baber/WOPTO huggingface dataset:
Patent GB-1508196-A (GB)
Title: (3r,3'r)-15,15'-didehydrozeaxanthin
IPC: C07C403/00
Filed: 1975-08-20
Abstract: 1508196 Didehydrozeaxanthin F HOFFMANN-LA ROCHE & CO AG 20 Aug 1975 [1 Nov 1974] 47892/76 Divided out of 1508195 Heading C2C The invention comprises [3R,3<SP>1</SP>R]-15,15<SP>1</SP>- didehydro-zeaxanthin. The compound may be prepared by reacting [4R,6R]-4-hydroxy-2,2,6- trimethylcyclohexanone with but-3-yn-2-ol suitably after the free hydroxy group has been masked by treatment of the ketone with isopropenyl methyl ether to yield 2-hydroxy-4- {[4R,6R] - 1,4 - dihydroxy - 2,2,6 - trimethylcyclohex - 1 - yl} but - 3 - yne, acetylating this to give 2 - acetoxy - 4 - {[4R,6R] - 4 - acetoxy- 1 - hydroxy - 2,2,6 - trimethyl - cyclohex - 1 - yl} - but-3-yne, dehydrating this to give the cyclohexene derivative and hydrogenating to yield [3R]-3-hydroxy-#-ionol. The ionol may be converted to a 4-{[4R]-4-hydroxy-2,2,6-trimethyl - cyclohex - 1 - en - 1 - yl} but - 3 - ene- 2-triarylphosphonium halide which may be condensed with 4,9-dimethyl-dodeca-2,4,8,10-tetraen-6-yne-1,12-dial to give the required didehydro zeaxanthin. Alternatively the ionol may be oxidized to [3R]-3-hydroxy-#-ionone, which is then reacted with sodium acetylide to give [3R] - 3 - hydroxy - ethynyl - # - ionol, subsequently hydrogenated to [3R] - 3 - hydroxy - vinyl - # - ionol, converted to [3R]- 3-hydroxy-#-ionylidene ethyl triphenyl phosphonium chloride or bromide which is then condensed with 2,7-dimethyl octa-2,6-then-4- yne-1,8-dial to give the required didehydrozeaxanthin.
Patent GB-1527498-A (GB)
Title: Hip joint prosthesis
IPC: A61F2/36
Filed: 1975-11-21
Abstract: 1527498 Prosthetic hip joints M GAIA 21 Nov 1975 [29 Nov 1974] 47925/75 Heading A5R [Also in Division E2] A prosthetic hip joint comprises a femoral part having a femoral extension 4 and a part-spherical head 3 made of a metal or metallic carbide, and a hemispherical socket 1 formed of an elastomeric material, the inner surface 5 of the socket having embedded therein insert members 6 made of wear-resistant material such as ruby, sintered metal carbides or anisotropic crystals, the insert members having their outer surfaces raised above the inner surface 5 to form a discontinuous hemispherical surface containing channels (7) (Fig. 3, not shown) for passage of lubricating fluid. Alternatively the insert members may be embedded in the part-spherical head with the socket being formed from metal.
Patent GB-1489588-A (GB)
Title: Wet-strength resins and processes for making and using same
IPC: C08G12/00
Filed: 1974-11-06
Abstract: 1489588 Polyureide-epihalohydrin-formaldehyde resins SCOTT PAPER CO 6 Nov 1974 [12 Nov 1973] 48032/74 Heading C3R [Also in Division D2] A process for preparing a water-soluble cationic thermosetting polyureide - epihalohydrin-formaldehyde resin condensate comprises reacting at least one polyalkylene polyamine, having the general formula where R is a C 2 -C 8  alkylene group and n = 2-5, with a urea to form a polyureide, quenching the polyureide-forming reaction and then either reacting the polyureide with an epihalohydrin and then with formaldehyde, or reacting the polyureide first with formaldehyde and then with an epihalohydrin. The polyureide forming reaction may be quenched with water or preferably an organic hydroxyl-containing compound, e.g. aqueous HCHO, an aliphatic alcohol or polyol, simple sugars and sugar alcohols and anhydrides of sugar alcohols. The mole ratio of polyalkylene polyamide to urea is preferably from 0À1-1À0; the mole ratio of epihalohydrin to urea is preferably from 0À018-0À3; and the mole ratio of HCHO to urea is preferably from 1À0-3À0. The polyureide forming reaction is preferably carried out at atmospheric pressures by heating up to a temperature of 110-180‹ C. over a period of 1-4 hours and held at this temperature for 15 min. to 1 hour. The reaction with formaldehyde is generally a 2-stage reaction comprising: (A) methylolation of the polyureide-epihalohydrin intermediate at 65- 85‹ C. and at a pH of from 8-9À5 from 10-100 min.; and (B) condensation at 65-100‹ C. at a pH of from 4À5-7À0 for 30-120 min. A mineral acid, e.g. phosphoric acid, may be used to lower the pH for the condensation stage which stage is usually conducted until the solution of the resin condensate becomes a viscous syrup at the point of incipient gelation, at which time the reaction is terminated by dilution with water, aqueous HCHO or an alcohol and the pH is adjusted to form 6À0-7À0 with alkali, if necessary. In the examples resins are prepared as above by reacting a 2 : 1 mixture of triethylene tetramine and diethylenetriamine with urea, then quenching the reaction with ethylene glycol or water, and then reacting the quenched polyuriede either first with epichlorohydrin and then with HCHO or vice versa. The aqueous resin solutions produced are added to aqueous dye solutions to give printing fluids. Uses.-Wet-strength additives in papermaking processes; the resin component in aqueous printing fluids.
Patent GB-1057513-A (GB)
Title: Improvements in or relating to low level signal amplifiers
IPC: G01R19/18
Filed: 1965-11-12
Abstract: 1,057,513. Valve amplifying circuits. KEITHLEY INSTRUMENTS Inc. Nov. 12, 1965 [Nov. 12, 1964], No. 48087/65. Heading H3W. In an arrangement for amplifying a D.C. signal which is accompanied by a spurious A.C. signal, e.g. mains hum, by modulation on an A.C. carrier, filters are provided to suppress the sidebands produced due to the modulation of the spurious A.C. signal on the A.C. carrier. Modulation is performed by copper 12, the resultant A.C. waveform being fed by transformer 15 to a two-stage A.C. preamplifier, in which the anode circuit of the first valve 30 is tuned to carrier frequency. In addition, the output of the second valve comprises a filter network 25, in which series resonant circuits 45, 46 and 47, 48 respectively suppress the upper and lower sidebands produced by modulation of the spurious A.C. signal on the A.C. carrier. An R.C. network 50, 51 is also included in the filter network for correcting the phase of the A.C. carrier. Following subsequent amplification, the A.C. carrier is demodulated in a synchronous rectifier; overall negative feedback may be applied around the system (Fig. 1, not shown).
Patent GB-1169770-A (GB)
Title: Improvements in or relating to the Stabilization of Halogen-Containing Polymeric Materials
IPC: C08K5/57
Filed: 1967-10-23
Abstract: 1,169,770. Polymer stabilizing compositions. KONINKLIJKE INDUSTRIEELE MAATSCHAPPIJ NOURY & VAN DER LANDE N.V. 23 Oct., 1967 [9 Nov., 1966], No. 48130/67. Heading C2J. [Also in Division C3] A composition useful as a stabilizer for a halogen containing polymer or copolymer is prepared by heating a dialkyl-tin-difluoride and a dialkyl-tin-sulphide, in which the alkyl groups are the same or different and contain 1-18 carbon atoms, e.g. butyl and octyl groups, at 50-220 C., preferably 100-200 C. The molar ratio of fluoride to sulphide is in the range 1:1 to 1 : 20 and is preferably 1 : 4 and the composition which is presumed to contain the reaction product, viz.:- may be formed in situ within the polymer. The composition may be incorporated into the polymer in quantities of 0À1 to 5À0% preferably 0À2 to 2% by weight of the polymer, and may be incorporated in combination with antioxidants, U.V. absorbers, calcining agents, fillers, plasticizers and lubricants. Other known polymer stabilizing organotins, e.g. dibutyl-tindilaurate, dibutyl - tin - bis - (lauryl - mercaptide), and dibutyl - tin - bis - (mono 2 -ethylhexyl maleate) may be incorporated in the polymer in addition to the stabilizer according to the invention.
Patent GB-929274-A (GB)
Title: Steroids and their production
IPC: C07J43/00
Filed: 1959-04-12
Abstract: The invention comprises 10a -methyl-9a -steroids of the general formula IIIA shown in the Figure wherein R2 represents no double bonds or one or more double bonds at one <FORM:0929274/IV(a)/1> <FORM:0929274/IV(a)/2> or more of positions 1, 3, 4, 5 and 6, and R4 represents a keto, hydroxy, esterified hydroxy or etherified group and of the general formula IVA, wherein R2 and R4 have the above significance and -N< represents a secondary amine residue; and the preparation of the compounds of formula IIIA by brominating a 10a -methyl-9a -steroid of the general formula III shown in the Figure, wherein Q represents hydrogen and R2 and R4 have the above significance (if a 3-keto-D 4-system is present in the reactant bromination at the 2-position may also take place), and by brominating an enamine of the general formula IV in the Figure to form a dibromo-enamine of the general formula IVA, wherein QIV represents the secondary amine residue and QV represents hydrogen, and hydrolysing this compound with water, in which formulae R2 and R4 have the above significance.  Following the above processes, a 3-hydroxy group may be oxidised to a 3-keto group, for example, by means of manganese dioxide, or esterified.  In the example the compound of the formula XX shown in the Figure is prepared. Specifications 929,271 and 929,273 also are referred to.
Patent GB-1182636-A (GB)
Title: Process for Stabilisation of Caprolactone in the Presence of Formic Acid
IPC: C07D315/00
Filed: 1967-10-24
Abstract: 1,182,636. Stabilization of caprolactone in the presence of formic acid. UGINE KUHLMANN. 24 Oct., 1967 [25 Oct, 19661, No. 48250/67. Heading C2C. #-Caprolactone is stabilized in environments in which it is in the presence of formic acid by the addition of a salt of formic acid or a compound which will react with the formic acid present to form a formate in situ. The stabilization may be carried out during or after the formation of #-caprolactone. The added formates may be of ammonia, alkaline metals, alkaline earth metals, magnesium, zinc, aluminium or amines or the formates of these metals may be prepared in situ from the corresponding oxides, hydroxides, alcoholates, carbonates, bicarbonates or acetates. Stabilization may also be effected, after preparation of #-caprolactone, by addition of primary, secondary or tertiary amines or oxides of aliphatic and cycloaliphatic tertiary amines containing 1-15 carbon atoms, or, during the preparation, by addition of t-amines which are not easily oxidized or oxides or amines stable in respect of the peroxide compounds present in the environment. The stabilizer is added so that the ratio of formate ions to free formic acid is between 0À001 and 0À5, preferably 0À005 and 0À1.
Patent GB-1344893-A (GB)
Title: Meridian gyroscope
IPC: G01C19/38
Filed: 1971-10-18
Abstract: 1344893 Gyroscope BODENSEEWERK GERATETECHNIK GmbH 18 Oct 1971 [17 May 1971] 48275/71 Heading G1A In the gyroscope shown in which deviation of the gyroscope 14 from a position in the housing 12 in which the ribbon 16 is relaxed or neutral is corrected by the output from a photo-electric arrangement 22 responsive to a mirror 20 mounted on the ribbon, the output is applied to a torque producer 30, 32 via an amplifier 44 and is also stored in a capacitor Cl, a time controlled switch 46 (S1, S2) enabling rotation of housing 12 by a motor 34 in accordance with the stored signal in a sequence of stages in which the gyro itself and the housing are alternately adjusted. The housing correction arrangement includes negative feedback, by way of a tacho generator 40 and an integrating circuit R 2 , C 2 , applied over switch S2.
Patent GB-1121537-A (GB)
Title: An improvement in or relating to mowing machines
Inventor: BRADE JAMES NEVILLE
IPC: A01D34/38
Filed: 1965-11-13
Abstract: 1,121,537. Mowing machines. HARRISON McGREGOR & GUEST Ltd. 3 Nov., 1966 [13 Nov., 1965], No. 48301/65. Addition to 1,014,969. Heading A1F. A machine according to Specification 1,014,969 includes means for automatically locking oil within the hydraulic jack comprising a non-return valve which is urged into its closed position by pressure within the hydraulic jack when the supply of oil to the hydraulic motor is cut off and which is held open when oil under pressure is being supplied to the motor. As illustrated a hydraulic control mechanism 10 which is separate from the hydraulic jack, includes a spring urged ball 15 adapted to retain from the tractor hydraulic mechanism fluid under pressure within the jack. Fluid from the tractor hydraulic mechanism passes via port 11 into the hydraulic cutter bar drive motor inlet 12 to operate the motor and simultaneously causes piston 13 to displace the ball 15 to permit fluid in the jack to flow to sump via conduit 20, reduced portion 25 of slide valve 22 (operated by a Bowden cable 27 against spring 26) and exhaust portion 19, thereby lowering the cutter bar to its operative position. The hydraulic motor outlet 21 discharges into conduit 20. When valve 22 is moved to its other position thus preventing fluid flow between conduit 20 and port 19, fluid from the hydraulic motor outlet flows via displaced ball 15 to actuate the jack and to raise the cutter bar and machine. When fluid pressure in the jack reaches a certain level a relief valve 18 opens to exhaust fluid directly to sump. Cutting off the hydraulic supply causes spring 16 to urge ball 15 to engage its seat thereby retaining the cutter bar and machine in their raised position.
Patent GB-1495258-A (GB)
Title: Triazoles
IPC: A01N43/78
Filed: 1974-11-11
Abstract: 1495258 3-Trihalomethyl-1,2,4-triazoles COMMONWEALTH SCIENTIFIC & INDUSTRIAL RESEARCH ORGANIZATION 11 Nov 1974 [13 Nov 1973] 48784/74 Heading C2C Novel 3-trihalomethyl-1,2,4-triazoles of one of the following general Formulae Ia, Ib and Ic wherein X 3  is Cl 3 , F 3  or F 2 Cl; R<SP>1</SP> is hydrogen, alkyl or cycloalkyl of up to 12 carbon atoms which may be substituted by Cl or Br, or aryl or heteroaryl which may be substituted by C 1-4  alkoxy, C 1-4  alkyl, halogen or nitro; and R<SP>2</SP> is hydrogen, alkyl or cycloalkyl of up to 12 carbon atoms, or aryl or heteroaryl which may be substituted by C 1-4  alkoxy, C 1-4  alkyl, halogen or nitro, are prepared (a) by reacting CX 3 CONHNH 2  with R<SP>1</SP>C(Y)=NR<SP>2</SP>, wherein Y is OR, Cl or NH 3 +Cl<SP>-</SP> and R is C 1-4  alkyl, and heating the resulting acyl-amidrazone of the general formula CX 3 CONHNHC(R<SP>1</SP>)=NR<SP>2</SP> to form a product Ia; (b) by reacting R<SP>2</SP>NHNH 2  with CX 3 -C(NH 2 )=NH.HX<SP>1</SP>, wherein HX<SP>1</SP> is an acid, and reacting the resulting amidrazone of the general formula CX 3 C(=NH)NHNHR<SP>2</SP> with R<SP>1</SP>C(OR) 3  wherein R is C 1-4  alkyl, to form a product Ib; (c) by introducing a 2-substituent (R<SP>2</SP>), by direct substitution using a method known per se, into a compound Ia wherein R<SP>2</SP> is hydrogen to form a product Ic; (d) by hydrolyzing a compound Ia wherein R<SP>1</SP> is CCl 3 , R<SP>2</SP> is hydrogen and X 3  is F 3  or F 2 Cl, followed by decarboxylation, to form a product Ia wherein R<SP>1</SP> and R<SP>2</SP> are both hydrogen and X is F 3  or F 2 Cl; and (e) by reacting R<SP>1</SP>CONHNH 2  with H a NC(CF 3 )=NH.HX<SP>1</SP>, followed by heating the resulting acyl-amidrazone of the general formula R<SP>1</SP>-CO-NHNHC(CF 3 ) = NH in aqueous alkali, to form a product Ia wherein R<SP>2</SP> is hydrogen and X 3  is F 3 . Pesticidal compositions comprise, as active ingredient, a 3-trihalomethyl-1,2,4-triazole of the general Formula Ia, Ib or Ic, wherein X 3  is F 3  or F 2 Cl, together with a suitable carrier or diluent.
Patent GB-1484704-A (GB)
Title: Method and apparatus for supplying metal to an electrical induction melting furnace
IPC: F27B3/18
Filed: 1974-11-12
Abstract: 1484704 Charging metal melting furnaces CHASE BRASS & COPPER CO Inc 12 Nov 1974 [7 Dec 1973] 48836/74 Heading F4B Discrete particles of metal, e.g. chips or swarf, are fed to a melting furnace arranged so as to prevent emission of gases from the furnace except through a charging tube containing a column of charge resting on the molten metal in the furnace and of sufficient length to condense a major portion of the vapours given off. The charging tube 16 is mounted on a frame 18  secured above the mouth of a melting furnace, and discrete portions of metal, e.g. brass chips are fed down a shoot 48 while carbon granules are fed down a shoot 64. A ram 72 with depending fingers 94 pushes the charge into the molten metal, which is covered by a layer 34 of carbon granules. The lower part 30 of the charge tube is readily renewable, and the level of the melt in the furnace is maintained at a desired level by the use of a sloping tapping outlet 98. The feed shoots may have gates arranged to prevent egress of fumes, and vibrators to prevent sticking. Reducing or other gases may be fed to the charge tube, and the charge may comprise mixed carbon and metal or discrete layers.
Patent GB-997927-A (GB)
Title: Improvements in and relating to windings for transformers and reactors
IPC: H01F27/28
Filed: 1963-12-13
Abstract: 997,927. Transformers and inductors. BROWN, BOVERI & CO. Ltd. Dec. 13, 1963 [Dec. 17, 1962], No. 49280/63. Heading HIT. A supplementary winding which is co-wound with a portion of a transformer or reactor winding, is connected at both ends to points of different potential on the principal winding in regions remote from the cowound portion. In one embodiment, a supplementary winding 21 (Fig. 1) is co-wound with the first of a number of disc coils 11, 12, 13, 14 constituting the principal winding and is connected to the disc coils 12, 13 at points 2, 6 having a difference of potential exactly equal to the voltage induced in the supplementary winding. Similar connections are made in further embodiments in which the supplementary winding is co-wound with the entire length of either a first or several of a series of normally wound disc coils (Figs. 2 and a, not shown). A resistance may be included in one of the connections between the principal and supplementary windings.
Patent GB-1367779-A (GB)
Title: Container lining for alkaline cells
IPC: H01M50/119
Filed: 1971-10-25
Abstract: 1367779 Alkaline dry cells GATES RUBBER CO 25 Oct 1971 [28 Oct 1970] 49394/71 Heading H1B In an alkaline cell of the starved electrolyte type, corrosion between the anode, having an electronegative potential more negative than hydrogen, e.g. zinc, and a contact surface within the cell, e.g. the inner surface of a steel cell casing, is prevented by coating the surface with cadmium or cadmium amalgam, which material has a high hydrogen over voltage, i.e. a material requiring a current density not greater than 10<SP>-4</SP> amp./cm.<SP>2</SP> to give it a cathodic voltage of about -1À2 volts. Figure 1 shows a sealed cell with the electrode assembly removed. The steel casing 10 has welded thereto a steel lug 18 to which is connected the zinc anode, a cadmium amalgam coating 20 being provided on the lug and casing surface. The cathode is connected to a lug 16 on the cover 12. Other anode materials mentioned are Mg, Fe, In. Cathode materials may be Ag, Ni.
Patent GB-1439740-A (GB)
Title: Condiments dispensers
IPC: A47G19/24
Filed: 1974-11-15
Abstract: 1439740 Condiments dispensers KIN HIP METAL & PLASTIC FACTORY Ltd 15 Nov 1974 49476/74 Heading A4A A condiment dispenser comprises a hollow body 1, a container 4 having a cylindrical outer surface 3 forming a sliding fit in the body, a rib 6 in the hollow body against which the container abuts at one end, and a screw-threaded closure (8) for the container having a flange (9) adapted to bear against the said rib so that when the closure is screwed in tightly the container is locked in position in the hollow body. The other end of the container may be closed by a removable closure perforated to allow dispensing. This may slide into position and may be locked in place. As shown this is achieved by means of a lug and a bayonet recess. The container 4 and the screw-threaded closure (8) may be made of a synthetic plastics material and the body 1 of wood.
Patent GB-1479240-A (GB)
Title: Therosetting powder coatings
IPC: B29C37/00
Filed: 1975-12-03
Abstract: 1479240 Powder coating compositions UNION CARBIDE CORP 3 Dec 1975 [4 Dec 1974] 49676/75 Heading C3B A power coating composition comprises: (I) a copolymer having M.W. 2500-40,000 comprising 50-90% vinyl chloride, 1-25% glycidyl (meth)acrylate, 0-40% vinyl acetate and 0-40% of other ethylenically unsaturated monomer(s); (II) an epoxy resin plasticizer at 1-15% by wt. of I; and (III) a cross-linking agent present at 0À1-1 equivalent per combined epoxide equivalent of I and II. A typical I is an 80/10/10 vinyl chloride/vinyl acetate/glycidyl methacrylate terpolymer. II may be a diglycidyl ether of bisphenol A or an epoxidized soyabean oil. III may be adipic acid. A catalyst, e.g. a stannous salt of a C 2-25  carboxylic acid, may also be present. The powder may have a particle size of 1-75 microns. Reference has been directed by the Comptroller to Specification 1,437,663.
Patent GB-1485309-A (GB)
Title: Line by line dot matrix printer having a character slant control unit
IPC: G06K15/10
Filed: 1974-11-18
Abstract: 1485309 Printers SOC LOGABAX 18 Nov 1974 [7 Dec 1973] 49774/74 Heading G4H In a dot-matrix printer using a line of print wires movable substantially orthogonally to the print surface (e.g. by solenoids), corresponding outputs of a character generator control the respective print wires, selectively via or not via respective differing delay devices (e.g. shift registers of different lengths) according as the character is to be printed slanted or not.
Patent GB-1057049-A (GB)
Title: Metallurgical process and apparatus
Inventor: FRANK C SENIOR AND CHESTER E S
IPC: C21B13/08
Filed: 1963-12-17
Abstract: Iron ore, with or without carbonaceous reducing agent, is charged into a rotary kiln in which oxidizing conditions are maintained in the initial zone so that impurities such as sulphur are removed.  The ore is subsequently reduced by the addition of carbonaceous reductant directly to the kiln, while further carbonaceous reducing agent is added near the discharge end of the kiln in order that the product shall have at least sufficient carbon to promote complete metallization on subsequent smelting. The contents of the kiln do not at any time occupy more than 15% of the cross-sectional area of the kiln.  Air may be admitted at points along the kiln in order to maintain the desired conditions, while fines from the exhaust gases are introduced together with the reductant at an intermediate point in the kiln.  In one embodiment the kiln may discharge directly into a rotating hearth electric furnace. In another embodiment of the invention, natural gas or other gas containing a substantial proportion of methane is injected at points along the kiln and beneath the bed.