baber/WOPTO huggingface dataset:
Patent GB-1277660-A (GB)
Title: Silver dye-bleach process of colour photography
IPC: G03C7/28
Filed: 1969-07-16
Abstract: 1277660 Bleaching catalysts for the silver dyebleach process FUJI PHOTO FILM CO Ltd 16 July 1969 [16 July 1968] 35904/69 Heading G2C A method of preparing a colour photographic image by a silver dye-bleach process comprises dye-bleaching a colour photographic light-sensitive element in the presence of a phenazine-N-oxide, as a bleaching catalyst, represented by the general formula: - wherein R, which may be the same or different, represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, an aryl group, a hydroxy group, an alkoxy group having 1 to 4 carbon atoms, a nitro group, a cyano group, a carboxy group, a sulpho group, an acylamino group, a sulphonamino group, a halogen atom or a carbocyclic aromatic residue formed by the condensation of two R groups bonded to two adjacent carbon atoms. The said phenazine-N-oxide may be present in the silver halide gelatino emulsion layer or a gelatino subsidiary layer of the colour photographic lightsensitive element, in the proportion 0À01 to 2% by weight based on the weight of the gelatin in said photographic layer. The said phenazine-N-oxide may be in the dye-bleaching bath in the proportion 0À0005 to 0À100 g. per litre of the dye-bleaching bath. The said compound may be present in a processing bath prior to the dye-bleaching processing, which processing bath may be a developer, fixing, stopping or hardening bath or a bath for containing the phenazine -N-oxide. Many examples of the phenazine -N-oxides are given.
Patent GB-801645-A (GB)
Title: Improvements in endless-chain cable hauling device
IPC: B63B35/04
Filed: 1956-11-23
Abstract: 801,645. Endless conveyers. SYNCRO MACHINE CO. Nov. 23, 1956 [Dec. 13, 1955], No. 35915/56. Class 78 (1). A hauling device for pulling heavy wire or cable in a processing operation consists of a pair of endless chains 80, 82 equipped with gripper shoes 81, 83 respectively arranged with opposed reaches on opposite sides of the cable C and pressed into contact with the cable by means of a pair of pressure rails 41, 42 positioned behind the respective chains and arranged for simultaneous sliding movement towards and away from the cable path. The sliding movement of the rails 41, 42 is accomplished by the provision on a base-plate 10 of a pair of grooved rails 29, 30 between which two slide members 31, 32 are mounted for sliding movement towards and away from one another. The rails 41, 42 are mounted on these slide members by sets of plates 33-36 and 37-40 respectively. These plates are of T-section, forming two recesses in one of which is secured the corresponding pressure rail 41 or 42 while bars 43- 50 form with the other recess guideways for the reception of rails 53, 54 which bear against the return runs of the chains. Springs 56 are mounted between blocks 59 on the rails 53, 54 and bars 51, 52 secured to plate 10 for urging the rails outwards to tension the chains 80, 82. The slides 31, 32 are connected for simultaneous movement towards and away from the cable by the provision of racks 70, 71 on them which co-operate with freely mounted pinions 67. Two fluid-pressure cylinders 61, 62 are mounted on the slide 32 in cut-away portions of plate 10, their piston rods being, secured to brackets 64 on the plate 10. Pressure fluid is admitted to the upper ends of the cylinders to cause the cable to be gripped and to the lower ends of the cylinders to release the cable. Each shoe 81 or 83 on the chain consists of a block of resilient material which is bonded to a channel-shaped plate 85 which can be slid on to and from a plate 87 carried by brackets 88 from the chain.
Patent GB-392480-A (GB)
Title: Universal joint
IPC: C22B19/06
Filed: 1932-12-20
Abstract: 392,480. Lubricating universal joints. RHEINISCHE METALLWAAREN UND MASCHINENFABRIK SÍMMERDA AKT.- GES., Sommerda, and FAUDI, F., 190, Hansa-AllÚe, Oberkassel, Dusseldorf, both in Germany. Dec. 20, 1932, No. 36091. Convention date, Aug. 1. [Class 12 (ii).] A single Hooke's joint comprises ball-pivots c received partly in shaft-forks a, b and partly in bearing-blocks d, retained in an intermediate ring e by a shrunk or pressed-on cover-ring f. The intermediate ring e has lubricant reservoirs e<1> communicating with the balls through an internal circumferential groove f<1> in the coverring and radial ducts d<1> in the bearing-blocks d, the reservoirs being filled through apertures closed by screw-plugs g. Packing-rings h prevent loss of oil and ingress of dirt.
Patent GB-1556941-A (GB)
Title: Column for a machinetool
IPC: B23B17/00
Filed: 1977-08-30
Abstract: The machine stand (1) is constructed from a mixture of sand and gravel, which is bonded with plastic. To save material and weight, a foam block (2) may be cast in. Erecting aids (3) and mounting surfaces (5) of metal may be produced in their finished-machine form and, appropriately positioned, cast into the machine stand (1). The machine stand may likewise be provided with guiding surfaces (4). Due to the use of plastic as the binder, dimensional changes caused by fluctuations in atmospheric humidity, decomposition caused by cutting fluid and shrinkage during hardening are avoided to a great extent. The machine stand is suitable in particular for grinding machines. <IMAGE>
Patent GB-361134-A (GB)
Title: Improvements in or relating to fuel injection devices for liquid fuel injection internal combustion engines
IPC: F02M63/00
Filed: 1930-12-02
Abstract: 361,134. Fuel injectors. SULZER FR’RES SOC. ANON., Winterthur, Switzerland: Dec. 2, 1930, No. 36276. Convention date, Dec. 31, 1929. [Class 7 (iii).] In a fuel injector of the type comprising a valve which is normally maintained on its seat mechanically but which is released to allow injection to take place under the pressure of fuel previously stored in an accumulator, the forces acting on the piston of the accumulator to inject the fuel are in part derived from a "hydraulic spring" constituted by the compressibility of the fuel itself. A piston 16, forming the movable wall of an accumulator chamber 5, is loaded by a spring 8 and also by fuel pressure admitted to a chamber 6 through a non-return valve 7 located in a communicating passage between chambers 5, 6. The fuel delivered under pressure by a pipe 14 forces the piston 16 upward against the combined force of the hydraulic spring and the spring 8, thus relieving the loading on a lever 11 which bears on a collar formed on the injection valve stem 3. The valve remains closed however, due to the action of a lever 10 which is loaded by the upward pressure on the piston 16 acting through the spring 8. This pressure is relieved by a rod 12 when injection is to take place. the valve then opening under the fuel pressure in the chamber 5; injection continues due to the pressures acting downwardly on the piston 16 until either the spring bears upon the end of the lever 11 or lever 10 is released.
Patent GB-1268102-A (GB)
Title: A semiconductor diode
Inventor: CLERC DENIS
IPC: H01L29/00
Filed: 1969-07-18
Abstract: 1,268,102. Semi-conductor devices. BROWN, BOVERI & CO. Ltd. 18 July, 1969 [22 July, 1968], No. 36339/69. Heading H1K] Large area semi-conductor slices cut from a grown rod are found to have a central zone of lower resistivity than the remainder of the material so that when manufactured into junction diodes avalanche breakdown occurs initially in this central zone and the permitted current density is exceeded. In order to overcome this problem the diode is provided with an electrode which is spaced from and surrounds the central zone so that when breakdown occurs in the central area the resistance of the material in the space between the electrode and the central zone limits the current flowing and provides a voltage drop so that breakdown is initiated in the remainder of the device. As shown, Fig. 1, a slice 1 of N-type Si is processed to form a P-type region 3 contacted by a P+ type region 2 and a Mo plate 8, the remainder of the slice forming an N-type region 4 which is contacted by means of an annular N + type region 6 and electrode 9. The diode is mounted in a gas-tight housing (not shown). The starting material has a central zone I of lower resistivity than the surrounding material so that when reverse biased the depletion layer 11 in the centre of the N-type region is thinner and the avalanche breakdown voltage is therefore higher than in the surrounding region. When breakdown occurs the current flows through the zone 12 causing a voltage drop, and the dimensions of the device are selected so that the sum of this voltage drop and the breakdown voltage of the central zone I is equal to or greater than the breakdown voltage of the outer part of the device so that breakdown occurs uniformly over the whole area of the diode.
Patent GB-817649-A (GB)
Title: Pilot valve controlled fluid-pressure controller
IPC: G05D16/06
Filed: 1955-12-20
Abstract: 817,649. Fluid-pressure servomotor-control systems. FAIRCHILD ENGINE & AIRPLANE CORPORATION. Dec. 20,1955 [Nov. 29, 1955], No. 36421/55. Class 135. A fluid-pressure controller comprises an inlet chamber 4, an outlet chamber 6, a supply valve 20 interconnecting the chambers, means controlling valve 20 and exposed to inlet pressure, e.g. diaphragm 18, for urging valve 20 open, a pressure control chamber 48 having restricted communication at 44 with the outlet, a pilot pressure chamber 30 having a bleed 41 to a fixed external pressure, e.g. atmosphere, a pilot valve connecting the chambers 30, 48 and comprising two parts, one 26 being urged towards the pilot valve closed position by means, e.g. hydraulic bellows 54, establishing an independently determined force and to the open position by pressure in chamber 48, and the other part 22 being controlled by diaphragm 18 so that it moves towards pilot valve open or closed position as the supply valve opens or closes, and means, e.g. passage 28 and diaphragm 14 connected to diaphragm 18 whereby pressure in chamber 30 acts on the supply valve in the opposite direction to the inlet pressure. When the pressure in bellows 54, loaded by spring 52, is reduced and outlet pressure raises the diaphragm member 26 of the pilot valve and escapes via a spring-loaded relief valve 34 until a required lower outlet pressure is attained, which is then kept constant by valve 20. Bellows 54 may be replaced by a diaphragm or weights, and the bleed 41 by notches in relief valve 34.
Patent GB-1365094-A (GB)
Title: Synthetic resin compositions
IPC: B22C1/22
Filed: 1971-08-03
Abstract: 1365094 Modified furfuryl alcohol polymers; foundry moulds CIBA-GEIGY AG 13 July 1972 [3 Aug 1971] 36531/71 Headings C3R C3P and C3N Polymers (I) of furfuryl alcohol (II) are cured by reaction with a polyisocyanate (III). I are defined either as polymerizates of II per se obtained by reaction in an acid medium or as condensates of II and formaldehyde, e.g. in a molar ratio II: HeHo of 1 : 0À1 to 1 : 1À5. III exemplified is bis(4-isocyanatophenyl)methane (IV). The polymers are useful in preparing foundry moulds and cores. These may be prepared by coating sand with a binder of I in 2-butoxyethanol with 2(diethylamino)ethanol catalyst and 3-N-(ethylamino)propyltriethoxysilane (coupling agent). A second batch of sand is treated with IV, the two batches being brought together, rapidly stored and compressed when cure takes place.
Patent GB-1278648-A (GB)
Title: A method of plastics encapsulating an assembly of electrical components
Inventor: COOPER DAVID EVANS
IPC: H01L23/16
Filed: 1969-08-12
Abstract: 1278648 Encapsulated electrical components MOTOROLA Inc 12 Aug 1969 [21 Aug 1968] 36597/71 Divided out of 1278647 Heading B5A [Also in Division H1] The subject-matter of the Specification is substantially fully disclosed in Specification 1,278,647, but the claims relate to a method and apparatus for plastics encapsulating an electrical assembly having a radially outwardly extending portion which contains no active components. This portion is arranged to enter an annular die cavity defined between two annular dies 65, 66, plastics material being injected through a mould runner 67 to fill the cavity and hence to seal the outer periphery of the electrical assembly. During the moulding process the central portion of the assembly containing the active components, e.g. thyristor 18, is accommodated within the hollow core 61 of the annular dies 65, 66 and therefore is subjected to no pressure.
Patent GB-871616-A (GB)
Title: Improvements in or relating to graphite
Inventor: HUTCHEON JOHN MALCOLM
IPC: C04B35/52
Filed: 1956-11-30
Abstract: High density graphite or carbon bodies of reduced permeability are produced by maintaining a temperature gradient within a preformed permeable carbon body such that a surface area is below the cracking temperature of a gaseous carbonisable compound and part of the body is above that temperature, and supplying the gaseous compound to the surface area, so that graphitic carbon is deposited in the pores of the body.  Carbonisable compounds are CH4, C2H6, C3H8, C2H2, higher aliphatic hydrocarbons, or mixtures.  The interior of a rod is heated and the surface is below the cracking temperature of the hydrocarbon which is passed into the surface, while a tube has its inner surface below the cracking temperature and the hydrocarbon is passed into the tube.  When the preformed body is carbon it may be graphitised after treatment.
Patent GB-889368-A (GB)
Title: Thixotropic oils
IPC: C09F7/00
Filed: 1959-10-29
Abstract: Thixotropic oils are produced by heating at 150 DEG -350 DEG C. a stand oil, or a fatty acid-modified drying, semi-drying, or non-drying oil, such fatty acid-modified oil having an acid number of 4-180, with 0,2-20% by weight of the oil of an aromatic or cycloaliphatic diamine in which each nitrogen atom carries at least one hydrogen atom.  It is preferred that the oil be a linseed stand oil or a fatty acid-modified linseed oil and that the diamine be a di-primary diamine, the oil being present in such amount that there is one carboxylic acid group present for each amino group in the diamine.  Particularly suitable diamines are 1:5-dimethyl-2:4-di(aminomethyl)benzene and benzidine, but several other suitable diamines are described, symmetrical diamines being preferred.  The thixotropic oils may be boiled with natural resins, e.g. modified or unmodified ester gums, copal resins, and tall oil, the compositions obtained retaining the thixotropic properties of the oil.ALSO:Thixotropic compositions are obtained by mixing thixotropic oils (produced by heating a stand oil or a fatty acidmodified drying, semi-drying, or non-drying oil having an acid number of 4-180 at 150 DEG -350 DEG C. with 0,2-20% by weight of the oil of an aromatic or cycloaliphatic diamine in which each nitrogen atom carries at least one hydrogen atom (see Group III)) with modified or unmodified alkyd resins, maleic resins, furan resins, coumarone resins, resins of formaldehyde with phenol, urea or melamine, natural or synthetic rubber, chlorinated or isomerized rubber, or with cellulose derivatives.  The compositions may contain solvents such as petroleum, white spirit, benzene, toluene, xylene, naphtha, turpentine, decalin, ethyl or butyl acetate or methyl isobutyl ketone; pigments and fillers such as zinc oxide, lithopone, titanium dioxide, oxides of lead and iron, and chromates of lead and zinc; and driers, such as the soaps of lead, cobalt, manganes, zinc, calcium and zirconium.  If desired, alkyd resins may be formed directly in the thixotropic oils by esterifying the oils at 200 DEG -280 DEG C. in the presence of polyhydric alcohols and polybasic carboxylic acids.  The reaction mixture may comprise by weight 30-70% of thixotropic oil, 20-55% of polycarboxylic acid, suitably succinic, adipic, phthalic, terephthalic or trimellitic acid or their anhydrides, or mixtures of such acids with unsaturated acids such as maleic or fumaric acids, such unsaturated acids being present in amounts of 1-12% of the other carboxylic acids, and 5-50% of such polyhydric alcohols as ethylene or diethylene glycols, glycerol, trimethylolpropane, pentaerythritol, or mixtures thereof.ALSO:Thixotropic bitumen compositions are obtained by mixing bitumen with a thixotropic oil produced by heating a stand oil or a fatty acid modified oil of acid number 4-180 at 150-350 DEG C. with 0,2-20% by weight of the oil of an aromatic or cyclo-oliphatic diamine in which each nitrogen atom carries at least one hydrogen atom (see Group III).
Patent GB-1075856-A (GB)
Title: An apparatus for forming a plurality of axially spaced beads in a hollow, substantially cylindrical sheet metal blank
Inventor: BIJVOET LEONARDUS ARNOLDUS NIC
IPC: B21D17/02
Filed: 1963-09-18
Abstract: 1,075,856. Corrugating; tube expanders. METAL CONTAINERS Ltd. Sept. 18, 1964 [Sept. 18, 1963], No. 36834/63. Headings B3E, B3J and B3Q. A method of corrugating a sheet metal cylinder (12) comprises placing the cylinder on a die unit (13, Fig. 3), including radially movable die segments (14), expanding the die unit to form a corrugation, and successively forming further corrugations whilst holding the cylinder by engaging one or more of the corrugations already formed and permitting the unformed portion of the cylinder to move towards the corrugation being formed. The die units may equal in number the corrugations to be formed, each arcuate segment (14) of a unit having a stem (18) guided in a passage (20) formed in a casing (21). The passages are staggered (Fig. 4), so that the segments may be juxtaposed. A roller (19) on the stem (18) is engaged by a core (15) movable by a fluidpressure cylinder (24) to expand the segments against the force of return springs (16) in grooves (17) in the segments. The outer surfaces of the segments are formed by rubber rings (31). The core has a cylindrical guide portion engaging the bore of casing (21) and one or, if the core is to operate in both directions, two tapered ends. Slots are formed in the core which are in axial alignment with the rollers (19), and in the slots are cams (27) adjustable by a screw-threaded conical sleeve (28). As the core moves along the cylinder, the straight portions of the cams retain three of the die units expanded to hold the cylinder as a further corrugation is formed.
Patent GB-1361459-A (GB)
Title: Electrical contact units
IPC: H01H13/48
Filed: 1971-08-05
Abstract: 1361459 Mechanical switches; electromagnetic relays; switch contacts STANDARD TELEPHONES & CABLES Ltd 3 Aug 1972 [5 Aug 1971] 36834/71 Heading H1N A contact unit comprises two electrically conductive diaphragms separated by an insulating apertured spacer 30 and capable of being brought into electrical contact within the aperture of the spacer 30, at least one of the diaphragms 10 having an annular projection forming the contact-making region at which it touches the other diaphragm when said contact is made. The diaphragms may be identical, as in Fig. 3a, or one may be domed, as 20 in Fig. 4a, to provide a retractive snap-action, or, if the radius of curvature is small, a bi-stable snap-action requiring an external restoring force. The contact unit may be hermetically sealed, in which case a glass spacer is preferred and the diaphragms are of 47% nickel, 48% iron, and 5% chromium; or the diaphragms may be of beryllium copper or phosphor bronze with polycarbonate or polyimide spacer and the diaphragms may be perforated to avoid build-up of contamnment vapours. The contact-  making regions may be gold plated. A single contact unit may be actuated by a bi-stable or retractive push-button (Fig. 6, not shown) or a plurality of contact units may be stacked for operation in tandem (Fig. 7, not shown) or for joint operation by a ladder-like actuator (80, Fig. 8, not shown). A dolly may act via an overcentre compression spring on a pivoted member (91, Fig. 9, not shown) to actuate alternate pairs of four contact units. A single-pole change-over micro-switch (Fig. 10, not shown) may be provided by two contact units mounted close to a central bead (101) on a resilient wand (102). A rotary switch wafer (Fig. 11, not shown) may be formed by arranging contact units (110) in a circle around the central boss of pivoted lever (111) for sequential actuation as the lever is rotated by a switch spindle. Electromagnetic actuation.-The relay of Fig. 12, comprises ferromagnetic alloy diaphragms 120 which, with the annular insulating spacer 121, form a bobbin for a winding 122. Two C-shaped ferromagnetic pieces 123 fitted in insulation 124 form an annular yoke and the diaphragms are plated at least on their inside surfaces to provide good contact-making properties and prevent intimate contact between the ferromagnetic material of the diaphragms.
Patent GB-1440156-A (GB)
Title: Preparation of dimethyltin dichloride
IPC: C07F7/22
Filed: 1974-08-22
Abstract: 1440156 Preparing dimethyltin dichloride CINCINNATI MILACRON CHEMICALS Inc 22 Aug 1974 36932/74 Heading C2J Dimethyltin dichloride is prepared by reacting metallic tin with methyl chloride at 150- 300‹ C. and 60-400 psig pressure in the presence of a solvent for the methyl chloride at the start of the reaction and in the presence of a catalyst of the formula where R 1 -R 4  are each -H, C 1-18  alkyl, or aralkyl, alkaryl or aryl groups; R 5  is -X or -SnX 3  where X is Cl or Br; and either both "ns" are 0 or both are 1, with the proviso that when R 1 -R 4  are all -H then R 5  is Br. The solvent may be an ether, a quaternary ammonium chloride or, particularly, dimethyltin dichloride and the process may be operated continuously. Many catalysts are specified but in the examples the following are used: Me 3 N, Et 3 N, Bu 3 N, Me 4 NCI, Bu 3 NMeSnCI 3 , NH 4 Br and Me 2 NH.
Patent GB-1390889-A (GB)
Title: Energy dissipation device
IPC: F16F7/12
Filed: 1973-08-03
Abstract: 1390889 Deformable energy-absorbing devices ROLLS ROYCE MOTORS Ltd 7 Nov 1973 [3 Aug 1973] 36995/73 Heading F2E An energy dissipation device comprises a plate of tearable material having a portion cut out to form a tongue and two lines of weakened material formed either by pressing (as defined below) or by grooving on both sides of the plate extending from the region at which the tongue is connected to the rest of the plate such that the length of the tongue may be increased by a tearing action under the action of a force applied to it; where pressing is adopted it must be such that the plane of the material between the lines is displaced relative to the plane of the plate. As shown in Figs. 3, 4, V-section grooves 2, 3, are machined in opposite sides of a mild steel plate 1 to produce a U-shaped weakened line in the plate. The closed end within the U is partly detached from the plate to form a tongue 4 which is curled back over the plate. Part of a seat belt restraint system may be attached to the tongue at 5, and the plate may be attached at holes 6, 7 to a motor vehicle; alternatively the plate 1 may be an integral part of the vehicle body. The device of Fig. 3 may be connected between the seat belt restraint system and a door pillar. Alternatively or additionally a device may be connected between the restraint system and the floor of the vehicle on one or both sides of the associated vehicle seat. The seat belt restraint system may be a lap belt or a diagonal belt or both.