baber/WOPTO huggingface dataset:
Patent GB-1412164-A (GB)
Title: Ionization-type fire sensor
IPC: G01N27/64
Filed: 1973-07-17
Abstract: 1412164 Ionization fire alarms CERBERUS AG 17 July 1973 [17 July 1972] 34093/73 Heading G4N An ionization fire sensor unit provides a warning signal at the approach to the alarm threshold, and before the alarm signal. The warning signal may indicate incipient fire, or a faulty detector, e.g. due to precipitation of dust.  As shown, Fig. 1, an LED is connected in series with the FET monitoring the ionization chambers, and adjustable bias resistor 5 determines the warning level, at which the LED begins to glow. At the alarm level transistor 12 conducts and due to positive feed-back through resistor 5, abruptly draws an increased current, for signalling to the central station, and also "locks-on". Warning central station.-To repeat the warning signal to the central station the LED may co-operate with a photoresistor connected over a third line-wire Fig. 3 (not shown) or the LED current may be monitored by a third wire Fig. 4 (not shown). Alternatively the warning current may be monitored by a further transistor (22) to switchon a multivibrator (23, 24) sending an A.C. signal over the lines, Fig. 5 (not shown), or where an oscillating line termination is provided as in Specification 1,319,615, the warning transistor may switch a capacitor across the line to short-out the end-of-line signal, Fig. 6 (not shown).
Patent GB-1240708-A (GB)
Title: Polyurethane foams
IPC: C08G18/00
Filed: 1968-07-17
Abstract: 1,240,708. Polyurethane foam. UPJOHN CO. 17 July, 1968 [31 July, 1967], No. 34124/68. Headings C3C and C3R. [Also in Division A4] Flexible polyurethane foam substantially free from urea linkages and comprising a resilient cellular core of substantially uniform density and an integrally formed substantially continuous microcellular skin surrounding the core, the skin having an average thickness of at least 0À05 centimetres, the boundary between the skin and core being characterized by an abrupt change in density may be prepared by reacting under foam producing conditions in the absence of extraneous water (a) a polyisocyanate, (b) a polyol having an hydroxyl equivalent weight of 300 to 3000 and a functionality of 2 to 4, (c) a polyurethane reaction catalyst and (d) a polyhalogenated aliphatic hydrocarbon blowing agent. The reaction is suitably carried out in the absence of a surfactant or in the presence of a peripheral foam destabilizer which is a conventional surface-active agent used at different concentrations to those normally used in the preparation of flexible foams. In a typical example a vinyl resin reinforced polyether polyol, an ethylene oxide/trimethyolpropane polyol, a dimethyl siloxane surfactant, triethylene diamine, dibutyltin dilaurate and trichlorofluoromethane were mixed and reacted with a modified methylenebis - (phenylisocyanate) in a preheated aluminium mould to form a resilient foam having a skin thickness of about 0À2 centimetres.
Patent GB-453117-A (GB)
Title: Improvements in or relating to waterproof coats
IPC: A41D27/28
Filed: 1935-03-04
Abstract: 453,117. Waterproof coats. LEVY, D., 35, Dutton Street, Cheetham, Manchester. March 4, 1935, No. 34131/34. [Class 141] A waterproof coat is formed with a box pleat b, Fig. 2, provided with ventilating eyelets d, which may pass through a reinforcing strip g, the three thicknesses of the pleat being secured together at intervals by stitching b<1>, Fig. 8, which is covered by patches c. Instead of using eyelets, the ventilating means may be provided by slitting the inner edges of the pleats and securing the slit edges together, internally or externally, by strips of net fabric. More than one box pleat may be provided, either at the back or front of the coat. Specification 358, 748 is referred to.
Patent GB-184416-A (GB)
Title: Improvements relating to ratchet spanners and the like
IPC: B25B13/46
Filed: 1921-12-20
Abstract: 184,416. Accles & Pollock, Ltd., and Clift, W. T. Dec. 20, 1921. Ratchet wrenches; inserted wrenches.-A ratchet wrench or the like comprises a spindle driven by a handle through a single ratchet mechanism comprising two ratchet faces with radial teeth, formed respectively on the handle and spindle and kept in engagement by a spring, the spindle being provided at each end with male or female hexagonal or equivalent parts to engage a box spanner or other tool to drive it in either direction. A spindle 5 is provided with hexagonal ends 6, 7 and is driven by a handle 1 through a pair of ratchet faces 3, 8 held in contact by a spring 9.
Patent GB-1049085-A (GB)
Title: Bonding textile materials to rubber
Inventor: FREYTAG HELMUT
IPC: C08J5/10
Filed: 1965-08-10
Abstract: A composition comprises a vulcanizable natural or synthetic rubber, hexamethylol melamine, the hydroxyl groups of which may be esterified or partly etherified, and one or more m-substituted benzene derivatives containing -OH, -NH2, or -OCOCH3 groups or 1,5-dihydroxynaphthalene.  The preferred compound is resorcinol.ALSO:Textile materials adhere directly to a composition comprising a vulcanizable natural or synthetic rubber, hexamethylol melamine the hydroxyl groups of which may be esterified or partially etherified, and one or more m-disubstituted benzene derivatives containing -OH, -NH2, or -OCOCH3 groups or 1, 5-dihydroxynapthalene by vulcanizing the mixture.  Textile materials exemplified are rayon, nylon and polyester cords.  The textile cords may be pretreated with a conventional butadiene-vinyl pyridine latex "solutioning" composition.
Patent GB-779628-A (GB)
Title: Light source
IPC: F21K2/00
Filed: 1953-06-25
Abstract: 779,628. Discharge lamps; cathode-ray tubes; electrode materials. VIERKOTTER, P. June 25, 1953 [June 28, 1952 ; June 28, 1952], No. 34214/56. Divided out of 779,627. Class 39(1). - Light source comprises a source of accelerated charged particles in an envelope constituted by, or having an internal surface of a luminescent material, the charged particles impinging on zirconium oxide, which may be on one or more electrodes, to heat it such that it emits visible light and invisible short wave radiation such as ultra-violet light and X-rays, the visible light passing through the luminescent material without being substantially weakened and the invisible short wave radiation being converted into visible light in the luminescent material. In the construction shown in Fig. the envelope 3 formed of a self-supporting luminescent material contains an ionisable gas or vapour and two ring electrodes 7 and 8 comprising zirconium oxide. The ring 8 is fixed to a currentsupply line 9 and the ring 7 is connected by a current supply line 10 to a ring 11 which is earthed at 12. Two plates can be provided instead of the rings. More than two rings or plates may be provided. A transformer can be used as current source. The cathode may be incandescent, oxide, photo or cold. In the construction shown in Fig. 3, which is similar to the structure shown in Fig. 2 of Specification 779,627 the envelope 3 which can be of glass and which carries the luminescent material 4 encloses the cathode 24 consisting of a peg of material of high melting point provided with tips 25 and thin portions 36. The envelope 3 is evacuated through the pump connection 27. The cathode 24 is connected bv a terminal 28 to a transformer 29 which is earthed. The electrons from the cathode 24 impinge on the fine mesh inner surface of the hollow, spherical thin-walled radiator 32 made of zirconium oxide and raise it to incandescence to emit visible light, ultra-violet light and X-rays. The radiator 32 is connected to supports 33 fastened to a metal ring 34 which is earthed together with the luminescent material 4. Reflecting fluorescent screens 35 and a reflecting screen 37 which may contain luminescent material are provided. The screen 37 and its support 31 can be transparent and the reverse side of the support 31 can be coated with luminescent material. The whole support can consist of fluorescent glass. Several surfaces 37 can be used either parallel or at a slant or can be arranged around the envelope in a circle or polygon. The supply circuit can be arranged so that when the radiator 32 is incandescent the positive halfwave is connected to the cathode 24, the radiator 32 emitting electrons which impinge on the cathode which can be constructed as the radiator, the tips 25 being omitted or serving for momentarily instituting the discharge. The zirconium oxide can be carried by a fine-mesh screen of wire or can be provided by wire containing zirconium oxide.
Patent GB-429691-A (GB)
Title: Improvements in or relating to the purification of sugar factory and refinery juices
IPC: C13B20/02
Filed: 1933-12-05
Abstract: In the purification of sugar juices, there is added in a single step, an amount of lime or equivalent alkali exceeding the minimum amount necessary to bring the juice to the optimum isoelectric point of the colloidal impurities to be flocculated, such excess being insufficient to alter the pH of the juice to such an extent as to affect the state of aggregation of the colloidal impurities, but sufficient to confer on the juice that soluble alkalinity at which the removal of the flocculated colloidal impurities by filtration or like processes takes place readily, defecation of the juice by further addition of lime being dispensed with.  The pH to which the juice may be brought by the addition of lime or equivalent may be 10,6 to 11,4.  Liquid sulphur dioxide or sulphur dioxide gas or carbon dioxide gas under pressure may be introduced rapidly into the juice for completing the flocculation before filtration but after the addition of lime or equivalent.  Instead of carbon dioxide or sulphur dioxide, any electrolytically equivalent substance, for example, one which is capable of giving a high concentration of SO2, SO3, SO4, CO2, CO3, PO3 or P2O5 ions may be employed.  After the removal of the flocculated impurities, the juice is treated with a decalcifying agent to remove residual dissolved lime or equivalent, for example, with sodium carbonate or a soluble phosphate or phosphoric acid. Examples are given.  Specifications 364,635 and 394,498 are referred to.
Patent GB-619781-A (GB)
Title: Improvements in or relating to cigarette holding trays
IPC: A24C5/358
Filed: 1946-11-19
Abstract: 619,781. Welding cigarette-transit trays. LEGG, O. Nov. 19, 1946, No. 34245. [Classes 83 (ii) and 83 (iv)] [Also in Groups VI and XVII] A tray 1, for cigarettes made by a cigarettemaking machine, has end lugs 7 of inverted U form which slide on rails, the lugs being welded to the tray and having cutaway portions 11 for the welding electrode. The side of each lug, which is welded to the tray, may be dove-tailed into a cutaway part 6 thereof, or placed against the lug and spot-welded thereto. The cigarettes are held in position by a flat plate 4 which has lugs 5 sliding on the ends of the tray.
Patent GB-469009-A (GB)
Title: Improved electrical controlling device for grinding and abrading machines
IPC: B24B49/18
Filed: 1935-12-11
Abstract: 469,009. Grinding-machines. CLAYTON, C. E. EVERY-. (Wotan-und Zimmermannwerke Akt.-Ges.) Dec. 11, 1935, No. 34393. [Class 60] On the completion of the coarse grinding operation in an internal or other grinding-machine a lever 2 carrying a feeler diamond 1 engaging the work operates a measuring pin 4 to complete at contacts 5, 6 the circuit of a relay 8 and thereby effects the closure of a circuit energizing a relay 13. The movement of the armature of the relay 13 turns a sleeve 34 on a shaft 35 to move the normal reversing stops 36, 37 out of, and a stop 38 into, the path of stops 41, 42 on the machine table. The stroke of the table is thereby extended to cause the grinding wheel to be moved past a trueing diamond. The movement of the armature also closes a holding circuit for the relay 13 and an energizing circuit for a relay 21. A holding circuit for the relay 21 is completed by its operation. When the trueing operation is completed a cam 16 on the table opens a switch 17 to break the holding circuit for the relay 13. The fine grinding operation then takes place and, when the work is ground to size, the measuring pin 4 completes at contacts 6, 23 the circuit to a relay 24 which energizes a relay 25 to operate the sleeve 34 to allow the work table to move to its end or work-changing position. A holding circuit for the relay 25 is completed by its operation. At the end position a cam 32 on the table operates a switch 33 to de-energize the whole of the circuits. The circuits of the relays 8, 24 are supplied with low tension current by a transformer 43.
Patent GB-1472220-A (GB)
Title: Modular cast iron fin tube boiler
IPC: F22B15/00
Filed: 1974-08-05
Abstract: 1472220 Water-tube boilers AUTOMATION INDUSTRIES Inc 5 Aug 1974 [31 Aug 1973] 34401/74 Heading F4A In a water-tube boiler including a combustion chamber 18 and at least one module comprising a pair of cast iron headers 38 disposed on opposite sides of the combustion chamber 18, each header has a plurality of openings therein and corresponding cast iron finned tubes 40, having fins 62 cast integrally therewith, are located between the headers. A tie rod 60 is provided inside at least one of the finned tubes 40 and extends the full length of the tube to create a force which compresses the headers on to the tubes. As shown in Fig. 10 the tubes have baffles 75 having extensions 77 which fit closely to the edges of the fins 62 so as to direct the hot exhaust gases directly on to the tubes and fins.
Patent GB-1197913-A (GB)
Title: An Aiming or Sighting Device
IPC: G02B27/32
Filed: 1967-07-26
Abstract: 1,197,913. Aiming device. SOC. D'OPTIQUE, PRECISION, ELECTRONIQUE ET MECANIQUE. July 26, 1967 [July 29, 1966], No.34449/67. Heading G2J. An aiming device comprises a semi-reflective mirror S which reflects light from a target on to an objective lens L1 to form an image of the target in the focal plane P behind the lens L 1  a reticle R formed on a spherical surface, a light source E positioned at the centre of the sphere, and a collimating mirror M arranged so as to direct light from the reticle R which has been reflected by the mirror S through the mirror S and on to the lens L 1  to form an image of the reticle R in the plane P, the superimposed images being viewed through an eye-piece L 2 . The optical system, L 1 , L 2 , S, M is rotatable about a horizontal and a vertical axis with respect to the reticle sphere for receiving light from a target in any angular position. These axes may pass through the centre of the sphere or may be spaced from the sphere centre. In the second case, the reticle is rotated about the two axes without rotation about its own centre. In a modification, Fig. 3 (not shown) the reticle (R<SP>1</SP>) is formed on a concave part spherical surface and a lens (F) and plane fully reflecting mirror (M<SP>1</SP>) are provided instead of the focusing mirror M.
Patent GB-341180-A (GB)
Title: Improvements in and relating to manhole frames and covers, and the like
IPC: E02D29/14
Filed: 1929-11-12
Abstract: 341,180. Manhole covers. LEATHER, C. L., 23, Stanmore Gardens, Richmond, Surrey. Nov. 12, 1929, No. 34517. [Class 107.] A manhole cover is binged to its frame 1 in such manner that it requires to be lifted from its seating to a certain extent before it can partake of angular move. ment, and in its closed position it is prevented from being lifted from its seating to the extent necessary by means of one or more locking pieces 11. The cover may be in two parts 8a, 8b, which are each provided with a projecting hinge piece 8c adapted to fit between a pair of lugs 5c, 5d on the frame as shown in Fig. 1. A transverse binge pin on each hinge piece 8a is adapted to enter a slot 6b of vertical elongated form in the lugs 5c, 5d. The parts 8a, 8b when closed are adapted to rest on seatings provided at various positions in the frame and are retained in place by the locking pieces 11 arranged at each hinge. The locking piece 11, Fig. III, is provided with a depending tail-piece 11a adapted to fit easily in a space between the hinge piece 8c and the wall of the frame. A protuberance 11b on the tail-piece 11a is arranged to engage in a recess 4x in the frame to prevent upward movement of the cover and locking piece for more than a short distance. The locking piece is adapted to be lifted by means of a tool engaging in a recess 11c and can be withdrawn as shown at the right of Fig. III, thus allowing the cover to be lifted and moved angularly. The slots 6b in the hinge lugs may be open at the upper end, in which case the cover mav be removed from the frame or moved angularly as desired. The frame 1 is provided with an external base flange 3 and vertical walls 4.
Patent GB-521915-A (GB)
Title: Improvements in or relating to mining machines
IPC: E21C27/04
Filed: 1938-11-28
Abstract: 521,915. Mining-machines. NEWTON, CHAMBERS, & CO., Ltd., and LEWIS, O. F. Nov. 28, 1938, No. 34588. [Class 68 (i)]  A jib for supporting the cutter chain of a mining machine is built up from straight and curved lengths of cutter chain guide joined together endwise by separate key members fitted in sockets in the ends of the lengths and secured by bolts passing through the socket walls and the key members. For a machine moved at right angles to the plane of the jib to cut out a core of coal as in Specification 497,840, the jib is built of horizontal members 1, arcuate corner pieces 3 with supporting webs 7, and a vertical piece 2 in one or more interchangeable parts to vary the height of cut, the leading side of the jib having a chain-guiding channel 4. The vertical piece 2 is formed of two halves with steps 10 at their contacting faces, and an interposed key member 11, with central ribs 12, extending through the whole or at the ends only of the piece 2, bolts 13 connecting the parts and being held against rotation by nuts 17. The key 11 has spaced projections 23 fitting in recesses in the parts of the piece 2 and projects into a socket in the corner  pieces 3 which are split at 21 and are also secured to the key by bolts 13. A stud 22 is screwed into the end of the key. The guide ribs 5, 24 of the chain channel are in sections extending beyond the ends of the jib parts where they are rounded. The horizontal members 1 may be built up similarly.
Patent GB-1528999-A (GB)
Title: Gelled photopolymer composition
IPC: G03F7/032
Filed: 1976-08-19
Abstract: 1528999 Photopolymerizable reversibly gelled polymer compositions DOW CHEMICAL CO 19 Aug 1976 [20 Aug 1975] 34629/76 Headings C3R and C3V [Also in Division G2] A reversibly gelled composition which is a free radical curable by imagewise exposure to actinic radiation is obtained by contacting a dialdehyde (including hydrated or alcoholated derivatives thereof) as gelling agent with a composition comprising either (I) at least one polymer containing at least one ethylenically unsaturated group and at least two primary -OH and/or -SH groups and/or (II) at least one polymer containing at least one ethylenically unsaturated group and at least one polymer containing at least two primary -OH and/or -SH groups. I may be a polymer of formula as described and claimed in Specification 1,488,412. The dialdehyde may be glyoxal. The subject matter of Specification 1,467,090 is disclaimed.
Patent GB-212988-A (GB)
Title: Improvements in perambulators
IPC: B62B9/12
Filed: 1922-12-20
Abstract: 212,988. Fraser, J. A. Dec. 20, 1922. Seat bottoms; spring supports; bedsteads convertible into seats.-The seat of a perambulator consists of an external metal frame B filled in with leather, flexible fabric or wire webbing B<1>, the frame being carried by sliding spring-supported members arranged in the interior of the body. Each spring support may comprise a part C fixed to the body, a movable part D on which the seat frame rests and a spring E embracing both members C and D. A filling-in part F may be provided, resting on the two seats B and thus forming a spring-supported bed.
Patent GB-817204-A (GB)
Title: Variable-speed power transmission mechanism
IPC: F16H47/10
Filed: 1957-11-07
Abstract: 817,204. Variable-speed gearing. GENERAL MOTORS CORPORATION. Nov. 7, 1957 [Nov. 30, 1956], No. 34706/57. Class 80 (2).  A planetary gear drives the impeller of an hydraulic torque converter at reduced or direct speeds, the reactor being prevented from reverse rotation in reduced drive and being driven in direct drive of the planetary gear. An engine crankshaft 10, coupled to a casing 11, drives the ring - gear 21 of a planetary train B through a resilient coupling 20. The carrier 24 of the planet gears 22 is connected to the impeller 12 of an hydraulic torque converter A, the impeller having a drive member 16 splined to a tubular shaft 46. The sun gear 27 is splined to a sleeve 31 to which is also splined the inner member 43 of a one-wav clutch 43, 44, 45 to which the reactor 17 is connected. The turbine 14 of the converter is coupled to an intermediate shaft 50. The sun gear 23 is connected by shaft 31 with the turbine 29 of an hydraulic coupling C, whose impeller is driven by the ring-gear 21. The coupling C can be filled to cause the planet train B to run at direct speed and drive the impeller 12 and reactor 17 through the one-way clutch 43, 44, 45, or may be emptied through a valve 33 to allow the planet train B to drive the impeller 12 at reduced speed, when the one-way clutch prevents reverse rotation of the reactor. The intermediate shaft 50, tubular shaft 46 and sleeve 31 drive a change-speed gear having a rear unit unidirectional brake D, a rear clutch unit E, a rear planetary gear unit F, a reverse gear planetary unit G and a reverse unit brake H to provide four forward speeds and reverse to an output shaft 90, in the manner described in Specification 790,617.
Patent GB-476527-A (GB)
Title: Improvements in and relating to furnace roofs or arches
IPC: F27D1/02
Filed: 1936-12-17
Abstract: 476,527. Furnace roofs. KOPPERS' INDUSTRIEELE MAATSCHAPPIJ N. V., H. Dec. 17, 1936, Nos. 34711 and 34713. Convention dates, Dec. 30, 1935 and Feb. 10, 1936. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 18, 1936.] [Class 51 (ii)] In a furnace roof support of the kind in which the thrust of the arch i taken by spring - pressed levers 35 carrying the arch abutments 31, the levers, and preferably also the adjusting means fo the springs 38, are mount ed on the vertical buck stays 4 and of the furnace bracing. In the construction shown in which the roof comprises an arch 8 covered by a heat-insulating layer 9, each abutment 31 is connected to its levers 35 by a ball-andsocket joint 33, and a bolt 43 is provided by which the abutment can be clamped in position when the arch reaches its working temperature. The abutments are protected from the heat of the furnace by movable bricks 30.
Patent GB-1375081-A (GB)
IPC: C03C8/02
Filed: 1972-07-25
Abstract: 1375081 Coated glass CORNING GLASS WORKS 25 July 1972 [6 Aug 1971] 34712/72 Heading B2E [Also in Division C1] Glass comprising not less than 80% by weight SiO 2  is glazed by coating with Ta 2 O 5  and firing. The Ta 2 O 5  may be applied as an aqueous suspension, or as TaCls; the applied layer dried; and then firing at, e.g. 650C to give a layer of thickness 10-50Á. The suspension may be at pH 8-9 and contain 7-14% by weight tantalum compound. The coating which may contain Al 2 O 3  and SiO 2  may be applied by dipping, plasma or flame spraying or by vapour deposition. The glazed product may be a lamp envelope, an electrical heating element shield or a furnace window.