baber/WOPTO huggingface dataset:
Patent GB-1028173-A (GB)
Title: Process for the production of organic phosphorus halide complexes
Inventor: SCHLIEBS REINHARD
IPC: C07F9/02
Filed: 1963-10-08
Abstract: Alkyl halophosphine-aluminium halide complexes of the formula <FORM:1028173/C2/1> (in which R is a straight- or branched-chain alkyl radical having 1 to 20 carbon atoms or a cycloalkyl radical having 5 to 6 carbon atoms, X is chlorine or bromine or R, Hal is bromine or chlorine, n being 1 when y is 4 and n being 2 when y is 7, are obtained by reacting one of the following phosphorus halides: phosphorus trichloride, phosphorus tribromide, appropriate alkyl phosphorus dichlorides, alkyl phosphorus dibromides, cycloalkyl phosphorus dichlorides and cycloalkyl phosphorus dibromides and one of the following organic halides: alkyl chlorides, cycloalkyl chlorides, alkyl bromides and cycloalkyl bromides with a solution of an aluminium halide in an alkali metal tetrahaloaluminate at a temperature of 30 DEG  to 300 DEG  C. said alkyl and cycloalkyl radicals corresponding to the groups defined above.  Suitable alkyl and cycloalkyl phosphorus dihalides include: methyl-, ethyl-, propyl-, isopropyl-, butyl-, dodecyl-, cyclopentyl- and cyclohexyl-phosphorus dichlorides and bromides.  Suitable organic halides include: methyl, ethyl, propyl, isopropyl, n, iso and tertiary butyl, dodecyl, cyclopentyl and cyclohexyl chlorides and bromides. As alkali metal tetrahalo-aluminate, sodium tetrachloro- or bromo-aluminate may be used. Mixtures of tetrahaloaluminates of different alkali metals such as, for example, a mixture of sodium tetrachloroaluminate and lithium tetrachloroaluminate may also be used.  It is preferable to keep the ratio between alkali metal tetra-haloaluminate and complex in the region of about 1:1.  The process may be carried out by initially providing a molten alkali metal tetrahaloaluminate, especially sodium tetrahaloaluminate, dissolving the necessary quantity of aluminium halide in the haloaluminate and adding phosphorus trihalide or phosphorus alkyl halide and the alkyl halide dropwise to the mixture, it being advantageous for these latter to be mixed beforehand.  After the mixture has been added dropwise a melt is formed which can easily be reduced under known conditions.  Complexes which can be prepared include ethyl-tetra-chlorophosphine-aluminium chloride, cyclohexyl - tetrachloro-phosphine-aluminium chloride, isorpopyltetra-chlorophosphine-aluminium chloride, diethyl trichlorophosphine - aluminium chloride, trichloromethyl-tetrachlorophosphine-aluminium chloride, ethyl tetrabromophosphine-aluminium chloride complex.  The complexes may be used as intermediate products for the production of alkyl-phosphorus compounds, which are important for pest-control purposes.
Patent GB-1492100-A (GB)
Title: Delayed sweep system for an oscilloscope
IPC: G01R13/30
Filed: 1975-09-30
Abstract: 1492100 Cathode-ray tube timebase circuit; transistor switching circuits TEKTRONIX Inc 30 Sept 1975 [12 Dec 1974] 39916/75 Headings H4T and H3T An oscilloscope with main time base synchronized to an input signal 42 displays at the same time to an enlarged scale two segments of the input waveform indicated by brightened segments of the main display (Fig. 4, not shown). A main time base circuit 10 supplies a sawtooth wave 48, its rate set by timing switch 50 and its amplitude matching the screen graticule. A delayed sweep circuit 12 provides a faster timebase, of rate set by timing switch 64, initiated when the main sweep voltage exceeds one of two levels, the comparison being made by selected comparator (delay pickoff) circuit 72 or 74. Potentiometer 80, 90 supply via amplifiers 84, 94, 104 reference voltages, both depending equally on potentiometer 80, and their difference depending on potentiometer 90. The main sweeps are counted in repeating sets of four N1-4, in alternate logic circuit 78 controlling output switching circuit 24; in main sweeps 1 and 2 of each set the delayed sweep is triggered by circuit 72, and in sweeps 3 and 4 by circuit 74. In main sweep N1 the main sweep is displayed with the circuit 72 delayed sweep period brightened; in main sweep N3 in each set the same occurs with the circuit 74 period brightened. In main sweep N2 the delayed sweep triggered by 72 is displayed with, via vertical amplifier 22, a vertical shift to avoid clashing of traces; and in main sweep N4 the delayed sweep triggered by circuit 74 is displayed with a different vertical shift. A digital voltmeter 110, calibrated in time, according to the scale set by main sweep timing switch 50, displays in characters on the screen or otherwise the time interval between corresponding points in the two delayed sweeps and the duration of each. The comparators of delay pick-off circuits 72, 74 may comprise (see Fig. 2) twin differential switching circuits, only one at a time being activated via gating pulses on the bases of current source transistors 136, 156; when the main sweep voltage 48 on terminal 46' exceeds the reference level on 84' or 104', the potential on 60' falls to initiate the delayed sweep via gate 60. In an alternative circuit, see Fig. 6, the transistor 130 acts additionally for transistor 150, the switching of the active comparator being sharpened by the four diodes, allowing the non-conducting collector of transistors 136, 156 to float.
Patent GB-1176267-A (GB)
Title: Apparatus for Physical Exercises
Inventor: ALVAREZ FRANCISCO GODIA
IPC: A63B/
Filed: 1968-08-22
Abstract: 1,176,267. Seats. F. GODIA ALVAREZ. 22 Aug., 1968 [22 Aug., 1967], No. 40211/68. Heading A4H. [Also in Division A6] A seat 3 is provided which fits over an exercising device which comprises a rectangular dihedral framework of rods 1 and a cranked shaft 2 rotatably mounted on the apices a and b.
Patent GB-922431-A (GB)
Title: Improvements in or relating to time-piece mechanisms
Inventor: LITTERICK JAMES GRIERSON
IPC: H03B7/08
Filed: 1960-11-23
Abstract: 922,431. Clocks and watches. STANDARD TELEPHONES & CABLES Ltd. Sept. 29, 1961 [Nov. 23, 1960], No. 40323/60. Drawings to Specification. Class 139. In a timepiece in which the oscillator is electromagnetically maintained, the maintaining circuit includes a semi-conductor device having a region of negative incremental resistance for a given range of applied voltage e.g. a tunnel diode. The oscillator e.g. the balance carries a permanent magnet which co-operates with a stationary electromagnet in series with the tunnel diode which is biased by the resistance of the electromagnet coil or by a separate resistor.
Patent GB-1477636-A (GB)
Title: Rotary internal-combustion engines
IPC: F01C19/04
Filed: 1974-11-21
Abstract: 1477636 Rotary positive-displacement fluidmachines UNITED KINGDOM ATOMIC ENERGY AUTHORITY 21 Nov 1974 [30 Aug 1973 24 Oct 1973] 40980/73 and 49663/73 Heading F1F In a Wankel-type I.C. engine each apex seal 10 and coatings or linings 15 on the side walls of the associated slot 13 are made of a refractory material, which may comprise silicon nitride or silicon carbide.
Patent GB-1219438-A (GB)
Title: Heat sinks for semiconductor devices
Inventor: WADSWORTH ROBERT MILFORD
IPC: H01L23/40
Filed: 1968-08-30
Abstract: 1,219,438. Gripping tools. WESTINGHOUSE BRAKE ENGLISH ELECTRIC SEMICONDUCTORS Ltd. 23 July, 1969 [30 Aug., 1968], No. 41441/68. Heading B4W. [Also in Divisions E2 and H1] A holder for a semi-conductor device comprises a pair of hinged arms 4, 5, on which are opposed contact areas 9, 10, forced into mutual engagement by spring 11. Cooling fins 12, 13 are provided on the hinged arms which are electrically insulated from one another so that when they are gripping a device 1 the contacts 2, 3 are not shorted together. The spring system may be on the opposite side of the hinge from. or on the same side of the hinge as, the semiconductor device gripping jaws, and the spring may be housed within a bore in one of the arms, Fig. 2 (not shown).
Patent GB-1059370-A (GB)
Title: Alumina refractories
Inventor: TALSMA HERBERT
IPC: C04B38/00
Filed: 1964-02-11
Abstract: A porous refractory body having a continuous integral skeletal structure of a -alumina, or a composite of alumina with silica or a metal silicate is formed by heating a mass composed of at least 20% by weight aluminium or aluminium alloy shapes, based on the weight of the mass, a fluxing agent as below in amount 0.02-20% by weight of the weight of aluminium present, and up to 50% by weight, based on the weight of the mass, of a siliceous constituent containing silica or silicic acid, the aluminium or aluminium alloy shapes having one dimension of at least 7 mils, a second dimension of at least 0.5 mils. and a third dimension of 0.5-200 mils., the mass having a porosity after removal of volatile material of at least 20%, said heating being carried out at a temperature of at least 700 DEG  C. in an oxygen-containing atmosphere for a period of time sufficient to form the skeletal structure by oxidation of aluminium.  The fluxing agent is selected from the oxides of the alkali or alkaline earth metals V, Cr, Mo, W, Cu, Ag, Zn, Sb, Bi or precursors of said oxides. Preferred fluxes are the oxides and hydroxides of the alkali metals, Mg, Sr and Ba.  The siliceous constituent may be a pure metal silicate such as sodium meta silicate, lead silicate or magnesium ortho silicate, a clay such as kaolin, ball clay or a fire clay, burnt clay, i.e. grog, or a magnesium and silicon-containing mineral such as asbestos, talc, steatite or soapstone, forsterite or vermiculite. About 0.1-2% of a binder consisting of water, ethanol, ethylene glycol, acetone, carboxy methyl cellulose, rubber, gum arabic, polyvinyl alcohol, polyvinyl pyrollidone, natural gums, glue or a self-bonding material such as Sorel cement (2 MgO.MgCl2.6H2O) or a mixture of MgO and saturated NaCl, may be added to increase the green strength of the shaped object.
Patent GB-1214950-A (GB)
Title: Watch case assembly
IPC: G04B37/00
Filed: 1968-08-30
Abstract: 1,214,950. 950. Watch cases. SUWA SEIKOSHA K.K. Aug.30, 1968 [Sept.11, 1967], No.41556/67. Heading G3T. A watch case comprises a one-piece back cover member 12 having a side wall serving as an internal case body and engaging the glass 11, and an outer case body 1 disposed on the outer periphery of the member 12 and provided with horns 8 for attachment of a watch strap, the watch movement 5 being engaged and supported by a casing ring 4 secured to the interior of the member 12. The body 1 is mounted between an annular projection 6 and a bent over flange 10 on the member 12.
Patent GB-926121-A (GB)
Title: Improvements in or relating to friction discs
IPC: F16D69/04
Filed: 1959-12-08
Abstract: 926,121. Friction clutches. FRANCAISE DU FERODO S.A. Dec. 8, 1959 [Dec. 9, 1958], No. 41759/59. Class 80 (2). A friction disc 10 for a heavy duty clutch has radial slots 11 across which flexible members 22 are secured in order to prevent fracturing of the disc. The members 22 may cover the radially outer ends of the slots, or the inner ends, and are secured to the disc by rivets 23 or by spot welding. The members 22 may be of steel and be of less thickness than friction linings 14 so as not to participate in the frictional operation, or they may be of substantially the same thickness in order to participate. The members 22 may alternatively be of asbestos fabric. The linings 14 may be of woven fabric, moulded asbestos or calcined metal, and may be directly secured to the disc by adhesive, or, as shown, may be mounted in holders 15, 16 riveted to the disc.
Patent GB-1068555-A (GB)
Title: Light-sensitive photographic materials containing developing agent precursors
IPC: G03C5/30
Filed: 1963-10-24
Abstract: Lead catechol is prepared by adding catechol and aminoethanol to lead acetate.
Patent GB-1371713-A (GB)
Title: Throughflow reglating apparatus in a central heating plant
IPC: F16K31/06
Filed: 1972-09-11
Abstract: 1371713 Central heating systems ROMAY AG 11 Sept 1972 [10 Sept 1971] 42131/72 Heading F4U [Also in Division F2] In a horizontal single tube central heating system a pipe 2, Fig. 1, connected between the main flow pipe 1 and a heating unit 3 contains a rotatable valve member 4 having armature elements 7 magnetically associated with an external actuating member. The latter may comprise a manually-rotatable four-pole ring magnet 8 permanently mounted on the pipe 2 or carried by a pair of tongs, Fig. 3 (not shown), so as to be removable from the device after adjustment of the valve member, or it may comprise a magnetic coil connected to a pole ohanger for remote control. The magnet 8 retains the valve member in its adjusted position, however in the case where the magnetic field is removed after adjustment, the valve member is retained by friction by allowing the elements 7 to rest on bead 11 as shown at 17 or is retained by male and female engagement members. The flow control element of the member 4 is in the form of a scoop 5, but may instead be a butterfly valve or other means. The scoop 5 diverts an adjustable quantity of main flow from pipe 1 upwardly into heating unit 3 wherefrom a return flow path is established between the valve member 4 and the pipe 2.
Patent GB-1447665-A (GB)
Title: Process for the level dyeing of wool having an antifelting finish
IPC: D06P1/62
Filed: 1973-09-07
Abstract: 1447665 Dyeing wool HOECHST AG 7 Sept 1973 [8 Sept 1972] 42135/73 Heading D1B Wool having a polyamine or polyimine antifelting coating is dyed by an exhaustion process in aqueous bath with at least one reactive dye which contains in the non-fibre-reacting groups in the molecule two or more groups selected from sulphonic acid and sulphonate groups in the presence of an additive of general formulae: in which X is a hydrogen atom or an -SO 3 H or -SO 3 Na group or other -SO 3 - alkali metal group, R 1  represents a C 2  to C 14  alkyl group, R 2  and R 2 ' which may be the same or different each represents a hydrogen atom or C 2  to C 14  alkyl group, Y and Y' which may be the same or different each represents hydrogen or a sodium atom and A is a radical -CH 2 - or a mixture of any two or more of such additives. The total amount of additive is preferably in the range 0.5 to 1% calculated on the weight of dry wool, preferred additives being a condensation product of formaldehyde and naphthalene-2-sulphonic acid, sodium dodecylbenzene sulphonate, and the condensation product of m-cresol with naphthalene-2-sulphonic acid in a molar ratio of 1:2. Azo and anthraquinone dyes containing a vinylsulphone, sulphatoethyl - sulphone, chloroethylsulphone, methyltaurinosulphone or thiosulphatoethylsulphone group may be used.
Patent GB-1106907-A (GB)
Title: Vibrating string measuring instruments
IPC: G01L1/10
Filed: 1965-10-07
Abstract: 1,106,907. Measuring force, or weight, electrically. WIRTH, GALLO & CO. Oct. 7, 1965 [Nov. 27, 1964], No. 42615/65. Heading G1N A weight or force to be measured is applied indirectly to a pair of pre-tensioned electrically excited transversely vibrating strings 9, 10 (Fig. 2), the resultant change in vibration frequency being picked up by known type exciting and sensing heads 30, 31 and used as a measure of the load magnitude. A load M is applied to the strings 9, 10 via a carrier member 21, fixed to a frame 1, 2 for vertical parallel movement thereto by means of radius rods 22, transmission elements 16, 15 and a central coupling member 11. A weight 4 for pre-tensioning the strings is suspended by an element 12 e.g. a leaf spring, from the central member 11 and parallel radius rods 5 guide the weight vertically within the frame. The elements 15, 16 together with an element 14 which is attached to the frame are coupled by a member 13 and form a polygon of forces for transmitting the load to the strings 9, 10. The element 16 is guided by a radius rod 17. The angles between each of the strings 9, 10 and the vertical and between each element 14, 15 and the vertical are adjustable by movement of clamping heads (6), (7), (8) Fig. 4 (not shown) by which they are attached to the casing. The strings 9, 10 may be de-coupled from their environment within the frequency range of their transverse vibrations by arranging that the clamping heads (6), (7) and the central member 11 constitute low frequency mechanical filters having a cut-off frequency lower than the resonant frequency of the strings. In an alternative embodiment for measuring a force (Fig. 3) instead of the weight 4 there is provided a biasing tension spring 32 and the elements 14, 15, 16 are biased by a tension spring 33, the force to be measured being applied at 35.
Patent GB-1079256-A (GB)
Title: Improvements in or relating to the manufacture of foamed  polyurethanes
Inventor: BURROWS HAROLD GEORGE
IPC: C08G18/00
Filed: 1964-10-20
Abstract: Foamed polyurethanes are prepared by reacting an 80/20 mixture of tolylene 2,4 and 2,6-diisocyanates with a polyester containing more than two isocyanate-reactive groups per molecule optionally in the presence of catalysts for polyurethane foam production and water, the reaction mixture also containing a water-soluble salt of an acid ester of a polybasic acid, said acid ester containing a hydrophobic polyether chain and a polyoxyethylene ester of an aliphatic monocarboxylic acid containing 10 to 20 carbon atoms or a block copolymer of ethylene oxide and an alkylene oxide which contains at least three carbon atoms in the molecule.  The polyesters may be prepared by reacting polyhydric alcohols with polycarboxylic acids one of which contains more than two reactive groups in the molecule. Suitable substances containing more than two reactive groups in the molecule are glycerol, trimethylolethane, trimethylolpropane, triethanolamine, pentaerythritol, dihydrostearic acid, trimesic acid and trimellitic acid.  The acid esters can be those of hydroxyl group containing polyether products of the polymerization of cyclic oxides containing more than two carbon atoms per molecule with such acids as sulphuric and phosphoric aliphatic and aromatic polycarboxylic acids. The preferred acid esters are sulphuric acid esters of a hydroxyl group-containing polypropylene oxide in the form of their ammonium or alkali metal salts or their salts with tertiary, secondary or primary amines.  Suitable polyoxyethylene esters are those prepared by condensing ethylene oxide with lauric, palmitic, stearic, linoleic, ricinoleic and especially oleic acid.  Preferred block copolymers are those derived from ethylene- and 1,2-propylene-oxide.  Halogenated hydrocarbons may be used as auxiliary blowing agents.  Suitable catalysts are tertiary amines and organic compounds of metals particularly those of tin, iron, manganese and lead.  Flame retardants such as tris-b -chloroethylphosphate, antimony oxide or tris-2,3-dibromopropyl phosphate may also be incorporated into the reaction mixture.
Patent GB-1279653-A (GB)
Title: Improved gel carriers containing photographic materials
IPC: G03C5/26
Filed: 1969-08-28
Abstract: 1279653 Gel carriers for photographic materials ITEK CORP 28 Aug 1969 [3 Sept 1968(2)] 42774/69 Heading G2C A gelable composition comprises a photoprocessing solution (which is a solution or dispersion used to process a photo-sensitive medium before or after exposure) and a heat-reversible gel-forming Cawageonan and/or Furcellaran as the only or principal gel-former(s). The gelformer is preferably 1-3% of the solution weight. The photo-precessing solution may be a colour or black-and-white developer, physical developer which may contain silver ions, developer-fixer, fixer. In Ex. 8 the photo-processing solution is an alkaline aqueous solution of formalin and ethylenediamine tetraacetic acid tetrasodium salt. These gel-formers are natural polysaccharides which are obtained from Red Seaweed. The gelled solutions have the properties of solids and allow completely dry processing of film.
Patent GB-1414357-A (GB)
Title: Heavy-duty v-belt
IPC: F16G5/20
Filed: 1973-09-12
Abstract: 1414357 Laminates GOODYEAR TIRE & RUBBER CO 12 Sept 1973 [29 Sept 1972] 42793/73 Heading B5N [Also in Division F2] A belt comprising an interior structure enclosed by a rubberized fabric has an inner surface comprising a plurality of substantially evenly spaced transverse corrugations moulded therein the corrugations having a depth at the longitudinal centre of the belt greater than the thickness of the envelope material and tapering into the sides of the belt to a depth at least equal to the thickness of the envelope material. The belt may be a V-belt 10 having a neutral axis section 14 composed of a plurality of longitudinally oriented and substantially inextensible tightly twisted cords embedded in tough rubber 20, a compression section 16 composed of stiff fibre-loaded rubber and a tesnion section 12 including rubber-impregnated fabric 22, e.g. tire cord fabric or a square woven fabric. Corrugations 24 preferably have a depth at the longitudinal centre of the belt which is 10-35% of the total belt thickness.
Patent GB-1398743-A (GB)
Title: Fuel injection pumps for internal combustion engines
IPC: F02M59/02
Filed: 1972-09-15
Abstract: 1398743 Fuel injection pumps ROBERT BOSCH GmbH 15 Sept 1972 [18 Sept 1971 13 Oct 1971] 42796/72 Heading F1A A fuel injection pump comprises a casing 10, a body 13 defining a cylinder bore 17 and having a mounting flange 15 clamped by screws 48 against an upper face 11 of the casing, and a pressure valve 36 held against a shoulder 42 in an extension 38 of the cylinder bore 17 by a nipple 39 screwed into an internal thread 41 in the end of the extension bore 38 remote from the cylinder bore 17. The body 13 is located in a bore 12 in the casing and its reduced diameter end 14 is disposed with a clearance a in a bore 12a. O-rings 58, 62 are provided for preventing leakage past the body from a suction chamber 24. In operation fuel from the suction chamber 24 enters the working chamber 21 through a control port 22 covered by upward movement of the piston 18 and uncovered, to terminate delivery, by an oblique edge 25 on the piston 18. Thus fuel in the chamber 21 spills into the suction chamber 24 where it is intercepted by a baffle ring 53 secured by a snap ring 54. Various dimensional relationships between parts are specified.
Patent GB-1125121-A (GB)
Title: Improvements in or relating to aircraft aerodynamic structures
IPC: B64C21/06
Filed: 1964-10-20
Abstract: 1,125,121. Boundary layer control. HANDLEY PAGE Ltd., and J. B. EDWARDS. 1 Sept., 1965 [20 Oct., 1964], No. 42806/64. Heading F2R. [Also in Division B7] An aircraft wing to which boundary layer suction is applied comprises an outer skin 11 containing spanwise extending lines 10 of porous elements, e.g. slots, holes, or inserted porous material, spanwise chambers 15 beneath the skin, each in communication with a line 10, spanwise ducts 16 each in communication with a chamber 15, and chordwise ducts 25 communicating with the spanwise duets. The chordwise ducts lead to one or more main ducts and contain valves for adjusting the flow rate on final assembly or during servicing. The main ducts may be of glass fibre construction and be located between two wing spars. The invention may be applied to other aircraft surfaces.
Patent GB-914695-A (GB)
Title: Improvements in or relating to machines for cutting or shearing sheets or plates
Inventor: RIDGWAY HARRY
IPC: B23D17/00
Filed: 1959-12-18
Abstract: 914,695. Shearing. RHODES & SONS Ltd., JOSEPH. Nov. 25, 1960 [Dec. 18, 1959], No. 43044/59. Addition to 884,989. Class 83 (4). In a plate shear as described in the parent Specification, the pivot shaft about which the beam carrying the movable blade is pivoted is adjustable axially of itself to vary the clearance between the blades. The bladecarrying beam 5 is fixed to a housing 6 mounted by roller bearings 7, 9, 10 on the pivot shaft 1. The pivot shaft 1 is axially slidable in fixed bearings 2, 20 and carries adjustable abutments 25, 26. A rod 22 rotatably mounted in the bearing 20 has a reduced eccentric portion 23, and two plungers 24 located in the bore parallel to the axis of the pivot shaft 1 are positioned between the eccentric portion 23 and the abutments 25, 26. Rotation of the rod 22 by a handle 30 thus moves the pivot shaft 1 to alter the blade clearance.