baber/WOPTO huggingface dataset:
Patent GB-1283751-A (GB)
Title: Improvements in or relating to switching circuit arrangements
IPC: H04L27/20
Filed: 1969-11-07
Abstract: 1283751 Modulation; frequency changing SIEMENS AG 7 Nov 1969 [8 Nov 1968] 54759/69 Headings H3R and H3T A modulator or frequency changer comprises: two or more switching stages A1, A2, Fig. 6, each comprising a pair of transistors T11, T21 or T12, T22 with their emitter-collector paths in connected series via respective resistors Re1, Re2; a common resistor Rc connecting the collectors of T11, T12 to a supply terminal; a potential divider R5, R6 with intermediate tapping points connected to the bases of T11 and T12; input signals, e.g. from T3, also connected to the bases of T11 and T12; and control inputs + uSt, - uSt connected to the bases of T21 and T22, whereby the input signal ult may be selectively fed to the output. If antiphase input signals, e.g. from the collector and emitter of input transistor T3 are fed to T11, T 12 the circuit functions as a ring frequency converter. An amplifier (T4) may be included between the input stage T3 and the stages A1, A2, Fig. 7 (not shown). Phase shift keying may be produced by feeding phase displaced carrier signals to the upper transistor of each pair, so that the output phase will depend on which of the lower transistors is switched on. An arrangement for keying a carrier to one of three phases displaced by 120 degrees is described with reference to Fig. 4 (not shown) which includes three switching stages (A1, A2, A3).
Patent GB-1310570-A (GB)
Title: Ignition system for an internal combustion engine
IPC: H01T13/20
Filed: 1970-11-19
Abstract: 1310570 Two-part couplings CHAMPION SPARK PLUG CO 19 Nov 1970 [14 Jan 1970] 55013/70 Heading H2E [Also in Divisions F1 and F2] In an electric coupling in the ignition system of an I.C. engine a radio interference suppression resistor 19 is connected to a terminal by a strip or wire spring 11 of the form shown instead of by a coil spring. The resistor, carbon or wirewound, may be mounted in the distributer cap or rotor, in a terminal connecting an ignition cable to a spark plug, or in the spark plugs themselves. The spring may be positioned between the resistor and the centre electrode 16 of the spark plug, or between the resistor and the external terminal 20.
Patent GB-1223509-A (GB)
Title: Improvements relating to injectors for fuel-injection internal combustion engines
IPC: F02M47/00
Filed: 1969-11-11
Abstract: 1,223,509. Fuel injectors. DAIMLER-BENZ A.G. Nov.11, 1969 [Nov.12, 1968], No.55199/69. Heading F1B. In a fuel injector in which leakage is returned from the upper part of a nozzle holder 2, at least one leakage-oil nipple 3 on to which an oil-return hose 7 can be pushed is disposed on the upper part of the nozzle holder. The hoses 7, 8 may be connected to the pump suction side or to an adjacent injector.
Patent GB-1206400-A (GB)
Title: Improvements relating to tubular structures
Inventor: PACKMAN PERCIVAL JAMES
IPC: E04B1/19
Filed: 1966-12-12
Abstract: 1,206,400. Space frames; clamps. STEWARTS and LLOYDS Ltd. 21 Dec., 1967 [I2 Dec., 1966], No. 55542/66. Heading E1K and E2B. '[Also in Division F2] A method of assembling joint between the ends of a number of tubular steel members lying substantially in a common plane and forming part of a space frame, the joint being made by means of a pair of clamping elements 8, 10 between which the ends of the tubular members are gripped, comprises the steps of connecting one or more of the tubular members, e.g. the tubular member 4, temporarily and independently to one of the clamping elements, viz element 8 as shown, each by an individual holding device 1 which does not impede the fitting of the second clamping element 10, bringing the ends of the remaining tubular elements into their correct positions in relation to the first clamping element 8 (as at 24, Fig. 3, not shown), and finally securing the second clamping element to the first, as by screws 15, to complete the joint. The method is used where a building structure in the form of a space frame is constructed by first constructing a number of sub-assemblies at ground level, some of the joints therefore being incomplete, and then connecting the various sub-assemblies to form the complete structure. Each holding device 1 consists of a saddle piece 2 which is recessed at 3 to accommodate the member 4 and has a projecting portion 7 which overlies the element 8, and a bridge piece 6, screws 5 being passed through apertures in the bridge piece 6 and tightened within threaded apertures in the saddle 2 to clamp the holding device on the member 4 and at the same time cause the element 8 to 'be gripped between the end of member 4 and the element 8. Since bridge piece 6 is well clear of the end portion of element 4 to be clamped between the elements 8, 10, it does not impede fitting of the element 10, following the assembly of the remainder of the tubular members. The holding device 1 is removed, as shown in Fig. 4, after completion of the joint by tightening of the screws 15. The clamping elements 8, 10 shown are as described in Specification 1,206,399 for receiving two, three or four tubular members arranged at right angles to one another in the same plane, the element 8 comprising lugs 16 for receiving two, three or four further tubular members 17 to provide diagonal cross connections between sets of tubular elements in two parallel planes (Fig. 6, not shown). A slot 18 is provided in the saddle portion 2 of each holding device to accommodate the lugs 16. In order that the ends of the tubular members be securely gripped by the clamping elements, they are provided with ribs 9 which mate with corresponding grooves in the clamping elements. Arrangements for the supporting of two sub-assemblies (30, 33 Figs. 5 and 6, not shown) while they are being connected together by the above method are also disclosed.
Patent GB-1360560-A (GB)
Title: Process for the preparation of 3-benzoylphenyl alkanoic acids
IPC: C07C51/08
Filed: 1972-12-01
Abstract: 1360560 Preparation of 3-benzoylphenylalkanoic acids RHONE-POULENC SA 1 Dec 1972 [3 Dec 1971 16 Oct 1972] 55640/72 Heading C2C Compounds XV in which R 4  is H or halo, and R 3  is H or CH 3  are prepared by Friedel-Crafts reaction of a nitrile XVI and benzene or a halobenzene to give a nitrile XVII which is then hydrolysed. The free acid may be converted to a salt by methods known per se. The starting material XVI is prepared by reaction of SOCl 2  with the appropriate acid.
Patent GB-1418487-A (GB)
Title: Panel
IPC: B23K11/14
Filed: 1972-12-05
Abstract: 1418487 Laminated metal-foam panels BENNES MARREL 5 Dec 1972 [6 Dec 1971 14 April 1972] 55983/72 Heading B5N [Also in Division E1] A panel comprises two opposed, spaced metal sheets 10, 11 interconnected by parallel, elongate metal reinforcements 12 of channel section extending between the same two opposite side edges of the panel, the sides of the channel being divergent and having a flange on their free end, all of the webs of the reinforcements being secured to one sheet 10 and all of the flanges being connected to the other sheet 11. A third metal sheet 14 may be connected to sheet 11 by a sheet of plastics foam 13. Alternatively, the space between sheets 10 and 11 may be filled by a plastics foam which may vary in density across the panel's thickness. The metal sheets may be of steel and the foam may be of polyurethane or polyvinyl chloride.
Patent GB-1327318-A (GB)
Title: Method of and apparatus for laying a submarine cable for  electric power transmission
IPC: H02G1/10
Filed: 1971-12-06
Abstract: 1327318 Laying cables CABLES DE LYON ALSACIENNE 6 Dec 1971 [7 Dec 1970] 56615/71 Heading H2C During laying, an electric cable 4 and a carrier element 1 are bound side by side prior to being submerged. Only the carrier, which may be covered with a sheath, passes round the capstan 2 to obviate damage to the cable. Carrier element and cable may be joined either continuously along their length e.g. by welding or binding, at discrete intervals e.g. by means of regularly-spaced collars or by both means simultaneously. Lifting means for use while repairing may be attached to the carrier element.
Patent GB-1196569-A (GB)
Title: Novel Substituted Propanamides having Choleretic Action
Inventor: NORDMANN JOSEPH
IPC: C07C233/16
Filed: 1968-11-29
Abstract: 1,196,569. 2 - (41 - Chlorophenoxy) - 2 methyl N,N - bis (# - hydroxyethyl) - proxamide and esters. UGINE KUHLMANN. 29 Nov., 1968 [1 Dec., 1967], No. 56650/68. Heading C2C. The novel belt compound of formula and esters thereof are prepared by condensing a halide of parachlorophenoxyisobutyric acid and diethanolamine optionally followed by ester formation. Pharmaceutical compositions in conventional forms for oral rectal or parenteral administration and having coleretic, anti-atheromatous and sedative activity comprise an above novel compound and a carrier therefor.
Patent GB-1214817-A (GB)
Title: Light sensitive semiconductor control circuits
Inventor: HARNDEN JOHN DAVIS JR
IPC: H03K3/42
Filed: 1967-12-14
Abstract: 1,214,817. Electroluminescence. GENERAL ELECTRIC CO. 14 Dec., 1967 [6 Feb., 1967 (2)], No. 56931/67. Heading C4S. [Also in Divisions G1, H2 and H3] A silicon controlled rectifier is triggered by light from an injection luminescent junction device transmitted to a light sensitive junction of the rectifier by a fibre optic element. The light-emitting diode (or L.E.D.) may have a hemispherical surface (Fig. 1b, not shown) secured to an optic fibre bundle by clamping means (22) having the same index of refraction as the fibres. In Fig. 1 light emitting diodes 17, 18 may simultaneously cause light sensitive thyristors or triacs to conduct energy to the load during one half cycle under the control of a variable pulsing network 16. If one L.E.D. is reversed full wave control is obtained. Variation of the power and the load may be effected by varying the phase or frequency of the control pulses. Fig. 2 shows a circuit operable as an inverter or as a reversing switch controlled by switches 41 and 42. A capacitor 37 charges until L.E.D. 32 conducts and emits light to trigger thyristors 25, 28. Capacitor 37 is discharged by the diode and the thyristors are switched off by a comutating circuit C.C. Subsequently L.E.D. 33 conducts to switch on thyristors 26, 27, the wavelength of the two L.E.D's being different so that the desired thyristors only are switched on. The sequence of switching may alternatively be obtained by a phase-shift network (Fig. 3, not shown) or the L.E.D. may be such as to emit light of different wavelengths for forward and reverse bias so as to trigger the corresponding thyristors (Fig. 4, not shown) to provide the control sequence or reversing of the switch. The different wavelengths may be obtained, in a further alternative, by selectively operable light filters. If the D.C. power supply is replaced by an A.C. supply or relatively high frequency the circuit could be operated as a cycle-converter. In Fig. 5 (not shown) the lower arms of the bridge of Fig. 2 are replaced by diodes and a single L.E.D. (47) is phase controlled through a triac the L.E.D. emitting light of different wavelengths on the different half cycles to selectively operate the corresponding thyristor for inverter or reversing switch operation. The L.E.D. is also shown controlling thyristors (67<SP>1</SP>, 68<SP>1</SP>) in a transformer type four way rectifying system or reversing switch.
Patent GB-1166839-A (GB)
Title: Improvements in or relating to Sintered Tool Tips
Inventor: FRUISH HARVEY
IPC: C22C29/06
Filed: 1966-12-21
Abstract: 1,166,839. Sintered cemented carbides. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Dec.18, 1967 [Dec.21, 1966], No.57233/66. Heading C7D. A composite sintered cemented carbide tool tip material is made from at least two different grades of powder mixtures each consisting of one or more refractory metal carbides such as WC, TiC, TaC, NbC, and one of the binders Fe, Co or Ni, one of the mixtures (A) being compacted and partially sintered and then crushed to form granules which are then mixed with the other powder mixture (B) to form a composite mixture which is compacted and sintered to form a composite material consisting of a sintered matrix of the powder mixture (B) containing dispersed sintered granules of the mixture (A) previously partially sintered, in the size range 50-250 microns. Examples are given of the preparation of the following composites made from two different grades of mixtures, one of which is a mixture of W% of an 80/20 of WC and TiC with X% Co, and the other is a mixture of Y% WC and Z% Co, where W, X, Y and Z are respectively 5-50%, 3-10%, 5-50% and 3-50% by total weight of the  final sintered composite. The composite can be used for machining steel or cast iron workpieces at a surface speed of 600 ft. /minute at a feedrate 0À020 inches/revolution of the workpiece. The metal carbides have a grain size of 1-5 microns and the method can be such as to produce granules of a cast iron cutting grade in a matrix of a steel cutting grade or vice versa. Alternatively two steel cutting grades may be used together or two cast iron cutting grades may be combined to form a matrix of coarse grained cemented carbide with a dispersion of a fine grained cemented carbide.
Patent GB-1370115-A (GB)
Title: Pattern cam removal mechanism for sewing machines
IPC: D05B19/00
Filed: 1971-12-10
Abstract: 1370115 Sewing machine stitch control cams SINGER CO 10 Dec 1971 [16 Dec 1970] 57615/71 Heading DIG [Also in Division F2] A pattern cam 40 in a sewing machine is mounted on a cam carrier 30 which is axially slidable on a corner mounting 16 on the end of the machine cam-shaft, the sliding movement causing pins 61 in radial holes in the cam carrier 30 to move between inward and outward positions where they allow the cam to be removed from the carrier to lock it in position. The carrier 30 has a flat internal portion 32 which keep the carrier against a flat surface 20 on the carrier mounting 16 so that it rotates therewith. Projecting legs 35 on the carrier 30 locate in slots 43 in the cam and slots 15 in a ring 14 on the carrier mounting. When the carrier 30 is pressed fully downwardly pins 61 therein, urged inwardly by a spring (not shown) in groove 65, locate in a groove 17 and project from the carrier 30 to hold the cam in place. As the carrier is raised the pins move inwardly and lock in a second deeper groove 18 and are wholly inward of the carrier thus allowing the cam 40 to be removed.
Patent GB-1245432-A (GB)
Title: Improvements in or relating to aircraft
IPC: B64C39/10
Filed: 1968-12-04
Abstract: 1,245,432. Airship. AEREON CORP. 4 Dec., 1968 [4 Dec., 1967], No. 57692/68. Heading B7W. [Also in Division B8] An airship has a hull 2 with a delta-shaped platform and a longitudinal section approximately that of an airfoil, the maximum lateral dimension of the hull being less than the maximum longitudinal dimension, and a gas space inside the hull and a separate cargo compartment 94 containing cargo-suspending equipment 76, itself suspended from the hull. At the rear of leading edges 6, 8 are provided fixed stabilizing surfaces in the form of end plates 10, 12 cambered inwards towards the top with control surfaces (18) (Fig. 4, not shown), trim tabs (20) and landing wheels 22. Four turboprop engines 28 are mounted at the rear and there is a control station 52 in the centre, for rearward taxi-ing, reached by a corridor 38. Spoiler flap assemblies 30 including upper and lower spoiler flaps are provided along the stern. In the lower half of the shell are provided openings 60, 62, for example, through which pass retractable landing wheels 64, 66 and which are closable by doors 69. Each wheel assembly is permitted to swivel freely to facilitate cross-wind landing. At suspension points at the end of the rigid horizontal beam 82, cables 88, 90 support the cover 74, 76 of the cargo compartment and the lower half shell 36 of the body. Cables 92 are connected between suspension point 84 and various points on the upper half shell 34. The cargo compartment 94 is provided with longitudinally-extending rails 96 for suspending containers, such as large trailers (see Division B8). The interior of nose 4 is separated from the main gas space by a bulkhead 114 to provide a flight station with decks 116, 118. Keel members 136, 138 extend between bulk-heads 32 and 140 and form a Y- keel transmitting the engine thrust to the cargo compartment. The leading edges 6, 8 have longitudinal stiffeners 142 and ring stiffeners 144, the opposite ends of which are connected by columns 146. Diagonal cables 148 connect opposite intersections of the columns 146 and ring stiffeners 144. The hull consists of metal panels (150), Figs. 6, 10 (not shown), with perpendicular sections (152) which are clamped together by a tubular member (154). The panels are connected to the structure 82 by cables 92 attached to the intersections. Fuel compartments 164 are provided in which fuel containers are suspended also from rails.
Patent GB-1427767-A (GB)
Title: Pyrolysis analysis
IPC: G01N1/40
Filed: 1973-12-17
Abstract: 1427767 Microscopes; pyrolysis samples COMPAGNIE FRANCAISE DES PETROLES 17 Dec 1973 [21 Dec 1972] 58407/73 Heading G2J  Apparatus for the analysis of a microscope specimen by pyrolysis comprises an optical microscope 1, an ocular tube 56 connecting a laser 3 to the microscope, and an hermetic chamber on the platform 2 in which pyrolysis is effected and which is connectible to a supply of gas 7 for entraining the pyrolysis products and to a chromatograph 13. The microscope includes a total reflection prism movable e.g. by button 57 between a position for viewing the specimen and a retracted position for allowing direct passage of the laser beam to the specimen. The hermetic chamber (50) Fig. 6 comprises a ring 24 which has a seating 43 for a window 25 and a groove 49 in the base for an O-ring 48. An inlet port is provided for admitting gas e.g. helium from supply 7 and an exit port 51 is provided for the helium/pyrolysate mixture. In use, the ring 24 is urged downwardly against a microscope slide (not shown) to which is stuck a section of the specimen. The point of the specimen to be analyzed is then determined by viewing through the microscope after which the totally reflecting prism is retracted and emission of the laser beam is started by operation of the high voltage supply 5 while the chamber 50 is scavenged by the gas from 7.
Patent GB-1365287-A (GB)
Title: Graphite compositions
IPC: F16J15/30
Filed: 1970-12-11
Abstract: 1365287 Refractory composition; cement IMPERIAL CHEMICAL INDUSTRIES Ltd 15 Nov 1971 [11 Dec 1970] 59039/70 Headings C1J and C1H A composition comprises graphite and a binder comprising complex aluminium phosphate containing at least one chemically bound ROH molecule where R=organic group or H, and an anionic group of a strong inorganic acid (other than an oxyphosphorus acid) or of a carboxylic acid. A dispersant, e.g. methanol, ethanol, isopropanol, butanol, glycol monoethyl ether chloroform or water, may be added to make up a composition suitable for moulding. R can be substituted or unsubstituted aliphatic hydrocarbons and preferably aliphatic alcohols. The anionic group is preferably chloride, bromide or iodide. Refractory materials, e.g. alumina, MgO, CaO, ZnO, SnO, magnesite, magchrome grog, zirconium silicate, zirconia, aluminium silicate, clays, silicon or tungsten carbides, silicon or boron nitrides, boron, asbestos, Fe2O3, Cr2O3, chromite, mica and aluminium phosphate, may be included. Additional binders may include alkyl silicates, Na or K silicates, silica sols, Al oxychlorides, gypsum/silica mixes or aluminous or Portland cement. The material may be foamed by including a surface active agent fluorocarbon propellant or MgCO3.
Patent GB-1288050-A (GB)
IPC: G03B1/56
Filed: 1969-12-11
Abstract: 1288050 Cinematographic apparatus EASTMAN KODAK CO 11 Dec 1969 [12 Dec 1968] 60528/69 Heading G2E In an automatic film-threading device, film roll 3 is rotated in take-up direction A by a slipping clutch drive to spindle 4, pressure bar 5 is moved to engage and lightly compress the film windings, so causing the free end to spring away from the roll to be engaged by a toothed sprocket 10 driven in the supply direction B whereby film is drawn off the roll against the slipping clutch and is fed to the associated cine apparatus. Sprocket 10 is driven by belt 12 and is moved with bar 5 towards roll 3. by a linkage operated by lever 9. The sprocket comprises normal film driving teeth alternating with shaped film pick-up teeth on a ring whose plane is slightly inclined to the axis of rotation to impart a wobbling motion. The threading device is used with open spools or with cartridges having a slot for insertion of the device.
Patent GB-1242080-A (GB)
Title: Improvements relating to electrical components
IPC: C25D5/00
Filed: 1968-12-20
Abstract: 1,242,080. Transformers; inductors. INTERNATIONAL BUSINESS MACHINES CORP. 20 Dec., 1968 [15 Jan., 1968], No. 60557/68. Heading H1T. A transformer or inductor comprises a ferromagnetic ferrite core 100 surrounded by encapsulation 120 grooves 120a in the encapsulation being so formed that tin-silver alloy cast therein will form at least one helical winding around the core. The encapsulation is preferably thermosetting resin, e.g. epoxy resin, and is formed by moulding, the configuration of the mould being chosen according to the desired product, e.g. a quad filar transformer (Figs. 11, 12, not shown). Encapsulated cores may be mounted each on one of a strip of interconnected plastics carrier plates (Figs. 5, 6, not shown)), with perforations for indexing the plates through the casting die. Terminals or connections thereto, and support tabs may be die-cast at the same time as the windings and the support plates may be provided with holes for anchoring these. The support plate and encapsulation may be integrally formed in one moulding operation (Figs. 9A, 9B, not shown) holes being provided in the plate for continuity of the windings. Four transformers may have their support plates interconnected to form a quad module (Fig. 15, not shown) which may itself be encapsulated.
Patent GB-1276148-A (GB)
Title: Improvements relating to machine tools
IPC: B23Q15/28
Filed: 1969-12-12
Abstract: 1276148 Turret lathes A MONFORTS 12 Dec 1969 [21 Dec 1968] 60729/69 Addition to 1251858 Heading B3T A machine tool as described and claimed in claim 3 of the parent Specification 1,251,858, but wherein the limit switch 14 is displaceable automatically by way of measured value transmitters 26 in dependence on the dimensions of a machined workpiece when contacted by a measurement feeler 27.