baber/WOPTO huggingface dataset:
Patent GB-1426514-A (GB)
Title: Basic esters and process for the preparation thereof
IPC: C07D307/68
Filed: 1973-04-27
Abstract: 1426514 Basic esters CHINOIN GYOGYSZER ES VEGYESZETI TERMEKEK GYARA RT 27 April 1973 [28 April 1972] 20233/73 Heading C2C The invention comprises basic esters of the formula and their pharmaceutically acceptable acid salts wherein Ac stands for a benzoyl group substituted by at least two substituents selected from halogen atoms, C 1  to C 6  alkyl or alkoxy, hydroxy, nitro and/or sulphamyl groups; or a phenyl-acetyl, #-phenyl-propionyl or γ-phenylbutyryl group which may be optionally substituted by one or more substituents selected from halogen atoms, C 1  to C 6  alkyl or alkoxy, hydroxy, nitro and/or sulphamyl groups; or the acid radical of a heterocyclic carboxylic acid, which contains at least one nitrogen, oxygen and/or sulphur hetero atom and may be optionally substituted; n is 2 to 4; A is hydrogen or a C 1  to C 6  alkyl group; B is a C 1  to C 6  alkyl group or a phenyl or benzyl group, whereby the phenyl ring of the two latter groups may be optionally substituted by one or more alkoxy and/or hydroxy groups; or A and B together with the carbon atom they are attached to, may form a cycloalkyl ring having 3 to 7 carbon atoms; with the proviso that if A stands for a methyl group, B cannot represent a benzyl, and salts thereof. The compounds of the invention may be prepared by the following processes: (a) reacting a compound of formula wherein X stands for a hydroxyl or halogen with an amino alcohol of Formula III or a salt thereof; (b) for the preparation of compounds in which n is 2 or 3 re-arranging an acid amide of formula in acidic medium or reacting an #-halogeno or sulphonyloxy ester of the formula wherein Y is halogen or sulphonyloxy with an amine of formula (c) reacting a compound of formula with an amine alcohol of the Formula III or a salt thereof; (d) removing from a tertiary amino alcohol ester of formula wherein Q represents a hydrogenolysable radical by means of hydrogenolysis; (e) saturating in a compound of the formula the azomethine bond; (f) alkylating a primary amino alcohol ester of formula or a salt thereof with a compound of formula where Y stands for halogen or sulphonyloxy; (g) reacting a salt of formula wherein Me is a metal atom with an amine of formula and if desired converting the compound into a pharmaceutically acceptable acid salt or setting free the same from its salt. The compounds are used in pharmaceutical compositions.
Patent GB-1145876-A (GB)
Title: Method of electrochemically etching silicon
IPC: H01L21/3063
Filed: 1966-05-06
Abstract: 1,145,876. Electrolytic etching of silicon. COMPAGNIE GENERALE D'ELECTRICITE. May 6, 1966 [May 7, 1965], No.20292/66. Heading C7B. Silicon is etched electrolytically by anodic action in a non-aqueous solution in an organic liquid containing bromine, chlorine or iodine or an inorganic bromide, chloride or iodide. The organic liquid may be an alcohol e. g. methanol or an amide e. g. N-methylacetamide and as examples of halides there are specified TiCl 4  and SiCl 4 . In a specific example the bath comprises a methanol solution of bromine and TiCl 4  . An inert metal cathode, e.g. of Pt, Rh or Ir may be used.
Patent GB-1456625-A (GB)
Title: Accessory drives
IPC: F16N11/00
Filed: 1975-05-14
Abstract: 1456625 Seals; shafts GENERAL MOTORS CORP 14 May 1975 [9 Sept 1974] 20303/75 Headings F2B and F2U Grease-retaining pockets are formed at the ends of a hollow gear-box shaft 7 by elastomeric plugs 38, which are snapped into place. The plugs, which may be of fluorocarbon rubber are seated on ribs 36 and have air escape holes 44, so that they are not dislodged by air pressure when the externally splined ends 31, 34 of solid shafts 30 and 32 of an alternator (8) and starter (10) respectively, are inserted into the internally splined ends of shaft 7. The accessory drive gear-box 6 is suspended below an aircraft gas turbine engine (2, Fig. 1, not shown) with which it is supplied and the alternator (8) and starter (10) are subsequently bolted to the gearbox.
Patent GB-702052-A (GB)
Title: Process for the production of coarse concrete and articles made therefrom
IPC: B28B1/08
Filed: 1950-08-17
Abstract: 702,052. Reinforced concrete. DEGEN, W. Aug. 17, 1950 [Aug. 20, 1949 ; Nov. 28, 1949 ; Feb. 21, 1950], No. 20425/50. Class 20 (4). [Also in Group V] A reinforced concrete beam contains large sized stone aggregate of a diameter more than ten times that of the concrete admixtures. Fig. 4 shows such a beam still in its casing 23, 24. Tie bolts 27, 28 are attached, fresh concrete laid and vibrated. A layer of stones 30 is placed on top and sinks to the bottom by pressure and shaking applied by a device 29.
Patent GB-1192909-A (GB)
Title: Thin Layer Apparatus
Inventor: SINGER WALTER
IPC: B01D3/00
Filed: 1969-04-22
Abstract: 1,192,909. Thin layer polymerization apparatus; roller mixing apparatus. CHEMIEFASERKOMBINAT WILHELM - PIECK - STADT GUBEN, VEB. 22 April, 1969, No. 20479/69. Headings B1B, B1C and B1X. Thin-layer apparatus for the continuous carrying out of chemical processes in thin layers comprises a reaction chamber closed on all sides, two horizontally-mounted mutuallymeshing rotatable toothed rollers 2, a heating jacket 4, an exhaust conduit 5 for the removal of gases and vapours, and a system of holes or slots provided vertically above the line of contact of the two toothed rollers. Reaction mixture supplied through nozzle 7 travels down channel 11 onto the teeth of rotating rollers 2 and after being sheaved off by the teeth leaves via conduit 9. Vapours may be drawn off via 5 under vacuum. Several apparatus may be used in series with rollers of greater diameter and smaller tooths height on the downstream ride. The speeds of the rollers is variably adjustable. The apparatus may be used for the transesterification of dimethyl terephthalate or the esterification of terephtlialic acid with ethylene glycol, and subsequent polycondensation to form polyethylene terephthalate, or for the demonomerisation of polyamides.
Patent GB-243451-A (GB)
Title: Improvements in or relating to internal-combustion engines
IPC: F02B25/00
Filed: 1924-08-30
Abstract: 243,451. White, J., and Wall, A. W. Aug. 30, 1924. Cylinders, ports and passages of and cooling; pumps; twostroke engines.-The exhaust ports g and inlet ports c are arranged around t h e cylinder so as to overlap in either a transverse or a longitudinal direction only or not at all, and a continuous blanket of air is directed past the exhaust openings. As shown, this blanket is formed by a current of air supplied through a pipe e by a rotary blower and directed by a sleeve m; this current acts as an ejector on the burnt gases and, after these have been withdrawn from the cylinder, some of the air enters by the same ports and forms part of the eharge. The cylinder has a flange d which retains a ring e having a series of notches giving communication between the ports c and transfer passages f from the crank-chambers, and between ports g and corresponding slots in the flange d. Combustible mixture is compressed in the crank chamber.
Patent GB-399631-A (GB)
Title: Improvements in or relating to the making of a record of vibrations which is reproducible by optical means
IPC: G11B11/00
Filed: 1932-07-21
Abstract: 399,631. Recording and reproducing sound. MILLER, J. A., 4627, 19th Street, Flushing, New York, U.S.A. July 21, 1932, No.20611. [Class 40 (ii).] A record of sound or like vibrations, suitable for optical reproduction, is made by a method which consists in recording separately on a carrier, by photographic printing or by means of two mechanical recording devices, the positive halves and the negative halves of the vibration cycles. By this means, a film may be obtained in which the parts corresponding to the vibrations are transparent, whilst the remaining area is opaque on both tracks, so that " surface noise " in reproduction is minimized. Fig. 6 shows a portion of a record made in accordance with the invention, the transparent parts 5 representing, for example, positive half-cycles of sound vibrations, and the parts 6 the corresponding negative halfcycles. The record may be obtained by first producing an ordinary variable width photographic record F<1>, Fig. 1. The two halves of this record, on either side 'of a longitudinal central line, are then printed separately, the right half being directly printed on to the film F2, shown in Fig. 6, to produce the transparent parts 6, and the left half being printed on to another film from which a print is made on to the film F2, to produce, in appropriate relationship to the parts 6, the transparent parts 5. The two half-cycle series 5, 6 may be printed on to separate films instead of a single film F2. A mechanically-produced record in accordance with the invention may be produced by using two electrically-operated cutting devices 9, 10 arranged as shown in Fig. 8, the devices being connected oppositely to the output wires 11 of an amplifier fed from the vibratory energy. Each cutter or stylus may be of the form shown at 14 in Fig. 9, the cutting edges 19, 20 being preferably set at an angle of about 174‹. The film consists of a, transparent base 15, a relatively soft layer 16, and an opaque layer 17. Each cutter is so disposed that when at rest its point nearly touches the layer 16, and as it vibrates, it cuts away parts of the layer 17. Alternatively, a film may be used consisting of a transparent base made, for example, of the substance known under the- Trade Mark " Cellophane," coated with wax or the like. After recording, the cut-out portions are made opaque, e.g. by spraying with ink. The wax is then removed and a positive print is made. An example of the shape of the cut out portions is shown at 18 in Fig. 10, which represents a half-cycle record track, i.e. that produced by one only of the pair of cutters. The styli may be so formed as to produce circular cut-out portions. Fig. 12 shows a, system for reproducing sound from a doubletrack record made according to the invention The apparatus comprises two light-sensitivecells 26, 27, one disposed adjacent to each track 21, 22, the cells being connected in push-pull arrangement to two valves 28, 29 which operate a sound-reproducer in known manner.
Patent GB-835748-A (GB)
Title: Improvements in or relating to the production of a wall or walls formed of compositefoamed plastic material
IPC: F25D23/06
Filed: 1956-07-04
Abstract: 835,748. Moulding refrigerator cabinets &c. ELECTROLUX Ltd. July 4, 1956 [July 20, 1955], No. 20711/56. Class 87(2). [Also in Group XIII] The inner part 19 and the outer walls 20 of the mould are assembled, with studs 28, spaced on the inner surface of the walls, pointing inwards, Fig. 2. A thin preformed layer 11, e.g. of polyester resin, is fitted on the part 19. A core 26, provided with holes 25, is coated with expansible plastic material and then positioned, followed by the rear mould wall 22. A hood 23 is fitted over the rear mould wall and steam or other heat transfer medium is admitted, passing through holes 21 in the rear wall and through the holes 25. At the same time the mould is immersed in hot water. The plastic material expands to form a dense layer with channels where the studs 28 are, and is then cooled by placing the mould in cold water and introducing air to the interior. A flat rear layer is then moulded, with channels similar to those formed by the studs 28. The mould walls 20 are replaced by plates 29, Fig. 3, penetrated by holes which correspond with the channels 31 formed by the studs 28. Expansible plastic material is then introduced in the space confined by the high density outer layer of expanded material, which it preferably resembles in chemical composition. The moulded flat rear layer 33 is then fitted and the rear and all four sides of the mould are surrounded by a hood 34 having suitable connections 35 for a heat transfer medium. When heating and cooling have been effected the low density inner material is completely expanded. In the process the inner material, outer layer and thin layer 11 become bonded together. The lower density inner material may be expanded in stages, using a perforated frame behind which a certain quantity is expanded to fill part of the interior, then moving the frame and expanding material in another part, and so on. This method lends itself to the introduction of a thin layer of material at one stage or another which is expanded to form a high density reinforcement. Thin plate reinforcements may also be provided by a suitably shaped core. Alternatively perforated tubes may be inserted in the hollow space and the heating or cooling medium introduced through them, and the holes left in the mould walls by these tubes may be used for drying out the expanded plastic material before they are plugged. The outer layer may be dense enough to take fastening members.
Patent GB-896469-A (GB)
Title: Improved pen for cattle
Inventor: GOLLEDGE CYRIL RIDLEY
IPC: A01K1/06
Filed: 1959-06-17
Abstract: 896,469. Cattle pens. SMITH OF BRISTOL Ltd., C. G. June 17, 1960 [June 17, 1959], No. 20725/59. Class 81 (2). A cattle pen in which an animal is treated or inspected is fixed in the ground and has at least three sides one of which is a gate, the unpivoted side of which is engageable with the adjacent side of the pen in one of a number of positions whereby the area enclosed by the pen may be varied. Opposite end frames A of the pen have legs 2 which are driven into the ground. One leg of each end frame pivotally supports a gate B. The free end of each gate has a latch 10 engageable with one of a number of notches in a ratchet bar 9 which extends across each end frame. In a modification a triangular enclosure is formed between one end frame, one gate and an existing gate, the end frame being arranged so that the existing gate is latched to vary the enclosure area.
Patent GB-499878-A (GB)
Title: Improvements in time bases for cathode ray tubes
IPC: H03K4/86
Filed: 1937-07-27
Abstract: 499,878. Valve generating circuits. MULLARD RADIO VALVE CO., Ltd., EAGLESFIELD, C. C., and ARCHER, J. July 27, 1937, Nos. 20772/37, 33869/37, and 8690/38. [Class 40 (v)] To produce sawtooth voltage an oscillatory circuit including both inductance and capacity is allowed to oscillate over the straight part of its curve, the operation being interrupted and recommenced at the desired sawtooth frequency the inductance having a second inductance magnetically coupled to it so that balanced voltages are produced. A gas-filled valve G, which is preferably argon or helium filled so that a discharge can be stopped by the application of negative bias to the grid, allows condenser C to charge when synchronizing pulses are received across R2. Some of the current through the valve also passes through inductance L so that, when valve G becomes nonconductive current is already flowing in the circuit LC and this circuit commences to oscillate. When the voltage reaches B, Fig. 2, however, the valve is again triggered and the condenser C is recharged to potential D, the cycle repeating so that sawtooth voltage as indicated by curve V1 is obtained. The current through the inductance L is substantially constant as indicated by curve I1 and comprises a large steady D.C. with a small varying component superimposed thereon. Inductance L1 is provided to limit the flow through the triode G and resistance R1 provides automatic bias on the valve to stop the discharge. Circuit R1, C1 determines the frequency of the sawtooth oscillations. To produce a balanced output, a second inductance is coupled to L or the inductance L may form one half of an autotransformer as shown in the drawing, parasitic oscillations due to the stray capacity of the secondary of the transformer being removed by shunting the secondary by condenser C3 and resistance R8, Fig. 7, or by winding the secondary with wire of high resistance. If the supply is D.C., a variable resistance R3 and decoupling condenser C2 is provided, adjustment of R3 varying the amplitude of the oscillations. Resistance R7 prevents adjustment of amplitude affecting the frequency. Resistance R9 and condenser C4 may be connected as shown to prevent self oscillation of inductance L<1>1. Values of the various components are given in the Specification.
Patent GB-972035-A (GB)
Title: Improvements relating to apparatus for contacting liquids
Inventor: GRAESSER NORMAN HUGO
IPC: B01F7/00
Filed: 1962-05-30
Abstract: <PICT:0972035/C1/1> An apparatus for contacting liquids comprises a rotor 4 with discs 5 and 6 mounted on the shaft by flanges 7 leaving a gap between them and the horizontal shell 1.  Bucket tubes 8 fit in the six slots in the discs such slots being the shape of the bucket or of a circular shape allowing liquids to pass as well as through other unfilled holes.  The direction of rotation is such that the longitudinal slots are in the leading side of the bucket tubes. The mode of operation and inlets &c. are not described, being similar to Specification 860,880.
Patent GB-1305007-A (GB)
IPC: C07D241/22
Filed: 1971-04-19
Abstract: 1305007 Sulpha - pyrazines CHINOIN GYOGYSZER - ES. VEGYESZETI TERMEKEK GYARA RT 19 April 1971 [30 Jan 1970] 20797/71 Heading C2C The invention comprises a process for making therapeutic 2 - (p-aminobenzenesulphonamido ) - 3-methoxy-pyrazine and salts thereof by reacting novel 2-(p-acetamidobenzenesulphonamido)-3- chloro-pyrazine (made by interacting 2,3-dichloropyrazine and p-acetamido-benzene-sulphonamide) with methanol containing an alkali metal hydroxide and if desired acidifying to produce the free compound.
Patent GB-1344197-A (GB)
Title: Thermosetting electrostatographic toner powders
IPC: G03G9/087
Filed: 1971-04-19
Abstract: 1344197 Toner composition XEROX CORP 19 April 1971 [4 Feb 1970] 21057/71 Heading G2H [Also in Division C3] An electrostatographic toner powder comprises a finely divided coloured resin, a substantial part of which is a solid free-flowing uncross-linked thermosetting polymer of diallyl phthalate or diallyl isophtalate or a mixture of such polymers. The thermosetting polymerpreferably forms at least 80% by wt. of the total resin. The thermosetting resins have preferred softening ranges which are 55-95‹ C for poly (diallyl isophthalate) and 80-150‹C for poly diallyl phthalate). The resin may include 1-20 wt. per cent of a thermoplastic resin modifier such as PVC polyethylene or polyvinyl butyral. The colouring may be imparted by 1-20 parts by wt. of a pigment and/or dye per 100 parts by wt. of resin and free radical cross-linking agent for the thermosetting resin may also be present . In the examples the particles are prepared by spray drying solution of diallyl (iso) phthalate prepolymers in which finely divided pigments are dispersed. In use, the particles are mixed with a carrier whose particles are shaped to roll across the image-bearing surface e.g. steel beads. When the image has been formed (e.g. on a photo-conductive insulating layer), the resulting image of particles may be transferred to a transfer member, which is then heated to effect cross-linking of the thermosetting polymer to provide a final copy. In the examples, the photoconductive image bearing layer is a flat selenium plate, and the final copy is on a paper substrate.
Patent GB-460241-A (GB)
Title: Improvements in and relating to the manufacture of thermoplastic resins
IPC: C08J3/00
Filed: 1935-07-24
Abstract: Rigid resinous masses of substantial thickness and of improved hardness are manufactured from thermoplastic products obtained by controlled polymerization from acrylic or alkylacrylic acids or their derivatives, (e.g. esters, nitriles or amides), or mixtures thereof, with or without modifying agents, (e.g. dyestuffs or plasticizers), by heating them to a temperature at least approximately as high as the boiling point of the monomeric substance, e.g. 95--115 DEG  C. in the case of polymerized methyl methacrylate, until no further substantial increase in the hardness or the softening point of the mass occurs.  The treatment is advantageously effected before removal of the mass from the mould, since a certain amount of shrinkage usually occurs, which facilitates the removal.  In an example, bubble-free methyl methacrylate polymer, is heated to 100 DEG  C. for 24 hours or more.
Patent GB-188396-A (GB)
Title: Improvements in method of and apparatus for vulcanizing pneumatic tubes and the like
IPC: B29D23/24
Filed: 1921-08-09
Abstract: 188,396. Fairchild, W. L. Aug. 9, 1921. Vulcanizing tyres.-Tyre-tubes and the like are placed in moulds 14 with their valves protruding and are supported on a bracket 9 carried by a truck 7. The bracket 9 is provided with hangers 10, 11 in which is mounted a manifold 12 with branches 13 adapted to connect with the valve stems of the tubes. Connection is made, the truck 7 is run into a chamber 1, and the manifold is connected with a pipe 20 for supplying heated gas to the interior of the tubes, and a pipe 28 with three valved branches 30, 31, 32 connected respectively with exhaust, pressure, and vacuum. The door 3 is secured and steam is admitted to the chamber 1 by pipes 23, 24, and to the interior of the tubes by the pipe 20. On completion of the vulcanization, the interior pressure is relieved through the pipe 30, and the tubes are put alternately under pressure and vacuum through the pipes 31, 32, to cause them to vibrate within the moulds to facilitate removal therefrom.
Patent GB-162974-A (GB)
Title: Shoe protectors
IPC: A43B3/16
Filed: 1920-07-14
Abstract: 162,974. Peters, O. W. July 14, 1920. Uppers, protectors for.-A removable heel protector, particularly applicable to fine shoes with Louis heels, comprises a casing 1 having an internal spring 6, an inset rubber cushion 15 retained in place by a flange 13 on the casing, and a hinged clamping member 39 which fits against the front of the heel. The clamping member is secured by wires 32 engaging slots 11 by being drawn down by a lever 30 pivoted at 29. A cam 31 on the lever presses up against a metal portion 41 and secures the entire casing when the lever 30 is brought into the vertical position.