baber/WOPTO huggingface dataset:
Patent GB-808178-A (GB)
Title: Process for the production of substituted piperazines
IPC: C07D295/023
Filed: 1955-10-18
Abstract: N : N1-disubstituted piperazines of the formula <FORM:0808178/IV (b)/1> wherein R is an alkyl or hydroxyalkyl radical preferably containing 1-4C, are prepared by heating a mixture of carbon dioxide and an aliphatic secondary ethanolamine of the formula HOC2H4 -NHR to a temperature of at least 110 DEG  C. and an absolute pressure of at least 150 pounds per square inch.  The temperature range is preferably 110 DEG  to 230 DEG  C. and the pressure range is preferably 150 to 1000 and more preferably 200 to 600 pounds per square inch absolute.  The pressure may be achieved by heating the reactants and by introducing a gas such as carbon dioxide or nitrogen.  The reaction may be conducted with or without a solvent, water and diethylene glycol being specified solvents.  Intermediate carbonate or carbamate salts may be prepared as a separate preliminary step by reacting the secondary ethanolamine and carbon dioxide at atmospheric pressure in presence or absence of water respectively.  The examples describe the preparation of N : N1-dimethylpiperazine, N : N1-diethylpiperazine, N : N1 - di - (2 - hydroxyethyl) piperazine, N : N1-dibutylpiperazine and the picrates thereof.
Patent GB-1396440-A (GB)
Title: Hydraulic steering limitation means for hydrostatic steering  installations more particularly for motor vehicles
IPC: B62D5/06
Filed: 1973-10-01
Abstract: 1396440 Steering articulated vehicles ZAHNRADFABRIK FRIEDRICHSHAFEN AG 1 Oct 1973 [6 Oct 1972] 29670/74 Divided out of 1396439 Heading B7H A hydrostatic steering installation is provided with disconnecting valves operating generally in the same manner as that described in Specification 1,396,439, but is applied to an articulated vehicle having leading and trailing parts which are steered with respect to one another.
Patent GB-1400734-A (GB)
Title: Apparatus for continuously producing tubes in particular of  plastics material reinforced with glass fibres
IPC: B29C53/60
Filed: 1972-06-23
Abstract: 1400734 Making pipes PONT-A-MOUSSON SA 23 June 1972 [1 July 1971] 29697/72 Heading F2P Apparatus for producing tubes comprises an axially stationary mandrel 1, means 19 for depositing thermosetting material around the mandrel and means 12 for withdrawing the formed tube from the mandrel, the mandrel having internal heating means for hardening the thermosetting material. An auxiliary polymerization stove 20 may also be provided. In the embodiment shown the mandrel is rotated via a spindle 7 and is divided into three coaxial passageways 37, 38, 39 by tubes 32, 33. Hot fluid from a supply pipe 51 flows through central passageway 39 and is returned to pipe 52 through the outermost passageway 37. Compressed air is blown into passageway 38 which communicates via apertures 42, 43 with the surface of the mandrel, thus forming a film of air between the mandrel and the tube and reducing friction therebetween. A strip 23 of polyester film is wound on to the mandrel from reel 22 and its edges are welded by ultrasonic welding device 24. Reinforcing elements 26, e.g. filaments, rovings, mats &c. of glass, impregnated with resin from a tank 27, are then applied to the mandrel. A sectioning machine is provided to cut the tube into sections of the required length. In another embodiment (Fig. 3, not shown) the mandrel is electrically heated.
Patent GB-1197315-A (GB)
Title: Semiconductor Device
Inventor: HAHN CLARENCE DAVID
IPC: H01L29/00
Filed: 1967-06-28
Abstract: 1,197,315. Semi-conductor devices. MOTOROLA Inc. 28 June. 1967 [29 Aug., 1966], No. 29720/67. Heading H1K. A low voltage Zener junction (specifically in a diode but suitable for use in a transistor) is formed by alloying metal from a deposit 59 through a high resistivity layer 54 epitaxially grown on the surface of a substrate 53 of uniform and lower resistivity, the junction being so formed as to lie under passivation 55 within the boundary of electrode 59 which extends over the passivation. In a variant diode the uniform resistivity substrate may itself be a layer epitaxially grown on low resistivity substrate of the same conductivity type. Semi-conductors used may be silicon, germanium, or a compound. The passivation may be deposited silicon oxide. The alloying metal may be aluminium, titanium, or antimony-gold. Aluminium electrodes may be built up with successive layers of chromium, silver, and gold. Diodes may be sealed in glass housings and utilize a pressurized contact.
Patent GB-1345733-A (GB)
Title: Photographic apparatus
IPC: G03B17/52
Filed: 1971-06-24
Abstract: 1345733 Processing film sheets POLAROID CORP 24 June 1971 [26 June 1970] 29736/71 Heading G2A In a photographic apparatus in which processing liquid is spread between two superposed sheets of photographic material by passing the sheets between a pair of pressure-applying members, the gap between these members is greater at their marginal portions than in the centre, so that the layer of liquid is thicker at these marginal portions than in the centre. In this way the possibility of under-development at the margins is avoided. Fig. 2 shows an exploded view of the pressure-applying or spreader elements, as mounted in the camera of Fig. 1 (not shown). The first spreader element 26 has a flat section 64 from which a section 66 extends at an angle to define a sheetcontacting surface 68. Section 64 has ears 72, 74 at either end, the ears having slots 76, 78. The second spreader element 28 has a flat section 32 connected to a platform 34 to define a sheet-contacting surface 36. At the ends of platform 34 are flanges 48, 50 having holes 80, 82 therein. The element 26 carries a pin 70 at its mid-point, and a rod 30 passes over this pin. When elements 26, 28 are assembled together, holes 80, 82 are in alignment with slots 76, 78, and the ends of rod 30 pass through these aligned apertures, so that the elements 26, 28 are pivotally attached to each other. They may consequently be pivoted apart for inspection or cleaning. As shown in Fig. 7, when the spreader elements 26, 28 are in their operative positions the element 26 has recesses 140, 142 near its ends, and the flexible rod 30 exerts a force against pin 70 so that the element 26 is deformed into the configuration shown in Fig. 7. Thus as the two photographic sheets 122, 128 are drawn between the spreader elements, so spreading the processing liquid 134 between the sheets, the liquid layer is formed with an increased thickness 136, 138 at each end. In the modification of Fig. 11 (not shown) one of the spreader elements is a roller having concavities (160, 162) towards its ends, so producing the same result.
Patent GB-1380085-A (GB)
Title: Moulding assemblies for making magnetic printing bases
IPC: B41F27/02
Filed: 1971-11-09
Abstract: 1380085 Moulding printing cylinders MONARCH MARKING SYSTEMS Inc 9 Nov 1971 [9 Nov 1970] 29755/74 Divided out of 1380084 Heading B5A [Also in Division B6] The complete Specification is substantially identical to that of the parent Specification 1,380,084, but the claims are directed to a moulding assembly.
Patent GB-159595-A (GB)
Title: Improvements in brushes for use in combing machines and the like
IPC: D01G19/22
Filed: 1919-11-29
Abstract: 159,595. Heywood, T. Nov. 29, 1919. Securing brushes on shafts.-In brushes, particularly for use in combing-machines, of the type comprising a stock formed in sections a<1>, a<2>, which are secured in position on a shaft c by means ot end bushes b provided with inner and outer flanges b<1>, b<2>, the outer surface of the flange b<1> is of conical shape to allow for adjustment of the brush sections. Rotation of the stock relatively to the end bushes is prevented by means of a projection b<3> on one of the bushes fitting into an opening in the end of a section.
Patent GB-815585-A (GB)
Title: Improvements relating to powder mixers
IPC: B01F29/62
Filed: 1954-10-15
Abstract: 815,585. Batch mixing-machines. APEX CONSTRUCTION Ltd., and PECK, W. C. Oct. 14, 1955 [Oct. 15, 1954], No. 29804/54. Class 86 A powder mixer comprises a mixing vessel having a central cylindrical portion 1 and end portions 2, each end portion 2 being in the form of a frustum of an oblique cone. The vessel is rotated about a horizontal axis, perpendicular to the axis of the cylindrical portion, by an electric motor 5 through gearing enclosed in a casing 6. The axis of rotation may be inclined with respect to the horizontal. Removable covers 3 are provided.
Patent GB-1458131-A (GB)
Title: Filter for liquids containing a gas
IPC: B01D35/01
Filed: 1974-07-05
Abstract: 1458131 Filters J L GRATZMULLER 5 July 1974 [8 Aug 1973] 29853/74 Heading B1D A filter for filtering a liquid (e.g. oil) containing a gas (e.g. air) comprises cylindrical mesh filter element 7 in chamber 1 having inlet 13 and outlet 17, and conduit 27 for removing gas in the upper part of compartment 11 by venturi effect into the liquid being discharged through outlet 17. The conduit 27 opens into the outlet 17 through a constricted orifice. The transverse cross-section over at least part of the length outlet 17 is smaller than that of inlet 13. Compartment 9 may contain a magnet 31 for removing metallic impurities from the liquid.
Patent GB-230014-A (GB)
Title: Improvements in and connected with motor road vehicles
IPC: B60G9/02
Filed: 1924-12-12
Abstract: 230,014. Violet, M. A. Feb. 29, 1924, [Convention date]. Axles; radius rods.-The front axle P is formed in one piece with its ends P' turned up to form pivot axles for the steering wheels. The front axle is connected with the torque tube D by radius rods T connected to the socket member U of a ball-and-socket joint U. V, Fig. 3. The ball member V is supported from the torque tube D and. the socket member U is held against the ball member by a spring Z.
Patent GB-207969-A (GB)
Title: Improvements in electric switch plugs
IPC: H01R13/70
Filed: 1922-11-03
Abstract: 207,969. Crust, R. Nov. 3, 1922. Plug couplings combined with electric switches and of the .kind in which the pair carry means to engage in contact the switch member or bridge and also for locking the plug in position whilst the switch is on, have a rotatable member or button combined with the plug member to operate both the switch and a locking member in the socket element. The switch is preferably of the quick action type and comprises an arm S carrying contacts adapted to bridge the gaps between each plug pin P' and an adjacent terminal S' when the plug is in place and the button has been turned. It is operated through a spring D and a member A which is engaged by a spindle P<0> when the plug is in position. A disc A<1> having projecting arms ad'apted to engage notches P<2> in the pins is also actuated by the spindle P<7>. The spindle is operated by a rotatable member P preferably forming a part of the plug structure. Specification 118,378 is referred to.
Patent GB-966260-A (GB)
Title: Synthetic latex and foam rubber prepared therefrom
Inventor: SCHMIDT ERNST
IPC: C08J9/30
Filed: 1962-08-07
Abstract: A reinforced synthetic rubber latex has an average particle size in excess of 1,000 angstroms, the disperse phase of the latex being composed of spherical composite particles containing a synthetic conjugated diene rubber and a rubber reinforcing substance. Specified rubbers are polybutadiene, polyisoprene, polychloroprene, butadiene-acrylate, isobutylene-isoprene, butadiene-acrylonitrile chloreprene-nitrile, butadiene-pyridine, styrene-chloroprene and styrene-isoprene rubbers. The rubber reinforcing substance may be polystyrene, chlorinated styrene polymers styrene-acrylonitrile copolymers, vinyl or vinylidene polymers or copolymers, cross-linked styrene polymers, polymethylmethacrylate, cross-linked styrene-butadiene copolymers, hard vulcanised SBR and polybutadiene, styrene-butadiene-divinyl benzene-methacrylic acid quaternary polymers neutralized by an amine or alkaline substance, carbon black, rubber reinforcing silica, water soluble metal silicates and calcium carbonate. Vulcanizing ingredients may be introduced into the latex, the latex frothed, gelled and vulcanized.  A pigment filler e.g. calcium carbonate or a phosphate may be added to the latex before foaming.  Referring to Example (1) a butadiene-divinyl benzene-styrene terpolymer latex containing 10 parts terpolymer and a GR-S latex containing 100 parts rubber are agglomerated and concentrated and then mixed with sulphur, vulcanizing ingredients and antioxidant whipped to a foam with diphenyl guanidine, zinc oxide and sodium silicofluoride dispersions put on a heated mold, gelled and vulcanized.  Examples (2) to (6) employ similar foaming techniques on different mixtures.
Patent GB-738177-A (GB)
Title: Improvements in or relating to the production of phenolate solutions and phenols
Filed: 1952-11-28
Abstract: The invention comprises a new process for the production of a purified phenolate solution from tar-oils (preferably obtained by the distillation or coking of hard coal, lignite or oil-shale), which comprises forming a phenolate solution by mixing the tar-oil with an alkali solution, in such proportions that 1 mol. of the phenol to be removed is mixed with at least 1 mol. of alkali, and thereafter purifying the resulting phenolate solution by treatment with an adsorbing agent.  Specified adsorbing agents are the basic oxides, hydroxides and carbonates of iron, magnesium and calcium, bleaching earths (e.g. bentonite, nontronite, beidellite and hectorite), alumina, "Luxmasse," and the "caustic slurry" obtained by heating phenolate lye residues with lime. p  Preliminary purification of the tar-oils by steam treatment or extraction with benzine may be carried out before adsorbing the phenolate solution.  In examples: (1) the phenolate lye obtained from a hard coal low temperature distillate (boiling-point range 170-360 DEG  C.) is purified by treatment with benzine, then steam, and finally mixed with fuller's earth, decantation and filtration yielding a pure phenolate solution; (2) phenolate lye from tar oil (b.p. 270 DEG -360 DEG  C.) is diluted with benzine and treated twice at the boiling point with washed clay to which ferric hydroxide may be added, the clarified phenolate solution then acidified, and phenols isolated by distillation; (3) phenolate lye from a tar oil fraction (b.p. 175-205 DEG  C.), is treated with steam and then calcium hydroxide added.  The lime slurry is separated, and crude phenols extracted by treatment with carbon dioxide, yielding phenol, o-cresol and m-, p-cresol on distillation. Other examples describe modifications of the above.
Patent GB-723729-A (GB)
Title: Improvements in machines for spraying insecticides and the like
Inventor: INGLETON FREDERICK GEORGE
IPC: A01M7/00
Filed: 1952-11-28
Abstract: 723,729. Crop sprayers. WEEKES & SON, Ltd., W. Nov. 27, 1953 [Nov. 28, 1952], No. 30187/52. Class 69 (3). A centrifugal fan 7 is mounted in a cylindrical casing 8 at the rear end of a trailer 1, and is driven by an I.C. engine 3 via a shaft 10. Midway between the ends of the casing, which provide the fan inlet, a parallelsided aperture 31 is formed extending partly around the casing, and is partly overlapped by a baffle 34 located endwise on the casing. The edge of the baffle which overlaps the aperture has a slot 37 so that by turning the baffle on the casing the fan outlet of greater width, defined by the slot 37, can be adjusted from end to end of the aperture. Further baffles 42, Fig. 2, are provided, and the fan discharges air through an angle A. Along that part of the fan outlet defined by the slot 37 a greater volume of air is discharged, and the spray in that sector, shown by angle B, will be carried a greater distance. The engine 3 drives a centrifugal pump 4 which draws liquid insecticide from a tank 15 through a pipe 18 and feeds it to spraying nozzles 27 mounted on two arcuate pipes 26. Excess insecticide is returned to the tank through a relief valve 23 and pipe 22. In order to agitate the tank liquid a pipe 20 is provided with a branch pipe 41 which returns a proportion of the liquid to the tank. A branch pipe 39 with a valve 40 enables the pump to supply the tank with water to dilute the insecticide concentrate. The baffle 34 may have one or more slots 37, and two or more baffles may be provided which overlap opposite edges of the aperture 31.
Patent GB-304861-A (GB)
Title: Improvements in or relating to coal-dust fired steam boilers
IPC: F23C99/00
Filed: 1927-11-10
Abstract: 304,861. Witkowitzer Bergbau-und Eisenh³tten - Gewerkschaft, and Salat C. Nov. 10, 1927. Pulverulent - fuel furnaces. - A coaldust fired boiler has the combustion space b surrounded on a plurality of sides by the boiler d and is fired from above through a supply tube a adjustable in height, the flame reversing at or near the bottom c of the combustion chamber where the ash and slag are delivered in a molten form. The coarser particles of fuel are consumed while floating upon the molten slag, and the flame is thus freed from impurities before reaching the boiler d. By adjusting the burner a the zone of maximum temperature may be varied. A mixture of blast furnace gas and coal dust may be employed. The burner may be located centrally of three or more boiler units or of an annular boiler.
Patent GB-606355-A (GB)
Title: Improvements in or relating to brakes
IPC: F16D51/26
Filed: 1945-11-12
Abstract: 606,355. Brakes. BENDIX AVIATION CORPORATION. Nov. 12, 1945, No. 30232. Convention date, Dec. 13, 1944. [Class 103 (i)] Mounting means for the cylinders of hydraulically-operated drum brakes comprises a box. section stamping through the sides of which the cylinder extends and which is secured to the axle casing of a vehicle, or other fixed part. The brake shown comprises a pair of shoes 18, 20 arranged to be applied by a pair of hydraulic cylinders 24 and to anchor at one end or the other according to the direction of rotation of the drum, each piston 22 being formed with a flange to transmit the anchoring torque to the cylinder. Each cylinder 24 is formed of a length of tubing and extends through and is welded to the sides of a deep-drawn stamping 28 of box-section which is secured at its rear lower edge to a vehicle axle casing and to the rear face of which a backing plate is welded. The cylinders are connected by a pipe 48 and supply and bleeder connections are respectively welded to them. The release springs 44 are hooked to the edge of the members 28. Adjusting members 50 for the shoes such as described in Specification 605,939 are provided. The parking operating mechanism comprises a lever 58 pivoted to shoe 20 at 60 and connected to shoe 18 by a link 62 which is forked at the ends to embrace the shoe webs and is supported by a nib 68 and an ear 70. A spring 64 urges the link towards the shoe 20. The lever is operated by a Bowden cable 52 which passes through the back plate. Specification 598,339 also is referred to.
Patent GB-723894-A (GB)
Title: Improvements in or relating to roofs for storage tanks or similar structures
Inventor: FOSTER ROBERT HENRY
IPC: E04H7/06
Filed: 1951-12-28
Abstract: 723,894. Roofs. MOTHERWELL BRIDGE & ENGINEERING CO., Ltd., and FOSTER, R. H. Dec. 22, 1952 [Dec. 28, 1951], No. 30312/51. Class 20 (4). [Also in Group XXIX] A conical roof for a circular structure such as a liquid storage tank comprises a plurality of radially disposed sheet-metal panels which extend between a peripheral curb and a central crown and in which, at the junction between each pair of adjacent panels, a downwardlyextending stiffening flange is formed integrally upon the radial edge of one of the panels, the unflanged edge of the other panel of the pair overlapping the first panel and being secured by a continuous weld to its upper surface, the inner edges of the flanges on the panels being secured over their full depth to the crown member and the outer ends of the flanges abutting over their full depth against the curb and the panels being unsupported except at their ends. In one form shown (Figs. 4, 5 and 6) panels 12, 13 and 14 having flanges each comprising a downward portion 15 and a return flange 16, extend between a curb 17, welded to the side wall 10 of the tank, and a crown member consisting of two annular plates 21, 22 welded to two cylindrical plates 23, 24. Panel 12 which is flanged at both its radial edges is first placed in position and then a plurality of panels 13, flanged at one edge only are positioned each with their unflanged edge overlying the flanged edge of the adjacent panel. The roof is completed by an unflanged panel 14. The outer ends of the flanges of all panels are cut away so that the panel surfaces overlie the curb 17 and the return flanges 16 are bolted to cleats 18, welded to the tank side. The inner ends of the flanges of all panels are welded to square pad plates 20 which in turn are welded to the annular crown members 23, 24, and a circular top plate 26 is placed over the crown member and welded to the panels at its periphery. In an alternative form, the roof is constructed of thicker panels flanged at both edges which alternate with thinner unflanged panels. In both forms the return flanges 16 may be omitted but for large structures the panels are then reinforced by triangular or rectangular stiffening plates between the flanges 15 and the top portions of the panels. According to the Provisional Specification the crown member consists of a pair of-superposed circular plates, which are each flanged downwards at its outer edge to conform with the slope of the panels, and an angle-section ring of smaller diameter separating the two plates. The inner ends of the panels fit between the plates, are slightly spaced from the angle-section ring and are welded to the periphery of the plates and also to the edges of radial slots in the plates.
Patent GB-301188-A (GB)
Title: Improvements in garages for housing road vehicles
IPC: E04H6/04
Filed: 1927-11-12
Abstract: 301,188. Glewes, M. H. Nov. 12, 1927. Garages for road vehicles are formed with opposed doors and are mounted to rotate in order to avoid backing the car and also to bring the openings to dead ends for security. The framework 1 carrying the roof 2 is mounted on frame bars 21 to which are secured wheels 19 which run on inner and outer circular tracks 18 secured to the foundation bars 8. These bars also carry an upstanding bearing 7 and pintle 6 on which the centre of the floor is supported by washers 12 or by ball or roller bearings. The building is rotated by bevel gearing operated from a handle within the building and a fixed bevel rack 23 secured to the foundation, and is locked into position by a sliding bolt 36. Opposed sliding or hinged doors 3 are provided in the wall of the garage for the car and also a small door 43. Inspection doors 44 are provided in the floor of the building.
Patent GB-1140937-A (GB)
Title: Whippable composition and manufacture thereof
IPC: A23L9/20
Filed: 1967-06-30
Abstract: 1,140,937. Dried whipped topping emulsions. GENERAL FOODS CORP. 30 June, 1967 [30 June, 1966], No. 30418/67. Heading A2B. A dried emulsion of fat, emulsifier, protein, and carbohydrate, suitable for the preparation of whipped toppings, for example by combination with water or milk, is characterized in that at least a part of the carbohydrate is comprised of a mixture of sugars, which mixture provides a substantially non-crystallising carbohydrate melt, for example sucrose mixed with at least one of lactose, maltose, dextrose, and corn syrup solids. The protein may be in the form of non-fat milk solids, whey solids, soy protein, egg albumen, dried cream cheese, gelatin, calcium caseinate or preferably sodium caseinate. Numerous fats and emulsifiers are listed. The dried product may be made by mixing the ingredients, homogenizing, and spray drying. Optional ingredients include stabilizers, flavourings, colours, lecithin or hydroxylated lecithin, acids, and minerals.