baber/WOPTO huggingface dataset:
Patent GB-1534744-A (GB)
Title: Maturation of polyester compositions for viscosity index control
IPC: C08L67/00
Filed: 1976-12-07
Abstract: 1534744 Thickeners for unsaturated polyesters BUDD CO 7 Dec 1976 [8 Dec 1975] 50885/76 Heading C3R A moulding compound comprises (i) an unsaturated polyester having a ratio of hydroxyl to carboxyl groups of from 5À7 : 1 to 0À8 : 1, an acid number of at least 14 and an average molecular weight of from 800 to 5000, (ii) an ethylenically unsaturated monomer, (iii) a curing catalyst and (iv) a thickening system comprising (a) an organic polyisocyanate in an amount sufficient to react with at least 30% but not more than 105% of the hydroxyl groups of the polyester and (b) an oxide or hydroxide of calcium or magnesium in an amount sufficient to react with at least 30% but not more than 75% of the carbonyl groups of the polyester. The composition may also include reinforcing fibres, an inert filler and a mould release agent.
Patent GB-1534745-A (GB)
Title: Silencer on the intake side of a compressor having several sound-damping elements
IPC: F01N1/24
Filed: 1976-12-09
Abstract: 1534745 Silencers for compressors BBC BROWN BOVERI & CO Ltd 9 Dec 1976 [11 Dec 1975] 51492/76 Heading F1B A silencer on the intake side of a compressor 1, e.g. for an exhaust driven turbo-charger, comprises a ring-shaped chamber 7 with annular sound damping elements 4 therein which may be disc shaped (as shown), conical, Fig. 2 (not shown) or curved, and which form therebetween flow passages 9 for guiding air into a convergent manifold leading to the compressor, each element merging into a curved guiding member 10, the total outlet cross-sections of all the flow passages being approximately equal to the average flow cross-section of the manifold. Passages 9 and end passages 11 of approximately half the width of passages 9 are surrounded by filter elements 3. Elements 4, the upstream ends 12 of which are rounded to improve inlet flow are supported by tie bars 5, the distance between them being maintained by spacers 6.
Patent GB-1162236-A (GB)
Title: Improvements to apparatus for Operating the Bars of Level Crossings
Inventor: GRANDI ANTONIO
IPC: B61L29/24
Filed: 1966-11-17
Abstract: 1,162,236. Road signals for controlling traffic. A. GRANDI. 17 Nov., 1966, No. 51516/66. Heading G4Q. [Also in Division E2] Apparatus for the operation of level crossing bars comprises mechanism controlling visual/ audible signals and consisting of a vertical rod 10 activating a rod 15 which at one end transmits an oscillatory movement to the arm of a lever 11 having a hooked arm acting on a toothed pinion 13 which actuates a luminous warning reflector 14, while at the other end of said rod it actuates an arm of a lever 16 whose other arm forms the clapper 18 for a bell 20.
Patent GB-1443215-A (GB)
Title: Electrostatically clamping a semiconductor wafer during device manufacture
IPC: H01J37/317
Filed: 1973-11-07
Abstract: 1443215 Electrostatic holding devices; semiconductor devices MULLARD Ltd 7 Nov 1973 51619/73 Headings H1P and H1K In processing a surface of a semi-conductor wafer which is clamped to a support, the wafer and support are electrically conducting at least adjacent their facing surfaces and a solid dielectric layer between the wafer and the support prevents physical and electrical contact between the facing surfaces; a P.D. being applied between the wafer and the support to clamp them together by electrostatic force across the dielectric layer. Fig. 1 shows a conductive bulk silicon substrate 1 for processing to form IGFETS therein or bipolar transistors and/or diodes in an epitaxial layer therein and deposition of an insulant layer, wherein a dielectric layer 3 is formed on the surface of support 2 on which the wafer is located on a V block 5 insulated from the support 2, with electrical connections to the support and the V block for application of potential, so that electrostatic force across dielectric 3 clamps the wafer in position. The dielectric has high dielectric constant and strength; high thermal conductivity, and low thickness, and may be of glass, ceramic, or, e.g. barium titanate. The wafer may be coated with an ultraviolet or electron sensitive photoresist layer on its front surface; on to which radiation is selectively focussed to produce a required image pattern of exposure, and the wafer is conventionally processed after release (Fig. 2, not shown). Alternatively the wafer 1 may be electrostatically clamped on an insulated support surface 2 and exposed to donor or acceptor ionic bombardment 14 through apertures of a secondary emission suppressing electrode 12, maintained negative relatively to the wafer by connection to support 2 and an earthed electrode 11 defining the cross-section of the ionic beam (Fig. 4). A magnetic field may be applied between support 2 and electrode 12 transversely of the beam to assist in suppressing secondary emission. The ions may be, e.g. neon, and a charge integrator measuring ionic dosage is connected between earth and the wafer over V- block 5. A separate bias source may be connected between electrode 12 and the V-block, or the latter may be interconnected by a Faraday cage over the wafer.
Patent GB-1208839-A (GB)
Title: Electromagnetic vibrators
Inventor: SPURLIN WILLIAM VERNICE
IPC: B06B1/04
Filed: 1968-11-01
Abstract: 1,208,839. Reciprocating motors. FMC CORP. 1 Nov., 1968 [2 Nov., 1967], No. 51917/68. Heading H2A. An electromagnetic impact vibrator comprises a housing 2 having a tubular portion 4 and an end cover 5, an electromagnet 43 mounted inside the tubular portion and secured to the end cover, and an axially movable body 14 connected to the tubular portion through an elastomeric spring 11, 12 and carrying an armature 21 adapted to be attracted by the electromagnet, the latter being energizable at a predetermined frequency so that on energization, the body 14 moves towards the electromagnet against the bias of the spring, and on deenergization, the spring forces the body 14 back in the opposite direction so that a striker 30 on the body strikes an anvil 32 on a base part 3 of the housing 2. An object to be vibrated is secured to the base 3. As shown in Fig. 1 there are two springs 11 and 12; in a modification, Fig. 4 (not shown) either or both of springs 11 and 12 is (are) replaced by a plurality of circumferentially spaced elastomeric blocks (60). The springs may be pre-loaded. Elastomer buffers 28 on the cover 5 limit upward movement of the body 14. The tubular portion 4 and cover 5 may be made of aluminium or synthetic resin and the anvil 32 may be made of steel, rubber or plasticized glass fibre. The electromagnet is energized from an A.C. supply through a diode 70, Fig. 10 (not shown). Coolant gas, e.g. air, passes through ducts 47, 48 in the tubular portion 4 and ducts 52, 53 in the cylindrical body 14. Cooling fins 62, Figs. 5, 6 (not shown) may be arranged on the tubular portion 4 and cover 5. In a modification, Fig. 11, the housing comprising two intermeshing parts 75, 73, the first carrying a core 85 and coil 91 and the second being connected through a single annular spring 80 to an armature 81, the latter carrying a striker 83 adapted to strike an anvil 78. The core 85 is axially movable to adjust the length of air gap 86.
Patent GB-1069600-A (GB)
Title: Engine starter gearing
IPC: F02N15/06
Filed: 1965-12-09
Abstract: 1,069,600. Starter gearing. BENDIX CORPORATION. Dec.9, 1965 [Dec.16, 1964], No. 52307/65. Heading F1K. In a starter gearing of the positive shift type having its pinion gear 26 secured to the driven member 30 of an overrunning dentiled clutch the driven member is biased by spring means toward a driving member 20 threaded on the helical splines 18 of a sleeve slidably 14 but non-rotatably mounted on the starting motor shaft 12, means being provided to disengage the teeth of the driving and driven members in overrunning condition the means comprising centrifugal weights 58 driven by the pinion gear to urge the driving member away from the driven member in response to centrifugal force. As shown an annular thrust ring 54 having an inner conical surface 56 is employed for urging the driving clutch member away from the driven clutch member when acted upon by a plurality of centrifugal flyweights 58. A radially extending hole 62 is formed in each flyweight at an intermediate or mid point closely corresponding with the location of centre of gravity of the weight means for moving the starter gear assembly toward or away from the engine gear 22 may comprise a conventional solenoid, air or hydraulic cylinder actuated lever.
Patent GB-1410952-A (GB)
Title: Data card handling apparatus
IPC: B65H3/06
Filed: 1972-11-15
Abstract: 1410952 Card reader transport system TRUE DATA CORP 15 Nov 1972 [15 Nov 1971] 52850/72 Heading G4M A card reader has a hopper F the base plate 9 has an inclined portion 12 causing the cards C to be feathered so that the lowest card protrudes further than the others and is connected to an agitating motor 14. The cards are jostled so that one edge engages an aligning wall 6 which may be inclined to the vertical with plate 9 perpendicular to wall 6 so that the jostled cards fall against the wall. One end of plate 9 overlies a feed roller 25 which has annular grooves. The end of plate 9 terminates in fingers 35 received in the grooves. Above the cards is a spring 5 and a step 41 forming a restriction allowing passage of only one card at a time. The spring extends into a groove on the roller when no cards are carried on the roller. When plate 9 is at the upper part of its movement the cards are held out of contact with the roller. When the plate is lowered the lowest card is held against the roller by the spring and carried by the roller past a read head R. The spring holds the card against the roller and acts to smooth out wrinkles and prevent flutter. After leaving the read head the card passes between guides 62, 61 and the lower end is guided by surface 65 to an inclined position. The top end passes between turns of flexible coils 75 two of which are provided one on each side of the card and are rotated in opposite directions to move the card against support 66 and free the passage for entry of the next card. Spring 37 (Fig. 5) may be replaced by two springs (Figs. 8, 9, not shown).
Patent GB-1443970-A (GB)
Title: Charge transfer device matched filter
IPC: G11C19/28
Filed: 1973-10-16
Abstract: 1443970 Active filters TEXAS INSTRUMENTS Inc 16 Oct 1973 [2 Jan 1973] 52896/75 Divided out of 1443969 Heading H3U In a charge transfer device matched filter having multiphase clock electrodes, and in which coefficient weighting is effected by dividing the electrodes of one phase into first and second area portions which are connected to two respective clock lines # 3B , # 3B <SP>1</SP>, the output is detected by separately summing the clock currents required to charge the two portions, and then combining these summed values in differential amplifier. Each summing circuit comprises: a storage capacitor C# the value of which is substantially greater than the total capacitance of the electrode portions of respective clockline; a first semi-conductor switch T 1  or T 5  operable by a pulse applied during a first clock period # 1  to connect the storage capacitor to a reference potential V GG ; a second semi-conductor switch T 3  or T 7  responsive to variations in charge level of the respective capacitor to generate an output 68 or 66; a third semi-conductor switch T 2  or T 6  operated by a pulse during a second clock period # 3A  to connect the capacitor to its respective clock line # 3B  or # 3B <SP>1</SP>; and a fourth semi-conductor switch T 4  or T 8  operated by a pulse during the first clock period # 1  to connect the respective clock line # 3B  or # 3B <SP>1</SP> to earth to discharge the electrode portions so that during the second clock period the storage capacitor discharges by an amount proportional to the charge on the storage capacitors, resulting in a corresponding change in signal output. The differential amplifier has its inputs connected to the two outputs 66, 68.
Patent GB-1404729-A (GB)
Title: Sheet guidance device for use with copying machine
IPC: G03G15/00
Filed: 1973-11-19
Abstract: 1404729 Delivering sheets LUMOPRINT ZINDLER KG 19 Nov 1973 [1 Dec 1972] 53517/73 Heading B8R Sheets fed along a path 44 and between guides 20, 21, Fig. 2, to a photo-conductive cylinder 2 before reaching the cylinder abut against an elongated angle member or two short angle members 24 carried on arms 25 pivoted on the cylinder axis, and move the member (or members) 24 to the position of Fig. 4, against the end 27 of a guide 9, whereafter continuing feed of the sheet by rollers 18, 19 causes the leading end of the sheet to jump clear of the member 24 and thereafter be guided by the guide 9. When the trailing edge of the sheet clears the member 24 the latter returns by gravity to the position of Fig. 2. The member 24 is formed of two webs 29, 30 at right-angles to each other. The member 24 may be retained in the position of Fig. 4, by a magnet energized when the leading edge of the sheet engages a switch near the guide end 27 and de-energized when the trailing edge releases the switch. The switch may be a change-over switch and energize the magnet with opposite polarity to repel the member 24 when released by the sheet. If the member 24 is plastics, the magnet acts on one of the arms 25. A small splined roller may be mounted on the guide end 27 to guide the sheet out of contact with the web 30. Springs acting on the pivoted ends of the arms 25 may assist the return movement thereof, and may be assisted by a return spring in the magnet. The webs 29, 30 may be inclined at an obtuse angle, the web 30 being directed radially outwardly and forwardly in feed direction, and the webs may have bead-like projections spaced along their free. The web 30 may consist of spaced bristles or pieces of resilient wire.
Patent GB-1128860-A (GB)
Title: Process for the preparation of potassium methionate
IPC: C07C309/05
Filed: 1966-12-02
Abstract: 1,128,860. Potassium methionate. FARBWERKE HOECHST A.G. 2 Dec., 1966 [16 Dec., 1965], No. 54006/66. Heading C2C. Potassium methionate is prepared by reacting potassium sulphite with methylene chloride at a pressure below 20 atmospheres gauge and adding to the reaction mixture water in such an amount that part of the potassium sulphite remains in a suspended form. Preferably water is added such that 10-50% of the potassium sulphite is present in a suspended form and the reaction is carried out at a temperature from 90-160‹ C. Mixtures of substances such as potassium bisulphite or potassium pyrosulphite with potassium hydroxide may be used as they form potassium sulphite under the reaction conditions or potassium sulphite may be formed by direct reaction of sulphur dioxide with potassium hydroxide. The process may be carried out either by heating the mixture of methylene chloride and potassium sulphite or by heating the potassium sulphite suspension alone and then adding the methylene chloride. The product is used as an intermediate in the preparation of aluminium methionate and methionic acid.
Patent GB-1169526-A (GB)
Title: A Fuel-Injection Internal-Combustion Engine with Combustion Chamber Arranged in the Piston Crown.
IPC: F02M69/00
Filed: 1966-12-02
Abstract: 1,169,526. Combustion chambers. MASCHINENFABRIK AUGSBURG - NURNBERG A.G. Dec.2, 1966 [Dec.2, 1965], No.54099/66. Heading F1B. Fuel injected on to the wall of a combustion chamber 2 is guided by a channel 5 and recess 6 towards an igniter 7 the end of which enters recess 6 near top dead centre. The channel 5 and recess 6 are open to the chamber 2. The igniter may be a spark or glow plug.
Patent GB-1281301-A (GB)
Title: Fire retardant, polyurethane foam compositions
IPC: C08G18/10
Filed: 1970-11-13
Abstract: 1281301 Fire retardant rigid polyurethane foams CINCINNATI MILACRON Inc 13 Nov 1970 [13 Nov 1969] 54161/70 Headings C3C and C3R Fire retardant rigid polyurethane foams are prepared by reacting a composition comprising (1) an isocyanate terminated adduct obtained by reacting an aromatic polyisocyanate with a difunctional organic compound, (2) at least one polyether polyol having a functionality of at least 4 and which is the reaction product of an alkylene oxide with an alkyl, aryl, aralkyl, cycloalkyl and/or heterocyclic compound, (3) at least one organic compound having a M.W. of at least 500 which does not contain zerewitinoff active H atoms and which contains halogen and/or phosphorus atoms, at least one halogen atom being a bromine atom, or a mixture of halogen and/or phosphorus containing organic compounds, the mixture having an average M.W. of at least 500, which does not contain zerewitinoff active hydrogen atoms and comprising at least one bromine containing compound and (4) a blowing agent. The reaction may also take place in the presence of a urethane polymerization catalyst and/or a surfactant. The difunctional organic compound used to form the component (1) is suitably a polyether diol. Typical compounds (3) which may be used either alone or in specific combinations are tris-(2,3- dibromopropyl)phosphate, a commercial chloroethyl ester of phosphorous acid, tris(1-bromo, 3- chloroisopropyl)phosphate and hexabromocyclododecane. The reaction suitably takes place in a closed mould using an amount of foam-forming components at least twice that which would be required to completely fill the mould cavity if the foam was allowed to freeblow. In a typical example a prepolymer is prepared from polymethylene polyphenyl isocyanate and a polyoxypropylene diol and mixed with a chloroethyl ester of phosphorous acid, the mixture being mixed with a polyol blend comprising tris(2,3- dibromopropyl)phosphate, poly(oxypropylated α-methyl glycoside-glycerol mixture, N,N,N<SP>1</SP>,N<SP>1</SP>-tetramethyl-1,3-butane diamine. The diacetate salt of N,N,N<SP>1</SP>,N<SP>1</SP>-tetramethyl- 1,3-butane diamine, a dimethyl silicone-alkylene oxide copolymer, monofluorotrichloromethane and dichlorodifluoromethane to form a rigid foam.
Patent GB-1288274-A (GB)
IPC: A01J11/00
Filed: 1969-11-10
Abstract: 1288274 Milk processing apparatus M FROLICH 10 Nov 1969 [15 Nov 1968] 54978/69 Heading A2B An apparatus for the production of sour milk preparations comprises a plurality of containers which are formed by subdividing a tank having a jacket for hot or cold water. The containers are connected via valves to a common filling pipe, common emptying pipe and a common pipe for the supply of inoculant. Each container has a stirring means, cleaning means and pipe for cleaning fluid. A suitable apparatus is shown in Fig. 2 wherein a maturing tank 1 is formed as a vertical cylinder having a hot water jacket 2. The tank is subdivided by radial walls 3 into several containers A to D. Each container is connected via a valve 7 and pipe 8 for filling, via a valve 9 in a pipe 10 for emptying, and via a valve 11 and pipe 12 for inoculating the contents of the container. Each of the containers also has a stirring means 13 and cleaning turbine 14, and a pipe 15 for cleaning liquid leads into each of the containers. Milk processed in the tank 1 may be pumped via a cooler 21 to a second tank 23 which itself consists of containers E to H. The cooled milk may thus be stored in these containers.
Patent GB-1292068-A (GB)
Title: Improvements in or relating to thermoplastic films
Inventor: FIELD NATHAN DAVID
IPC: B29C49/00
Filed: 1970-11-20
Abstract: 1292068 Oriented films GAF CORP 20 Nov 1970 [4 Dec 1969] 55403/70 Heading C3P An oriented film of (a) a methyl vinyl ethermaleic anhydride binary copolymer or (b) a terpolymer of methyl vinyl ether, maleic anhydride and another alkyl vinyl ether or (c) a half ester of methyl vinyl ether-maleic anhydride binary copolymer or (d) a half ester of a terpolymer of methyl vinyl ether, maleic anhydride and another alkyl vinyl ether may be prepared by stretching a film of any one of the polymers (a), (b), (c) or (d) by an amount sufficient to increase the tensile strength thereof at least 50%, while heating it to a temperature above its glass transition temperature but below its decomposition temperature. In the examples, the binary copolymer and the terpolymer of hexadecyl vinyl ether are uni-, bi- and multiaxially oriented.
Patent GB-1137909-A (GB)
Title: Light-sensitive material with improved photographic properties
Inventor: RIEBEL ALEXANDER
IPC: C08F22/04
Filed: 1965-12-31
Abstract: 1,137,909. Maleic anhydride copolymers. AGFA-GEVAERT A.G. 31 Dec., 1965 [31 Dec., 1964], No. 55417/65. Heading C3P. [Also in Division G2] A copolymer I is prepared by reacting maleic anhydride and methacrylic acid (75 : 25) in benzene in the presence of benzoyl peroxide as catalyst and has a molecular weight of 1250 measured in dioxane. It is converted to a semi-ester by reaction with butanol and to a semi-imide by reaction with N-methyl urea. A copolymer III is also prepared by reacting maleic anhydride and styrene (75 : 25) in benzene in the presence of benzoyl peroxide as catalyst, has a molecular weight of 1050 measured in dioxane, and is reacted with NaOH. A copolymer is prepared similar to copolymer I having a ratio of maleic anhydride to methacrylic acid of (60 : 40) and is then reacted with sodium hydroxide.
Patent GB-1466874-A (GB)
Title: Gas rurbine engine variable area exhaust nozzle
IPC: F02K1/12
Filed: 1974-11-15
Abstract: 1466874 Jet propulsion nozzles - variable geometry ROLLS ROYCE (1971) Ltd 15 Nov 1974 [30 Nov 1973] 55608/73 Heading F1J A gas turbine jet engine variable geometry propulsion nozzle comprises two sets of pivotallymounted flaps, the flaps 12 of one set being alternately disposed with the flaps 14 of the other set; the flaps 12 are of arcuate section and the flaps 14 are of chute-shape section. The arcuate flaps 12 each have two movable sealing flaps 12a, 12b which contact the chute-shape flaps 14 at each side of the arcuate flap. An actuating mechanism comprising an axially-movable ring member 20 carrying rollers 22 is provided, the rollers engaging cam members 16, 18 carried by the arcuate flaps and the chute flaps respectively. The cams 16 have a surface 16a which rises and a surface 16b which falls while the cams 18 have a surface 18a which corresponds to surface 16a of cam 16, and a surface 18b which continues to rise after a point of inflexion. The nozzle is movable between a maximum area position Fig. 1a for use with re-heat in operation, to a cruise position of smaller area but of circular form Fig. 1b, to a convoluted form Fig. 1c for use when noise reduction procedure is called for, the chute flaps being in their innermost positions, the rollers 22 engaging the portions 18b of the cams. The flaps are held outwardly against the cam rollers by gas-pressure within the nozzle.
Patent GB-1181507-A (GB)
Title: Thermoluminescent Lithium Borate.
Inventor: BRUNSKILL ROBERT THOMPSON
IPC: F21K2/04
Filed: 1966-12-14
Abstract: 1,181,507. Luminescent materials. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 6 Dec., 1967 [14 Dec., 1966; 14 Aug., 1967], Nos. 56019/66 and 37330/67. Heading C4S. In the manufacture of thermoluminescent lithium borate (sensitive to beta and gamma rays for instance), lithium tetraborate is doped with manganese, melted and resolidified in an argon atmosphere. In the preparation, lithium tetraborate powder may be mixed with manganese chloride solution, dried, melted in graphite crucible at 1000‹ C. in argon, cooled to 700‹ C., devitrification subsequently being completed by heating in argon to 650‹ C. then cooling. The product may be cured in air at 400‹ C. Alternatively lithium tetraborate is formed by mixing lithium carbonate and boric acid with manganese chloride in solution and dried at 80‹ C., powdered, heated in turn to 400‹ and 1000‹ C. in argon, then cooled naturally to 670‹ C. Curing to improve sensitivity is not required. Radiation dose measurements are preferably effected in the range 150‹ to 300‹ C. Emission at 6050Š and detection of same by a photo-multiplier is mentioned.