baber/WOPTO huggingface dataset:
Patent GB-1372568-A (GB)
Title: Synchronizing apparatus
IPC: G03G15/00
Filed: 1971-11-12
Abstract: 1372568 Automatic speed control XEROX CORP 12 Nov 1971 [16 Nov 1970] 52589/71 Heading G3R The movements of two members are phase synchronized by a feedback system which produces a control signal to vary the drive of one of the members. A device is included for selectively establishing a nominal ratio between the velocities of the members The arrangement shown in Fig.1, includes a phase comparator 13 which receives velocity indicating signals from sources 11, 12. The comparator 13 produces pulses whose duration indicates the phase difference between the input signals, and these pulses are integrated in a circuit 16 which may include a signal limiter, a low-pass filter, or a digital integrator. The switching of the integrator 16 and following capacitive store 17 is controlled by a logic circuit 22 comprising bi-stable multivibrators and coincidence gates, Fig.2 (not shown). The output from store 17 is combined in an amplifier circuit 18 with a nominal voltage set by a potentiometer (186), Fig.2 (not shown), to form a control voltage which determines the frequency of the supply fed from an oscillator 19 to a motor 21 which drives the member associated with the first signal source 11. In this way, the two members are phase synchronized by controlling the velocity of one of them. A monitoring circuit may be connected in parallel with the control voltage producing circuit 18 to provide a visual indication of the correction voltage required. If the correction required is consistently high, the nominal voltage supplied to the circuit 18 can be manually adjusted. The above described control system may be used in an electrostatic reproduction arrangement Fig.4. A film 411 is moved through a projector 404 by a capstan wheel 415 driven by a motor 418. A photo-cell 420 detects repeated frame indications and provides a first signal to the control circuits 400. The projector forms an image on an electro-photographic drum 405 associated with a cleaner 432, charger 433 and electroscopic developer 406. The image is transferred on to a paper web 421 which may have preprinted information on it which must correlate with the transferred image. The web is driven by an uncontrolled motor 427 and carries repeated indications which are sensed by a photo-cell 429 providing a second signal to the control circuits 400. The speed of the film 411 is thus adjusted to phase-synchronise its motion with that of the web 421.
Patent GB-1403527-A (GB)
Title: Data transmission systems
IPC: G06F11/08
Filed: 1971-11-12
Abstract: 1403527 Error checking arrangements PLESSEY CO Ltd 9 Nov 1972 [12 Nov 1971] 52624/71 Heading G4A During transmission of an address word from a CPU to a store, a check code is generated from the address word and subsequently the check code is compared with a check code generated from the address word as received at the store. The same checking procedure may be employed with data words as well as with the address words in a storage write operation. Specification 1,297,836 is referred to.
Patent GB-1283343-A (GB)
Title: Liquid fuel injection pumps
Inventor: CURRAN JOHN PATRICK STEWART
IPC: F02M59/26
Filed: 1968-11-08
Abstract: 1283343 Fuel injection pumps JOSEPH LUCAS (INDUSTRIES) Ltd 29 Oct 1969 [8 Nov 1968] 53035/68 Heading F1A In a fuel injection pump comprising a plunger 10 having a helical control groove 25 which cooperates with a spill port in the pump barrel to regulate delivery, the end of the control groove remote from the plunger head communicates with an axial groove 26 which is open to the pumping chamber. The other end of the groove 25 communicates with a recess 28 which is open to the pumping chamber via a smaller axial groove 29. This arrangement reduces the turning force on the plunger during spillage. The rate of spillage may be altered by varying the depth throughout the width of the control groove, and the delivery varied by rotation of the plunger in the barrel. Similar groove arrangements are provided on opposite sides of the plunger.
Patent GB-1513730-A (GB)
Title: Processing systems
IPC: G06F12/06
Filed: 1975-10-22
Abstract: 1513730 Data storage systems INTERNATIONAL COMPUTERS Ltd 22 Oct 1975 [11 Dec 1974] 53507/74 Heading G4A Two stores, one being of larger storage capacity and slower access time than the other, each comprise a plurality of units, one unit for each bit of a data item, and each unit comprises a plurality of separately addressable bit locations, corresponding units of the two stores being interconnected for data transfer and being physically closely spaced, e.g. on the same circuit board. The fast and slow access units may be formed in bipolar and MOS integrated circuit technology. The storage units may form the local store for the processing elements of an array processor, each applied address selecting a single bit from each pair of fast and slow access units, the particular unit in each pair being selected in dependence upon the range in which lies the address. The storage units in each pair may share the same address decoder or they may have separate decoders, exemplary arrangements and address allocations being illustrated in Figs. 3-5 (not shown). Simultaneous access to a large number of storage unit pairs, e.g. a row in the array processor, provides a wide path for data transfer and the juxtaposition of the fast and slow access units reduces the time required for transfer between the storage units. The most frequently required data may be maintained in the faster access storage units.
Patent GB-1466969-A (GB)
Title: Leucine isoleucine separation
IPC: C07B/
Filed: 1974-12-13
Abstract: 1466969 Separation of leucine and isoleucine NESTLE SA 13 Dec 1974 [21 Jan 1974] 53956/74 Heading C2C A process for separating leucine and isoleucine comprises forming an aqueous solution of the copper or nickel salts of these two amino acids, subjecting this solution to a series of at least two cycles of fractional crystallization, each cycle consisting of two crystallizations, the first at a pH of 2 to 3À8 and the second with adjustment of the solution to a higher pH up to a maximum of neutral, the starting solution for the second and any subsequent cycles being prepared by dispersing the crystals from the second crystallization of the previous cycle in water, and separating the amino acids leucine and isoleucine from the copper or nickel salts thereof produced by the fractional crystallizations. In a preferred feature the pH-value of a solution of leucine, isoleucine and copper sulphate is adjusted to between pH 1À0 and 1À8 and a first, clear blue-coloured solution is obtained, the pH-value of this first blue solution is adjusted to between pH 2 and 3, a first crystallized fraction consisting of copper leucinate is collected by filtration, the filtrate is neutralized and a second crystallized fraction consisting of copper leucinate and isoleucinate is collected by filtration, the second crystallized fraction is dispersed in water, the pH-value of the dispersion is adjusted to between pH 1À3 and 2À2 and a second, clear blue-coloured solution is obtained, the pH-value of this second, blue solution is adjusted to between pH 2À7 and 3À8, a third crystallized fraction consisting mostly of copper leucinate is collected by filtration, the filtrate is neutralized and a fourth crystallized fraction consisting mostly of copper isoleucinate is collected by filtration.
Patent GB-1115014-A (GB)
Title: Photographic material
IPC: C08F8/30
Filed: 1965-12-21
Abstract: A polymer containing repeating units having the formula <FORM:1115014/C3/1> in which R1 represents a carbon chain having up to 5 carbon atoms and substituted with up to 3 substituents of the formula -COXR2R3 in which X is -N < or <FORM:1115014/C3/2> where R4 is a hydrogen atom or an alkyl group having up to 5 carbon atoms and R2 and R3 are each a hydrogen atom, or an alkyl group containing up to 5 carbon atoms which may be substituted with alkoxy or hydroxyl groups, may be prepared by reacting poly(vinyl alcohol) with an ester of a mono or polybasic fatty acid having a terminal isocyanate group and thereafter hydrolysing the polymeric ester so formed and reacting the polymeric acid with an amine. Preferred polymers have repeating units of formula <FORM:1115014/C3/3> where "n" is an integer from 1 to 5.  Copolymers having repeating units of Formula I or II with units of Formula III <FORM:1115014/C3/4> where Y is a hydroxyl, an ester, an N-alkyl amide, an N,N-dialkyl amide group or a group -OCONH-R5-COOR6 where R5 and R6 are each carbon chains containing up to 5 carbon atoms, may be made.  In the examples the polymers formed contain varying amounts of alkanol amide carbamate, ester carbamate, carboxy carbamate and vinyl alcohol.  The polymers may be used in light-sensitive gelatin silver halide emulsions.
Patent GB-1120378-A (GB)
Title: Control circuit with high voltage starting means
IPC: H05B41/391
Filed: 1966-12-05
Abstract: 1,120,378. Control systems for gas discharge lamps. GENERAL ELECTRIC CO. 5 Dec., 1966 [4 Jan., 1966], No. 54282/66. Heading H2H. [Also in Division G3] A load 1, e.g. a gas discharge lamp, is supplied from an A.C. source 2 by way of back-to-back thyristors 7, 8 which receive firing pulses from circuitry 23, 33 operating as described in Application No. 18136/66, and also by way of a circuit which provides a high voltage starting pulse when the load is switched on the said circuit comprising a first capacitor 20 connected across the load 1, a step-up autotransformer 62, a further capacitor 60, a resistor 61 and a glow lamp 63 interconnected as shown. The arrangement is such that the capacitor 20 and a series impedance 6 form a resonant circuit producing an intermediate voltage higher than the A.C. supply voltage, and this intermediate voltage is applied across the elements 60-63 which produce at the load repetitive pulses of a voltage substantially higher than the said intermediate voltage for starting the load. The resistor 61 may be omitted from the circuit, and other suitable connecting arrangements for the elements 20, 60, 62 and 63 are described with reference to Figs. 2, 3 and 4 (not shown). The system may include photo-sensitive means responsive to supply voltage variations and ambient light conditions, means including a third capacitor for increasing the starting energy, means including a thermistor for disabling the operation of glow lamp 63 in the event of failure of the load, and means for producing during the load starting interval a load current different from the normal operating current.
Patent GB-1312278-A (GB)
Title: Pressure-sensitive copying material and a process for copying  therewith
IPC: B42D15/04
Filed: 1970-11-16
Abstract: 1312278 Pressure-sensitive copying material CIBA-GEIGY AG 16 Nov 1970 [14 Nov 1969] 54404/70 Heading D2B A pressure-sensitive sheet has an under layer of dark pigment, and a top layer of lightcoloured pigment which may be made transparent by the application of a liquid. The liquid, which preferably has the same refractive index as the light pigment, may be microencapsulated and mixed with the top layer or else deposited from a separate sheet. Preferred white pigments include barium sulphate, mica, kaolin, epoxy, phenoplast and aminoplast resins. The liquid is a solvent, either volatile, such as chloroform, or non-volatile, such as tricresyl phosphate. The transparency in the top layer may be fixed by using a liquid which is a stabilised monomer, such as styrene, or a resin. The base material may be paper, or be made from polyester, polyamide or acrylic fibres, or be a foil of cellulose, polymer or metal. Preferred pigment particle sizes, microcapsule sizes, and methods of preparation are described.
Patent GB-1418034-A (GB)
Title: Moulding process
IPC: B29C44/04
Filed: 1972-11-27
Abstract: 1418034 Injection moulding DEMAG KUNSTSTOFFTECHNIK GmbH 27 Nov 1972 [29 Nov 1971] 54619/72 Heading B5A In an injection moulding process using a plurality of injection units connected to a common valved nozzle the injection of one component is commenced before the injection of the preceding component has finished. The invention may be applied to the so-called "sandwich" moulding using a foamed or non-foamed core material.
Patent GB-1437470-A (GB)
Title: Process for separating a vinyl aromatic hydrocarbon from a hydrocarbon mixture containing the same
IPC: C07C15/46
Filed: 1973-11-23
Abstract: 1437470 Separation of vinyl aromatics from mixtures by extractive distillation SNAMPROGETTI SpA 23 Nov 1973 [29 Nov 1972] 54626/73 Heading C5E Vinyl aromatic hydrocarbons are separated from hydrocarbon mixtures comprising other aromatic hydrocarbons by extractive distillation using a solvent mixture comprising 1-30% by weight of water, and one or more polar solvents boiling above 150 C. and selected from aldomorpholines (e.g. N-formyl morpholine), ketomorpholines, sulpholane N-methyl pyrrolidone. A feed 1, e.g. a C 8  or C 6-8  cut produced from the steam cracking of naphtha, is extractively distilled at 9 using a solvent mixture 2 to produce an overhead 3, which is separated into a water stream 17 and a hydrocarbon stream 16, and an extract 4 comprising styrene, o-xylene and solvent mixture. The extract 4 is extractively distilled in a second column 10 to provide an overhead 6 which is enriched in oxylene and which is recycled to the column 9 and a bottoms 7. the bottoms 7 is stripped at 12 to provide a solvent stream 14 and an overhead which is separated into a styrene product 8, e.g. containing 99À8% styrene and an aqueous stream 18.
Patent GB-1212707-A (GB)
Title: Spiral-groove bearing member
IPC: F16C33/10
Filed: 1967-12-04
Abstract: 1,212,707. Bearings. PHILIPS' GLOEILAMPENFABRIEKEN N.V. 4 Dec., 1967 [7 Dec., 1966], No. 54973/67. Heading F2A. A hydrodynamic bearing element comprises a generally conical internal bearing surface 2 formed with at least three spiral grooves, each groove having a side wall 5 remote from the apex of said surface which makes an angle with the surface 2 of not greater than half the apical angle of the surface. In Fig. 1 the surface 2 is frusto-conical and the apex imaginary. The other side wall 6 may make an angle of 90 degrees with the surface 2.
Patent GB-1399910-A (GB)
Title: Process for the production of iron-containing titaniferous particles
IPC: C22B34/12
Filed: 1972-11-29
Abstract: 1399910 Upgrading Fe-containing Ti ores BRITISH TITAN Ltd 17 Oct 1973 [29 Nov 1972] 55049/72 Heading C1W Particles of iron-containing titanifereous ore are coated with a reducing agent to provide free-flowing coated particles of average size not more than 500Á, which are fed through a hot gaseous plasma forming an inert or reducing atmosphere, a material containing an increased proportion of titanium being recovered. Particles of non-containing titaniferous or ore coated with a reducing agent and having a particle size after coating of less than 500Á are claimed per se. The reducing agent may be carbonaceous, e.g. coke, graphite or soot, bound with an oil or pitch. The ore particles may be dried at 300- 400 C. during and/or after coating to ensure flowability, and conglomerates may be broken by milling and sieving. The amount of reducing agent may be such as to provide 0À5-2À0 times the stoichiometric needed for reduction of the Fe content to metal, reduction being completed, if necessary by a reducing plasma. Specified plasma gases are hydrogen, methane, propane, butane N 2  and argon. Other compounds, e.g. alkaline earth metal oxides and/or alkali metal halides may be included in the reductive coatings. After passage through the plasma, the product may be cooled to recover particulate Ti-concentrate containing metallic Fe (then to be acid-leached), or may be retained in the molten state. In this case, the product forms Fe-rich and Ti-rich layers separable by means of a weir over which Ti-rich molten slag flows into a second receptacle. The separated layers may be cooled and comminuted or the molten Ti-rich layer may be chlorinated. The molten Ti-rich layer may be subjected to controlled oxidation, e.g. by counter-current air or O 2  flow, to remove Fe, Si and/or Al as oxide fumes.
Patent GB-1377116-A (GB)
Title: Dampening devices for off-set printing machines
IPC: B41F7/26
Filed: 1972-11-30
Abstract: 1377116 Dampening POLYGRAPH LEIPZIG KOMBINAT FUR POLYGRAPHISCHE MASCHINEN UND AUSRUSTUNGEN VEB 30 Nov 1972 55331/72 Heading B6C A dampening device comprises a duetor roller 13 a rubbing roller 11 and dampening fluid applying rollers 9.1, 902 and a moving transfer roller 12 operable in two modes in the first as a messenger roller and in the second in contact with both the ductor and rubbing rollers in which the trnsition is made by raising the ductor roller as shown in dashed outline with or without raising the container 14 of dampening fluid. The ductor roller may have its speed and inclination relative to roller 12 varied. The second mode of operation is employed for running in and pre-dampening the printing machine inwhich the device is installed.
Patent GB-1332416-A (GB)
Title: System for producing transparencies
IPC: B41M5/124
Filed: 1971-12-01
Abstract: 1332416 Pressure-sensitive recording material NATIONAL CASH REGISTER CO 1 Dec 1971 [28 Dec 1970] 55694/71 Heading D2B A couplet of sheets for making transparencies comprises a flexible top sheet carrying microcapsules containing a solvent and a transparent polymeric bottom sheet soluble in the solvent, the arrangement beinfi such that when the microcapsules are ruptured in accordance with a pressure pattern, the, bottom sheet becomes opaque in the area of solvent release to delineate an image. The microcapsules, which may be distributed within the top sheet or coated on its undersurface, may be provided in only selected areas of the top sheet, and may include a dye or other indicating material in solution or dispersion. The transparent sheet can be coloured and provided with a removable support. The top sheet may be written or typed on to provide a master copy. Specified solvents include tetrachloroethylene, toluene, xylene, carbon tetrachloride, methyl ethyl ketone, acetone, benzene, chlorobenzene, nitrobenzene, cyclohexane, hexyl acetate, chloroform, dioxane, and methyl chloroform. Suitable polymeric materials for the transparent sheet include polystyrene, polyvinyl acetate, polyvinyl chloride, polyalkylmethacrylates, ethyl cellulose, nitrocellulose, cellulose acetate, cellulose propionate, cellulose acetate butyrate, and polycarbonates.
Patent GB-1307772-A (GB)
Title: Device for supporting building construction slabs
IPC: E01C3/00
Filed: 1970-11-24
Abstract: 1307772 Supporting floor slabs K SCHAUB 24 Nov 1970 [4 Dec 1969 10 July 1970] 55834/ 70 Heading E1B Floor slabs 6 forming, e.g. a terrace, balcony or promenade are supported a little way above a supporting surface by annular discs 1 arranged under the corners of the slabs in combination, if necessary, with spacing discs 9. Each disc 1 is preferably made of a synthetic material, is circular or polygonal, and has four upper radial ribs 2 and lower grooves 3 and 4. Each spacing disc 9 has a diametral upper groove 10.
Patent GB-1166298-A (GB)
Title: Novel Fluorine-containing Epoxides and Polymers Thereof
IPC: C07D303/22
Filed: 1966-12-13
Abstract: 1,166,298. Coated materials. ALLIED CHEMICAL CORP. 13 Dec., 1966 [13 Dec., 1965], No. 55840/66. Heading B2E. [Also in Divisions C2, C3 and C5] Water-repellent coatings for fabric, paper and other materials comprise polymers characterised by the presence of repeating units of the formula:- [RR<SP>1</SP>-CF-O-CF 2 -CXY-CH 2 -CH-CH 2 O-], wherein each of R and R<SP>1</SP> is a fluorine atom or a perhaloalkyl radical in which the halogen atoms are chlorine or fluorine and in which at least one fluorine atom is attached to each carbon atom, X is a fluorine, chlorine, bromine or hydrogen atom and Y is a fluorine or hydrogen atom. Specified solvents for the polymer are trifluoromethylbenzene and 1, 2-dichloroperfluorocyclohexene.
Patent GB-1412117-A (GB)
Title: Flotation apparatus
IPC: B03D1/24
Filed: 1972-12-04
Abstract: 1412117 Flotation apparatus ESCHER WYSS GmbH 4 Dec 1972 [9 Dec 1971] 55954/72 Heading B2H [Also in Division D2] A flotation apparatus for the purification of a suspension of fibrous material comprises a container for the suspension which has inlet and outlet apertures of opposite sides of the container and connected to inlet and outlet conduits for the suspension, a device for the gas treatment of the suspension in the container and a device for discharging a foam produced by the gas treatment at the surface of the suspension, wherein the gas treatment device includes a gas distributor arranged in the lower portion of the container and having a stationary wall provided with gas through flow apertures and forming a boundary wall for the suspension, these apertures. when viewed in plan, being arranged at least over a portion of the base area of the container and being so designed that the intensity of the gas treatment effected decreases in the direction from the inlet to the outlet side of the container. An apparatus of the above type as shown in the Figure and comprises a container 1 provided with inlet and outlet apertures 2 and 3. A suspension in this container is subjected to a gas treatment, gas being passed from conduit 26 through the apertured stationary wall 4. The apertures decrease in both size and frequency as the distance from the inlet aperture 2 towards the outlet aperture 3 increases. Foam generated by the gas treatment is removed by device 19 in the form of a paddle wheel or as shown in the lower apparatus, by a paddle belt 20. Several such apparatus may be stacked one or top of another and connected in series to form a flotation tower.
Patent GB-1129394-A (GB)
Title: Liquid resistor apparatus
IPC: H01C10/02
Filed: 1966-12-14
Abstract: 1,129,394. Variable liquid resistor. N. R. BEYRARD. 14 Dec., 1966 [14 Dec., 1965], No. 56039/66. Heading H1S. In a variable liquid resistor of the type in which the resistance varies according to the depth of the conducting liquid between the electrodes, the depth of this liquid is controlled by the pressure of the vapour produced by the current flowing through and heating it. The resistor has two chambers 1 and 2 (Fig. 1) interconnected by ducts 4, 5 and 6, and filled with a conducting liquid such as caustic potash solution. Electrodes 13b and 14b in the reservoir chamber 1 connect with a further pair 13c and 14c (Fig. 4) in the chamber 2 and their narrow projections 13d and 14d. The whole assembly is closed by a plate 15. Current flowing between electrodes 13c and 14c heats the liquid thus forming vapour which forces the level of the liquid down in chamber 2, the displaced liquid passing up through duct 4 into chamber 1. Thus the submerged area of electrodes in chamber 2 decreases and the resistance increases, a sudden step increase occurring when the level falls below the bottom edge of the main area of electrodes 13c and 14c, leaving only projections 13d and 14d submerged. The liquid level can drop to the level of the bottom of tube 4 after which the pressure of the vapour is such that it opens valve 7 and escapes through 11 to condense in the liquid of chamber 1, defining a maximum resistance value. Piston 9 working- in cylinder 10 forms a dashpot to show the valve movement, which, if required, can be controlled from outside the resistor by the use of an electromagnet (18), Fig. 10 (not shown). Duct 5 acts as a by-pass for excess vapour. The resistances of chamber 1 and chamber 2 are in parallel, and if chamber 1 is made without electrodes a fixed resistor is connected in circuit to simulate their effect. The complete device can be used as a starter resistor for an asynchronous motor or, in the case where the operation of valve 7 is controlled electromagnetically externally, as an amplifier. Apparatus for three-phase current is described.