baber/WOPTO huggingface dataset:
Patent GB-1225388-A (GB)
IPC: B07C3/00
Filed: 1968-05-03
Abstract: 1,225,388. Controlling endless conveyers. ORGANISATION RALFS K.G. 3 May, 1968 [12 May, 1967], No. 21068/68. Heading B8A. In means for controlling vertical runs of belt conveyer installations, by means of destination indicators in the form of adjustable contact bridges 4 mounted on document wallets or containers 2 to be conveyed, the bridges 4 acting to interconnect electrically contacts 6a, and 7, which are connected in a control circuit and which are mounted on the conveyer framework so as to project into the path of the containers 2, the contacts 6a and 7 are arranged, alternately in a row at uniform intervals, the associated contact bridge of the destination indicator being of such dimensions that the electrical interconnection of two adjacent contacts is achieved even when the goods are in a tilted attitude. As shown, two rows of contacts are provided. The contacts 7 are electrically interconnected in both rows. In the second row, the contacts 7 alternate with contacts 8a. Connections 6, 8 from the contacts 6a, 8a lead to delivery control means (not shown).
Patent GB-1225695-A (GB)
IPC: H02M5/27
Filed: 1968-03-19
Abstract: 1,225,695. Frequency changing. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 19 March, 1968 [22 March, 1967], No. 13258/68. Heading H2F. A frequency converter comprises a bridge of controlled rectifiers 1.. 4 having a low frequency A.C. input fed to the A.C. points of the bridge, the D.C. points being connected by inductors 10, 11 to one side of a load, the other side of the load being connected to the neutral point of the low frequency A.C. supply. The controlled rectifiers 1 ... 4 are triggered by a generator 7 so that the converter output frequency is higher than that of the input. Inductors 10, 11 are preferably series tuned by capactor 16 to 1À4 times the output frequency. As shown, a filter 21 ... 27 isolates the high frequency output from the 50 Hz input 20; components 30 ... 37 protect thyristors 1 ... 4 from high voltage peaks and capacitors 17, 18 provide an artificial neutral for the supply 20. The converter may supply a magnetron 43 in an h.f. oven with 2À5 kW at 5À6 kV by coupling via a high frequency step-up transformer 13 and rectifiers 42. The load is tuned by capacitor 16 and inductor 15 (wound on the same core as transformer 13) to the output frequency 6À5 kHz. The converter is suitable for supplying loads such as discharge lamps, motors, rectifiers with input capacitor filters or accumulators. Figs. 3 and 5 (not shown) relate to frequency converters comprising a three-phase bridge and providing a higher frequency single-phase output for a commutator motor.
Patent GB-1226298-A (GB)
IPC: C07D251/34
Filed: 1969-07-01
Abstract: 1,226,298. Trialkenyl isocyanurates. DOW CHEMICAL CO. 1 July, 1969, No. 33057/69. Heading C2C. Tri(1 - alkenyl)isocyanurates are prepared by reacting cyanuric acid with acetylene, methylacetylene, or a mixture thereof, at 150-225‹ C. in the presence of an inert organic solvent and a catalyst which is zinc, a zinc compound, cadmium, a cadmium compound, a mixture of two or more thereof, or a mixture of one or more thereof with an organic tertiary nitrogen base. The process can be carried out in either continuous or batchwise manner, and is preferably effected under superatmospheric pressure. The cyanates and cyanurates of zinc and cadmium are preferred catalysts, and organic tertiary amides, e.g. N,N - dimethylacetamide, are preferred solvents.
Patent GB-1226557-A (GB)
IPC: B01D17/02
Filed: 1968-07-19
Abstract: 1,226,557. Settling oil emulsion. ESSO RESEARCH & ENG. CO. 19 July, 1968, No. 34616/68. Heading C1C. Oil in water emulsions are broken by agitating in the presence of a tetrahalogenated ethylene polymer coalescing surface and allowing to settle.
Patent GB-1227498-A (GB)
IPC: C03C25/10
Filed: 1969-07-04
Abstract: 1,227,498. Pigmenting glass fabric. DOW CORNING CORP. 4 July, 1969 [6 Aug., 1968], No. 33742/69. Heading D1B. Glass fabric is pigmented by applying an aqueous emulsion of a water dispersible pigment and a copolymer consisting of 50-90 mol percent of (CH 3 ) 2 SiO units and 10-50 mol percent of RSiO 3 / 2  units. in which R is an alkyl or alkenyl radical having 1-3 carbon atoms, the 3, 3, 3-trifluoropropyl radical or a phenyl radical the copolymer having been prepared by emulsion polymerisation, followed by drying the glass fabric. R may be a methyl, ethyl, or vinyl radical.
Patent GB-1232999-A (GB)
IPC: F16C39/06
Filed: 1967-09-18
Abstract: 1,232,999. Bearings. NATIONAL RESEARCH DEVELOPMENT CORP. 11 Sept., 1968 [18 Sept., 1967], No. 42403/67. Heading F2A. A hydrodynamic bearing comprises electromagnetic means consisting of radially-arranged polepieces 4a-4f and windings 5a-5f surrounding a magnetically-permeable cylinder 9; this arrangement causes vibration of one bearing member 8 relative to the other 6 in a direction which includes a component normal to the bearing surfaces such that there is an increase in pressure in the gas film between the bearing surfaces which maintains the bearing clearance. Adjacent pairs of polepieces may be wired in series such that they are of opposite polarity, each pair being connected to each phase of a three-phase A.C. supply.
Patent GB-1234057-A (GB)
IPC: C08L61/20
Filed: 1968-10-16
Abstract: 1,234,057. Stabilizing oxymethylene polymers by addition of a #-aminolactamide. BADISCHE ANILIN- & SODA-FABRIK A.G. ]6 Oct., 1968 [17 Oct., 1967 (2)], No. 48967/68. Heading C3P. Compositions comprise an oxymethylene polymer and a stabilizing compound of formula where R 1  is H, OH, NR 2 R 2 , -CH 2 -CH(OH)- CONH 2 , in which m is 1 to 3 and n is 1 or 2, or m is 1 and n is 1 to 3, or in which m + n is 1 to 5 and m is 1 to 5, and R<SP>2</SP> is H or CH 2 .CH(OH)-CONH 2 . Phenolic antioxidants and a polycondensate of isophthalic diamide, a cyclic -N,N<SP>1</SP>- alkylene urea having 2 to 5 carbon atoms, and formaldehyde may also be included. In the examples, trioxan-1,3- dioxolan copolymers treated with NaF are stabilized with nitrilotrilactamide or ethylene diamine tetralactamide and a conventional bisphenol.
Patent GB-1250694-A (GB)
IPC: H04N1/36
Filed: 1969-12-02
Abstract: 1,250,694. Facsimile apparatus. GRAPHIC SCIENCES Inc. 2 Dec., 1969 [4 Dec., 1968], No. 58869/69. Heading G4H. [Also in Division H2] Facsimile transmitter and receiver drums 16 are each synchronized with their own, local, "clocks" 36 and to produce synchronism between transmitter and receiver the respective "clocks" are started at the same time by a single, transmitted, start pulse SS. The object is to avoid inaccuracies due to phase shifts that can arise in continuously transmitted synchronizing pulses. Transmitter and receiver circuits are identical and comprise an oscillator 34 which energizes a synchronous driving motor 14 via a frequency divider 30 whose output can be varied by effectively adding or subtracting pulses produced in "one-shot" circuits 70, 72 according to the phase relationship of the drum relative to the clock pulses. The drum position is indicated by pulses produced by a photo-cell 26 when light from a source 24 is reflected on to it by a mirror 22 on the drum. Comparison is made in a "decoder" 40 which comprises coincidence gates to produce an output on T 1  ... T 3  or T 5  according to the phase error. The arrangement is such that, for errors up to 270 degrees the basic frequency from 30 is increased to "overspeed" the motor; as the error diminishes the frequency is reduced in steps until the error is within a prescribed tolerance, when the motor is driven at its "normal" speed and the synchronizing system is "locked out". If the error is 270 degrees or higher the pulse length from "one shot" 72 is lengthened (by non- conduction of transistor 96 to insert extra resistor 92b in R-C circuit 92a, 94) and this has the effect of blocking some of the driving pulses from divider 30, thus reducing the motor speed.
Patent GB-1252789-A (GB)
IPC: B65D63/08
Filed: 1969-10-24
Abstract: 1,252,789. Fastenings. AMERICAN ALUMINUM CO. 24 Oct., 1969 [24 Oct., 1968], No. 52212/69. Heading E2A. [Also in Division F2] A strap-tensioning buckle comprises a sheet metal strap-attachment plate A and a straptensioning lever B pivoted to it and having a strap-guiding bar 8 and a strap-tensioning bar 7, all folded from sheet metal. The two elements have folded-up side walls mutually pivoted on rivets 4. Folded down end 7a has ears 13 held by dents 20 in the side-walls 5, for strength. Alternatively bevelled edges on the end 7a serve a similar purpose. One end of the strap is secured through hole 2 in the plate A as shown in Fig. 9, and the other end C is threaded round guide bar 8 and under tensioning bar 7, Fig. 9, so that when the lever is pulled to the position shown in Fig. 10, an over-centre tensioning force is produced and projections 20 engage sockets 21 in the plate A to hold the lever in its tensioned position.
Patent GB-1257253-A (GB)
IPC: B21D11/07
Filed: 1969-02-26
Abstract: 1,257,253. Bending tubes. HILGERS MASCHINENUND APPARATE-BAUANSTALT m.b.H. 26 Feb., 1969 [2 March, 1968], No. 10257/69. Heading B3E. In an apparatus for forming sinuously bent tubing a tube 10 is clamped on one side 13 of a former 11 which is rotated in one direction 18 to bend the tube about a forming surface 15, the tube engaging a slide rail 17 to prevent movement of the unbent part of the tube about pivot 12, the tube is displaced a distance corresponding to the length of straight section between two successive bends, clamped to the opposite side 14 of the former and the former rotated in the opposite direction to form a bend of opposite hand to the first bend. The clamp 16 may be detachable or swingable about the axis of rotation 12 of the former 11 for use on the surface 14. Slide rails 17 (22), Fig. 3 (not shown), are provided which alternately rest against the side of the tube 10 opposite the former to prevent its rotation as the former rotates. The slide rail not in use is retracted from its operating position. The former may be lowered and moved from one side of the tube 10 to the other, or the tube 10 lifted across a fixed former for making alternate bends.
Patent GB-1258543-A (GB)
IPC: C08L1/08
Filed: 1970-04-08
Abstract: 1,258,543. Reverse osmosis membranes. WESTINGHOUSE ELECTRIC CORP. 8 April, 1970 [13 May, 1969], No. 16599/70. Heading B5B. [Also in Division B1] Semipermeable membranes consist of a foraminous layer of polymeric, film-forming cellulosic material with some lipids admixed. Preferred cellulosic materials are cellulose esters and ethers, particularly cellulose acetate, cellulose acetate-butyrate, cellulose propionate and ethyl cellulose and preferred lipids are glycerol triesters, formed with carboxylic acids having from 2 to 9 carbon atoms, the three acid residues attached to one glycerol residue being the same or different. Advantageously, the lipid is triacetin. The lipid is preferably present to an amount between 0À5 and 9% by weight of the cellulose film-forming material. The films, which may be flat or tubular, may be formed by casting from solution, the lipid being present in a concentration of at least 0À1% by weight of the solution and a swelling agent being also present. When the film is cast from the above-mentioned preferred materials, the solvent used may be one of acetone, methyl ethyl ketone, ethanol and methanol. The swelling agent is preferably formamide, triethyl phosphate, tetrahydrofurfuryl phosphate ormagnesium perchlorate, formamide being the most advantageous. After casting, the film is dried, preferably in air, and then leached, preferably in a water bath, and thereafter may be cured at a temperature up to 200 F. The films give a better performance in desalination tests than lipid-free films in that a greater flux of water is possible at similar solute rejection levels.
Patent GB-1265406-A (GB)
IPC: B22F3/20
Filed: 1969-06-16
Abstract: 1,265,406. Consolidating scrap; extruding. MANNESMANN A.G. 16 June, 1969 [9 July, 1968], No. 30356/69. Headings B3H and B3P. [Also in Divisions C6-C7] A profiled article is made by extruding a block of compressed metal chips of nickelchromium-iron alloy at a temperature above the recrystallization temperature of the metal while protecting the metal from oxidation. The chips can be flakes or fibres and the article can be wire or tube. The volume of the chips is 60-85% of the volume of the block. The chips are cleaned to remove impurities although fats , oils &c. which vaporize on heating need not be removed. The chips are then preferably oxidized by annealing in air. After compaction the block is annealed in a vacuum or reducing atmosphere and may be subjected to carburization or nitriding. Metal powder may be added to the chips with an adhesive, e.g. stearic acid or molasses. The powder may be up to 80% of the volume of the chips and may be the same metal as the chips, e.g. copper, nickel or soft iron. In one example 18/8 Cr/Ni steel chips are compacted, welded in a soft iron casing and extruded at 1200‹ C. In a second example the chips are mixed with steel power. The composition of the powder may be slightly different to that of the chips. The extruded product may be further reduced.
Patent GB-1265608-A (GB)
IPC: B29D29/06
Filed: 1970-04-20
Abstract: 1,265,608. Making conveyer belts. CONTINENTAL GUMMI-WERKE A.G. 20 April, 1970 [19 April, 1969], No. 18708/70. Heading B8A. [Also in Division C3] A conveyer belt 5 manufactured from natural or synthetic rubber mixtures and reinforcing plies, e.g. continuous steel wire cables is vulcanized in press 1. The belt, completely enveloped by webs 8, 8a of parting means, e.g. silicone treated paper, is fed via rollers 14 to guide rollers 17 and forms several compensating loops 15, in which dancing rollers 16 are inserted. A separate compensating loop 18 is formed after the belt passes through clamp 13. Dancing roller 19 may be located so that, with clamp 13 closed, a stretching tension acts on the belt. On completion of vulcanization, press 1 opens and the movement of plate 13 produces a switching impulse for rollers 10 which draw the belt out of the press. Subsequent sections of the belt, with clamp 13 closed, are drawn out of loop 18 into the press. A switching impulse produced by roller 19 in the upper position causes 13 to open and clamp 12 to close, whereby a further length of belt is supplied from loop 15. Squeeze rollers 10 automatically shut down after a belt section corresponding to the length of the press has been drawn forward, thus initiating the closing stroke of the press. A plurality of belts may be fed simultaneously to the press.
Patent GB-1288537-A (GB)
IPC: B41J29/18
Filed: 1971-07-29
Abstract: 1288537 Selective printing CREED & CO Ltd 29 July 1971 35645/71 Heading B6F In order to raise a continuously rotating type-wheel 1 to the printing position as it is moved across a page by a type-carriage 3, a grooved wheel 4 integral with the type-wheel co-operates with a bail bar 6 mounted on bellcrank levers. A reciprocating member (10, Fig. 2) which forms part of the type-carriage drive performs one reciprocation for each step-wise movement of the carriage. During each reciprocation, member (10) pushes the arm 9 of the bell-crank causing bail-bar 6 to rise. An electromagnetic latching device (12, Fig. 2) maintains the bell-crank in the raised position if desired. In the lowered position of the typewheel 1, the line printed is visible.
Patent GB-1295308-A (GB)
IPC: A23G3/26
Filed: 1970-04-15
Abstract: 1295308 Glove boxes COMMISSARIAT A L'ENERGIE ATOMIQUE 15 April 1970 [29 April 1969] 17984/70 Heading B4Q [Also in Division E2] A flexible glove or sleeve 3 is fitted into a collar 8 at the inner end of the access port 2 of a radio-active enclosure by means of a parallelogram linkwork 34, 35 which may be expanded and axially moved by the relative or joint movement of a pair of tubes 18, 19 by means of handles 24, 29 or by hydraulic or electric control. The rim A of the sleeve is articulated, Fig. 6, so that when folded out it fits into the collar 8 and stays there. To replace a sleeve with a new one, it is first slid forward from position I to II, the device is withdrawn and a new sleeve with its rim retracted is placed on the carriers 33 of the linkages, this is then placed behind the old sleeve in the collar, and then moved forward to eject the old sleeve into the enclosure. These steps are performed by alternate rotation of handles 24, 29.
Patent GB-1297292-A (GB)
IPC: H01Q15/00
Filed: 1970-11-11
Abstract: 1297292 Filters NIPPON TELEGRAPH & TELEPHONE PUBLIC CORP 11 Nov 1970 [11 Nov 1969 11 June 1970] 53593/70 Heading H1W [Also in Division H4] A frequency group branching filter device comprises a filter 57, Fig. 1, which is disposed in a beam forming region between the aperture of an aerial 53 and its feeder means 56. Said filter consists of a plurality of laminar dielectric elements, each having a thickness of a quarter wavelength at the central frequency of a highfrequency group of signals, which are to be separated from a low frequency group of signals. The elements of the filter have at least two different dielectric constants. As described, the aerial is of the Cassegrain type with a main reflector 51 and a sub-reflector 52. Waves of the low frequency group (which may, for example, comprise a 4GHz received band and a 6GHz transmitted band) pass through the filter 57 to or from a horn 55. Separation of the lowfrequency components is effected by suitable filters in the waveguide feeding the horn 55. Waves of the high-frequency group (which may, for example, comprise an 18GHz received band and a 26GHz transmitted wave) are reflected by the filter 57 to or from a horn 54. Separation of the high-frequency components is effected by suitable filters in the waveguide feeding the horn 54. The filter 57 comprises three laminµ each with a thickness substantially equal to a quarter wavelength at the central frequency of the high-frequency group, and having different dielectric constants. Materials which may be used are polystyrene, fused quartz, glass, and poly-2,5-dichlorostyrene. It is also possible to have laminµ of air (or "free space"), for example, five glass elements may be disposed with equal gaps between them (Fig. 3, not shown). In another filter three elements are integrally laminated, the central element being of different material from the outer elements. A plurality of ribbon-shaped dielectric elements of still another material are embedded at equal intervals in said outer elements (Fig. 6, not shown). A filter is also described in which a set of five air spaced glass elements 57b, Fig. 7, is supplemented on each side by a group of dielectric elements 91, 92 having thicknesses equivalent to a quarter wavelength at the central frequency of the low-frequency group, in order to improve impedance matching. The angle of incidence, at which beams enter a filter, is preferably less than 30 degrees. In other embodiments, reflectors additional to those shown in Fig. 1 are featured. In the arrangement shown in Fig. 11, the low-frequency group beam from the filter 57 is focused by a paraboloidal reflector 111 to a feed horn 55. The high-frequency group beam is reflected by a plane reflector 113 to a paraboloidal reflector 112 and is then focused to a feed horn 54. In another arrangement, a single paraboloidal reflector is used, between the sub-reflector and the filter (Fig. 10, not shown).
Patent GB-1304910-A (GB)
IPC: H04L25/03
Filed: 1970-08-05
Abstract: 1304910 Equalizers STANDARD TELEPHONES & CABLES Ltd 5 Aug 1970 37732/70  Heading H4R Receiving circuit for pulses, e.g. in a regenerative repeater in a pcm transmission system, has a variable equalizer the attenuation and slope of which is controlled by the peak value of the detected signal. Fig. 2 shows the variable equalizer comprising a ladder network of CR sections with diodes D1 to D6 connected in series in a D.C. control current path so that the attenuation and slope of the equalizer is dependent on the control current derived by peak detection of the equalizer output.
Patent GB-1308829-A (GB)
Title: Flame monitoring equipment
IPC: F23M11/04
Filed: 1970-06-18
Abstract: 1308829 Photo-electric flame monitor PEAK TECHNOLOGIES Ltd 2 Sept 1971 [18 June 1970] 29681/70 Heading G1A A photo-electric flame monitor comprises a photo-electric sensor viewing the flame through a filter, the transmission characteristics of the filter and the spectral sensitivity of the sensor defining a range of wavelengths which includes characteristic wavelengths in the flame produced by each of two fuels, so that the monitor may be used when a furnace is operated using either fuel. In Fig. 2, light from a flame passes through lens 26, via nickel oxide filter 29, which defines one end of the range by cutting out all light above about 0À4Á, to the cadmium-antimony cathode of phototube 31, the spectral sensitivity of which cuts off at about 0À3Á. The sensitive range of the instrument thus includes the 0À32Á peaks of gas, coal and oil flames. The photo-tube is connected to a Darlington pan transistor amplifier, connected to alarm circuitry. This may include the frequency sensitive circuit used in Specification 1214521 so that only high frequency flame fluctuations are effective. For gas flames, a frequency of 250 Hz and for coal and oil 1500 Hz is considered. The monitor may be provided with an extra broad band electric lamp in the sighting tube for checking the alarm facility.
Patent GB-1318187-A (GB)
Title: Manufacture of ceramic ware
IPC: B28B13/02
Filed: 1969-08-02
Abstract: 1318187 Injection-moulding of ceramics SERVICE (ENGS) Ltd 27 July 1970 [2 Aug 1969 27 Dec 1969 25 Feb 1970] 38815/69 62995/69 and 9072/70 Heading B5A Apparatus for injection-moulding moist clay to form ceramic articles e.g. cup-handles of earthenware or china comprises two mould halves 18, Fig. 2, defining a mould cavity 27, Fig. 3, a chamber 42 having an outlet at nozzle 43 and able to receive a charge of clay and means e.g. plunger 54 to fluidize and inject the clay into cavity 27. Mould halves 18 are mounted on platens 20 having heaters 22 and being slidable on rods 24. Levers 28 are pivoted at 34 to arms 35 on platens 20 and at 30 to machine frame 10 and carry air diaphragm motors 38, the piston rods 37 of which are tied together and to the machine frame 10 by rod 39. Injection block 44, Fig. 3, is pivotable at shafts 46 between injection position of Fig. 3 and 90 degrees anticlockwise for charging and article removal. Block 44 contains chamber 42 into which plunger 54 extends for injecting clay through nozzle 43 into cavity 27, excess passing through the mould outlet and engaging end 56 of finger 58 connected through bushes 60, 68 and shafts 62, 64 to block 44, the end 56 also serving as article-retaining means. After rotation of block 44 from the injection position, blades (86, Figs. 5, 6 not shown) on arms 84 and operated through toggle mechanism (90-94) by cylinder (88) cut the article from nozzle 43 and finger 58 to fall on to conveyer (96), operated stepwise.