ti, V, Mo, W, Te, Bi, As, Th and Ce.
Patent GB-1342219-A (GB)
Title: Collision sensor for motor vehicle safety device
IPC: H01H35/14
Filed: 1972-11-21
Abstract: 1342219 Measuring speed and deceleration electrically NISSAN MOTOR CO Ltd 21 Nov 1972 [1 Feb 1972] 53678/72 Heading G1N [Also in Division H1] In a collision sensor for a motor vehicle safety device in which the deceleration at which a deceleration-sensitive switch is closed is varied with vehicle speed so as to prevent undesired actuation, the switch comprises an electromagnetic arrangement which is held open by a current related to the vehicle speed. As shown in Fig. 1 a speed sensor 11 provides an output whose frequency depends on wheel speed. This is fed to a frequency-to-voltage converter 12 Fig. 2 (not shown) producing an output V 1 . This feeds to a modulator 13 providing a signal V 2  which follows V 1  for increases and slow decreases in speed, but which decreases at a predetermined rate under rapid decreases of V 1  Fig. 5. The signal V 2  is supplied to a transistor circuit Fig. 6 or Fig. 7 (not shown) producing a current Ic inversely proportioned to V 2 , which is fed to the coil of a electromagnetic switch Fig. 8. The switch comprises a fixed contact 57 and a magnetic mass 58 which moves to abut contact 57 under deceleration and is biased to the "off" position by a permanent magnet 62 and an electromagnet 63 supplied with the current Ic.