baber/WOPTO huggingface dataset:
Patent GB-985816-A (GB)
Title: Substituted cyclobutanones
IPC: C07D311/96
Filed: 1961-11-24
Abstract: The invention comprises compounds of the formula <FORM:0985816/C2/1> wherein R1 and R2 each represent H or a monovalent organic radical or together with the C atom on the cyclobutanone ring to which R1 and R2 are bonded, form an organic ring, R5 and R6 are selected from the same radicals as R1 and R2, and X is a group containing an N atom bonded to 3 carbon atoms, one of which is in the cyclobutanone ring. Thus X may be R3(R4)N-, where R3 and R4 may be a C1- 8 alkyl radical; or may together with the N may form a C4- 8 heterocyclic ring such as piperidino, methyl-piperidino, pyrrolidine, or 3-azabicyclo-[3.2.2] nonane; or may be C, H and O atoms which together with the N atom form a morphaline ring.  X may also be of the formula <FORM:0985816/C2/2> In the above formulae, R1 and R2 may be H, C1- 18 alkyl, aralkyl, e.g. benzyl, aryl such as phenyl or tolyl, thienyl, allyl, carbalkoxy with a C1- 8 alkoxy group, or together with the C in the cyclobutanone ring form a C5- 7 carbocyclic ring such as cyclopentane, cyclohexane, norbornane, norbornene, camphane and camphene, or form a heterocyclic ring of 5 carbons and oxygen such as pyran.  The cyclobutanone derivatives may be made by reacting a ketene R5(R6)C = C = O with an enamine XCH=CR1(R2). The reaction may be effected at temperatures in the range - 80 DEG  to 200 DEG  C., temperatures of 0 DEG  to 100 DEG  C. being preferred. If the ketene has an a -hydrogen atom or if the enamine has a b -hydrogen atom, the temperature must be kept below 50 DEG  C.  The reaction takes place with or without solvents.  Suitable solvents include esters, ethers, chlorinated aliphatic hydrocarbons, and aliphatic and aromatic hydrocarbons. Disubstituted ketene reactants are described in Specification 965,762. Enamines having no b -hydrogen atom can be prepared as described in Specification 951,110. The cyclobutanone compounds may be reacted with an alkaline metal hydride or sodium borohydride to form the corresponding amino-alcohol, which can be reacted with methacrylyl chloride to form the methacrylate ester. This latter may be copolymerized with acrylonitrile. Other uses of the novel compounds are described in Specification 985,815.
Patent GB-895838-A (GB)
Title: Cooling system
IPC: B64D13/00
Filed: 1960-12-07
Abstract: 895,838. Air supply systems. BENDIX CORPORATION. Dec. 7, 1960 [Feb. 9, 1960], No. 42176/60. Class 81 (2). [Also in Group XVIII] In order to cool a flying suit, liquid gas from a converter 14 is vaporized in a heat-exchange coil 42 and passed through a control valve 46 to a Venturi arrangement 50, where it entrains ambient air, and thence the mixture passes through a duct 52 to the interior of the suit. Air enters the casing 11 through orifices and is then directed over the coil 42 as it passes to the mixing device 50, being consequently itself cooled prior to mixing with the evaporated gas. The converter has the customary filling valve 22, pressure-actuated stop-valve 34, filling vent valve 26 and pressure relief valve 38.
Patent GB-1149872-A (GB)
Title: Method of repairing castings of haematite iron or other metal parts not readily weldable
Inventor: BUSCHMANN LOUIS
IPC: B23P6/04
Filed: 1966-09-21
Abstract: 1,149,872. Cutting and welding by fusion; repairing ingot moulds. CLUGSTON HOLDINGS Ltd. 21 Sept., 1966, No. 42192/66. Headings B3A, B3R and B3V. Metal parts, e.g. castings such as ingot moulds, are repaired by forming a cavity 7 in the cracked or otherwise defective part, forming holes 3 in the surface of the cavity and depositing weld metal 4 to fill the holes 3 and the cavity 7. The holes may be undercut and formed by an oxyacetylene torch or by a hollow steel or graphite arc electrode through which oxygen is blown. A steel weld deposit may be used to fill a cavity in cast iron.
Patent GB-1437603-A (GB)
Title: Electrostatic printers
IPC: G03G15/32
Filed: 1972-09-12
Abstract: 1437603 Electrostatic printer developer device EMI Ltd 30 Aug 1973 [12 Sept 1972] 42261/72 Heading G2H  A developer comprising toner particles suspended in a liquid is applied to an electrostatic image formed on a web 1 of dielectric paper by means of a wick 16 that forms one wall of a trough 17 into which the liquid developer is continuously pumped from a tank 15 at a rate sufficient to cause it to overflow back into the tank 15 thus maintaining a constant level in the trough 17. When the printer, and hence also the developer pump 18, is stopped the developer in the trough 17 is rapidly drained back into the tank 15 via the wick 16. The invention is applied to a printer of the kind in which electric charge dot patterns of alphanumeric characters are directly produced on the paper web 1 by a charging electrode assembly 2. The printer also includes a rotary blade 23 that co-operates with a blade 22 inset in a lid 21 of the printer housing to cut the paper web 1 when said blade 23 is rotated clockwise and to release the hold latches 25 have on the ends of the blade 22 to permit the lid 21 to be opened when rotated anti-clockwise. A blower 26 aids the stacking of the cut printed sheets on the lid 21.
Patent GB-1304723-A (GB)
IPC: F04C15/06
Filed: 1970-09-04
Abstract: 1304723 Rotary pumps EATON CORP 4 Sept 1970 [5 Sept 1969] 42444/70 Heading F1F In a hydraulic pump assembly 20 comprising roller vaines 74 acting against a substantially elliptical cam ring 54, intake passages 58, 60, which feed fluid to diametrically opposite portions of the pump via openings 111, 112 in cheek plates 114, 116, Fig. 8, have progressively increasing cross-sections in the direction of fluid flow. Fluid is fed to the inlet ports 96, 98 of the intake passages 58, 60 from a reservoir (28) Fig.1-3 (not shown) adjustably mounted on the pump assembly 20, and is delivered via openings 128, 130 in cheek plates 114, 116 to an annular discharge duct 134, and thence via passages 138, 142, Fig. 13, to a line 22 leading to a main load circuit e.g. a power-steering assembly, or, when the latter is shut off, via a relief valve (214) Figs.14, 15 (not shown) to a line 24, Fig.4 leading to a coder unit, the fluid returning to the reservoir via a filter assembly (32) Fig. 2 (not shown). The pump output is maintained substantially constant throughout its range by a flow control valve 148, which comprises a spool (162) subjected on one side to the output pressure in passage 138, and acted upon the other side by a spring 158 and the pressure of fluid supplied to space 160 by bores 200, 202 from the throat portion 192 of a convergent-divergent nozzle 188 mounted in passage 142. The fluid pressure in the throat portion 192 drops as the flow increases until the pressure of fluid in passage 138 overcomes the effect of spring 158 and the fluid pressure in space 160, and spool 162 moves to connect discharge passage 138 to intake passages 58, 60 via openings 170, 172, Fig.4. In order to operate with both clockwise and anti-clockwise drive assemblies, the cheek plates 114, 116, the cam ring 54 and the rotor assembly 66 may be removed from the housing and their positions on the drive shaft 68 reversed. To this end, a securing ring 260, Fig. 8, may be unscrewed and an end plate 146 removed. Leakage from the outlet openings 111, 112 in cheek plates 114, 116 is prevented by seals 144 which also serve to define pressure loading areas for the cheek plates. Rotation of the cheek plates 114, 116 and the cam ring 54 is prevented by a pin 240 Fig.4 engaging notches in the peripheries thereof and fixed at its ends in the pump housing and the end plate 146.
Patent GB-1469014-A (GB)
Title: Process for production of plus -2-amino-1-butanol
IPC: C12P41/00
Filed: 1974-09-30
Abstract: 1469014 2 - Amino - 1 - butanol DENKI KAGAKU KOGYO KK 30 Sept 1974 [28 Sept 1973] 42445/74 Heading C2C A method of making (+) 2-amino-1-butanol comprises (1) optically resolving an N-acyl-DL- 2-aminobutyric acid in an aqueous solution using the action of an acylase to obtain (A) an aqueous solution predominantly comprising L- 2-aminobutyric acid and a small amount of an N-acyl-D-2-aminobutyric acid and (B) an aqueous solution predominantly comprising an N-acyl-D-2-aminobutyric acid and a small amount of L-2-aminobutyric acid, (2) isolating crystalline L-2-aminobutyric acid from said solution (A) and to obtain a solution (C) from which said L-2-aminobutyric acid has been isolated, (3) esterifying said crystalline L-2- aminobutyric acid to form an L-2-aminobutyric acid ester, (4) reducing the L-2-aminobutyric acid ester to form (+)-2-amino-1-butanol, (5) crystallizing said N-acyl-D-2-aminobutyric acid from said solution (B) to obtain crystals comprising predominantly said N-acyl-D-2-aminobutyric acid and a small amount of said L-2- aminobutyric acid, and (6) racemizing said crystals comprising predominantly said N-acyl- D-2-aminobutyric acid to obtain an N-acyl-DL- 2-aminobutyric acid for recycle to step (1). Preferably (a) the acylase in step (1) is derived from pigs' kidneys or fungi and is immobilized on a carrier, e.g. an anion-exchange resin containing quaternized pyridine rings or cellulose, (b) the reduction step (4) is effected at a hydrogen pressure below 70 kg./cm.<SP>2</SP> and in the presence of more than 50% by weight of Raney nickel or more than 10% by weight of platinum based on the L-2-aminobutyric acid ester and (c) the racemization step (7) is effected at 110- 170‹ C. while maintaining the water content of the crystals at below 1% by weight or in the presence of an organic solvent which may form an azeotrope with water (e.g. a hydrocarbon, a straight chain or cyclic ether, an aliphatic mononitrile or dinitrile, or an ester).
Patent GB-1060026-A (GB)
Title: Combustion equipment for a gas turbine engine
Inventor: MOXON HARRY
IPC: F23R3/04
Filed: 1965-10-06
Abstract: 1,060,026. Gas turbine combustion chambers. ROLLS-ROYCE Ltd. Oct.6, 1965, No.42467/65. Addition to 1, 021, 588. Heading F1L. Gas turbine engine combustion equipment 15 constituting an improvement in the invention claimed in Specification 1, 021, 588 comprises outer and inner casings 11, 12 respectively, forming an annular duct 13 within which is mounted a series of angularly spaced flame tubes 20. Adjacent the upstream end of each flame tube 20 is located a plate 18 lying in a radial plane and having apertures (22), Fig. 3 (not shown), of varying size therein. The sides (23) of adjacent plates 18 abut so that the flow path for air from the engine compressor surrounding the flame tubes is blocked except through the apertures (22). The construction tends to equalize pressure differences in different parts of the duct 13 and is applicable also to annular flame tubes.
Patent GB-1130682-A (GB)
Title: Semiconductor devices
Inventor: FOX JOHN COLIN
IPC: C02F1/52
Filed: 1967-09-21
Abstract: 1,130,682. Semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd. 21 Sept., 1967, No. 42932/67. Heading H1K. Oxidized metallic contacts are formed on a semi-conductor body by applying a layer of metal to the surface of the body, separating the layer into individual contacts by photoetching, heating the layer and body in an inert atmosphere to bond the contacts to the body, and then heating the assembly in an oxidizing atmosphere to oxidize the exposed surfaces of the contacts. In one embodiment a silicon body having a passivating layer of silicon dioxide or silicon nitride is provided with aluminium contacts which engage the silicon through holes in the layer and overlie portions of the layer. The body is heated at 500‹ C. for 10 minutes in a dry nitrogen atmosphere to bond the aluminium to the silicon and to the passivating layer, and 20% oxygen is then introduced into the atmosphere after which heating is continued for a further 50 minutes. Gold or aluminium leads may then be bonded to the contacts.
Patent GB-953555-A (GB)
Title: Improvements in polymer production
Inventor: WILSON DONALD LEONARD
IPC: F16K31/44
Filed: 1960-12-14
Abstract: Acrylonitrile, if desired with at least one other copolymerizable monomer, e.g. methyl acrylate, styrene, itaconic acid, methallyl sulphonic acid, vinyl acetate and vinyl piperidine, is polymerized in solution in a liquid which is a solvent for the monomer and for the polymer and which contains a major proportion of dimethyl sulphoxide, in the presence of a free-radical initiator, e.g. an azo compound, and a reducing agent which is inert to the ingredients which form the mixture to be polymerized, e.g. thiourea dioxide, hydrazoisobutyric acid, ascorbic acid, d-xyloascorbic acid, erythroascorbic acid and araboascorbic acid, and salts thereof.  The dimethyl sulphoxide solvent may contain minor proportions of water, acetone, methylene chloride and inorganic salts, e.g. calcium chloride, which last is stated to increase the rate of polymerization from the resulting polymer solutions fibres may be spun which are less discoloured than fibres spun from a polymer prepared in the absence of a reducing agent.
Patent GB-965785-A (GB)
Title: Transesterification of aryl phosphites with organic mercaptans
IPC: C07F9/6571
Filed: 1961-12-01
Abstract: An organothiophosphite of the general formula R11S.P-(XR1)2 is obtained by transesterifying a triester of phosphorous acid of the formula RO-P-(XR1)2 with an aliphatic, cycloaliphatic, araliphatic or heterocyclic mercaptan, X being oxygen or sulphur, R1 being an aryl, substituted aryl or aliphatic radical when the atom X linking it to phosphorus is oxygen or is an aliphatic, araliphatic, cycloaliphatic or heterocyclic radical when the atom X linking R1 to phosphorus is sulphur or the two radicals R1 may together form a cyclic linkage containing two carbon atoms in the ring together with the two oxygen or sulphur atoms and the phosphorus atom, R11 begin an aliphatic, araliphatic, cycloaliphatic or heterocyclic radical and R being an aryl or substituted aryl radical. Also, an organothiohydrogen phosphite of the formula: <FORM:0965785/C1/1> is obtained by transesterifying a diester of phosphorous acid of the formula: <FORM:0965785/C1/2> with an aliphatic, cycloaliphatic, araliphatic or heterocyclic mercaptan, R being an aryl or substituted aryl radical, X an oxygen or sulphur atom, and R1 being an aryl, substituted aryl or aliphatic radical when X is oxygen or being an aliphatic, araliphatic, cycloaliphatic or heterocyclic radical when X is sulphur. The two radicals R1 may be the same or different. The transesterification reaction is preferably carried out in the presence of a basic catalyst, e.g. an alkali metal, alkali metal hydride, alkali metal sulphide or a mixture thereof, and may be carried out at room temperature or below or if desired the reaction mixture may be heated to remove either the phenolic product or the thiophosphite product formed.  Preferred temperatures are between 70 DEG  and 150 DEG C. Atmospheric, super-atmospheric or sub-atmospheric pressures may be employed. A large number of phosphite esters suitable for use as starting materials is specified including simple triaryl phosphites, haloaryl phosphites, mixed arylhaloaryl phosphites, thiophosphites such as 0,0-diphenyl butyl thiophosphite, O-phenyl dibutyl dithiophosphite, O-cresyl ethylene dithiophosphite, phenyl ethylene phosphite and phenyl diallyl phosphite. Several diesters of phosphorous acid suitable for use in the second type of reaction are also specified, including dicresyl hydrogen phosphite, bis(trichlorophenyl) hydrogen phosphite, O-phenyl butyl monothiohydrogen phosphite and O-cresyl allyl monothiohydrogen phosphite. Specified mercaptans include alkyl mercaptans, benzyl mercaptans, alkylene dithiols, e.g. ethanedithiol, p-nitrobenzyl mercaptan, furfuryl mercaptan and allyl, methallyl and crotyl mercaptans.  Several examples are given and the products generally are useful as additives for lubricants and fuels, as stabilizers for polyolefines and as cotton defoliants.
Patent GB-1524854-A (GB)
Title: Semiconductors
IPC: H01L21/40
Filed: 1975-10-21
Abstract: 1524854 Integrated circuits GENERAL ELECTRIC CO 21 Oct 1975 [1 Nov 1974] 43130/75 Addition to 1493829 Heading H1K In a semiconductor body having islands 24 laterally isolated by a grid formed by the temperature-gradient-thermomigration method of the parent Specification 1,493,829, a further region 30 of the same conductivity type as the grid'regions 20, 22 is provided across the entire lower surface 16 of the body so that access [to the islands 24, within which devices such as diode 32 and transistor 34 are provided, can be had only from the upper surface 14. The region 30 is preferably formed, e.g. by diffusion or epitaxy, before thermomigration of the grid regions 20, 22. The remaining disclosure of the Specification is identical to that of the parent case.
Patent GB-1223826-A (GB)
Title: Fluorine and silicon containing polycondensates, process for their preparation and their use as oil- and water-repellent agents
IPC: D06M15/657
Filed: 1969-08-29
Abstract: 1,223,826. Organosilicon polymers and compounds. FARBWERKE HOECHST A.G. 29 Aug., 1969 [30 Aug., 1968], No. 43203/69. Headings C3S and C3T. [Also in Division D1] Polycondensates have the formula in which R f  represents a C 6-12  perfluoroalkyl radical, R is -O-O or a C 1-4  alkyl radical, n = 1 to 4 and z = 10-100. I may be prepared by reacting with allyl alcohol at 20-120‹ C. to yield a diurethane which is further reacted at 50-120‹ C. with R<SP>1</SP>SiCl 2 H in which R<SP>1</SP> is Cl or a C 1-4  alkyl radical (e.g. methyldichlorosilane) with a Pt compound (e.g. hexachlorophalinic acid) as catalyst. The resultant adduct is hydrolysed with water at 20-100‹ C. to yield I. A tertiary amine catalyst may be used in the reaction with allyl alcohol. The polymers are useful in treating textiles to render them oil and water repellent.
Patent GB-1006793-A (GB)
Title: Means for displaying information
IPC: G09F7/12
Filed: 1961-12-05
Abstract: 1,006,793. Changeable Indicator. G. H. W. KENNEY. March 5, 1963 [Dec. 5, 1961], No. 43589/61. Heading G5C. Strips or labels 5 bearing information are adhered to an opaque, translucent or transparent panel 1, having guide markings 2 thereon, and are covered by a transparent overlay sheet 3 having opaque regions 4 of such breadth and pattern as to cover the markings 2, and the edges of labels 5, but not obscure the information on the labels. The sheet 3 may be foldably attached to the panel I along one edge by a flexible joining strip 6. The labels 5 may be self-adhesive plastic or coated on one side with adhesive and are readily replaceable. The arrangement as shown may be fitted within a box or frame and illuminated from behind by natural or artificial means, possibly intermittently. The regions 4 may be painted on the underside of sheet 3 as shown in matt paint, and may not extend all over sheet 3 but leave clear spaces for permanent information, printed on the sheet 3 or the panel 1. The panel 1 and sheet 3 may be made of polystyrene, polyvinylchloride or polymethylmethacrylate.
Patent GB-1235213-A (GB)
Title: Process for the production of polyurethane resins
Inventor: WAGNER KUNO
IPC: C08G18/42
Filed: 1968-09-13
Abstract: 1,235,213. Polyurethane coating. FARBENFABRIKEN BAYER A.G. 13 Sept., 1968 [18 Sept., 1967], No. 43593/68. Heading B2E. [Also in Division C3] Substrates eg. wood, metal (e.g. steel) or glass may be coated with lacquer solutions of polyurethanes prepared by reacting a polyhydroxy compound, optionally a chain lengthening agent, and a polyisocyanate which is aliphatic, cycloaliphatic or araliphatic or an isocyanurate containing copolymer of one of these polyisocyanates with an aromatic polyisocyanate, the polyisocyanate containing an N:N-dialkyl substituted semicarbazide, carbazic ester or carboxylic acid hydrazide group, and a biuret, urethane, acylated urea or isocyanurate group at least once in the molecule. The polyisocyanates are suitably used in the form of 5 to 50% mixtures with other polyisocyanates which do not contain the semicarbazide, carbazic ester or acid hydrazide groups. Suitable polyhydroxy compounds are those polyesters and polyethers used conventionally in the art, whilst glycols and diamines may be used as chain lengthening agents. In typical Examples, wood, steel and glass is coated with solutions in organic solvents of a reaction product of a polyester derived from phthalic acid (or its anhydride) and trimethylolpropane and polyisocyanates, typical of which are those of the formula:
Patent GB-1124355-A (GB)
Title: Portable self-contained infusion device
IPC: F04B43/12
Filed: 1965-10-15
Abstract: 1,124,355. Surgical infusion device. UNITED STATES CATHETER & INSTRUMENT CORP. 15 Oct., 1965 [16 Oct., 1964], No. 43846/65. Heading A5R. [Also in Division Fl] A self-contained portable infusion device comprises a case containing an arcuate fixed segment of flexible tubing, rollers rotatably mounted and positioned to close the bore of the tubing, means for rotating the rollers along the segment of tubing, a reservoir for fluid connected to one end of the tubing, and fluid outlet means at the other end of the tubing for atachment, for example via a catheter, to a body to be infused with fluid which is passed along the tubing from the interior to the exterior of the case under pressure caused by rotation of the rollers along the segment of tubing. In the embodiment of the invention illustrated in Figure 3, the segment of tubing 24 is retained on the interior surface of an arcuate inflexible track member 23 which is positioned by studs 29, retaining screw 31 and annular ridge 62 surrounding an aperture in case 50; the tubing, one end of which is connected to reservoir 53, is further located where it passes through the wall of the case by grommet 32. Mounted by spindles 47 on the periphery of a rotor to extend outwardly therefrom are rollers 22, the periphery of the rotor being parallel to and spaced from the track member. The rotor is drivable by clockwork means including a mainspring operatively connected to the rotor by a driving mechanism the speed of which is controlled by an associated clock escapement mechanism. The means for driving the rotor may include a ratchet mechanism to permit manual rotation of the rotor in order to prime or flush the tubing; as illustrated, a priming key may be inserted through aperture 84 in plate 86 to engage with priming gear 48 which is mounted on spindle 61 upon which also is mounted the rotor and mainspring. The device additionally may comprise such a priming key and also a winding key for winding the mainspring. The means for driving the rotor may be such that the rotor makes one complete revolution per hour to give slow and continuous delivery of fluid, for example a parenteral fluid; the volume of fluid passing through the tubing may be adjusted, for example by suitable choice of the speed of the clock mechanism and/or of the bore of the tubing, to between 3 and 10 millilitres per day.
Patent GB-986859-A (GB)
Title: Improvements in or relating to axle box and axle assemblies
IPC: B60B37/00
Filed: 1962-11-20
Abstract: 986,859. Bearings. SOC. GENERALE ISOTHERMOS. Nov. 20, 1962 [Nov. 27, 1961], No. 43949/62. Heading F2A. In a device for reconditioning the flanged tyres of rolling stock wheels, an axle 1 has a cylindrically-shaped extension 3 which passes through a central bore 12 formed in a cover 4, seals 5 being provided to prevent ingress of foreign matter. The extension 3 has a hole 6 therein for receiving a centre of a lathe. A detachable cover 7, secured to the main cover 4, serves as a protection against ingress of foreign matter. The extension 3 may be threaded at 10 for engagement with an abutment-head 2, having a tapped hole 11 therein. In an alternative construction, the extension 3 is integral with the abutment-head 2.