baber/WOPTO huggingface dataset:
Patent GB-1271261-A (GB)
Title: Method and circuitry for the solution of classification problems
Inventor: KLEMT ARTHUR
IPC: G06K9/50
Filed: 1969-05-16
Abstract: 1,271,261. Pattern recognition. A. KLENT. 16 May, 1969 [28 Nov., 1968], No. 25143/69. Heading G4R. Representatives having n features available as electrical quantities are classified by converting each to push-pull A.C. or true and inverse D.C. form and applying them in this form to a plurality of resistor networks for each classification class to form combined features, the resistor values being chosen according to a preceding learning process in such a way that the combined features are independent from each other and that the standard deviations of their values become minimal for the representatives of the respective classes used in the learning process, and it is determined whether the combined features lie within limits found in the learning process. As described, the features are the analogue voltages from respective photocells in a matrix of photo-cells sensing a character. In the A.C. case, the light used is chopped to give A.C. from the photo-cells which is converted to push-pull form by transformers which also provide the sum of the photo-cell outputs in push-pull form. Each resistor network has a weighted resistor for each feature, connected to its push or pull lead, and a weighted resistor connected to the push or pull sum lead. The resistors in a given network are connected in parallel to a summation resistor respective to the network at a junction which provides the combined feature voltage respective to the network. The sum lead is used to cause the limits between which the combined feature must lie to bracket zero. Alternatively, a constant voltage could be used for this. An OR gate with threshold logic is provided for each possible character and is fed with the combined feature voltage from each resistor network respective to that character. If all the combined feature voltages fall within the limits for that character, the OR gate produces an output to identify the character. If more than one OR gate produces an output gates in all the outputs are disabled. The limits are also made dependent on the voltage on the pull sum lead which is fed to the OR gates via a transformer, to compensate for variations in character stroke width and deviations in the supply voltage. In addition, classification is only performed if the combined feature voltages are less than the voltage from this transformer. The D.C. case described is generally similar, mutatis mutandis. The calculation of the resistor and limit values is described in detail.
Patent GB-493167-A (GB)
Title: Improvements in and relating to insulating compounds and methods of making the same
IPC: C08L7/00
Filed: 1937-09-16
Abstract: A rubber composition for insulating purposes comprises de-proteinized rubber, an antioxidant, zinc oxide and fillers, and an accelerator which yields nascent sulphur at vulcanizing temperatures, such as tetramethyl thiuram disulphide or polysulphide, but no free sulphur. The rubber is de-proteinized by digesting it at a temperature of from 175 to 205 DEG  C. in an autoclave partially filled with water or a dilute solution of sodium chloride or an alkali, all air being removed in the initial stages of the heating.  It is then washed in an enclosed steam heated washing machine, the wash water being kept boiling, steam, or a non-oxidizing gas, such as nitrogen, hydrogen, carbon dioxide or producer gas, being bubbled therethrough.  An alcohol wash may then be applied.  After draining the water off, an antioxidant is incorporated in the rubber, and it is dried in the presence of a non-oxidizing gas.  Specification 493,395 is referred to.
Patent GB-385029-A (GB)
Title: Improvements relating to electric cables
IPC: H01B3/28
Filed: 1931-09-08
Abstract: 385,029. Cables. ST. HELENS CABLE & RUBBER CO., Ltd. and EVANS, H., St. Helens Works, Slough, Buckinghamshire. Sept. 8, 1931, No. 25218. [Class 36.] A protective covering for an insulated cable is formed by depositing thereon a layer of rubber latex which is vulcanized before or after depositing. The latex layer may be deposited upon a fibrous covering of the cable or upon the lead sheath or armouring of the cable and is applied by passing the cable one or more times through a bath of vulcanized or unvulcanized rubber latex.
Patent GB-162003-A (GB)
Title: Improvements in the manufacture of brushes
IPC: A46D3/00
Filed: 1919-10-15
Abstract: 162,003. Neuhafer, M. Oct. 15, 1919. Moulding brushes.-A mould for use in the manufacture of brushes comprises an apertured block surmounted by two or more members adapted to be used in combination according to the shape, size or construction of brush to be formed. One form of mould comprises an apertured block a, a ring f fitted thereon and provided with one or more funnels r to admit cement, and with a recessed portion h for the reception of a handle, if required, and a. second ring i fitting inside a recessed portion of the ring f. Specification 11242/12, [Class 19, Brushing &c.], is referred to.
Patent GB-263463-A (GB)
Title: Yarn dryer
IPC: F26B15/12
Filed: 1926-10-12
Abstract: 263,463. Haas, H. Oct. 12, 1926. Air, controlling direction of flow of. -The yarn in hank form is traversed through a drying tunnel in the initial compartment or compartments of which it is subjected to upwardly circulating air currents which warm the lower loops of the hanks without evaporating the moisture therein and in the subsequent. compartments to downwardly circulating currents, of heated air which dry the hanks. The tunnel is provided with laterally disposed air-heating chambers H.
Patent GB-894356-A (GB)
Title: Improvements relating to coupling devices for connecting an end of an electric cableto a casing
Inventor: COPPACK JOHN LIONEL
IPC: H02G3/06
Filed: 1958-08-07
Abstract: 894,356. Pipe joints. BRITISH INSULATED CALLENDER'S CABLES Ltd. Aug. 6, 1959 [Aug. 7,1958], No. 25391/58. Class 99(1). [Also in Group XXXVI] A conduit is jointed to a casing without rotating the conduit or the casing by means of a bush, attached to the casing and forming a spigot and socket joint with a sleeve, the joint having interengaging means allowing relative rotation but limiting relative axial movement between the bush and the sleeve. As shown, Fig. 1, a bush 5 screwed into a casing 2 and locked by a nut 9 forms a spigot and socket joint with a sleeve 15. Balls 18 inserted, through a passage 19, in co-operating annular grooves 16, 17 limit axial movement but allow rotation between the bush 5 and sleeve 15. This relative rotation is prevented when lock nut 12 is screwed tight. An annular spring, Fig. 2 (not shown), may replace balls 18. The sleeve 15 may be screwed directly on to a conduit. In another embodiment, Fig. 3, the sleeve comprises two parts 39, 41 screwed together with shoulders 40, 45 engaging the spigot to limit axial movement.
Patent GB-839987-A (GB)
Title: Improvements in magnetic storage devices
IPC: H03K17/972
Filed: 1956-08-21
Abstract: 839,987. Digital electric calculating-apparatus. INTERNATIONAL BUSINESS MACHINES CORPORATION. Aug. 21, 1956 [Aug. 26, 1955], No. 25485/56. Class 106 (1). A keyboard for entering digital data into a computer or the like comprises a plurality of keys 12, Figs. 2, 3, each of which closes, when depressed, an associated incomplete core 28 by a member 24, thus completing a magnetic circuit around an intersection of an interrogation line 30 and an output line 36, so that when the interrogation lines are successively pulsed output signals, representative of the registered data, are produced by amplifiers 40. Specification 827,296 is referred to.
Patent GB-773475-A (GB)
Title: Improvements in or relating to electro-magnetic variable-speed drives
IPC: H02P7/06
Filed: 1955-09-06
Abstract: 773,475. Electromagnetic clutches. SCHMID, W. K. Sept. 6, 1955 [Nov. 20, 1954], No. 25503/55. Addition to 748,255. Class 35. In an electromagnetic coupling having an externally-driven outer member 1 with D.C. poles 2, 3, 4, 5, and an inner member 6 whose speed is controlled by the intermittent shortcircuiting of its winding through a resistance 14 by a contact-drum 12, the field windings are fed from the inner member during the intervals between short-circuits by the drum. The inner member may carry a single-phase A.C. winding, as shown, the field current being rectified by a rectifier 15, or alternatively the inner member may be commutated, or it may be polyphase. The rheostat 14 may be coupled to the controlling slider 11.
Patent GB-1416577-A (GB)
Title: Skylight structure
IPC: E04D3/08
Filed: 1973-05-29
Abstract: 1416577 Sky lights; frame joints ROPER CORP 29 May 1973 [22 June 1972] 25562/73 Headings E1J and E1R The purlins 16 and rafters 17 of a sky-light are tubular, each having on its upper surface a pair of glazing supports 86 and a respective condensation drainage channel 21, 27, the ends of each purlin drainage channel 21 discharging into a rafter drainage channel 27. Capping members 43 are secured in place by self-tapping screws 39 screwed between upstanding walls 95, 96 on a purlin or rafter. The purlin and rafters are secured together by means of a longitudinal extension 54 on each purlin received in cut-outs 111 in a rafter's upper edge and secured thereto by first pegs 63 engaged in holes in said extension and projecting into the channels 27 and second pegs 65 engaged in holes 121 in the rafter's glazing supports 86 and projecting between said walls 95, 96 of the purlin.
Patent GB-1376470-A (GB)
Title: Slider for concealed zip fasteners
IPC: A44B19/30
Filed: 1972-06-01
Abstract: 1376470 Sliding clasp fasteners YOSHIDA KOGYO KK 1 June 1972 [2 June 1971] 25688/72 Heading E2S A slide assembly of the automatically locking type adapted for concealed zip fasteners, comprises a slider body 11 having an integral diamond member 13 for guiding rows of fastener elements (not shown) a locking member 16 pivotally connected at 20 to diamond member 13 and provided with a locking pin 21 engageable with the fastening elements, a spring 23 resiliently connecting between the locking member 16 and diamond member 13, a pull tab 24 and associated link 25, a reduced space 27a being provided between locking member 16 and diamond member 13 for the restricted passage of link 25 against the force of spring 22 into and out of a position in which the pull tab lies behind the slider body and concealed from external view. Projections 14a on diamond member 13 or a ridge 30 on locking member 16 of a modification shown in Fig. 4 form protuberances which restrict the passage of link 25. When the link 25 is located at the restricting protuberance it lifts the locking pin 21 out of engagement with the fastener elements.
Patent GB-443380-A (GB)
Title: Improvements in or relating to shirts
IPC: A41B3/00
Filed: 1934-09-08
Abstract: 443,380. Shirts. HAMILTON, J., HAMILTON, J. C., and HAMILTON, J. A., John Street, Londonderry, Northern Ireland, and EATON, S. H., 2, Rolla Street, Salford, Lancashire. Sept. 8, 1934, No. 25842. [Class 141] A shirt a is provided with a neckband b for a detachable collar, and with an attached collar d which is adapted either to lie inside the shirt when a detachable collar is worn, or to be folded over the neckband b so as to lie outside the shirt, the neckband b being of double thickness, Fig. 3, and the neckband e of the non- detachable collar d and the material of the back and shoulders of the shirt being placed between such thicknesses, and the whole secured together by the same stitching b<1>. The collar d may be provided with loops f through which the tie may be passed.
Patent GB-142745-A (GB)
Title: Improvements relating to toy building blocks
IPC: A63H33/10
Filed: 1919-10-24
Abstract: 142,745. Purdy, H. Oct. 24, 1919. Building-blocks. - In order to prevent horizontal displacement of the corner blocks used in erect. ing toy buildings, each block is formed with a hole, a<1> and a groove a<2>. A vertical rod is passed through the hole and the groove engages a tongue on the tongued-and-grooved wall blocks.
Patent GB-1512084-A (GB)
Title: Structural materials
IPC: B32B13/12
Filed: 1975-06-19
Abstract: 1512084 Laminates FORMICA INTERNATIONAL Ltd 17 June 1976 [19 June 1975] 26121/75 Heading B5N A unitary structural material comprises a preformed thermoset plastics laminate sheet secured to a water-set cementitous composition through an intermediate porous fibrous sheet of high wet strength, the intermediate porous fibrous sheet being bonded to the preformed thermoset plastics laminate sheet by an adhesive and being keyed to the cementitious material as a result of having been embedded in the cementitious compositions before watersetting thereof. The thermoset plastics laminate, which may have a decorative appearance, is produced by assembling a stack of a plurality of thermosettable resin impregnated organic fibrous sheets and then applying heat and pressure to effect consolidation. A preferred laminate comprises an alpha cellulose paper overlay and a printed paper decorative layer each impregnated with a thermoset melamine formaldehyde resin and a core layer comprising a plurality of Kraft-paper sheets impregnated with a thermoset phenol-formaldehyde resin. The fibrous sheet which may be made of synthetic polymer, cellulosic, glass or asbestos fibres, has a tensile strength when completely wetted by water which is 20% or more of its dry tensile strngth, and may be woven or non- woven. The adhesive which may be applied either to the laminate and/or to the fibrous sheet may be a phenol-formaldhyde, ureaformaldehyde, epoxy or polyvinyl alcohol resin. The cementitious. composition may comprise plaster, inorganic particle/sodium silicate mixtures, lime or cement mortar or concrete, and may contain reinforcing materials, e.g. chopped glass fibre strands, reticulate or rod reinforcements. The cementitious composition may be foamed and/or include light-weight aggregate, e.g. vermiculite, expanded perlite, powdered fly-ash or expanded synthetic polymer beads, the surface of the laminate bonded to the fibrous sheet may be roughened by mechanical abrasion or sand-blasting prior to bonding. A discontinous primer layer, e.g. of a polymeric latex or epoxy resin, may be provided between the fibrous sheet and cementitious compositions. The fluid cementitious composition may be applied to the surface of the fibrous sheet adhesively bonded to the laminate positioned decorative surface downwards on or in a mould or jig, or the fluid cementitious layer may be poured into a mould and the laminate having bonded thereto the fibrous sheet, positioned thereon. Alternatively two composite boards each comprising a laminate with a fibrous sheet adhesively bonded thereto may be positioned in spaced apart relationship with their fibrous sheet surfaces facing towards each other and fluid cementitious composition introduced between them.
Patent GB-1348161-A (GB)
Title: Method and apparatus for puryfying waste gas
IPC: B01D53/68
Filed: 1971-04-19
Abstract: 1348161 Absorbing gases SHOWA DENKO KK 19 April 1971 [7 April 1970] 26220/71 Heading B1L [Also in Division C1] A gas purified by (A) spraying on to a packed bed a solution of a substance that will react with the impurities to be removed, so depositing the substance in solid form on the packed bed, (B) passing the gas through the bed is that the impurities react with the deposited material, and (C) when the activity of the substance falls off, removing it from the packed bed and at the same time or afterwards repeating step (A). In particular, gaseous effluents containing fluorides, chlorine, SO 3  or HCN are made fit for discharge into the atmosphere by passage through a bed of latticed, ring-shaped, perforated or reticulated plates of metal or plastics or matted fibrous substance on which an alkali has ben deposited from aqueous solution. The spent alkali can be washed off with plain water and fresh alkali applied, or the fresh solution can itself be used to wash off the spent alkali. For continuous operation, two or more absorbent beds may be provided in parallel, one or some being regenerated while the other is or others are on stream.
Patent GB-518330-A (GB)
Title: Improvements in rotary grizzly screens
IPC: B07B1/15
Filed: 1938-09-08
Abstract: 518,330. Sifting-apparatus. SIMON-CARVES, Ltd., and DRAYCOTT, F. W. Sept. 8, 1938, No. 26231. [Class 117] In screens of the type comprising a series of transverse rotating shafts a, b, c, d, e carrying staggered discs f, g, h, i, j, the distance between the shafts is simultaneously adjustable so as to vary the screening openings and ensure that all such openings are of uniform size. One of the shafts, c, is mounted in fixed bearings, and the other shafts are mounted in sliding bearings which are adjusted by two intergeared longitudinal shafts o, p, having worms engaging nuts on the bearings. The pitches of the worms and nuts increase by unit amounts from the stationary shaft outwards. The shafts rotate in the same direction being intergeared by jockey sprockets carried on links which fulcrum on the shafts so that gear transmission is maintained during adjustment.
Patent GB-895777-A (GB)
Title: Electrostatic image development apparatus
IPC: G03G15/08
Filed: 1958-08-15
Abstract: 895,777. Electrophotography. KOLB, O. K. (Haloid Co.) Aug. 15, 1958, No. 26259/58. Class 98(2). In a powder cloud generator for developing xerographic elements, the excessively heavy or agglomerated particles of the cloud are separated by nearly reversing the direction of part of the gas stream carrying the particles as they are about to enter the development chamber, the heavy particles and the remainder of the gas stream continuing in the original direction. As shown, the entrance to the development chamber 13 is through narrow inclined slot 28 and the stream of particles proceeding from chamber 10 is divided at the slot in proportions depending on the degree of constriction of the entrance to chamber 18 by member 22 (which is slidable relatively to thin plate 14 by means of screws 23) and member 12 located on changeable shims 21. The stream from slot 28 passes between stationary or moving photo-conductive insulating surface 26 of the xerographic plate, band or cylinder (Fig. 3, not shown) and thin metal plate 15 which is mounted on an insulating member 45. The heavy particles are removed from chamber 18 by suction through pipes 19 and the particles which do not adhere to surface 26 are removed by suction from chamber 20 through pipes 42. All these particles after passing through suction pump or blower 38 are trapped in filter 40. Compressed air supply tank on pump 31 maintains an elevated pressure in cloud generating chamber 33 so that powder on ribbon 41 is blown through nozzle 36 into copper tube 37. Rolls 35 are spring or motor driven at a constant speed to wind the powder impregnated sapped cotton flannel ribbon past the nozzle 36. Tube 37 is earthed and is a capillary tube or has a capillary section in which the powder is turboelectrically charged by turbulence. The whole system may be cleaned out by blowing air through valves 52. A small electrostatic charge may be applied to plate 15 on conductive backing 27 to neutralise any residual charge on the substantially discharged parts of surface 26 so as to prevent deposition of the powder thereon or, alternatively, plate 15 may be charged to promote deposition on surface 26 to intensify an over-imposed image. When the powder cloud has a similar charge to that of the electrostatic image, development may be effected by applying a large similar charge to plate 15 so that the powder is repelled by the plate on to the surface 26.
Patent GB-481970-A (GB)
Title: Improvements in spring rings for preventing lateral displacement of machine parts
IPC: F16F1/02
Filed: 1936-09-28
Abstract: 481,970. Shafts. REID, L., and AUTOMOTIVE ENGINEERING CO., Ltd. Sept. 28, 1936, No. 26294. [Class 80 (ii)] [Also in Group XXV] A split spring ring for preventing lateral movement of machine parts, e.g. a pinion on a shaft, is provided with means adjacent to its ends adapted to limit the extent to which the ring may be expanded. One end of the ring may carry a stop 4, Fig. 1, co-operating with a projection 5 on the other end of the ring to limit expansion.' Alternatively, the split ring 7 may be integral with an outer ring 8, Fig. 3, having shoulders 9 for co-operating with projections 10 on the ends of the split ring. In both of these forms, the ring is expanded by pin pliers engaging holes 6 in the ring ends. In a further form, Fig. 5, the split ring is integral with an outer ring provided with projections 13 adapted to engage recesses 12 in the split ring ends to retain the split ring in expanded condition. The ring is expanded by claw pliers engaging recesses 14, 15 in the rings 7 and 8 respectively.
Patent GB-532837-A (GB)
Title: Improvements in sprinkler systems for extinguishing fires and the method of operating the same
IPC: A62C35/60
Filed: 1939-09-21
Abstract: 532,837. Fire extinguishing. BAGGULEY, W. W., ALBON, H. A., and ALBON, T. V. Sept. 21, 1939, No. 26311. [Class 47 (ii)] Sprinkler nozzles A, Fig. 1, for extinguishing fires are arranged in groups and each group is automatically brought into action by electrically operated means controlled by a switch B placed near combustible material and operated when temperature rises unduly. The controlling switch, Fig. 3, comprises a sleeve D and base C of insulating material with a stud E forming one contact. The other contact consists of a spring plunger F with an extension G supported by fuzible struts M and a bridge piece L. On melting of the struts M the circuit D, E is closed. Each nozzle of the water supply has a central opening O, Fig. 5, closed by a disc P having a conical seat. An explosive cartridge Q which can be electrically fired is held against the disc P by a ring R with arms R<SP>1</SP>. In operation, an electric current from the main or otherwise will fire each cartridge in a group and release water from the nozzles.
Patent GB-382714-A (GB)
Title: Improvements in apparatus for playing table games, and the like
IPC: A63D15/00
Filed: 1931-09-21
Abstract: 382,714. Table games. JEFFREYS, S. T., 41, Clapgate Road, Bushey, Hertfordshire. Sept. 21, 1931, No. 26347. [Class 132 (ii).] In a table game simulating billiards wherein the playing cloth 4 is maintained flat by means of a folding framework comprising members 5, 6, 8, 9, 11, 12 connected by links 7, 10, 13, 14, 15, 16, these members are embraced by endless bands 19 of flexible or resilient material spaced by distance pieces 20. The underside of the framework is channelled or faced with a non-slip material. The side members may be detachable from the link instead of being folded. Spring-pressed ball catches may co-operate with recesses in the links.
Patent GB-1075467-A (GB)
Title: Improvements in or relating to polyurethanes
IPC: C08G18/66
Filed: 1964-06-25
Abstract: Elastic polyurethanes are prepared by reacting a mixture of a hydroxypolyether of formula <FORM:1075467/C3/1> of M.W. 1000-3000 and a glycol of M.W. below 500 with an aliphatic or cycloaliphatic diisocyanate, the resulting reaction product being subjected to a thermoplastic processing operation, e.g. extrusion, injection moulding and blow moulding and then tempered for at least 50 hours preferably at a temperature of 80 DEG  C.