baber/WOPTO huggingface dataset:
Patent GB-1018357-A (GB)
Title: Improvements in switches for direction indicators of mechanically propelled vehicles
IPC: B60Q1/42
Filed: 1964-11-13
Abstract: 1,018,357. Direction indicator switches for road vehicles. S.W.F.-SPEZIALFABRIK FUER AUTOZUBEHOER GUSTAV RAU G.m.b.H. Nov. 13, 1964 [Nov. 16, 1963], No. 46273/64. Heading G4Q. A direction indicator switch comprises an operating lever 3 pivoted at 4 to the switch and surrounding the steering column 7, the inner ends of the lever engaging a locking and return member 8 which is displaceable radially. In the arrangement shown in Fig. 1 the member 8 is held in position by a spring-loaded ball 13 engaging locking recesses 2 in the casing. When the lever 3 is rotated, one of two friction members 14 on the member 8 engages the steering column so that return movement of the column after making a turn restores the switch to its central position. In a modification, Fig. 3 (not shown), the members 14 are replaced by cam surfaces on the member 8 which co-operate with a pin rotating with the steering column, and in a further modification, Fig. 4 (not shown), the ball is replaced by a roller. In further modifications, Figs. 6-9 (not shown), a leaf spring provides the locking recesses 2 and also acts as a locking force on the ball or roller instead of the separate spring 12.
Patent GB-1274205-A (GB)
Title: Control circuits for clothes washing and spin-drying machines
Inventor: EASTALL MARTIN HAROLD
IPC: H02P7/292
Filed: 1968-09-30
Abstract: 1,274,205. Control of D.C. motors. BRITISH DOMESTIC APPLIANCES Ltd. 29 Sept., 1969 [30 Sept., 1968], No. 46325/68. Heading H2J. [Also in Division G3] A series motor 1, which drives a washing machine, is supplied from an A.C. source through a thyristor 2 having a triggering circuit A associated with feed-back circuits B1, B2, for maintaining the speed at a low value. A circuit D over-rides the feed-back circuits to increase the speed to a higher value, a transistor 19 being adapted to reduce the power supplied to the motor irrespective of the condition of the feedback and speed-control circuits. Capacitor 12 is charged through transistor 14 during alternate half-cycles of the supply voltage until transistors 13, 14, are rapidly saturated so that Zener diode 15 breaks down and capacitor 32 discharges into the gate of the thyristor 2, supplying the motor with a D.C. pulse. The negative feed-back circuit B 1 comprising a tachogenerator 18 applies a speed responsive signal to transistor 19<SP>1</SP>, which also receives a positive feed-back signal representing the motor current from circuit B2, whereby the speed is maintained at a pre-set value suitable for washing or rinsing operations. A camactuated switch 29 periodically reverses the motor 1 during the washing period. At the end of this period, a timer motor 6 closes a switch to energize a pump motor 10, and timer contacts C are closed to reduce the signal applied to transistor 19 to zero. The motor 1 then accelerates rapidly for the spinning operation. Capacitor 44 begins to charge until transistor 43 conducts to raise the base potential of transistor 19. Triggering pulses from the circuit A to the thyristor 2 are thereby suppressed to de-energize the motor 1 until contacts C are re-opened. The charging rate of capacitor 44 is selected to provide the required spin duration. When contacts C open, the capacitor 44 discharges, transistor 43 switches-off and the base voltage of transistor 19 decreases so that the motor 1 accelerates smoothly from rest to the running speed determined by the feed-back circuits. A switch 41, in parallel with the transistor 43, is actuated by a programme timer to de-energize the motor 1. In a modification, a tachometer generator applies a decreasing voltage with increasing speed to the base of the transistor 19 for decreasing the power supplied to the motor 1. When a mechanically-actuated switch is open the motor is de-energized, subsequent closure of the switch effecting smooth acceleration of the motor from rest, Fig. 2 (not shown).
Patent GB-1492524-A (GB)
Title: Internal combustion engine
IPC: F02M33/00
Filed: 1974-12-31
Abstract: 1492524 Inlet and exhaust passages C L GOODACRE 31 Dec 1974 [4 Oct 1973] 46384/73 Heading F1B Annular shoulder 13 in the inlet passage 10 of an I.C. engine directs any fuel condensate carried along the passage walls inwardly into the air/fuel stream. The shoulder is formed by a ring 15 positioned between the cylinder head 3 and the valve seat insert 6, which itself has a portion 16 which projects into the combustion chamber and directs any fuel droplets which have not been entrained in the air/fuel stream, away from the adjacent cylinder wall. A similar construction is provided in the exhaust gas passage so that unburnt fuel or lubricating oil droplets are directed into the exhaust gas stream. Swirl is imparted to the induced mixture stream by a helical vane 17 provided in the inlet passage. To enhance postcombustion of the exhaust gases a thin-walled sleeve 21 of heat-resistant metal is positioned in the exhaust passage 22. The sleeve has outwardly projecting portions by which it is spaced about 1 mm. from the internal surface of the passage.
Patent GB-1151759-A (GB)
Title: Scanning or Reading Device for the Optical Sound Track of a Film.
IPC: G11B7/00
Filed: 1966-10-17
Abstract: 1,151,759. Optical sound play-back apparatus. SOC. INTERNAZIONALE FONOVISIONE S.p.A. 17 Oct., 1966 [18 Oct., 1965], No. 46409/66. Addition to 986,240. Heading G5R. In a pick-up device for sound reproduction comprising light production means linearly and angularly adjustable with respect to a mounting through a support on which the light production means and a lens are mounted, generally similar to the device described in Specification 986,240, a carrier for the light production means is in the form of a block 51 which is removably fixed in an opening 50 in the support 25a in rigid relation to the lens 26.
Patent GB-976849-A (GB)
Title: Screws
IPC: F16B25/10
Filed: 1963-11-26
Abstract: 976,849. Self-tapping screws. ILLINOIS TOOL WORKS Inc. Nov. 26, 1963 [Nov. 26, 1962], No. 46697/63. Heading B3N. A self-tapping screw has an entering end 2. Fig. 6, a trailing portion 4 and an intermediate portion 6. End 2 has a ridge 14 formed by flat surfaces 10 and has two slots 20 forming surfaces 22, 24, substantially at right angles, and cutting edges 28. Surface 24 is a cylindrical arc, or in a modification, Figs. 7 and 8, surface 24a is flat. The threads 18, Fig. 1, have flat crests on the intermediate portion 6, or, in the modification of Figs. 7 and 8, the thread crests are not flattened.
Patent GB-1318758-A (GB)
Title: Combined x-ray film changer and x-ray transducer assembly
IPC: G03B42/02
Filed: 1970-10-01
Abstract: 1318758 X-ray apparatus COMPAGNIE GENERALE DE RADIOLOGIE 1 Oct 1970 [10 Oct 1969] 46838/70 Heading H5R X-ray diagnostic apparatus includes both a film changer and an X-ray image transducer, to permit either the making of a radiograph, or radioscopic examination, the film feeding, film clamping and cutting, and film ejecting operations being controlled by separate motors Ml, M2 and M3. Mounted within the light-tight housing 1 is a magazine 5 in which a roll of film may be placed to be fed by rollers 6, 7, 8, 9a and 9b into the space between a pair of X-ray intensifying screens 10 and 11, of which screen 11 is movable towards and away from screen, with linked movement of film cutter blade 12b against blade 12a, and of roller 14 away from ejection roller 13, to cut the film, and to release the tension on it, when it is gripped between the two screens. After exposure, the film is fed by rollers 13, 14 and 15 into the light-tight receptacle 16. Radioscopic examination is by means of a TV camera 4 and X-ray image intensifier 2, upon the screen of which the X-rays are incident through the screens 10 and 11. The energization of the X-ray tube and the motors M1, M2, and M3 may be programmed to ensure that, for example, every fifth X-ray pulse provides a radiograph.
Patent GB-1179557-A (GB)
Title: Improvement in Permeable Refractory Products
Inventor: KOERNER OTTO
IPC: C04B38/00
Filed: 1966-10-19
Abstract: 1,179,557. Porous refractions. DIDIER WERKE A.G. 19 Oct., 1967 [19 Oct., 1966], No. 46850/66. Heading C1J. A porous body of a cold crushing strength of at least 200 kg./cm.<2> consists of a coarse refractory sintered with less than 10% of a binder and has pores of cross-section not less than 0-05 mm. and a gas permeability of at least 100 Nanoperm (defined). Specified coarse materials are mullite, sintered magnesite and corundum, whilst binders are (1) clay and aluminium dihydrogen phosphate for mullite and corundum, and (2) caustic MgO with either or both boric acid and iron oxide.
Patent GB-1259830-A (GB)
Title: An improved key cutting machine
Inventor: STOCKALL DEREK JOHN
IPC: B23C3/35
Filed: 1969-09-24
Abstract: 1,259,830. Key-cutting. V. L. CHURCHILL & CO. Ltd. 21 Aug., 1970 [24 Sept., 1969], No. 47070/69. Heading B3K. A key-cutting machine comprises an anvil 10, a clamp 13 for clamping a key blank 11 to the anvil, rotary cutters 15, 16, whose movement longitudinally of the blank is controlled by a first cursor 37, which co-operates with a first replaceable code plate 40, and a second cursor 47, which co-operates with a second replaceable code plate 47, so as to control the transverse movement of the blank relative to the cutters, and therefore the depth of slot. Cutters 15, 16 are rotated through intermeshing gears 19 rotated by an electric motor which drives a belt and pulley drive 22, or by a handle 23, and are moved longitudinally against springs 26 by a pivoted lever 44, actuated by cursor 37. Anvil 10 is supported on a slide 28 movable laterally by a handle 62 connected to a shaft 30 which carries an arm 31 located in a recess 32 of the slide. A pin 33 carried by slide 28 extends into a V-slot 34 in a longitudinally movable slide 35, and the longitudinal position of the slide, determines the amount of lateral movement which can be imparted to the key by handle 62. Movement of slide 35 is controlled by cursor 47. The machine can be calibrated by means of a master key, and the linkages between the cursors and the setting means can be adjusted by the adjustment of screws 42, 52.
Patent GB-1443009-A (GB)
Title: Method of producing a catalyst based on a cation-exchange resin
IPC: B01J37/00
Filed: 1973-10-09
Abstract: 1443009 Porous ion-exchange resin composiions D N CHAPLITS V P KAZAKOV E G LAZARIANTS V F CHEBOTAEV M I BALASHOV and L A SERAFIMOV 9 Oct 1973 47180/73 Headings C3C and C3P [Also in Divisions B1 and B2] Porous catalysts for organic reactions based on cation-exchange resins are prepared by mixing a cation-exchange resin with a thermoplastic material, a plasticizer and water and extrusion moulding the resulting mixture at temperatures above the melting point of the thermoplastic material. Porosity is induced by adding water during mixing and/or using a water-containing cation-exchange resin. To enhance the porosity of the catalyst the mixture may be simultaneously moulded and stretched, and may contain mineral oils, ester plasticizers and non-ionic emulsifiers which may subsequently be extracted by treating with a solvent. The exchange capacity may be increased by swelling the product, preferably after drying, with a chlorinated aliphatic hydrocarbon solvent and treating with a sulphonating agent, e.g. concentrated sulphuric acid or chloro-sulphonic acid followed by a hydrolysing agent. Examples describe the preparation of catalysts by extruding (1) sulphonated S/DVB copolymer, polypropylene, oil and water and treating with toluene; (2) sulphonated S/DVB copolymer, polypropylene, dioctyl phthalate and water and treating with hexane; and (3) sulphonated S/DVB copolymer, polypropylene, dibutyl phthalate and water and treating with hexane.
Patent GB-1470192-A (GB)
IPC: G11C27/04
Filed: 1974-03-18
Abstract: 1470192 Charge coupled devices PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 18 March 1974 [19 March 1973] 47194/76 Divided out of 1470191 Heading H1K The subject-matter of this Specification is included in the Specification of Specification 1,470,191 from which it has been divided but the claims relate to a charge coupled device for operation with two-phase clock voltages comprising a semi-conductor layer of one conductivity type of such doping and thickness that it can be fully depleted without avalanche multiplication occurring, and having a plurality of transfer electrodes on one face connected in two groups to which the clock voltages are respectively applied, the device being so constructed that on application of the clock voltages an asymmetrical potential distribution occurs in parts of the layer associated with the electrodes in each group in order to ensure unidirectional charge transfer.
Patent GB-1031429-A (GB)
Title: Remote control device
IPC: A63H27/00
Filed: 1963-12-03
Abstract: 1,031,429. Kites and model aircraft. H. L. HULL, and D. M. HULL. Dec. 3, 1963, No. 47628/63. Heading B7W. A control device, e.g. for kites, comprises a control member 60 (Fig. 6, not shown) having a plurality of line guides 69, 70, 71, control lines 16, 17, 18 for connection to a kite, and reels 23, 24, 25, mounted on the member 60 in coaxial relation, means 81 for simultaneously rotating the reels, and further means for rotating the reels relative to each other. The member 60 comprises a vertical arm 61 and two cross arms 62 and 63. Opposite ends of the cross arms are upturned to provide bearings 64 for a shaft 80. Reels 23, 24 and 25 are frictionally mounted on the shaft 80 and extend into notches 66, 67 and 68, the ends of which serve as axial stops for the reels. Axial movement of the shaft 80 is limited by collars 82. By rotating crank 81, the shaft 80 and reels 23, 24 and 25 are rotated to reel in or pay out lines 18, 16 and 17. Individual reels may be rotated on shaft 80 by hand. Various movements of the member 60 enable the kite to be moved to the left or right climb, dive or loop.
Patent GB-1415417-A (GB)
Title: Hydrotreating of petroleum distillates using shaped catalyst prtticles
IPC: B01J29/076
Filed: 1973-10-12
Abstract: 1415417 Shaped hydrotreating catalyst AMERICAN CYANAMID CO 12 Oct 1973 47899/73 Heading B1E [Also in Divisions C4 and C5] A catalyst for use in hydrotreating petroleum distillates comprises porous, but non-hollow; particles having a polylobal cross-sectional shape characterised by a concavity index greater than 1.0, a void fraction of 0.25 to 0.60, a ratio of geometric volume to geometric surface in the range 0.001 to 0.042 inch, a catalytic surface area greater than 100 m<SP>2</SP>/g, a catalytic pore volume of 0.35 to 0.65 cc/g which results from a major portion of pores of diameter 40 to 90 when measured with mercury up to 50000 psi abs. and a contact angle of 140, and when containing more than two lobes at least 15% of the points within the particles are greater than 0.015 inch from the particle surface and a composition cmprising a major portion by weight of alumina, 5 to 25% molybdenum oxide and 1-8% of cobalt and/or nickel oxides. In examples catalyst particles are formed by extruding alumina powder which has been moistened with aqueous ammonium molybdate and cobalt nitrate in "dumbell" or "3 leaf clover" cross sections and presulphiding. The catalyst particles can also have cross sections corresponding to a Figure of eight and tetralobal rods.
Patent GB-1132964-A (GB)
Title: Moulding of polymeric materials
Inventor: RILEY JACK LENDYMORE
IPC: B29B13/00
Filed: 1964-11-25
Abstract: 1,132,964. Moulding polyimides. IMPERIAL CHEMICAL INDUSTRIES Ltd. 25 Nov., 1965 [25 Nov., 1964]; No. 47977/64. Heading B5A. [Also in Division C3] Moulded polyimide articles are made by compacting an aromatic polyamic acid powder and heating the compact at 250‹ to 400‹ C. to sinter it and convert the polyamic acid to polyimide. Compacting may be effected at a pressure of 1À5 to 6 kg/mm.<SP>2</SP> while sintering may also be effected under pressure which is however at least an order of magnitude less than the compacting pressure e.g. 1À4 to 2À1 kg/cm.<SP>2</SP>. The polyamic acid powder may be preheated at 60‹ to 100‹ C. in vacuo; it may be mixed with or be an outer layer on a core of polyimide but at least 5% of the powder should be polyamic acid. In an example powdered polyamic acid from pyromellitic dianhydride and bis-(4-aminophenyl) ether is heated at 80‹ C. in vacuo for 5 hours and compressed in a cylindrical mould at a pressure of 4À7 kg/mm.<SP>2</SP> by a cylindrical ram. The compact, mould and ram are then placed in an oven at 350‹ C. for one hour while a pressure of 1À75 kg/cm.<SP>2</SP> is maintained by the ram.
Patent GB-1124134-A (GB)
Title: Improvements in or relating to the mountings of electrical heating elements
IPC: F24H3/00
Filed: 1965-11-11
Abstract: 1,124,134. Mounting heating elements. NOBO FABRIKKER A.S. 11 Nov., 1965 [13 Nov., 1964], No. 47993/65. Heading H5H. A heating element is mounted by means of at least one hinged attachment device which pivots to accommodate thermal expansion of the element. The embodiment shows a convector heater having an apertured casing 1 within which a heating element 5 is mounted by means of a rigid bracket 9 near one end and a hinge 10 intermediate the rigid bracket and the other end. The hinge consists of a rectangular plate of metal two opposite edge portions of which are bent to provide pairs of tongues 11, 12, the tongues in each pair extending in opposite directions. The pairs of tongues extend through slots respectively in the element and the casing. In a modification, the rigid attachment is at the centre of the heating element and hinged attachments are provided on either side.
Patent GB-1012372-A (GB)
Title: Improvements in the production of trioxane
Inventor: BAMFORD WILLIAM RANDALL
IPC: C07D323/06
Filed: 1963-12-05
Abstract: Trioxane is made by heating aqueous formaldehyde in the presence of a known trioxane conversion catalyst, evaporating from said mixture a mixture of trioxane, formaldehyde and water, introducing said evaporated mixture into a fractionating system, at a position intermediate of the reboiler and vapour exit, in which system a trioxane rich fraction collects at the top and a formaldehyde rich fraction collects at the bottom in the reboiler, contacting the formaldehyde rich fraction in the reboiler with a catalyst, which is preferably insoluble in the fraction and is especially an acidic ion exchange resin, known for the conversion of formaldehyde to trioxane, e.g. by stirring therewith or circulation through a static catalyst mass, feeding a vapour mixture from the reboiler to the fractionating system and removing the trioxane-rich fraction from the vapour exit of the fractionating system.  Suitable insoluble catalysts named include commercially available ion exchange resins.  The examples describe the operation of the process with reference to a flow sheet (not shown) on a continuous basis, wherein fresh formaldehyde and recycle from reboiler are fed into the first equilibrating vessel at a rate sufficient to replace formaldehyde converted to trioxane removed. Comparative yield data wherein the second equilibration in the reboiler does not take place is included.
Patent GB-1140146-A (GB)
Title: Improvements in foamed copolymer articles
Inventor: MATHEWS CARL FRASER
IPC: C08F22/04
Filed: 1966-10-28
Abstract: 1,140,146. Extrusion of foamed plastics. IMPERIAL CHEMICAL INDUSTRIES Ltd. 2 Oct., 1967 [28 Oct., 1966], No. 48487/66. Addition to 1,088,383. Heading B5A. [Also in Division C3] A film or board of foamed copolymer is produced by extruding a composition comprising a copolymer and a blowing agent through a film or board-forming die in which the composition is produced by the steps of forming a solution of styrene and maleic anhydride in a solvent which will not inhibit the copolymerization, carrying out the copolymerization and, while forcing forward in a vented extruder, removing at least part of the solvent by evaporation. In an example (1) a solution of styrene in methyl ethyl ketone was fed to a twin-screw extruder with a solution of maleic anhydride and ditert.-butyl peroxide in methyl ethyl ketone, after complete polymerization the solution was fed to a single-screw extruder in which it was partially devolatilized, extruded through an annular die and foamed; the emergent film was blown to a bubble, collapsed between nip rollers, slit, opened out and then compressed between rollers.
Patent GB-1236888-A (GB)
Title: Process for producing polyethylene terephthalate
Inventor: VENTURA JOHN JOSEPH
IPC: C08G63/86
Filed: 1969-10-03
Abstract: 1,236,888. Bis (#-hydroxyethyl) terephthalate polycondensation catalyst. M. & T. CHEMICALS Inc. 3 Oct., 1969 [7 Oct., 1968], No. 48688/69. Heading C3R. Polyethylene terephthalate is made by polymerizing bis (#-hydroxyethyl) terephthalate using as a catalyst an antimony alcoholate where R 1 , R 2  and R 3  are alkyl or cycloalkyl radicals which may be substituted by inert substituents e.g. alkoxy, halogen nitro or ester groups. An ester interchange reaction between dimethyl terephthalate and ethylene glycol using calcium or zinc acetate as a catalyst produces the bis (#-hydroxyethyl) terephthalate.
Patent GB-1441637-A (GB)
Title: Preparation of morphanthridin-6-5h-ones
IPC: B01J27/00
Filed: 1973-10-19
Abstract: 1441637 Morphanthridin-6(5H)-ones SANDOZ Ltd 19 Oct 1973 [20 Oct 1972] 48742/73 Heading C2C Compounds of Formula I in which R 1  and R 2 , which may be the same or different, are each H, F, Cl, Br, or C 1  to C 4  alkyl, are prepared by reacting a compound of formula in which X is Cl or Br, with a compound of formula in an inert solvent and in the presence of a Freidel-Crafts catalyst.
Patent GB-1328031-A (GB)
Title: Phase or frequency comparator using logic gates
IPC: H03L7/089
Filed: 1971-10-21
Abstract: 1328031 Phase control systems; transistor amplifiers MOTOROLA Inc 21 Oct 1971 [12 Nov 1970] 48912/71 Headings H3A and H3T  A phase or frequency comparator comprises first and second input coincidence gates 13, 14; a first and a second output coincidence gates 17, 18 and a first, a second and a third control gates 23, 24; 23<SP>1</SP>, 24<SP>1</SP>; 26, the input, output terminals of the various gates being so interconnected that in response to signals f 1 , f 2  applied to input terminals 10, 11, a predetermined D.C. level is obtained at both outputs A, B for a zero input phase difference and a rectangular pulse output at either A or B when phase or frequency difference exists. When the two inputs differ in phase, rectangular pulses having a pulse width determined by the trailing edges of the two signals and indicative of the phase difference appears at one output while a predetermined D.C. level appears at the other output. When the signals differ in frequency, rectangular pulses at the lower frequency repetition rate appears at one output. The NAND gates shown may be replaced by NOR gates or alternatively the control gates 23, 24; 23<SP>1</SP>, 241 may be replaced by one pair of bi-stable multivibrators with the input, output gates 13, 17 and 14, 18 replaced by another pair of bi-stable multivibrators. The frequency/phase comparator described above may be incorporated in a phase lock frequency synthesizer shown in Fig. 2 comprising a programmable divider 100 and a pre-scaler 50. The comparator 60 output is applied to a charge pump 70 which produces positive and negative pulses of fixed amplitude which are integrated in a lead-lag active filter 80 to produce a D.C. error voltage for controlling a multivibrator 90. A transistor amplifier 80 comprises an FET grounded source amplifier 81 followed by a Darlington type amplifier 83. Elements 84, 85 provide feedback for stabilizing the output voltage.
Patent GB-1009789-A (GB)
Title: Modular electronic packaging
IPC: H05K7/14
Filed: 1962-12-31
Abstract: 1,009,789. Two-part couplings. TEXAS INSTRUMENTS Inc. Dec. 31, 1962 [Jan. 26, 1962], No. 49040/62. Heading H2E. [Also in Division H1] Terminals 41 ... 45 on a circuit assembly 30 are held in contact with fixed contacts 111 115 on a support 100 by means of a resilient pad 107 on a slidable member 104, pressure being maintained by the action of a cam 108 between support 100 and member 104. Specification 961,756 is referred to.