baber/WOPTO huggingface dataset:
Patent GB-1365107-A (GB)
Title: High speed sorting
IPC: B07C5/10
Filed: 1971-11-01
Abstract: 1365107 Sorting apparatus COLONIAL SUGAR REFINING CO Ltd 1 Nov 1971 [5 Nov 1970] 50697/71 Heading G4H [Also in Division G1] A digital computer examines data representing the size of, e.g., rocks derived from a row of horizontal photo-cells 7 (Fig. 1) past which the rocks fall and data representing a property of the rocks, e.g. whether they are crocidolite containing rocks, derived from the outputs of further photo-cells 16 and controls a deflector mechanism to sort the rocks. As described, as the rocks fall in a stream from, for example, a discharging hopper, the outputs of seven photo-cells 7 are fed via logic circuitry 8 (which suppresses output signals of the form 010 from three adjacent photo-cells, representing undersize rock fragments) to a first store 9 comprising two output registers recording the current and immediately preceding photocell outputs. The time of read-in to the store is recorded by a counter 10 pulsed by a clock 11 providing a time base for the sorting operation. Each time the stored data changes a signal is transmitted to logic circuitry 12 which compares the bit patterns with the stored sequence in the memory of the digital computer. By this operation clusters of rock material are stored as individual rock shapes. As they fall the rocks are heated by two high intensity fuel oil burners 14, infra-red emission dependent on their crocidolite content being detected by a bank of infra-red sensitive cells 16 linked to the clock 11 so that the location of the detected radiation values are determined relative to the same time base and stored in memory 18 in the digital computer. A comparator 20 compares the sum of the radiation values per unit area of rock source with a predetermined level and logic circuitry 21, in dependence on the comparator output, determines whether a particular rock should be deflected or not from the falling stream by an air blast directed at its centre of gravity. Suitable delays 24, 25 are included in the circuitry to take into account the trajectories of the rocks and the spacing between the sensing and deflection zones. Modifications: (1) the light detectors may be replaced by ultrasonic transducers, (2) a single detector moved to scan the widths of the rocks may be used, (3) mechanical finger deflectors may replace the air blast deflectors and (4) the apparatus may be extended to multiple selection.
Patent GB-1277934-A (GB)
Title: Improvements in methods of and apparatus for producing tapes from film
Inventor: TOMLINSON IAN
IPC: B26F3/00
Filed: 1969-10-16
Abstract: 1277934 Fibrillating ribbed film TMM (RESEARCH) Ltd 24 Nov 1970 [16 Oct 1969] 50908/69 Headings B4B and B5B Film bearing a plurality of embossed longitudinal lines is selectively split along such lines by feeding it over a guide 3 where it is split and the resulting tapes 1a-1d are led in different paths over guides 4 and 5 whereby the splits continuously regress to the guide 3. The tapes may be recollected as a film, and are suitable for making fibrillated yams.
Patent GB-1401582-A (GB)
Title: Rotary clamp assemblies
IPC: F16B2/12
Filed: 1973-11-02
Abstract: 1401582 Clamps FMC CORP 2 Nov 1973 [6 Nov 1972] 50954/73 Heading E2B [Also in Division F2]  A clamp assembly comprises a housing 52 with an internal bore 56 a bracket 52a for mounting the housing on a support, a clamp arm 82 with a stem 82a and a lateral jaw 82b at one end the stem having a threaded bore and being received in the bore of the housing, a bolt 84 with a head 84a, and a threaded shank 84b, the bolt extending through an opening in the housing and screw threaded into the stem bore and a stop portion 52b on the housing the clamp arm being rotatable relatively to the housing to swing the jaw into and out of engagement with the stop portion whereby rotation of the bolt caused by turning the bolt head results in sliding of the clamp arm and stem within the bore of the housing when the jaw abuts the stop portion, the direction of rotation of the bolt governing whether the clamp arm moves inwardly or outwardly relatively to the bore of the housing. The jaw may be turned by a wrench or a tool inserted in a hole in the head of the bolt or by a bar inserted between bosses 96 on the jaw, a spring 86 abuts an end of the bore and of the bolt whereby the jaw is rotated when the bolt is turned, alternatively the spring is omitted and the jaw is turned by hand. A spring 88 between the end of the stem and a shoulder on the housing maintains the jaw in rotated releasing position. A shank, flange 84e abuts a flange of a plate 70 connected to the end of the housing to retain the bolt in the housing. The housing and stem having a seal element 98 between them. The bracket is bolted to a flange 36 of a pipe which may be one of a series of interconnected pipes joining a rise section on a shore to a manifold of a tanker or the like to carry a fluid. A plurality of clamps may be secured to the flange and engage the flange of the manifold. The bolt heads may be interconnected to operate simultaneously. The clamps may be otherwise used in jigs, fixtures and work holders.
Patent GB-1190120-A (GB)
Title: Improved Carpet Yarn
Inventor: CAISON LLOYD D
IPC: D01F6/60
Filed: 1968-10-29
Abstract: 1,190,120. Polyamide-polyester blend filaments. ALLIED CHEMICAL CORP. 29 Oct., 1968 [30 Oct., 1967], No. 51191/68. Heading B5B. [Also in Division D1] A multifilament yarn is produced by meltextruding a molten dispersion, essentially free of volatiles, of polyethylene terephthalate in polyamide in the proportion by weight 90 : 10 to 60 : 40 of polyamide : polyester, each filament of the yarn being formed from an extrudate hole having a total capillary area of 7- 12.10<SP>-4</SP> sq. inches, the filaments being attenuated while molten by a stack draw down (defined in the Specification) of 70-120 and being drawn after solidification by a ratio of 3À5-5:1 (draw roll speeds). Suitably poly-#-caproamide is used having a primary amino content not more than 55 meq./kg. The polyester is present dispersed throughout the polyamide in the filaments as microfibres of average diameter (D) 0À02-0À3Á, and average length 250D. The filaments may be given, e.g. 8-17 crimps/inch by a drawing/heating process.
Patent GB-1485623-A (GB)
Title: Treatment of droplet dispersions
IPC: C02F1/52
Filed: 1973-11-05
Abstract: 1485623 Coalescing FOSECO INTERNATIONAL Ltd 16 Oct 1974 [5 Nov 1973] 51333/73 Headings B1D and BIT A dispersion of liquid particles in gas or in another liquid, e.g. kerosene in water, including particles below 100 Á dia., is coalesced by passage through a foam-structured ceramic body, which may be a flat disc or hollow sleeve, whose pore size increases progressively in the direction of flow, the coalesced emerging droplets then settling out under gravity. The body may be made by repeatedly dipping a polyurethane foam disc in ceramic suspension, drying and fireing it to produce a disc of lithia-alumina-silica of uniform porosity. The edge of the disc is sealed by plastic, and one face is repeatedly dipped into a suspension of aluminosilicate fibres and colloidal silica and dried. This gives the immersed face a fibrous coating and closes the pores in the disc to a degree which varies from that face to the other. The disc is then mounted in an acrylic plastics frame.
Patent GB-1026158-A (GB)
Title: Improvements in or relating to a process for polymerization of epoxides
IPC: C08G65/12
Filed: 1964-12-17
Abstract: In a process for the polymerization of an oxirane with a catalyst formed by reacting an organoaluminium compound with a chelating agent or with water and a chelating in an amount such that the molar ratio of chelating agent to aluminium compound is 0.01 to 1.5 and the molar ratio of water, when used, to aluminium compound is 0.1 to 1.5, a carbonium ion precursor, i.e. a compound which on reaction with one or more of the components of the reaction mixture will form a carbonium ion, is added as a molecular weight control agent in an amount such that the molar ratio of the precursor to the organoaluminium compound is at least 0.01. Carbonium ion precursors, of which many are specified, include carboxylic and sulphonic acid anhydrides and halides, phosgene, organic compounds which can yield a carbonium ion conjugated with a potential resonating system such as allylic halides (e.g. allyl and crotyl halides) and phenylated methyl halides, nitrates or sulphates (e.g. benzyl and triphenylmethyl compounds), acetals, thioethers, polysulphides, organoboron compounds, sulphuryl halides, phosphorus halides, a -haloalkyl ethers and nitrosyl chloride.  Suitable organoaluminium compounds include the trialkyls, tricycloalkyls, triaryls, alkyl hydrides, halides, alkoxides and aroxides and their complexes, e.g. with alkali metals or tetrahydrofuran.  The preferred chelating agents contain an -OH or -SH group (e.g. . hydroxy, enol of a ketone, sulphoxide or sulphone or OH of a carboxyl (group) and a further group which contains an oxygen, nitrogen or sulphur atom that forms a co-ordinate band with the aluminium. Many examples are given including diketones, ketoacids, ketoesters, ketoaldehydes, hydroxyketones, hydroxyaldehydes, hydroxyesters, dicarboxylic acids and their esters, dialdehydes, alkoxyacids, ketoximes, dialdehyde monoximes, hydroxamic acids, dioximes, nitroalcohols, nitroketones, 2-nitroacetic acid, nitroso-oximes, 2,5-dihydroxy-p-benzoquinone, bis (1,3 - diketones) and bis (1,2 - dioximes). Polymerization may be effected in bulk or in solution.  Many suitable epoxides are specified including alkylene oxides, halo-substituted alkylene oxides, cycloaliphatic mono- and dioxides, epoxy ethers, glycidyl esters, alkyl glycidates, styrene oxides, diene mono- and dioxides, epoxystearates and epoxy amino and ammonium compounds. In examples polymers are prepared from: propylene oxide/allyl glycidyl ether; propylene oxide; epichlorhydrin/allyl glycidyl ether/ethylene oxide; epichlorhydrin/ethylene oxide; and epichlorhydrin.  Propylene oxide/allyl glycidyl ether copolymers are vulcanized using a conventional sulphur formulation.
Patent GB-1212909-A (GB)
Title: Electrical switching apparatus
IPC: H01H47/00
Filed: 1968-11-04
Abstract: 1,212,909. Switching systems. POLITECHNIKA POZNANSKA. 4 Nov., 1968 [4 Nov., 1967], No. 52164/68. Heading H2H. An electrical switching circuit includes -one or more double-winding electromagnetic relays which may be provided only with make contacts. The two windings on each relay may be wound in either the same or opposite directions, and the relay is operated when either of the windings is energized from a D.C. source with two or three terminals, or from an A.C. source. One end of one of the widings is connected directly to the source, one end of the other winding is connected to the source through a controlled make contact, and the other ends of the windings are preferably connected together.
Patent GB-1114463-A (GB)
Title: Improvements in or relating to the anodising of aluminium and its alloys
Inventor: KAPE JAMES MICHAEL
IPC: C25D11/08
Filed: 1965-12-09
Abstract: In a method of anodizing aluminium and its alloys using a sulphuric acid electrolyte, between 1 and 30gr of nitric acid per litre of the electrolyte is added thereto before or during anodizing. The electrolyte may contain 56 to 560gr/1 of sulphuric acid, and the nitric acid added to the electrolyte may have a S.G. of 1.42.  The anodizing may be carried out using an applied voltage of 10 - 60 volts, a current density of 60 -120 Amps/sq. ft and a temperature of 0 - 25 DEG C.
Patent GB-1197509-A (GB)
Title: Pulse Delta Modulation Transmission System and Transmitters and Receivers to be Used in Said System
IPC: H03M3/02
Filed: 1967-11-17
Abstract: 1,197,509. Selective signalling. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 17 Nov., 1967 [22 Nov., 1966], No. 52468/67. Heading G4H. In a delta modulation data transmission system a level signal representing the intensity of the input signal 1, Fig. 5, to be transmitted, is obtained by rectifying 19 and low-pass filtering 20 the input signal, the level signal is delta modulated on to a lead 38 by a conventional loop comprising a subtractor 35, a gate 30, a shaper 33 and an integrator 34, and the input signal is itself delta modulated on to a lead 10 by a loop which includes two variable gain amplifiers 43, 44 controlled by the level signal, the result being that the increments represented by pulses applied to lead 10 vary from small, for small amplitude input signals 1, to large, for large amplitude input signals. This modulation of the incremented size reduces noise, as described in Specification 1,158,560, which is referred to, and the use of a separate transmission path 38 for the level signal has the result that the clock-pulse frequency can be reduced to an unexpectedly low value without increasing the noise to an unreasonable level. As an example, the Specification quotes a clock frequency of 7 kc/s. for lead 10 and 0.7 kc./s. for lead 38 to transmit a speech band of 0.3 to 3.4 kc/s.
Patent GB-1516481-A (GB)
Title: Electrical connector
IPC: H01R4/24
Filed: 1976-12-16
Abstract: 1516481 Two-part couplings AMP Inc 16 Dec 1976 [2 Jan 1976 2 Sept 1976] 52499/76 Heading H2E A connector has a housing 12 of plastics material formed by a body 13 having a cavity, and a cover 14 integrally connected to the body by a hinge A wire is insertable into the cavity through an end wall of body 13 and engages a first contact of a terminal 11 formed from a single piece of sheet metal when the terminal is pressed into the cavity. The first contact part is formed with a slot 29 engageable with the wire cone and comprises two parallel plates 27 each having a slot portion 27 and joined by a slotted member 28. The second contact part may be an eyelet 26. The first contact part may be formed by bending in the reverse sense to that shown in Fig. 1, see Fig. 7 (not shown) and may have spacers between the parallel plates, Figs. 9 and 10 (not shown). The cover may extend from a side wall of the housing body, Fig. 8 (not shown). A projector or stuffer (21), see Figs. 3, 4 and 5 (not shown) supports the wire during engagement with the terminal.
Patent GB-1365537-A (GB)
Title: Frame assemblies for mineral mining
IPC: B65G19/28
Filed: 1971-11-12
Abstract: 1365537 Scraper conveyers GEWERKSCHAFT EISENHUTTE WESTFALIA 12 Nov 1971 [14 Dec 1970] 52649/71 Heading B8A [Also in Division E1] A frame assembly for attachment to an end trough 9 of a scraper chain conveyer has side walls 1, 2 joined by a floor 34 and the end face 8 of the side walls at one end thereof are affixed to connecting members 12 that enable a butt joint connection to be made with said trough 9 whilst the end faces 7 at the other end of the side walls 1, 2 have bores 10 formed therein, which bores 10 enable attachments to be abutted and joined to the faces 7. Apertures provided in the side walls permit of securing drive transmissions for the conveyer and for the haulage of a mining machine that can move along the conveyer on the side walls and allow of access to the inner ends of the bores 10.
Patent GB-1436320-A (GB)
Title: Apparatus for grading articles
IPC: B07B13/07
Filed: 1972-11-15
Abstract: 1436320 Endless conveyers AUTOPACK Ltd 13 Nov 1973 [15 Nov 1972] 52705/72 Heading B8A [Also in Division B2] An apparatus for grading articles of variable size, e.g. carrots, comprises a grading plate 10 and a conveyer 11 having a plurality of laterally projecting spaced fingers 15 for pushing the articles over the upper surface of the grading plate, the latter being provided either with an aperture 29 which increases in width in steps (as shown) or continuously in the direction of movement of the articles over the plate, or with a plurality of apertures which are spaced apart in the said direction and each of which has at least one dimension which is smaller than the corresponding dimension of an adjacent aperture spaced in the said direction, such that in use articles of different sizes pass through said plate at different positions therealong. The conveyer 11 comprises a driven endless belt 12 to which are secured the fingers 15, the belt and fingers defining with the plate 10 spaces into which carrots are fed singly and lengthwise from a conveyer system 18. The latter comprises a feed hopper 19 from which the carrots pass on to vibrating trays 20, 21. The tray 21 feeds the carrots one at a time through a restricted opening 22 on to a conveyer 23 with which are associated a guide member 24 and a pulsating brush 25 for forming the carrots into a single line. A side feeding belt 26 and a further pulsating brush 27 are also associated with the conveyer 23 for feeding the carrots laterally off the latter on to a further conveyer 28 which is driven at a speed greater than that of conveyer 23 to feed one carrot to each space between a corresponding pair of fingers. Carrots passing through the differently sized portions of the plate 10 fall on to conveyers 30 to 33. The conveyers 30 and 31 deliver the carrots to a container. The conveyers 32 and 33 are arranged with their upper and lower runs inclined to the horizontal and with the lowermost edges of their upper runs adjacent to, but spaced from, adjustable fences 34 and 35 respectively so that carrots having a width or diameter below a predetermined value will fall through the space defined between the upper run of the conveyer and its associated fence whilst carrots of greater width or diameter will be carried by the associated conveyer to a receptacle or packaging apparatus.
Patent GB-1455694-A (GB)
Title: Polyurethane and polyurea polymers for use in soft lenses and  method of producing soft lenses
IPC: G02B1/04
Filed: 1973-11-13
Abstract: 1455694 Polyurethanes and polyureas FRIGITRONICS Inc 13 Nov 1973 52705/73 Heading C3R [Also in Division G2] Polyurethane or polyurea resins are prepared by reacting (a) an aliphatic polyfunctional resin precursor containing at least 6 active hydrogen atoms, which precursor has been obtained by reacting an aliphatic polyfunctional compound having at least six active hydrogen atoms present in hydroxyl, aldehyde or carboxyl groups with propylene oxide and/or ethylene oxide and/or dioxolane or with ethylene imine and/or propylene imine so that the ratio of carbon to oxygen or nitrogen atoms in the precursor is less than 3 to 1 and having an equivalent weight not greater than 170 and a M.W. of at least 500 with (b) a diisocyanate of the formula OCN-R<SP>1</SP>-NCO wherein R<SP>1</SP> is a divalent aliphatic, cycloaliphatic, aliphatic-cycloaliphatic or aliphatic-aromatic hydrocarbon group having 4 to 36 carbon atoms or with a bis-(cyclic carbonate) of a corresponding dinitrile, the stoichiometric ratio of isocyanate groups or cyclic carbonate groups to groups containing active hydrogen atoms in (a) being from 0À02 to 15% greater than an equimolar ratio. The resin precursor suitably has eight or more hydroxyl groups and is derived from sucrose or raffinose. Preferred diisocyanates and bis-(cyclic carbonates) are methylehe di-(cyclohexyl isocyanate) and adiponitrile dicarbonate respectively. The polyurethane or polyurea resins are casted, machined and polished by techniques well known in the art to form contact lenses.
Patent GB-1178938-A (GB)
Title: Silica-Coated Lead Chromate Pigments
IPC: C09C1/20
Filed: 1968-11-08
Abstract: 1,178,938. Silica-coated lead chromate pigments. E. I. DU PONT DE NEMOURS & CO. 8 Nov., 1968 [8 Nov., 1967], No. 52964/68. Heading C4A. [Also in Division C1] Lead chromate pigment particles of which no more than 10% are >4À1 Á and at least 50% are <1À4 Á, have a surface coating of 2-40% by weight of amorphous silica. Optionally up to 2% by weight of an alumina coating is superposed on the silica coating. The pigment may be pure monoclinic lead chromate, a solid solution of lead chromate and sulphate in monoclinic form, or a solid solution of lead chromate, sulphate and molybdate ("molybdate orange"). The particle size reduction is attained by homogenizing or milling, and the silica and alumina coatings applied by precipitation from aqueous sodium silicate and a solution of an aluminium salt.
Patent GB-1177993-A (GB)
Title: Method of Producing a Seamless Tubular Wire Filled with a Pulverous Material
IPC: B21C1/22
Filed: 1967-11-21
Abstract: 1,177,993. Making welding wires; drawing. ELEKTRODENFABRIK OERLIKON BUHRLE A.G. 21 Nov., 1967 [23 Nov., 1966], No. 53025/67. Headings B3A and B3P. A tubular wire, particularly a welding wire, filled with a compressed pulverous material is formed by tightly winding a seamless or welded tube on to a core, which is shaken on a shaker table 13 whilst a predetermined quantity of pulverous material is introduced into the open end of the tube, after which the tube is drawn through at least one die to further consolidate the filling powder by reducing the tube external diameter without modifying the wall thickness and is then further drawn to reduce the external diameter and wall thickness of the tube, the compacted pulverous material precluding reduction of the tubes internal diameter. In an embodiment a 50 m. length iron tube is internally shot-blasted, degreased, annealed and drawn through a die on to the drum. After the tube has been filled from a container 19 with the filler material comprising deoxidizing and alloying substances, slag formers and iron, it is drawn through two dies, passed through a chemical cleaning bath and finally electroplated with copper. The tube may be annealed between drawing operations and may be coated with a corrosion inhibiting layer.
Patent GB-1207170-A (GB)
Title: Vibratory grinding method and machine
IPC: B24B1/04
Filed: 1967-11-27
Abstract: 1,207,170. Grinding. NORTON CO. 27 Nov., 1967 [29 Nov., 1966], No.53806/67. Heading B3D. [Also in Division F2] Contact between a grinding wheel 10 and a workpiece is varied by rotating the grinding wheel about an axis fixed relative to a support frame and vibrating the support frame at a frequency which is greater than the rotational frequency of the grinding wheel. As shown, a gear 14 mounted on the wheel axis 7 meshes with an unbalanced gear 12. In another embodiment, the unbalanced gear 12 is driven directly by a belt from a motor mounted on the support frame itself.
Patent GB-1136850-A (GB)
Title: Instant coffee product
IPC: A23F5/36
Filed: 1967-11-30
Abstract: 1,136,850. Instant coffee. PROCTER & GAMBLE CO. 30 Nov., 1967 [30 Nov., 1966], No. 54497/67. Heading A2B. An instant coffee product comprises a mixture of light-coloured and dark-coloured instant coffee particles, the light-coloured particles constituting at least 10% wt. of the total product and having a colour which is defined by Hunter Colour Values of: "L" scale 25-40; "a" scale 5-15; "b" scale 5-20; and the dark coloured particles constituting at least 25% wt. of the total product and having a colour which is defined by Hunter Colour Values of: "L" scale 18-25; "a" scale 5-15; "b" scale 5-15; the light-coloured portion differing from the dark coloured portion on the Hunter "L" scale by at least 5 units, and the mixture being uniformly agglomerated to produce particles of which at least 80% wt. have a size of 12-48 mesh, United States standard screen size. The instant coffee particles may be produced by conventional methods. If spray-drying is employed lighter coloured particles are produced by using low extract densities, high atomizing pressures, and high temperature air for the drying. Lighter colour is also favoured by the use of lighter coloured roasted beans and by the presence of a high concentration of hydrolysis products in the extract, which may be achieved by the use of high extraction temperatures. If freeze-drying is employed, lighter colours are favoured by increased freezing rates.