baber/WOPTO huggingface dataset:
Patent GB-1365563-A (GB)
Title: Rotary piston compressors with liquid injection
IPC: F04C18/12
Filed: 1971-09-30
Abstract: 1365563 Rotary positive-displacement machines ATLAS COPCO A B 30 Sept 1971 [1 Oct 1970] 45648/71 Heading F1F In a compressor having co-operating rotors 7, 8 with teeth 49, 54, parallel shafts 9, 10 and synchronizing gears 12, cooling liquid such as oil or water is injected into clearance spaces at the ends of the rotor 8 through nozzles 51 disposed in each casing end-wall portion 2, 3 adjacent an outlet port 22. Liquid may also be injected through a nozzle 46 in an inlet-port portion 19, nozzles 48 in the end-wall portions and nozzles 57, 58 communicating with a liquid-cooling passage 23 in a casing central-portion 1. To allow trapped working-fluid and liquid to escape the ends of the tooth 54 may be bevelled or rounded at 55. Leakage liquid escapes from sealing rings 13 through passages 26, 27. Shaft bearings 11b are mounted in resilient portions 35 of the end-wall portion 3.
Patent GB-1508567-A (GB)
Title: Optical communications systems
IPC: H04B10/272
Filed: 1975-03-27
Abstract: 1508567 Light guides SIEMENS AG 27 March 1975 [28 March 1974] 45973/77 Divided out of 1507894 Heading G2J An optical communications system comprising an optical transmitter coupled to a plurality of light receivers by a plurality of waveguides, and means for focussing the transmitter output on to a hologram having an interference pattern which deflects the light to form a plurality of components which are directed into the respective entry surfaces of the waveguides.
Patent GB-1247892-A (GB)
Title: Semiconductor memory device
IPC: H01L21/8247
Filed: 1968-09-27
Abstract: 1,247,892. Field effect memory devices. R.C.A. CORPORATION. 27 Sept., 1968 [17 Oct., 1967], No. 45991/68. Heading H1K. A field effect semiconductor device exhibiting a memory comprises a layer of insulation not more than 25 Š thick, which is less than the tunnelling distance, disposed on a semiconductor body and overlain by a charge storage layer. One embodiment consists of an IGFET with a 25 Š thick layer of silica over the channel and a silicon nitride charge storage layer on top of it, with a gate electrode disposed on the nitride. Alternatively the nitride is replaced by a metal or polycrystalline silicon layer insulated from the gate electrode by a layer of silica. In another embodiment an annular gate structure of either of the above types is disposed over the PN junction of a planar diode. The IGFETs exhibit two stable valves of threshold voltage according to whether a positive or negative write in pulse was applied to the gate and the gated diode exhibits two stable valves of reverse breakdown voltage and capacitance. The theory of operation is discussed.
Patent GB-1401464-A (GB)
Title: Aerial transport means
IPC: B61B12/02
Filed: 1972-10-09
Abstract: 1401464 Rope railways POHLIG-HECKELBLEICHERT VEREINIGTE MASCHINENFABRIKEN AG 9 Oct 1972 [13 Oct 1971] 46430/72 Heading B7L A ropeway conveyer comprises a carrying cable 1 along which run rollers 5 supporting load carrying tubs, the tubs being driven by a traction cable 2, and being pivotable for discharge of the load therein either about a longitudinal axis (as seen on the left in Fig. 2) or by releasing couplings 8 at one end of the tubs (as seen on the right in Fig. 2). Releasing devices 11 are provided for tipping the tubs and a ramp 12 is provided for return of the tubs to their coupled position. In an alternative embodiment (Fig. 5) twin tubs 22 are provided supported from rollers 24 running on a carrying cable 20 and having clamps 23 for attachment to traction cables 21. The tubs 22 may be mounted for pivotal movement about an axis transverse to the cable 90 for traversing vertical or inclined sections of track.
Patent GB-1179657-A (GB)
Title: Fuel Vapour Emission Control System
Inventor: DONALD JOHN ROBERT
IPC: F02M25/00
Filed: 1968-10-02
Abstract: 1,179,657. Motor vehicle fuel tanks. FORD MOTOR CO. Ltd. 2 Oct., 1968, No. 46776/68 Heading B7H. [Also in Divisions B8 and Fl] A fuel vapour emission control system for a motor vehicle powered by an internal combustion engine comprises a fuel tank 14 having a sealed filler cap 16, a vent tube 17 from the tank and a liquid trap 19 which collects fuel that condenses in the tube 17. The latter includes a small bore portion 18 between the tank 14 and trap 19 and a larger bore portion 20 connecting the trap 19 to the air cleaner 12 of a downdraught carburetter 13 supplying to the engine 10 fuel pumped from tank 14. The bottom wall 21 of the air cleaner 12 is formed with a well 22 disposed within the filter element 27. The vent tube 17, a carburetter float chamber vent 23 and a crankcase breather 24 are all connected to the well 22. The latter includes a flame trap 28 in the form of a gauze or fine wire mesh to prevent ignition of fuel vapour in tube 17 in the event of an engine back-fire. The liquid trap 19 is disposed at the lowest point of the tube 17 in front of the toeboard 25 of the vehicle body 11.
Patent GB-1122380-A (GB)
Title: Process for the preparation of mixed oxides
IPC: C01G1/00
Filed: 1965-11-04
Abstract: A process for the preparation of mixed oxides of formula AxByOz, where A is one or more alkali metals, alkaline earth metals, rare earth metals, Pb, Zn, Cd or Ba, B is one or more metals selected from the group comprising Al, Sn, Fe, Ti, Zr, Hf, Mo, W, Sb, and x, y and z are integers, comprises (a) dissolving at least one alkoxide of each metal in an anhydrous organic solvent in the stoichiometrically necessary ratio to give the proportion x:y desired in the end product; (b) recovering a mixture of the alkoxides from the solvent; and (c) subjecting the recovered mixture to pyrolysis. The alkoxide of one metal may first be dissolved in the solvent and the other metal then added; this gradually dissolves with the formation of the alcoholate and the evolution of hydrogen. The solvent may be acetonitrile, dimethylformamide, dioxane, benzene, toluene and all alcohols of less than 11 carbon atoms.  The mixed alkoxide may be recovered from solution by distilling off the solvent or by the addition of a precipitant, e.g. NH3.  The alcohol group may be removed by hydrolysis with steam. Pyrolysis may be carried out at a temperature of 400 DEG  to 800 DEG  C.  Specific oxides referred to include BaTiO3, MgTa2O9, MgTa2O6, ZnAl2O4, Zn2TiO4, BaFe12O19 and Li2ZrO3 Oxides stated to have X-ray diagrams characteristic of strontium titanate and calcium zirconate, and an oxide having an X-ray diagram identical with that of calcium titanate but which contains 5 mol. per cent of barium and 95 mol. per cent of calcium as metal A, are also referred to.ALSO:A catalyst comprises a carrier such as silica gel, kieselguhr and clays treated with a mixed oxide of formula Ax By Oz where A is one or more metals selected from the group comprising alkali metals, alkaline earth metals, rare earth metals, Pb, Zn, Cd and Ba, and B is one or more metals selected from the group comprising Al, Sn, Fe, Ti, Zr, Hf, Mo, W and Sb, and x, y and z are integers. Specific oxides referred to include Ba Ti O3, Mg Ta2 O9, Mg Ta2 O6, Zn Al2 O4, Zn2 TiO4, Ba Fe12 O19 and Li2 Zr O3. Oxides stated to have X-ray diagrams characteristic of strontium titanate and calcium zirconate, and an oxide having an X-ray diagram identical with that of calcium titanate but which contains 5 mol% of barium and 95% mol% of calcium as metal A. are also referred to.  The catalyst is made by treating the carrier with a mixed alcoholate of the metals A and B and subjecting the treated carrier to pyrolysis.
Patent GB-1318944-A (GB)
Title: Hexahydrobenzindole derivatives
Inventor: BORMAN G
IPC: C07D209/90
Filed: 1970-10-05
Abstract: 1318944 Benz[cd]indole derivatives SANDOZ Ltd 5 Oct 1970 [24 Oct 1969 6 July 1970(2)] 47159/70 Heading C2C The invention comprises compounds of formula and their pharmaceutically acceptable acid addition salts, wherein (a) X is H, Me, MeS or halogen, (Y is H) or (b) X is H and Y is Me, or (c) X=Y=Cl. In examples, these compounds are prepared by reacting with (CH 2 NH 2 ) 2  the corresponding 1 - (S - methylisothioureido)- benz[cd]indoles (HI salts), which in turn are made from the corresponding thioureas (derived from the amines with PhCONCS, followed by hydrolysis of the N-benzoylthioureas) with MeI. The amines are made by LiAlH 4  reduction of the N-nitrosobenz[cd]indoles (derived from the N-unsubstituted benz[cd]indoles with HNO 2 ). Intermediates otherwise prepared are 1-benzoyl- 1,2,2a,3 - tetrahydro - 8 - methylbenz[cd]indol- 5(4H) - one; 1 - acetylhexahydrobenz[cd] indole substituted in the 6-position by NO 2 , NH 2 , SMe, CN or CHO; 7-methylindole substituted in the 3-position by CH 2 N<SP>+</SP>Me 3 I<SP>-</SP>, CH 2 OH(CO 2 Et) 2 , CH 2 CH(CO 2 H) 2  or CH 2 CH 2 CO 2 H; 2-(7-methyl- 3-indolinyl)propionic acid; and 2-(1-benzoyl-7- methyl-3-indolinyl)propionic acid and its acid chloride. Therapeutic compositions comprise compounds of the above formula, which are vasoconstrictors, have a sedative effect on the C.N.S. and exhibit a reserpine antagonism. Administration may be by topical application to the mucous membrane, or otherwise by unit dosages.
Patent GB-1404857-A (GB)
Title: Fluid flow restrictor
IPC: F16K17/34
Filed: 1972-10-12
Abstract: 1404857 Regulating fluid-flow SANDERS ASSOCIATES Inc 12 Oct 1972 [12 Oct 1971] 47195/72 Heading G3H A restrictor, which can be incorporated in a flow conduit to define a flow port the area of which increases as the flow therethrough increases in order to achieve a pressure drop which is substantially proportional to the rate of flow over a considerable range, comprises a thin, resilient, plate-like member 13 which has portions 15 cut away to define a plurality of vanes 16, and which has a central orifice 14. The vanes may extend to the central orifice as shown or may be separate from it and of rectangular or triangular shape, Figs. 4 and 5 (not shown).
Patent GB-1022540-A (GB)
Title: Improvements in and relating to electric thermal storage heaters
Inventor: GREEN JOHN GILBERT
IPC: F24H7/00
Filed: 1962-12-14
Abstract: 1,022,540. Resistance heater elements. HEATSTONE Ltd. Dec. 19, 1963 [Dec. 14, 1962], No. 47276/62. Heading H5H. In a thermal storage heater having stretched resistance wire coils arranged in grooves in the storage blocks, a disc or like member is attached to the end of the coil to stop it pulling through the groove. In one embodiment the wire at the end of the resistance coil is threaded through a hole in a ceramic disc, and the end folded back on itself and a metal compression crimp applied adjacent to the disc. Alternatively, the disc may be replaced by a conical wedge to jam in the end of the groove.
Patent GB-1414623-A (GB)
Title: Valves
IPC: E03C1/10
Filed: 1971-10-11
Abstract: 1414623 Valves J M SHEARDOWN 11 Jan 1973 [11 Oct 1971] 47324/71 Heading F2V A non-return valve for preventing contamination of a fluid supply source under suction conditions includes a vacuum-relief valve to guard against mal-functioning of the non-return valve. The non-return valve comprises a ball 4, of resilient material of a lower specific gravity than the fluid controlled, and a seat 5. The vacuumrelief valve comprises a ring member 16, which may be of neoprene, covering apertures 15 leading to the atmosphere. Adjacent apertures may be connected by surface grooves 17 to improve the sealing action. In an alternative embodiment the roles of the valve members are reversed, the non-return valve consisting of a ring member similar to member 16 and the vacuum-relief valve consisting of a resilient ball member of a material having a higher specific gravity than the fluid controlled.
Patent GB-1451583-A (GB)
Title: Apparatus for compensating long term variations in electrical signals
IPC: G01D3/02
Filed: 1974-11-04
Abstract: 1451583 Optical data reader INTERNATIONAL BUSINESS MACHINES CORP 4 Nov 1974 [26 Dec 1973] 47511/74 Heading G4M [Also in Division H3] Gradual changes in an information signal carrying one-of-two-level information signals are compensated by controlling the signal source to have one of two pre-set levels depending upon the current state of the information signal. In a photoelectric document detector, the output of the photo-transistor PS is fed via an inverter D1 to a differential amplifier D3 where it is compared with a reference level r to adopt one of two possible output levels K. The output of inverter D1 is compared with the output a reference level constituted by a weighted average of levels r amd K, to give an output which controls the brightness of the light emitting diode LED. A capacitor C1 prevents diode LED responding to information signal variations. In another embodiment, Fig. 2 (not shown) the signal source is a Hall generator and the control signal is fed back to an auxilliary electrode (14).
Patent GB-987466-A (GB)
Title: Asymmetrical chromium-containing monoazo dyestuffs
IPC: C09B45/16
Filed: 1962-12-18
Abstract: The invention comprises asymmetrical chromium complexes of formula <FORM:0987466/C4-C5/1> wherein K is a cation, I is the residue of a monoazo dye and II is the residue of a monoazo dye different from I and of formula <FORM:0987466/C4-C5/2> wherein R is an o-phenylene radical, R1 is an alkyl radical and R2 is a phenyl radical.  The complexes are prepared by reacting a 1:1-chromium complex of a dye I with an approximately equimolar proportion of dye II in the presence of formamide or by treating a mixture of dyes I and II with a chromium-yielding agent.  The dye complexes may be used to colour nitrogenous materials particularly wool in orange, green and brown shades. The intermediate dyes I and II are prepared by the usual coupling procedure; the dyes (I) being obtained from diazotized o-hydroxy- or methoxy-anilines coupled with methylsulphonylamino - naphthols, 41 - hydroxynaphtho-(21,11:4,5) -oxathiol-5-dioxide, beta-naphthol, 1-phenyl - 3 - methyl - 5 - pyrazolone or 1-phenyl-3-methyl-5-aminopyrazole.  The preparation of the complexes is described in examples and a table.  Specification 987,467 is referred to.
Patent GB-1174718-A (GB)
Title: Improvements relating to apparatus for Lifting Vehicles
Inventor: RAWLINS GRAHAM CLENTON
IPC: B66F7/28
Filed: 1968-10-08
Abstract: 1,174,718. Garage lifts. G. C. RAWLINS. 8 Oct., 1968, No. 47730/68. Heading B8H. Vehicle-lifting apparatus for use in association with an inspection pit comprises a beam 12 which is provided with wheels 6 running along the top of the pit walls 4 and with a doubleacting hydraulic jack 16, 18. The jack is slidable along the length of the beam and is provided with a rubber head 20 for engagement with a vehicle to be lifted. The rollers 6 may alternatively run along ledges formed in the side walls of the pit. Guide rollers 26 are provided to prevent skewing of the beam as it is moved along the pit.
Patent GB-1356892-A (GB)
Title: Process for the manufacture of dialkylphosphine oxides
IPC: C07F9/53
Filed: 1972-10-17
Abstract: 1356892 Dialkyl phosphine oxides KNAPSACK AG 17 Oct 1972 [12 Nov 1971] 47815/72 Heading C2P Compounds of formula RR<SP>1</SP>P(O)H where R and R<SP>1</SP> are C 1 -C 3  alkyl, are prepared by oxidizing a hydrohalic acid solution of a dialkyl phosphine with an oxidant having an oxidizing power greater than that of atmospheric oxygen, the oxidant being added substantially in the stoichiometric proportions necessary to effect the oxidation. The oxidation may be carried out at temperatures between 0 and 100‹ C. The dialkyl phosphine solution may have a concentration between 1 and 50 weight per cent and may be prepared by diluting a concentrated solution of dialkyl phosphine in concentrated hydrohalic acid with water or a solvent miscible with water and substantially inert with respect to the components of the solution. The dialkyl phosphine solution may contain between 1 and 40 weight per cent of acid. The hydrohalic acid is preferably hydrochloric acid and the oxidant is preferably chlorine or aqueous hydrogen peroxide.
Patent GB-962424-A (GB)
Title: Improvements in or relating to the manufacture of headed articles having internal and external torque engaging means
Inventor: CARLSON RAYMOND HAROLD
IPC: B21K1/46
Filed: 1962-12-19
Abstract: 962,424. Forging; extruding. TEXTRON INDUSTRIES Inc. Dec. 19, 1962, No. 48058/62. Headings B3H and B3P. [Also in Division F2] A headed metal article, such as a cap screw, having a head 16, Fig. 4, with a polygonal socket 20, axially extending wrench engaging serrations 18 and a washer flange 22, is made by forwardly extruding a cold cylindrical workpiece within a die 30, Fig. 6, to form a reduced shank, placing the shank in a die 50, Fig. 7, and applying axial pressure by a punch 58 to form the serrations 62, and whilst still in the die advancing a punch 70, Fig. 8, having a socket forming punch 76 over the head to form the socket and the washer. In die 30, Fig. 6, the workpiece is extruded by punch 42 through a die throat having a definite radius R; an ejector pin 44 is provided. In die 50, Fig. 7, the further extrusion of the shank throat 54 takes place whilst the serrations are being formed. Punch 70 has a serrated cavity 74 which encloses the head during piercing of the socket and upsetting of the flange 72. An ejector pin 80 is provided.
Patent GB-1245859-A (GB)
Title: Anion exchange copolymers
Inventor: CHABERT HENRI
IPC: C08J5/22
Filed: 1969-09-30
Abstract: 1,245,859. After-heated propylene-styrene sequence copolymers. RHONE-POULENC S.A. 30 Sept., 1969 [1 Oct., 1968], No. 48122/69. Heading C3P. Crystalline styrene-propylene block copolymers are reacted with chloromethylating agents and then with a tertiary amine to produce a copolymer having quarternary ammonium groups attached via methylene to at least some of the phenyl nuclei of the styrene residues. Trialkyl amines, alkylalkanolamines, pyridine and N-mono- and N,N<SP>1</SP>-di-alkyl piperazines may be used as amines, the latter compounds in some cases promoting cross-linking. In examples, propylene-styrene copolymers prepared using TiCl 3 /Al(i-C 4 H 9 ) 3  are reacted with CH 3 .OCH 2 - Cl/ZnCl 2  and then with (CH 3 ) 3 N or N,N<SP>1</SP>- dimethylpiperazine; membranes are formed from the resulting copolymers by pressing between platens in an hydraulic press.
Patent GB-1505658-A (GB)
Title: Externally mounted vehicle rear-view mirror
IPC: B60R1/06
Filed: 1974-11-07
Abstract: 1505658 Rear-view mirrors COMBINED OPTICAL INDUSTRIES Ltd 6 Nov 1975 [7 Nov 1974 18 Aug 1975] 48255/74 and 34303/75 Heading B7J [Also in Division G2] A vehicle external rear-view mirror comprises a mounting arm 7 pivotally connected to a backing plate 5, a rubber ring frame 6 connecting together the plate 5, a one-piece plastics moulding reflector element 1 and a transparent glass sheet 4 protecting the planar viewing surface 2 of the element 1, wherein the rear surface of the element 1 is made reflective by metallizing and coating with protective paint, the reflecting surface of the element 1 having a main planar portion 3a, which in use is positioned adjacent a vehicle, and an outer generally aspheric or acylindrical surface portion formed by linear prisms 3b whose prism angles decrease as the prisms are positioned further outwardly. The portions 3b are arranged so that the separate images produced are integrated in the eye of the viewer so that the mirror reflector 1 appears to have a plane portion at the left side and a convex mirror portion at the right side which curved portion does not cause any apparent discontinuity of image. The field of view of the reflector is thus increased outwardly of the rear-view mirror. In another embodiment the reflector element is also formed with in use upper and lower acylindrical portions to extend the field of view in the vertical direction.
Patent GB-1254919-A (GB)
Title: Spot-type disc brake
IPC: F16D65/095
Filed: 1969-10-01
Abstract: 1,254,919. Disc brakes. ALFRED TEVES G.m.b.H. 1 Oct., 1969 [4 Oct., 1968], No. 48285/69. Heading F2E. A spot type disc brake comprises a two part, non-rotatable, U-shaped housing 1 straddling a brake disc, the housing being formed with a radially extending opening 10 for the reception of brake pads 11, 12. The two parts of the housing are held together by screws 4, 5, 6, 7, one at least of which traverses the opening 10. The screw(s) 6, 7 which traverse the opening 10 is/are perpendicular to the brake disc plane and passes/pass through recesses in the back plates of the brake pads to form guides therefor. In a further embodiment one screw only passes through the opening, the screw in the opening being surrounded by a sleeve on which is mounted the brake pads (Fig. 2, not shown).
Patent GB-1046440-A (GB)
Title: Improvements relating to laminated plastics
Inventor: PERRY JOHN FREDERICK
IPC: B29C63/48
Filed: 1963-12-06
Abstract: A resin impregnated laminate is made by forming an assembly comprising a core of one or more fibrous sheets impregnated with phenol- or phenol-urea-formaldehyde urea resin an intermediate adhesive layer comprising an aminotriazine aldehyde or substituted aminotriazine aldehyde aldehyde resin, and an outer protective coating of a fluorine containing polymer, and curing the assembly by heat and pressure.  The protective coating may be polyvinyl fluoride, polyvinylidene fluoride, P.T.F.E., or polyfluorochloroethylene.  it may be transparent and contain an organic compound capable of absorbing ultra-violet light or may contain a pigment.  The adhesive layer may be a fibrous sheet impregnated with resin and may be decorative or overlying a decorative sheet, or it may be coated on to the protective layer or core surface or both.  It may include other resins and a plasticizer.  Aminotriazines referred to are melamine, methyl melamine, butyl melamine and benzoguanamine and as aldehyde-formaldehyde.  In an example a sheet of paper impregnated with melamine formaldehyde is superimposed on a stack of sheets of Kraft paper impregnated with phenol-formaldehyde and a sheet of polyvinyl fluoride pigmented with titanium dioxide laid thereon and the assembly laminated under heat and pressure.  Other examples are given.