baber/WOPTO huggingface dataset:
Patent GB-1422137-A (GB)
Title: Transparent image forming sheet
IPC: G03F1/92
Filed: 1972-12-18
Abstract: 1422137 Image forming sheets KANSAI PAINT CO Ltd 18 Dec 1972 [18 Dec 1971] 58365/72 Heading B2E [Also in Divisions D1 D2 G2 and H4] A transparent image-forming sheet comprises a transparent film base, an opaque conductor layer on one side of the base, and a semiconductor layer on the opaque conductor layer, the sheet having the characteristic that application of an electric voltage between the opaque conductor layer and a stylus electrode contacting the surface of the semiconductive layer will render transparent the semiconductive layer and the conductor layer underlying the stylus to form an image. Contrast may be improved by further development e.g. by a chemical etching process or by a physical dissolving and rinsing process. The film base may be made of a transparent plastics material e.g. polyester, cellulose acetate, polyvinyl chloride, polyvinylidene chloride, rubber chloride, polyethylene, or polypropylene, regenerated cellulose, or glass. The opaque conductor layer may be a vapour-deposited metallic e.g. Al or carbonaceous layer, a metallic foil laminated onto the base film, or a coating containing a conductive powder e.g. a metallic powder, carbon black, graphite or titanium sesquioxide. The semiconductive layer may comprise (1) an electrolytically reducible, semiconductive metallic compound e.g. a doped zinc oxide or doped titanium oxide; or (2) a mixture of a non-conductive metallic compound e.g. zinc oxide, titanium dioxide, lithopone, iron oxide, chromium oxide, barytes, calcium carbonate, clay, cadmium oxide, cadmium sulphide, zinc selenide, antimony oxide, zinc titanate, barium titanate, silver oxide, selenium oxide, zirconium oxide, or vanadium pentoxide, and a conductive substance e.g. a metallic powder, carbon black, or graphite powder; or (3) a semiconductive polymer e.g. a polyvinyl benzyl quaternary ammonium salt, polyvinyl carbazole, a polyethyleneimine derivative, an oligostyrene sulphonate, or a polymer or copolymer of an ethylenically unsaturated phosphoric acid ester. The semiconductive layer may have a volume resistivity of 10<SP>3</SP>-10<SP>6</SP> ohm. cm, in the case of (1) and (2), or a surface resistivity of 10<SP>4</SP>-10<SP>9</SP> ohm. cm, in the case of (3).
Patent GB-1292633-A (GB)
Title: Process for reducing the permeability of porous rock
Inventor: LEES WILLIAM ARTHUR
IPC: C09K17/26
Filed: 1969-11-28
Abstract: 1292633 Waterproofing permeable rock BORDEN CHEMICAL CO (UK) Ltd 30 Oct 1970 [28 Nov 1969] 58405/69 Heading E1F The permeability of rock, e.g. sandstone, having an initial permeability less than K-10 cm. S<SP>-1</SP>, is reduced by injecting into it a resorcinol-formaldehyde solution at a pressure of at least 10 psi and in excess of the back pressure of ground water and maintaining pressure until the injected material has set. The solution used is of 3-25% concentration, contains formaldehyde in an amount equivalent to at least one mole per mole of resorcinol and has a pH of 7-10, maintained by an alkali content, e.g. of NaOH. An inorganic salt may be added to promote hardening e.g. NaCl, KCl, NaNO 3 , Na 2 CrO 4  and/or MgCl 2 . A solution of such salt may be injected prior to the grouting solution. This latter may take the form of an alkali-resorcinol solution and a separate aqueous formaldehyde solution, the solutions being mixed immediately prior to or during injection.
Patent GB-1374780-A (GB)
Title: Photographic materials containing a bis-aminimide compound
IPC: G03C5/305
Filed: 1971-12-17
Abstract: 1374780 Antistatic treatment for photographic materials KONISHIROKU PHOTO INDUSTRY Co Ltd 17 Dec 1971 [18 Dec 1970] 58664/71 Heading G2C [Also in Division C2]  Antistatic compounds for use in a light-sensitive silver halide photographic emulsion or element or in a photographic treatment bath (e.g. a developing, stop, fixing or water mark preventing solution) are of formula:- wherein each of R 1 , R 3 , R 5  and R 7  independently represents an alkyl group having 1 to 4 carbon atoms; each of R2 and R6 independently represents (i) an alkyl group which is unsubstituted or substituted by halogen, hydroxy or alkoxy, (ii) an aryl, aralkyl or aryloxyalkyl group the alkyl portion of which is unsubstituted or hydroxy-substituted, and the aryl portion of which is unsubstituted or ring-substituted; or (iii) a heterocyclic group; and R 4  represents a divalent group. Reference has been directed by the Comptroller to Specifications 1178697 and 1265163
Patent GB-1439870-A (GB)
Title: Spray head for erasing smoke
IPC: A62C37/10
Filed: 1973-12-19
Abstract: 1439870 Spray-producers NITTAN CO Ltd 19 Dec 1973 [5 Feb 1973] 58805/73 Heading B2F [Also in Division A5] A spray head for erasing smoke, comprises a spray nozzle 1 provided with means for spraying liquid in the form of a diverging stream of drops, and a frusto-conical baffle 2 screwed to the outlet end of said nozzle, said baffle having holes through which air is drawn owing to the difference in air pressure between the inside and the outside of said member when said stream of drops passes therethrough. A passage 12 passing through the nozzle is cylindrical in its upper portion and converges to a venturi constriction 13, beyond which it diverges to an aperture 14, the divergent part having a conical angle to limit the spread of water drops to e.g. 100‹. The baffle has a conical angle of e.g. 90‹. A helical member 3 inserted in the cylindrical portion of passage 12 provides a high pitch square section helical passage and imparts to the liquid a rotational motion, the liquid being delivered to said neck portion 13 and diverging, once it passes the neck, in the form of laterally sprinkled drops. Baffle 2 collects the small drops at the spray surface.
Patent GB-1410120-A (GB)
Title: Process for the production of hydrogen and oxygen
IPC: C01B13/02
Filed: 1973-12-21
Abstract: 1410120 Production of hydrogen and oxygen RHEINISCHE BRAUNKOHLENWERKE AG 21 Dec 1973 [29 Dec 1972] 59347/73 Heading C1A Hydrogen and oxygen are produced continuously by the chemical decomposition of water in the steps (i) conversion of steam and carbon monoxide into hydrogen and carbon dioxide in known manner; (ii) separating carbon dioxide from the resulting mixture; (iii) heating the carbon dioxide with sulphur dioxide in an aqueous medium to a temperature from 250 to 400 C. and a pressure of 40 to 200 atmospheres to give carbon monoxide and sulphuric acid; (iv) separating carbon monoxide from the resulting mixture; (v) concentrating the remaining sulphuric acid; (vi) treating the concentrate with a metal oxide (e.g. ferric oxide, aluminium oxide or zinc oxide) to produce a sulphate capable of conversion on heating to a metal oxide and sulphur trioxide or sulphur dioxide and oxygen; (vii) decomposing the sulphate by heating it to a temperature above 400 C. and decomposing any sulphur trioxide by heating it to a temperature above 800 C. and (viii) separating off the sulphur dioxide from the resulting gas mixture by quenching it to a temperature below 300 C. and recovering the oxygen. The carbon monoxide from step (iv) is recycled to step (i), and the sulphur dioxide from step (viii) is recycled to step (iii) while hydrogen is recovered from step (ii) and oxygen is recovered from step (viii). The heat required for the process may be provided by coolant issuing from a high temperature nuclear reactor.
Patent GB-1372225-A (GB)
Title: Ionically conducting membrane suitable for use as a separator in an alkaline cell
IPC: H01M50/494
Filed: 1971-12-22
Abstract: 1372225 Separator ZLEHIT p r i BAN 22 Dec 1971 [7 Jan 1971] 59689/71 Heading H1B [Also in Division C3] An alkaline cell includes as separator an ionically conducting membrane made by subjecting a surface of a film of low density polyethylene to ultraviolet radiation in the presence of a sensitizer and graft polymerizing an ethylenically unsaturated carboxylic acid on to the irradiated surface. In the examples, the acid used is methacrylic acid and the grafted films are treated with potassium hydroxide.
Patent GB-1384713-A (GB)
Title: Hue control circuit for a colour television receiver
IPC: H04N9/64
Filed: 1971-12-29
Abstract: 1384713 Colour television RCA CORPORATION 29 Dec 1971 [7 Jan 1971] 60353/71 Heading H4F A colour television receiver is provided with tint control means which allows phase adjustment relative to the synchronizing burst of the locally-generated reference oscillator producing the chrominance demodulation signal, and colour background control means coupled to the tint control to vary an operating point of the kinescope. Fig. 2 illustrates how variable resistor forms part of phase-shift network 18, 20 and also of D.C. circuit 18, 24 controlling for example a CRT cathode or grid potential to act on one of the three colour guns. In an alternative arrangements the coupling between the two controls may be mechanical (Fig. 5, not shown). A further alternative (Fig. 6, not shown) describes the addition of the colour-reference signal, with variable phaseshift, to the chrominance signal before demodulation to effect the background control simultaneously with tint control by the usual phaseshift of the reference oscillator for tint control.
Patent GB-1219629-A (GB)
Title: Pressure sensitive adhesive
IPC: C09J163/00
Filed: 1968-12-20
Abstract: 1219629 Pressure-sensitive adhesive B F GOODRICH CO 20 Dec 1968 [21 Dec 1967] 60640/68 Headings C3B B1D2C B1N1A B1N6D3 B1N6D5 and B1N6D7 A pressure sensitive, creep resistant adhesive material comprises a backbone polymer of carboxy terminated polybutyl acrylate, cured by reaction with a liquid epoxy resin and an amine activator. The epoxy resin may be a polymeric reaction product of a polyfunctional halohydrin with a polyfunctional hydrogen-donating reactant such as an amine, alcohol or phenol. The amine activator may be a tertiary or a mixed amine. The carboxy end groups are introduced into the polymer chain by polymerizing the monomer(s) in the presence of an aliphatic azodicarboxylate. In the examples, butyl acrylate is copolymerized with one or more of butadiene, acrylonitrile and acrylic acid, in the presence of azodicyanovaleric acid in acetone, and the resulting polymer is mixed with the diglycidyl ether of bisphenol A, 2,4,6-tri- (dimethylamino-methyl) phenol, and optionally a polyindene resin and carbon black, and cured. The cured polymers are creep resistant and have superior adhesive strength.
Patent GB-1269910-A (GB)
Title: An arrangement for controlling the supply of flushing water in sanitary apparatus
Inventor: SJOBERG CARL AXEL
IPC: E03D13/00
Filed: 1970-12-22
Abstract: 1,269,910. Electro-physical measurement & control. C. A. SJOBERG. Dec. 22, 1970 [Dec. 23, 1969], No.60839/70. Heading G1N. In apparatus for automatically flushing urinals &c. in dependence upon the change in resistance between two electrodes when there is an increase urine concentration, there is a delay between the increase in signal and the operation of the flushing magnet-valve, (-preferably provided by an R. C time-delay circuit).
Patent GB-1280169-A (GB)
Title: Position encoding device
IPC: H03M1/00
Filed: 1969-12-16
Abstract: 1280169 Encoding position McGKAW-EDISON CO 16 Dec 1969 [17 March 1969] 61256/69 Heading G4H  An encoder for use with a meter, comprises two discs 20 and 21, having radial arrays of holes 30, arranged to represent the position of the discs in a binary code. Between the discs are photoresistive elements 48, 48a, 48b, 48c in register with the hole location along a given radius. Two lamps 27 and 28 are arranged outside the discs. These lamps are energized in turn so that the photoresistive elements read the coded discs in turn. The meter drives a cam 36 through shaft 35, every revolution of the shaft causes link work 37, 40, 42, 44, 43 which bears against the cam surface, to rotate wheel 21 which has ratchet teeth on its periphery, by one position. For each revolution of wheel 21, wheel 20 rotates by one position, the arm 43 being allowed to engage the teeth on wheel 20 by an extra deep tooth on wheel 21. The photoresistors 48, 48a, 48b, 48c are connected in series with differently weighted resistors R1, R2, R3, R4, Fig. 1. Thus depending on the combination of photoresistors illuminated, different charging currents flow into capacitor C1 Therefore the rate of firing of unijunction transistor Q1 depends on the hole combination in line with the photoresistors. The position of the two coded discs is thus represented by the output frequency of the relaxation oscillator comprising the capacitor C1 and the unijunction transistor Q1.
Patent GB-1371330-A (GB)
Title: Catalytic reactors
IPC: F01N3/28
Filed: 1971-12-17
Abstract: 1371330 Purifying I C engine exhaust gases BRITISH LEYLAND MOTOR CORP Ltd 17 Dec 1971 [30 Dec 1970] 61727/70 Heading F1B In a catalytic reactor a stainless steel gauge 12, supporting a bed 13 of catalytic material, e.g. spheroidal pellets, is supported on corrugations 15 on a support plate 14. The plate 14 may be perforated in the region of the corrugations 15 which extend in the general direction from the reactor inlet 17 to the outlet 18 and follow a zig-zag path, Fig.2 (not shown). The bed 13 is retained on the gauge 12 by a gauge 10.
Patent GB-693058-A (GB)
Abstract: 693,058. Switch contacts. BOSCH GES., R. Jan. 26, 1951 [Feb. 6, 1950], No. 1995/51. Class 38 (v) The contact breaker lever of an ignition interrupter, having two arms 1, 2 disposed at an angle of not more than 90 degrees from the pivot 10, is bent up into box girder form from a single piece of material stamped from sheet metal as in Fig. 3. The sheet metal is bent along the dotted lines so that the parts 12, 13 become parallel and the holes 9 can receive a sleeve beating 10. The parts 14, 15 overlap and have secured to them by means of a rivet 8 the cam follower 6 and the spring 7. The part 11 carries the contact 3.
Patent GB-722783-A (GB)
Title: Improvements in and relating to internal combustion engines
Inventor: SMITH JAMES MILLAR
IPC: F16F15/26
Filed: 1954-01-01
Abstract: 722,783. Balancing reciprocating engines. ENGLISH ELECTRIC CO., Ltd. Jan. 1, 1954 [Jan. 9, 1953], No. 715/53. Class 122 (3). In an internal combustion engine having at least two banks of cylinders set at an angle to one another and operating on a crank-shaft having all its throws in one plane the unbalanced secondary forces are balanced by a balance weight or set of balance weights rotating at twice crankshaft speed about an axis in the bisecting plane of the angle included by two adjacent banks and other balance weights or sets of balance weights rotating in the opposite sense to the aforesaid one at the same speed about axes arranged symmetrically to the first axis about the plane of symmetry of each bank. Fig. 5 shows an arrangement according to the invention for a V-eight cylinder engine in which a gear-wheel S on the crankshaft r engages a gear-wheel U of half its diameter on an auxiliary shaft B, C carrying a balance weight or set of balance weights and geared by means of gear-wheels T, J and W of equal size to auxiliary shafts A and D each carrying other balance weights or sets of balance weights, the axis of shaft B, C being in the plane bisecting the angle between the two banks of cylinders M and the axes of shafts A and D being arranged symmetrically to the axis of shafts B, C outside the planes through the centre lines of the cylinders of each bank.
Patent GB-2003818-A (GB)
Title: Loading pallets
IPC: B65G57/24
Filed: 1978-08-25
Abstract: A pallet loader comprises including a surface where upon the articles to be loaded to the pallet are assembled into a row, a pusher for a collecting plate 21 on which a layer of articles to be stacked are formed manually or by elements 12-16, and means for obtaining a vertical displacement of the collecting plate to bring it level with the top of the stack being formed on a pallet lying on a stationary support, the displacement means comprising a unitary frame supporting said collecting plate for vertical and horizontal movement, said frame further comprising tiltable means 23 for arresting the layer of articles during a horizontal movement of the collecting plate away from its position above the pallet. <IMAGE>
Patent GB-2029650-A (GB)
Title: Electrical connectors
IPC: H01R4/24
Filed: 1978-08-29
Abstract: An electrical connector of the kind wherein an electrical connection between a contact of the connector and an insulation-covered wire is achieved by providing the contact with a portion that can be caused to penetrate the insulation and be forced into electrical engagement with the wire itself, is formed in two parts, the first of which comprises a housing 7 accommodating at least one contact 1 fitted with a rigid pin 2, and the other part consists of a casing 13 adapted to receive immovably in a bore 14 thereof a doubled-back or angularly disposed portion 12a of one or more insulation covered wires 12. When the two parts of the connector are interengaged by sliding them together a contact pin 2 of the first part is very accurately axially aligned with a bent over end portion 12a of a wire 12 so that after the pin 2 penetrates the insulation of the wire at the bend during engagement of the two parts of the connector, the pin 2 passes axially and longitudinally into the end portion 12a of the wire so as to make considerable and intimate contact therewith. <IMAGE>
Patent GB-2034985-A (GB)
Title: An electrical machine
IPC: B60L50/13
Filed: 1978-10-11
Abstract: An electrical machine comprises a rotor (1), a multi-phase stator (4), (5) and a converter (10 10') combined structurally with the stator such that the main stator winding contacts (9) may easily be connected to the terminals of the converter and operative to vary the number of phases of the stator winding while the frequency and/or amplitude of the winding voltage is kept constant or varied. The converter may comprise thyristors ignited at fixed times in a fixed sequence by a control device (12) and extinguished by natural commutation, or cam operated switch contacts. The machine may be operated in the generator mode in which the frequency and amplitude of the voltage output may be varied while the speed of rotation remains constant, or the motor mode in which the speed of rotation may be varied while the frequency and amplitude of the mains voltage remains constant. The machine is suitable as a diesel-electric locomotive generator or for rolling mill drives and conveyors generally. <IMAGE>
Patent GB-2029968-A (GB)
Title: Displacement measurement
IPC: G01D5/14
Filed: 1978-10-26
Abstract: This invention relates to a read- out device for optical measuring instruments comprising a movement stage and an electrical unit responsive to such movement, said response being in the form of electrical signals which are capable of being translated into linear outputs. The electrical unit is a linear variable differential transformer. This is particularly suitable for use in precision microscopes. The device is relatively inexpensive, and the method has the important advantage that the viewing of the object being observed need not be halted whilst precision readings are being taken. The latter aspect is vital in cases where continuous observation is necessary.
Patent GB-2007865-A (GB)
Title: Liquid display devices
IPC: G02F1/1337
Filed: 1978-10-25
Abstract: Liquid crystal display cell substrates for providing a 25 DEG  to 90 DEG out of plane tilted alignment are obtained by treatment to give a homeotropic alignment followed by oblique evaporation of e.g. silicon monoxide, magnesium fluoride, or silicon dioxide, onto the slide surface. The evaporation angle is less than 15 DEG  to the slide surface and is typically 5 DEG . Increasing the thickness of the evaporated material lowers the final tilt angle from 90 DEG  toward 25 DEG . The homeotropic alignment may be provided by plasma cleaning, immersion in chromosulphuric acid and followed by baking, or detergent cleaning with ultrasonic agitation followed by baking.
Patent GB-2009536-A (GB)
Title: Starting circuits for discharge lamps
IPC: H05B41/04
Filed: 1978-11-15
Abstract: Rapid starting of a discharge lamp FL is obtained by charging a ballast capacitor C1 via a series circuit including an electrode H1 a zener diode ZD, the gate-cathode junction of a thyristor TH and an electrode H2. When the potential across the zener diode is sufficient to breakdown the diode, the thyristor conducts and a large pulse of heating current flows through the electrodes H1, H2. The pulse occurs at repeated intervals until the lamp strikes whereupon further charging of the capacitor does not occur and the voltage across the lamp is insufficient to cause breakdown of the zener diode. <IMAGE>
Patent GB-2046165-A (GB)
Title: Shaping Biomaterial
IPC: A61F2/24
Filed: 1979-04-11
Abstract: A method of shaping biomaterial in which, during treatment with a chemical treatment fluid, it is constrained by shaping forces, to provide ease and permanence of shaping. In the preferred application a cusped valve (1) of biomaterial mounted on an approximately matching stent (2) is treated with a fixative liquid (17) to fix the biomaterial of the valve (1), the valve (1) being subjected, during the treatment with fluid (17) to forces such as to constrain its biomaterial to remove dimensional inaccuracies in the valve, (e.g. fit of the valve on its stent and/or shape of the valve cusps), preferably while holding the valve in its closed condition. The valve can be a natural valve or one fabricated from biomaterial. The containing forces can be applied hydrostatically or by means of dies, for example. <IMAGE>
Patent GB-2018680-A (GB)
Title: Production of webs with embossed or textured surfaces
IPC: B44C1/20
Filed: 1979-04-12
Abstract: A process for producing elongated, continuous sheets or webs having an embossed or textured surface at least a portion of which is in registration with a coloured design, in which a pattern or design of at least one heat-foamable plastisol is printed on a substrate and gelled, the printed and gelled plastisols are over-printed by at least one and preferably a plurality of colours in registration with the respective plastisol designs preferably by a plurality of sequential rotogravure printers; and heat is applied to foam the plastisol(s). Registration between the foamable plastisols and the overprint is therefore maintained even if the substrate is dimensionally unstable during processing.
Patent GB-2020557-A (GB)
Title: Medical instrument for removing foreign bodies
IPC: A61M25/04
Filed: 1979-05-14
Abstract: This invention relates to a medical instrument for the removal of foreign bodies out of physiological channels, such as ureters, arteries, bronchi and suchlike, having a flexible tube 1 for insertion into the physiological channel involved, said tube having an operating element 5 at its operator end and an expandable, element 6 at its insertion end, said expandable element being affixed at one end to the end of the tube 1 and at the other end to the end 8 of a controlling cable 4 and which via the controlling cable 4 which passes through the tube and which is connected to the operating element can be expanded and collapsed. The expandable element comprises a tube section made of a woven fabric or a braided fabric, the threads of which are spaced one from the other and which take an approximately screwthread-like course when the element is in the collapsed state. After insertion into the physiological channel, the element is expanded, it remaining permeable to fluids, but bearing foreign bodies with it on removal. <IMAGE>