baber/WOPTO huggingface dataset:
Patent GB-865751-A (GB)
Title: Process for the preparation of a compound of the allopregane series
Filed: 1959-09-29
Abstract: 17a : 21-Dihydroxy-3: 11: 20-triketo-allopregnane-21-acylates are prepared by oxidation of the corresponding 3b -hydroxy compounds with an N-halo-carboxylic amide or imide in presence of a tertiary alcohol, an acid-binding agent and a halogenated aliphatic hydrocarbon.  The 21-ester group may be derived from an aliphatic, aromatic or araliphatic carboxylic acid such as acetic, propionic, butyric or phenylpropionic acid.  Preferred halogenated hydrocarbons are saturated and contain 1 to 6 carbon atoms, examples being dichloromethane, dichloroethane, trichloroethane, chloroform, bromoform, carbon tetrachloride, dichlorobutane and bromobutane. Amides and imides referred to are N-chloro-acetanide and -succinimide and N-bromoacetamide, -phthalimide and -succinimide, and acid-binding agents mentioned are picoline, collidine, pyridine, toluidine, quinoline and N-dimethylaniline.  Tertiary butanol and t-amyl alcohol are the specified alcohols.  Detailed examples are given. Specification 744,981 is referred to.
Patent GB-1204165-A (GB)
Title: Improvements in or relating to motor-driven impeller pumps
Inventor: BOES GUNTHER
IPC: C07D295/027
Filed: 1967-08-19
Abstract: 1,204,165. Centrifugal pumps. LOEWE PUMPENFABRIK G. m. b. H. Aug.19, 1967, No, 33065/67. Heading F1C. [Also in Division H2] A motor-pump unit having a common integral housing 10, Fig.1, and a sleeve between the motor rotor and stator chambers, has an assembly comprising pump impeller 22, motor rotor 23 and hollow shaft 18 rotatably mounted via bearings 19, 20 on a fixed shaft 11 mounted directly to the housing. A thrust bearing 21 is provided. A thread 16 on the sleeve causes dirt particles in the rotating fluid in rotor chamber to be moved away from the clearance between rotor and sleeve. The sleeve is held in position via a ring 15 by motor stator 12. An annular plate 24 has drain holes 25 on a circle of diameter greater than that of the sleeve so that no fluid pools can form in the sleeve when the housing is only partly filled with fluid. The impeller 22 and plate 24 may be replaced to provide a pump having different characteristics. Cover 26 may be of plastics, aluminium or sheet iron. In an alternative embodiment, Fig. 2 (not shown), the motor rotor and impeller chambers are positively sealed from one another by an annular plate (31) arranged transverse to the shaft axis and co-operating with a sliding seal carried by the hollow shaft, and the sleeve has no threaded portion. Moreover, the motor end of the hollow shaft is sealed, and the fixed and hollow shafts have passages 28, 29, 30 therein communicating with the high- and low-pressure regions of the pumps to circulate pumped fluid through the bearings for lubrication thereof. Further, a rotations direction indicator (34) is provided.
Patent GB-975768-A (GB)
Title: Producing lead-potassium-sodium alloys electrolytically
IPC: C25C3/36
Filed: 1962-08-28
Abstract: Lead-potassium-sodium alloys are obtained by electrolysing a fused electrolyte of potassium and sodium hydroxides using a molten lead cathode and an anode of a different metal such as iron which does not melt at the operating temperature.  Preferably the sodium hydroxide is not less than 20%, e.g. between 30 and 50%, by weight of the electrolyte, and a part of the potassium hydroxide may be replaced by potassium carbonate or chloride, preferably not exceeding 10% by weight of the electrolyte.  The anode may be a perforated circular metal plate.  For example, using an electrolyte of 46 kg. KOH and 24 kg. NaOH at 400  DEG C., an alloy containing 2.8% K, 0.5% Na and balance Pb is obtained.  The Na content of the alloy obtained may be reduced by melting it along with KOH or KOH mixed with a smaller amount of NaOH than in the original eletrolyte, K2CO3 or KCl again optionally replacing part of the KOH.  The final alloy may contain 3.3% K and 0.1% Na.  The above alloys may be used to debismuthize lead. Specification 491,827 is referred to.
Patent GB-868891-A (GB)
Title: Hand-grips for cleansing pads
IPC: A47L13/146
Filed: 1958-10-16
Abstract: 868,891. Sponge-cleaning devices. O'RORKE H. C. A. Oct. 2, 1959 [Oct. 16, 1958], No. 33107/58. Class 19. A cleaning device has a hand grip comprising two relatively movable actuating arms 10, 11 hinged together at one end 12. The arm 11 has hingedly secured thereto two compressor members 14, 15 between which a cleaning pad 19 is supported. The other arm 10 terminates in a stirrup 13 that is connected to the compressor members by links 17, 18. When the two arms are moved together the pad is compressed.
Patent GB-1064387-A (GB)
Title: A semiconductor rectifier device
IPC: H01L25/07
Filed: 1964-08-13
Abstract: 1,064,387. Rectifier mountings. SIEMENSSCHUCKERTWERKE A.G. Aug. 13, 1964 [Aug. 16, 1963], No. 33116/64. Heading H1K. A mounting for a stack of imperforate rectangular solid state (e.g. selenium) rectifiers consists of a metal (e.g. aluminium) trough 1 whose base has lateral extensions 1a 1b to provide a large area contact with a heat sink. The rectifiers are stacked lengthwise of the trough, the rectifiers 3 and electrodes 4 being held in contact by a spring 6. The base and side walls of the trough are insulated by an inserted liner 9 and the end walls by insulators 7. Depressions 7a in these insulators allow for the stack to be assembled in a jig (not shown), extracted therefrom by tongs to hold the spring 6 in compression and thus transferred to the housing. After insertion of the stack the housing is closed by a cast epoxy resin filler 8.
Patent GB-1389239-A (GB)
Title: Electronic apparatus for the production of masks for subminia turised circuits
IPC: H01J37/317
Filed: 1972-07-14
Abstract: 1389239 Optical positioning THOMSON-CSF 14 July 1972 [16 July 1971] 33200/72 Heading H4D [Also in Divisions Gl and H1] For the manufacture of integrated circuits a plurality of replicas are made of a master mask by irradiating the master mask so that it emits photo-electrons in unmasked areas, and directing the electron image on to a resin coated wafer to polymerize the resin in exposed areas. The exposed wafer may then be etched and processed in known manner to produce the required replica. The master mask 1, Fig. 1, may comprise a quartz plate covered with a pattern of titanium oxide and a palladium layer. The mask is illuminated by an ultra-violet lamp 2 so that areas of the palladium layer not screened by the opaque titanium oxide emit photo-electrons which are accelerated on to the wafer 3 and focused by a magnet field. The wafer 3 is shown as supported on a movable metal plate 4, and in practice a number of wafers may be mounted on a frame movable through an airlock into a continuously evacuated chamber (Figs. 15 and 16, not shown). The external permanent magnet providing the focusing field may be movable to expose a removable part of the casing through which the master mask may be inserted and withdrawn. The master mask is supported in a frame which is movable by means of three rods 7 (only one shown in Fig. 1) each controlled by a piezoelectric element 8. Fig. 1, also shows an optical device 1231 for projecting light from a lamp 10 on to a photoemissive index mark on the mask 1. Alignment of masks.-As shown in Fig. 3, the master mask may be provided with two photoemissive index marks E1 and E2 whilst the wafer is provided with corresponding areas R1 and R2 which emit light or X-rays when bombarded by electrons such radiation being converted with an electrical sign 1. The rod 71, Fig. 3, is adjusted for maximum signal, and then rod 72 is adjusted: finally the rod 72 is adjusted for maximum signal, and the whole process may be repeated. Fig. 9, shows a circuit for carrying out the process automatically. X- ray emission from area R1 (Fig. 3), is detected by scintillator 1061 the output pulses from which are counted by counter 1003 for a predetermined time interval; the count of the previous interval is stored in register 1004 and a comparator 1005 indicates whether the count is increasing or decreasing and determines the count direction or reversible counter 1006. The programmer 1001 adds increments to the counter 1005 after each interval until the count in 1003 ceases to increase; thereby, via a register 1071, digital to analogue converter 1171 and the piezoelectric control, the rod 71 is adjusted in increments of 1 micron to its optimum position. The switch 1008 then alters the output to control the position of rod 72, and finally switches lamp 1042 to illuminate index mark E2 so that rod 73 may also be adjusted in the same way. Finally the whole process may be repeated by using 0À1 micron increments.
Patent GB-1407146-A (GB)
Title: Hot dip galvanising
IPC: C23C2/06
Filed: 1973-07-12
Abstract: 1407146 Galvanizing ferrous articles: Flux for galvanizing FOSECO INTERNATIONAL Ltd 23 May 1974 [12 July 1973] 33313/73 Headings C7F and C7M A ferrous article is coated with zinc by hot dipping using, on the surface of the bath, a flux comprising magnesium chloride (30 to 70 per cent), sodium and/or potassium chloride (20 to 70 per cent), and calcium chloride (0 to 20 per cent). Other chlorides, e.g. Zn, Al, Pb, ammonium or zinc-ammonium may be present up to 20 per cent. Frothing agents, e.g. tallow, sawdust, glycerine, and. resins may also be added.
Patent GB-486551-A (GB)
Title: Improvements in or relating to spinning spindles
IPC: D01H7/06
Filed: 1936-12-07
Abstract: 486,551. Spinning-spindle apparatus. LECLERCQ & FILS, G. Dec. 7, 1936, No. 33519. Convention date, Oct. 2, 1936. [A Specification was laid open to inspection under Sect. 91 of the Acts, Oct. 1, 1937.] [Classes 120 (ii) and 120 (iii)] In spinning- spindle apparatus comprising an inverted flyer and dead spindle, a cup 15 carried by the spindle is provided with hooks co-operating with a cover 26, which may be carried by the tube support, to engage the yarn at starting and to ensure attachment to the metal tube 17. The tube is splayed at its ends and may be perforated to facilitate drying or dyeing. It is secured by springs 21 to a support 16 which is held on the spindle by the engagement of projections 22 on an elastic collar or on the springs 21 with a channel 24. The support 16 carries a drag washer 19 bearing on a preferably metallic disc 20 in the cup 15. Lubrication may be effected under pressure through a hole 9 and suitable passages in the supporting socket 3.
Patent GB-1150058-A (GB)
Title: Continuous process for extruding cellular thermoplastics
Inventor: WINSTEAD THOMAS WILLIAMSON
IPC: B29C44/34
Filed: 1966-07-26
Abstract: 1,150,058. Extruding foamed thermoplastics. T. W. WINSTEAD. 26 July, 1966 [2 Aug., 1965], No. 33524/66. Heading B5A. In a machine for extruding foamed thermoplastics material, e.g. foamed polystyrene, through an extrusion orifice 29, the starting material is heated in a screw extruder 5, blowing agent is introduced via a conduit 37 and mixed with the heated material at the downstream end of extruder 5, and the mixture is fed to a metering pump 10, preferably a positive displacement type gear pump, which regulates the pressure within the extruder and delivers the mixture at a constant rate to cooling device 14 upstream of orifice 29. Chamber 14 has intercommunicating internal and external chambers 20, 17 respectively, through which cooling fluid flows. In a second embodiment, Fig. 2 (not shown), the metering pump and cooling device are combined.
Patent GB-627600-A (GB)
Title: Improved sharpener for shears and the like
IPC: B24D15/06
Filed: 1946-11-12
Abstract: 627,600. Sharpener for shears. JOSEPH, J. D. B. Nov. 12,1946, No. 33567. [Class 60] A sharpener for shears and the like comprises a hollow body 1, sloping slide and guide ways 4 formed in the sides of the body, a sharpening means 5 held in the slide and guide ways between the sides of the body, and the body having a transverse slot 6 to receive a shear blade and to enable the shear blade to bear upon and be drawn across the sharpening means.
Patent GB-1016408-A (GB)
Title: Pulley apparatus
IPC: F16H55/56
Filed: 1964-08-17
Abstract: 1,016,408. Expanding-wheel gear. EATON MANUFACTURING CO. Aug. 17, 1964 [Sept. 10, 1963], No. 33616/64. Heading F2D. An expanding pulley, operative to take-up slack in a drive belt 70, Fig. 1 (not shown), comprises two flanges 12, 14 fast with rings 38, 60, respectively, made from nylon &c. and having interengaging screw threads 44, the ring 60 rotating together with its flange upon a hub 18 fast with the flange 12. The nylon &c. rings 38, 60 are moulded upon the pulley flanges 12, 14 so that part of their material passes through holes &c. 36 in the flanges, and each ring extends axially on both sides of its associated flange.
Patent GB-646586-A (GB)
Title: Process for the manufacture of vitamin-a compounds
Filed: 1947-12-22
Abstract: Alcohols and aldehydes of the vitamin A series are manufactured by reducing, by means of Raney nickel, compounds of the general formula R=X-CO-SR1, wherein R represents the b -ionylidene group or a group readily convertible thereto (e.g. the a - or the pseudoionylidene group), X represents a methine group, or an unsaturated hydrocarbon group, the double bonds of which form with those in R a continuous series of conjugated double bonds, or a group which after the reduction may be readily converted into such a group, and R1 represents an alkyl group.  The aldehydes, which are obtained by working in aqueous alcohol, may be reduced to the alcohols, e.g. by the Meerwein-Ponndorf method, whilst the latter may be oxidized to the former, e.g. by means of carbonyl compounds in the presence of secondary or tertiary aluminium alcoholates.  The starting materials are obtainable by the Reformatsky reaction from b -ionone or the "C18 ketone" and bromothioacetic esters, followed, if desired, by dehydration (which alternatively may follow the reduction), or by condensation of carboxylic acid halides with mercaptans.  In examples: (1) thio-vitamin A acid S-methyl ester is boiled with Raney nickel in alcohol to produce vitamin A; (2) b -ionylideneacetic acid is treated with thionyl chloride in benzene, the resulting acid chloride is condensed with methyl mercaptan in the presence of anhydrous aluminium chloride, and the product is stirred with Raney nickel in dioxane to form b -ionylidene-ethanol; (3) the alcohol in (1) is diluted with 20-30 per cent of water, the product being a mixture of vitamin A and vitamin A aldehyde, which are separated by chromatography; (4) a similar modification of (2) yields b -ionylidene-acetaldehyde.  The Specification as open to inspection under Sect. 91 comprises also the use of the selenium and tellurium analogues of the starting materials formulated above, and includes a modification of example (2) above in which the methyl b -ionylidenethioacetate is prepared by heating b -ionone with methyl bromothioacetate in benzene in the presence of zinc.  This subject-matter does not appear in the Specification as accepted.
Patent GB-595054-A (GB)
Title: Compositions comprising acrylonitrile polymers and copolymers and shaped articles produced therefrom
IPC: C08J3/09
Filed: 1945-12-14
Abstract: Compositions suitable for making yarns, films and shaped articles comprise a solution of polyacrylonitrile or a copolymer in which at least 85 per cent by weight is acrylonitrile, in a solvent comprising one or more compounds from the group consisting of malonitrile, methylene thiocyanate and cyano-methylene thiocyanate.  The compositions are clear mobile solutions at elevated temperatures, e.g. 100 DEG  C., and gel at room temperature. In small amounts, the nitriles act as plasticisers for the polymer.  Specified compounds with which the acrylonitrile may be copolymerized are vinyl acetate and chloride, acrylic acid and its esters and homologues, styrene, isobutylene and butadiene (see Group V).  Optionally, the compositions may contain other plasticisers (non-solvents for the polymer), e.g. glycerine, and dyes, linear polyamides, cellulose ethers and esters, polyvinyl chloride and acetate and polyacrylic acid.  The solutions may be shaped to form filaments, yarns, films, tubes and other articles, by moulding, casting or extrusion into an evaporative atmosphere or a bath of coagulant miscible with the solvent, but an inert non-solvent for the polymer.  The properties of the articles can be improved by a subsequent stretching operation. Specifications 404,504, 585,368 and 594,999 and U.S.A. Specifications 2,117,210, 2,140,921 and 2,167,537 are referred to.ALSO:Compositions suitable for making yarns, films and shaped articles comprise a solution of polyacrylonitrile or a copolymer in which at least 85 per cent. by weight is acrylonitrile, in a solvent comprising one or more compounds from the group consisting of malononitrile, methylene thiocyanate and cyano-methylene thiocyanate [see Group IV].  The compositions are clear mobile solutions at elevated temperatures, e.g., 100 DEG C. and gel at room temperature.  In small amounts the nitriles act as plasticizers for the polymer.  The acrylonitrile may be copolymerised with butadiene.  Optionally, the compositions may contain other plasticizers (non-solvents for the polymer) e.g. glycerine, and dyes, linear polyamides, cellulose ethers and esters, polyvinyl chloride and acetate and polyacrylic acid.  The solutions may be shaped to form filaments, yarns, films, tubes and other articles, by moulding, casting or extrusion into an evaporative atmosphere or a bath of coagulant miscible with the solvent but an inert non-solvent for the polymer.  The properties of the articles can be improved by a subsequent stretching operation.  Specification 404,504, 585,368 and 594,999, [all in Group IV], and U.S.A. Specifications 2,117,210, 2,140,921 and 2,167,537 are referred to.
Patent GB-410427-A (GB)
Title: Suction filters especially applicable for the treatment of printing inks
IPC: B01D29/085
Filed: 1933-12-02
Abstract: 410,427. Filters. ZIMMER'S ERBEN AKT.-GES., F., Varnsdorf, Czecho- Slovakia. Dec. 2, 1933, No. 33930. Convention date, Dec. 2, 1932. [Class 46.] A device, applicable especially for filtering printing inks and dyes, comprises a tank A with an upper opening over which a sieve Band funnel D are detachably secured and an opening in the side wall closed by means of a hinged cover E formed in one with a platform F which serves to support a filtrate collecting vessel G. When the material under treatment has been charged into the funnel D and vacuum applied to the tank by means of a pipe L the liquid is drawn through and falls into the vessel G. The filled vessel is brought outside the tank when the cover E is opened and turned about its hinges. Rubber packing J is provided in a groove round the periphery of the cover E.
Patent GB-175131-A (GB)
Title: Improvements in or relating to spring wheels, pulleys, shaft couplings and the like
IPC: F16D3/62
Filed: 1920-12-01
Abstract: 175,131. Pomeroy, J., and Stamper, C. W. Dec. 1, 1920. Spring wheels. - An outer rim g has depending flanges h, j surrounding an inner boss or felloe a, split cylindrical spring rings c, d being passed through holes in the parts a, h, j and retained in position by bolts o, nuts m, n and distance pieces p. Studs e in the rings c engage the slots of the rings d to keep the slots oppositely placed. When assembling, the spring holes are filled with lubricant, packing in annular grooves u, v, in the flanges h, j preventing its escape. When the boss a is of wood, the spring holes have metal linings.
Patent GB-363088-A (GB)
Title: Improvements in maps guide books and the like
IPC: G09B29/00
Filed: 1930-11-12
Abstract: 363,088. Guide-books. LUGINBUHL, G. R., Bien-Sis, Pully, Lausanne, Vaud, Switzerland. Nov. 12, 1930, No. 34108. Convention date, Nov. 12, 1929. [Classes 16 and 146 (ii).] Road maps, military maps, aviation maps, town guides, or marine charts are provided with one or more maps divided into sections p from each of which extends a line c leading to a thumb notch d enabling the map to be opened at the page on which the section is shown on a larger scale. Specifications 234,526 and 272,370, [both in Class 16, Books &c.], are referred to. The Specification as open to inspection under Sect. 91 (3) (a) refers to the application of the device also to notebooks, directories, and catalogues. This subject-matter does not appear in the Specification as accepted.
Patent GB-846003-A (GB)
Title: Improvements relating to amplifier circuits employing transistors
IPC: H03J3/06
Filed: 1956-11-08
Abstract: 846,003. R. F. couplings; transistor amplifier circuits. TELEFUNKEN G.m.b.H. Nov. 8, 1956 [Nov. 9, 1955], No. 34159/56. Classes 40(6) and 40(7). The circuit coupling a ferrite rod or other aerial to a transistor, or coupling a first transistor to a succeeding one, is arranged so that the input and transistor are substantially power matched at all points in a frequency band. According to the invention the tuned aerial circuit or other tuned input is transformer coupled to the transistor and a coupling capacitor is introduced providing voltage or current coupling between the primary and secondary sides of the transformer. As shown in the figure the transformer is wound on the ferrite rod aerial F and has a primary L and secondary S. The aerial is tuned over a frequency band by variable capacitor Cl which is in series with coupling capacitor C k . The latter is common to both the primary and secondary circuits of the transformer and provides current coupling between them. The voltage across it decreases as the frequency increases and, the winding S providing a voltage of the same polarity, a power match is maintained to the transistor, the input resistance of which decreases with increase of frequency. If a voltage coupling capacitor is to be provided the junction between the windings L and S is connected directly to earth and the coupling capacitor inserted between their other ends. Instead of a ferrite rod F a coupling transformer connected to an external aerial may be used as indicated by the dotted outline.
Patent GB-1001875-A (GB)
Title: Apparatus for the determination of the volume or age of a liquid using radiation dilution techniques
IPC: G01F1/64
Filed: 1961-09-25
Abstract: 1,001,875. Counters. AMES LAB-TEK Inc. Sept. 25, 1961 [Oct. 10, 1960], No. 34274/61. Heading G4D. [Also in Division G1] Apparatus for determining the volume of a liquid more particularly blood or albumen serum by a radiation dilution technique (see Division G1) includes a reversible ring counter, Fig. 7. The counter comprises ten step registers 140-1, to 140-10, each including a memory circuit, two " AND " gates and an " OR " gate and each register having associated therewith a bistable circuit 152 (Fig. 6) to energize the sealer in an appropriate direction and a further bi-stable circuit 156 to count the input pulses irrespective of their direction. The ten registers have common input lines 141, 142 and a common reset line 144. The outputs from the last four stages, the last three stages and the last stage are respectively connected to separate indicators to indicate whether the sample being counted is " too strong," " too old " or to indicate " zero " on a reverse count. Specification 1,001,876 is referred to.
Patent GB-429771-A (GB)
Title: Improvements in and relating to seals for electric cables
IPC: H02G15/23
Filed: 1933-12-07
Abstract: 429,771. Cable endsleeves. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Allgemeine Elektricitõts-Ges. ; 2, Friedrich Karl - Ufer, Berlin) Dec. 7, 1933, No. 34454. Convention date, Dec. 7, 1932. [Class 36] An end-sleeve for single or multi-core cables filled or impregnated with oil or other filling or impregnating compound, comprises one or more layers 3, in the form of tape, and applied under tension, of an elastic and plastic oil and heat resisting material, the layers being applied without an intermediate adhesive. Layers 4 of a pressure - resisting material, such as varnished tape, may be interspersed between the layers 3, which may comprise polymers of acrylic acid, derivatives of acrylic acid such as acrylic acid esters or homologues thereof, or polyvinyl compounds separately or mixed together.