baber/WOPTO huggingface dataset:
Patent GB-1114550-A (GB)
Title: Improvements in method of making electrical heating elements
IPC: C01F5/02
Filed: 1966-12-02
Abstract: 1,114,550. Resistance heating elements. GENERAL ELECTRIC CO. 2 Dec., 1966 [3 Jan., 1966], No. 54110/66. Heading H5H. The magnesium oxide filling 12 of a metal sheathed heating element 11 is in the form of fused spherical particles (Fig. 3, not shown) and is made by introducing finely divided magnesium oxide into a plasma formed in a stream of gas in a radio-frequency induction torch, allowing the particles to fall through the plasma and then quenching them in a water bath. The gas must contain oxygen to a partial pressure of at least 0À1 atmosphere to prevent reduction of the oxide and is preferably two parts argon to one part oxygen. After recovery from the water bath, the particles of magnesium oxide are compacted around the heating coil by a swaging or rolling operation and then the metal sheath is fitted. This may be of lead for lowtemperature heaters or for high temperatures of " Inconel " (Registered Trade Mark).
Patent GB-1438960-A (GB)
Title: Method of manufacturing a rotor assembly for a dynamo electric machine optical transmission systems
IPC: H02K15/00
Filed: 1972-11-23
Abstract: 1438960 Making dynamo-electric machines; brazing; welding by pressure LUCAS ELECTRICAL CO Ltd 12 Nov 1973 [23 Nov 1972] 54306/72 Headings B3A and B3R A method of making a rotor assembly for a dynamo-electric machine comprises, stamping a plurality of spaced, generally radial grooves 22 in one face of an annular disc to a depth greater than that of the disc so as to form ribs 23 on its other face; moulding an insulating body on the one face so as to fill the grooves with insulating material, Fig 4 (not shown); forming a slot 15 in each conductive segment defined between pairs of adjacent grooves; engaging one end of at least one of a pair of rotor windings 16 in each slot 15; joining the ends to their respective segments by engaging an electrode 26 with each segment and/or at least one of the windings in each slot and passing an electric current between the electrodes; and machining the other face of the disc to remove the ribs 23. The annular disc is of copper and it is formed with lugs 24 when the grooves are stamped. The insulating body is of synthetic resin, which is anchored by the lugs. After the slots 15 have been formed, the disc assembly is placed on a rotor shaft 12, the ends of the windings 16 are located in the slots 15, the edges of which are peened over. A thoriated tungsten electrode 26 is engaged with the peened faces of each of a pair of alternate segments 14. Current passing through the electrodes softens the adjacent areas of the segments, removes insulation from the windings and further deforms the segments to joint them to the windings. Alternatively adjacent pairs of segments may be engaged by the electrodes or one or more sets of three electrodes may be used simultaneously with a suitable three-phase supply. The electrodes may also be used to form brazed or welded connections, possibly after plating the windings. One winding of each pair may have its ends shortened and welded to the ends of the other pair, in which case only the ends of the longer winding are engaged in the slots 15. The electrodes 26 are preferably tapered.
Patent GB-1162419-A (GB)
Title: Artificial Seaweed
Inventor: SCHUUR GERRIT
IPC: E02B3/04
Filed: 1967-12-01
Abstract: 1,162,419. Preventing erosion. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 1 Dec., 1967, No. 54859/67. Heading E1H. Artificial seaweed comprises a plurality of elongated, flexible, buoyant elements secured to anchoring means maintaining the elements near the bottom of a body of water, the elements having been formed from extruded multi-cellular foam strands of a polyolefinic material having a density less than 300 grams per litre, which strands have been subsequently stretched in a ratio of at least 5:1.
Patent GB-549106-A (GB)
Abstract: 549,106. Barbituric acids. GEIGY AKT.- GES., J. R. March 8, 1941, No. 3182. Convention date, March 9, 1940. [Class 2 (iii)] C : C - 1 : 2-Cycloheptenyl-alkyl or alkenylbarbituric acids, their N-alkyl derivatives and salts are prepared by the customary methods. According to the examples, (1). 1 : 2 - cycloheptenyl-methyl-cyanacetic acid methyl ester, obtained by condensing suberone with cyanacetic acid methyl ester in presence of piperidine and methylating with methyl iodide in presence of sodium methylate, is heated with urea in a solution of sodium in ethyl alcohol, and the product, after distilling off the alcohol, boiled with dilute sulphuric acid to give 1 : 2 - cycloheptenyl - methyl - barbituric acid ; instead of methylating with methyl iodide, ethyl iodide may be used to ethylate the starting material, whereby 1 : 2 - cycloheptenyl - ethyl - barbituric acid is obtained as final product; (2) 1 : 2 - cycloheptenyl - allyl - cyanacetic acid methyl ester, obtained by reacting 1 : 2 - cycloheptenyl - cyanacetic acid methyl ester with allyl bromide, is condensed with guanidine, and the product hydrolysed with dilute sulphuric acid to give 1: 2- cylcoheptenyl - allyl - barbituric acid; (3) 1 : 2- cycloheptenyl - methyl - cyanacetic acid methyl ester is heated with dicyandiamide, the product treated with dimethyl sulphate and then hydrolysed with dilute sulphuric acid to give 1:2- cycloheptenyl - ethyl - N - methyl - barbituric acid. Specification 231,150, [Class 2 (iii)], is referred to. The Specification as open to inspection under Sect. 91 also describes the production of the corresponding thiobarbituric acids and contains an additional example of the interaction of cycloheptenyl-ethyl-cyanacetic acid methyl ester with thiourea to form cycloheptenylethyl thiobarbituric acid. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1126598-A (GB)
Title: An improved numerical value indicator
IPC: G06F3/14
Filed: 1965-12-29
Abstract: 1,126,598. Digital value indicators. CANON CAMERA CO. Inc. 29 Dec., 1965 [30 Dec., 1964 (2)], No. 55066/65. Heading G4A. In a digital number indicator in which the position of the decimal point is variable, means are provided for marking off the digits in groups from the decimal point (for example every third digit using commas). In a desk type calculator as shown in Fig. 3, in which digit keys 2 and decimal point key 3 are operated in sequence to insert a number into a pattern-shifting register 6 associated with a display indicator 7, a counter 17 is provided for counting the number of digits following the decimal point and thereby controlling which one of the decimal point indicator lamps 18 and which group of comma indicating lamps 20 is illuminated. The arrangement of the lamps 20 into groups for common operation is illustrated in Fig. 7 (not shown). Instead of ten lamps 20 divided into three groups being provided, Fig. 9 (not shown) illustrates an embodiment using only three lamps plus an arrangement of light pipes leading to the ten comma indicating positions. In a modification (Fig. 10, not shown), the arrangement is such that commas are only indicated to the left of the decimal point wherever this occurs. Fig. 2 (not shown) illustrates a simple embodiment in which selection of the lamp group to be illuminated is effected manually.
Patent GB-1321543-A (GB)
Title: Device for centring a spectacle lens
IPC: B24B13/005
Filed: 1971-11-29
Abstract: 1321543 Grinding lenses WERNICKE & CO KG 29 Nov 1971 [28 Nov 1970] 55293/71 Heading B3D [Also in Division G2] Apparatus for centring a spectacle lens 5 in relation to a mount 4 before grinding the lens periphery comprises means 6, 7 for observation of the mount and lens, a reference plate 9 having a central mark and a peripheral scale, a template carrier 12, and a partially reflecting surface 10 between the observation means and the lens and mount arranged to superimpose an image of the plate 9 on the observed lens and mount, the reference plate being movable towards and away from the surface 10 to eliminate parallax. The template carrier 12 may also be movable towards and away from the surface 10. The reference plate and template carrier may be in contact and movable together. Reference plate 9 may be movable in direction K, and in a direction perpendicular to this in the plane of the plate, and rotatable about its centre. Light 102 and ground glass screen 101 may also be provided.
Patent GB-1247766-A (GB)
Title: A rectifier coupling with a low threshold value
IPC: G01R19/00
Filed: 1969-11-12
Abstract: 1,247,766. Transistor detector circuits. INTERNATIONAL STANDARD ELECTRIC CORP. 12 Nov., 1969 [15 Nov., 1968], No. 55440/69. Heading H3T. [Also in Division G1] A circuit for producing a unidirectional output proportioned to the amplitude of an alternating voltage includes an operational amplifier 71 with a resistive feedback loop M1, a rectifying arrangement connected to the output of the amplifier and a second feedback loop M2. The rectifying arrangement incorporates the base collector diode of a transistor T2 and the second feedback loop is connected between the emitter of this transistor and the amplifier input. The second feedback loop allows the bias of the transistor T2 to vary such that the rectified voltage is proportional to the input voltage and steady. This circuit has a low threshold value and high stability. The negative feedback M1 stabilizes the D.C. operating point to such a level as to switch off the transistor T2. During positive half cycles of an input, transistor T1 bottoms and T2 is maintained cut off. During negative half cycles T2 conducts and the negative feedback circuit M2 functions to maintain the output voltage at T2 collector linear in relation to the input at I, the transistor current in T2 being essentially equal to the input current of T1. The rectified alternating voltage at the output may be filtered by a capacitor. If this is in parallel with the output load resistor RO, direct voltage proportional to the rectified mean value of the supplied voltage is obtained, while if connected between collector and emitter of T2, a direct voltage proportional to the peak voltage supplied is obtained.
Patent GB-1417682-A (GB)
Title: Hectograph products and process
IPC: C09D11/00
Filed: 1973-11-29
Abstract: 1417682 Hectograph printing ink COLUMBIA RIBBON & CARBON MFG CO Inc 29 Nov 1973 [6 Dec 1972] 55497/73 Heading C4A A thixotropic hectograph printing ink which comprises from 30% to 80% by weight of a voltatile organic liquid vehicle having a boiling point between about 200‹ F. and 460‹ F; and having a solids content of from 70% to 20% by weight, the solids content comprising a major amount by weight of particulate, spirit-soluble hectograph colouring matter and minor amounts by weight of dispersed hard waxy binder material particles having a melting temperature of from 140‹ to 300‹ F., film-forming binder material, and non-drying oleaginous material which is at least partially incompatible with the hard waxy material, the ink being capable of being printed and dried at ambient temperatures and fused at elevated temperatures to provide a clean, rub-resistant, stable duplicating composition may be prepared by (a) preparing a dispersion of the hard waxy binder material in a volatile organic liquid which contains the non-drying oleaginous material, (b) heating the dispersion to form a clear liquid, (c) mixing solid particulate hectograph colouring matter with the clear liquid to cool the liquid and cause the waxy material to come out of solution in the form of tiny particles, (d) preparing a solution of the film-forming binder material in a volatile organic liquid which is miscible with the organic liquid of the mixture, and (e) milling the mixture and the solution together to form the ink. In the examples the inks comprise carnauba wax particles, lanolin, carbon black, crystal violet dye particles, ethyl hydroxyethyl cellulose, naphtha, xylene, mineral oil, ethyl cellulose and mineral spirits.
Patent GB-1217673-A (GB)
Title: Component failure detection system
Inventor: RANDOLPH GERALD C
IPC: B60Q11/00
Filed: 1966-12-12
Abstract: 1,217,673. Protective arrangements. ESSEX INTERNATIONAL Inc. 23 Nov., 1967 [12 Dec., 1966], No. 55652/66. Heading H2K. [Also in Division G4] A circuit for monitoring the current in a load (e.g. lamps LT 1 , LT 2 ) comprises a resistor Ri in series with the load, the resistor being shunted by the series arrangement of a semi-conductor rectifier CR 1  and an indicator lamp L 1  which provides an on-off indication of partial opencircuit load. In the circuit shown, lamps LT 1 , LT 2  are the tail lamps of a road vehicle, the threshold voltage of rectifier CR 1  being such that indicator lamp L 1  will be lit if the filaments of both tail lamps are intact but substantially extinguished by the failure of one tail lamp filament. A second rectifier CR 2  prevents damage to the indicator lamp L 1  by the initial surge when the tail lamps are turned on.
Patent GB-1218848-A (GB)
Title: Process for the treatment of tobacco
IPC: A24B15/12
Filed: 1968-11-26
Abstract: 1,218,848. Reconstituted tobacco. PHILIP MORRIS Inc. 26 Nov., 1968 [29 Nov., 1967], No. 56046/68. Heading A2C. [Also in Division D2] A process for treating tobacco comprises: (1) contacting tobacco plant parts with an aqueous solution of an alkali metal phosphate or ammonium phosphate or a mixture thereof for 5 minutes to 24 hours at 50-100‹C., in an amount to provide 1-50% phosphate by weight of the amount of tobacco, to form a pulp comprising the parenchymous cells or tissue, the fibro-vascular bundles, and the pectins released from the tobacco; (2) straining the resultant pulp to remove the fibro-vascular bundles, the strainer used having a plurality of openings one dimension of each of which is no larger than # inch and no smaller than 1/50 inch and no dimension of which is less than 1/50 inch; and (3) forming the resulting material into a sheet. The preferred phosphate is diammonium phosphate, and during the treatment the pH of the pulp is preferably maintained between 8 and 9 by the addition of aqueous ammonia. The strainer preferably has circular openings but may alternatively have long slits. Any tobacco stems or stalks used should preferably be of such a size, e.g. not less than “ inch in length, that at least 95% will be retained by a 20 mesh screen. The resulting product can be employed as a cigar wrapper or, by applying tobacco solubles to the finished sheet, be employed as a base for reconstituted tobacco. The parenchymous cell material, with accompanying pectins, could also be used by the paper industry as a beater additive to increase the wet strength of paper replacing guar gum and similar materials.
Patent GB-1369791-A (GB)
Title: Change-speed friction drive means
IPC: F16H15/46
Filed: 1970-11-28
Abstract: 1369791 Friction gearing W J TAYLOR 27 Jan 1972 [28 Nov 19701 56641/70 Heading F2Q [Also in Division G5] In a friction drive arrangement comprising a driving wheel 82 and a driven wheel 80, the driving wheel 82 is secured to the rotor of an electric motor 84 which is mounted on an arm structure 86 pivoted at 88 so that the wheel 82 is movable bodily into and out of engagement with the wheel 80. A solenoid 96 controls engagement of the friction wheels 80, 82. The directions of rotation are such that driving wheel 82 tends to "climb" the driven wheel 80, thereby increasing the frictional grip. A second motor 74 provides a second driving means at a different speed. In a modification, a belt 66 engages a driven pulley 64, a driving pulley 110 adapted to be driven by a motor 74, and a capstan pulley 112 adapted to be driven from a motor 84 through reduction worm gearing 114 and friction wheels 82, 80. A solenoid 96 controls engagement of the friction wheels 82, 80. The mechanism is used to drive a tremolo paddle in an electronic organ.
Patent GB-1433829-A (GB)
Title: Method of casting and apparatus therefor
IPC: B22D13/06
Filed: 1973-12-07
Abstract: 1433829 Casting-machines O E EBERLE 7 Dec 1973 [7 Dec 1972] 56764/73 Heading B3F Apparatus for centrifugally casting precious metal objects comprises a crucible 10 mounted on a rotatable table 31, a flask 18 attachable to the crucible and containing investment material 20 defining mould cavities 38, a cover 24 attached to the end of the flask, and a hose 43 for evacuating the space inside the cover 24. The flask and crucible are supported on the table 31 between columns 32 by rods 35 so that they can be swung from a vertical position to the horizontal position shown in phantom in Fig. 2. Prior to casting the crucible is orientated so that its outlet 14 faces upwardly and the metal to be cast is melted therein. A flask 18 preheated to between 400‹ and 700‹ F. is then clamped in position on top of the crucible 10 and the air contained therein evacuated through conduits 43 and 48. The valve 57 is then shut to discontinue the application of vacuum to the conduit 48, the table 31 is set in motion and the crucible 10 and flask 18 tilted into their horizontal position so that the molten metal in the crucible 10 flows into the mould cavities 38 under the action of the centrifugal force. The flexible hose 43 is connected to a fixed pipe 54 via a flexible coupling sleeve 52 which permits rotation of the hose 43 relative to the pipe 54 so that a vacuum can be applied to the space inside the cover 24 during rotation of the table 31.
Patent GB-1414148-A (GB)
Title: Method of measuring the wall thickness of a tube of non- conducting material and an apparatus for carrying out the method
IPC: B29C48/92
Filed: 1972-12-08
Abstract: 1414148 Electro-physical measurement: thickness B ZUMBACH [trading as ZUMBACH ELECTRONIC-AUTOMATIC] 8 Dec 1972 [13 Dec 1971] 56801/72 Heading G1N In a system for measuring the wall thickness of plastics tube 1 as it leaves the extruder nozzle, a spring plate 6 bears on the inner surface of the tube and is rotated by an e.g. air-motor 4 mounted on an extension of the mandrel. Inductors 8 are located at a predetermined distance from the external surface e.g. by shoes resting on the tube, and the minimum signal due to relative motion between plate 6 and each inductor 8 gives the thickness at that point. This avoids the necessity of accurately positioning the plate in the tube. Other arrangements for mounting and imparting reciprocating or rotary motion to the conducting member within the tube are described, e.g.:- Fig. 3 (not shown) the conductor is mounted eccentrically in an insulating roller Fig. 5 a metal roller 15 (covered by an insulating sleeve) is mounted on a holder 17 pivoted on the nozzle mandrel 2. A magnet 18 on the holder cooperates with an external magnet 19, mounted on a rotatable ring 20, to hold the roller against the inner surface and to impart rotary motion. Alternatively the sleeve may also house the magnet which is held by magnetic attraction without other support, Fig. 4 (not shown).  Figs. 6 and 7 (not shown), a plate (26) is carried by pins (25) mounted near the circumference of plastics wheels (23), so that as the wheels roll along the inner surface of the tube, the plate engages the surface once per revolution. Fig. 9 (not shown) rollers (38) inclined to the axis of the tube are used to impart rotary motion to the "conductor carrier" as the tube moves axially. Fig. 10 (not shown) the conducting member may be a metallized tyre in rolling engagement with the tube. A ROTARY INDUCTOR system is shown in Figs. 11 and 12 (not shown) wherein metal blocks are spring-urged against the inner wall of the tube and the inductor is mounted in a ring to rotate around the tube at a fixed distance from the outer wall. Cam operated switches slow the drive motor as the inductor traverses the measuring positions.
Patent GB-1201407-A (GB)
Title: Improvements in or relating to copolymer blends
Inventor: COATES JOHN STUART
IPC: C08L23/12
Filed: 1968-11-29
Abstract: 1,201,407. Polymer compositions. E. I. DU PONT DE NEMOURS & CO. 29 Nov., 1968 [30 Nov., 1967], No. 56852/68. Heading C3P. [Also in Division B3] Compositions comprise (A) 1 to 50 weight per cent of a polymer of an olefinically unsaturated hydrocarbon having a melt index below 1000 and (B) 50 to 99 weight per cent of an at least 60% hydrolysed ethylene/vinyl ester copolymer which contained before hydrolysis 5 to 25 mole per cent of vinyl ester units and 75 to 95 mole per cent of ethylene units. Specified polymers (A) are polyethylene, polypropylene, polybutenes, polyvinyl aromatic hydrocarbons, polyterpenes and ethylene/propylene, ethylene/ butene, ethylene/2-methylbutene- 1, ethylene/ hexene, ethylene/n-octene copolymers, olefin copolymer rubbers containing butadiene and 1,4-hexadiene units, acrylonitrile/styrene and butadiene/styrene copolymers. (B) may be derived from vinyl acetate, formate, propion - ate, butyrate, stearate, benzoate or cyclohexanoate. The compositions may comprise waxes, tackifiers; plasticizers and stabilizers and may be used for bonding metals, polymer films, leather and cellulosic materials. Examples describe compositions of hydrolysed ethylene/ vinyl acetate copolymers and linear and branched polyethylene, isotactic and amorphous polypropylene, ethylene/propylene, ethylene/ butene, ethylene/n-octene and ethylene/propylene/1,4-hexadiene copolymers, polystyrene and alicyclic hydrocarbon resin.
Patent GB-1426239-A (GB)
Title: Pressurised dispenser
IPC: B65D83/16
Filed: 1973-12-07
Abstract: 1426239 Pressurized dispensing containers AEROSOL INVENTIONS & DEVELOPMENT SA 7 Dec 1973 [28 Dec 1972] 56853/73 Heading F1R A dispensing cap and button assembly comprises a body having inner and outer skirts 9, 8 connected at 10, the inner skirt having means for engaging the rim 7 of a container and having a central tube 13 in which an outer sleeve 14 'of a button 14 is guided. The button has an inner tube 14" engagable with the valve-member and at the outer end has an enlarged head 15 guided in the outer sleeve 8. The member 10 may be flat as shown, or conical Fig. 2 (not shown). The Specification also describes means comprising protrusions (21) Fig. 4 (not shown) on the outer edge of the mounting cup for retaining the gasket 6 in situ during assembly of the cup to the container.
Patent GB-1334093-A (GB)
Title: Method of pneumatically mising and homogenising powdered or fine grained material
IPC: B01F33/40
Filed: 1971-12-10
Abstract: 1334093 Pneumatically mixing powders POLYSIUS AG 10 Dec 1971 [22 Feb 1971] 57407/71 Heading B1C A method of mixing and homogenising powdered or fine-grained material in a container whose base comprises a central zone 4 surrounded by an annular zone divided into at least six, and preferably eight, sectors 5a.. 5h is characterised in that the central zone is continuously strongly aerated while only a pair of diametrically opposed sectors are aerated at any time. The aeration of the annular zone is weaker than that of the central zone, and the pairs of sectors are areated in a circumferentially advancing sequence. Each sector may be supplied with air at a rate which decreases radially outwardly. A continuously aerated annular zone 6 surrounding the sectored zone may be provided. Material is discharged via outlet 3.