baber/WOPTO huggingface dataset:
Patent GB-969807-A (GB)
Title: Improvements in or relating to two-speed gear hubs
IPC: B62M11/14
Filed: 1962-05-24
Abstract: 969,807. Change speed epicyclic gear. FICHTEL & SACHS A.G. May 24, 1962 [May 27, 1961], No. 20107/62. Heading F2D. [Also in Division B7] A two-speed, direct and overdrive, sun-ring hub, with or without back-pedal brake, comprises a driving carrier 4 combined with a chain sprocket 25, a fixed sun 13, a ring 14, and a clutch member 10 which engages a member 9 connected to output through a friction-roller or, as shown, positive ratchet one-way clutch 19 and is axially slidable for selective engagement with the carrier for direct drive and the ring for overdrive. The clutch member 10 may comprise arms engaging slots in the member 9 or, as shown, external teeth 27 and 50, hobbed, preferably simultaneously, engaging respectively internal teeth 51 in the member 9 and 30, 26 in the carrier and ring. In Fig. 1, the clutch member 10 is axially moved from overdrive to direct drive position, against a spring 31, by a chain 29 acting through a rod 15 and a block 16. Pawls 19 on a ratchet carrier 17 engage ratchet teeth 53 on a hub sleeve 7. The ratchet carrier 17 is in coarse, screw-threaded engagement with the member 9 and comprises a back-pedal brake cone 54 for engagement with a divided brake casing 56 which is slotted in a fixed bearing ring 2 and during such engagement is forced against the hub sleeve 7. Alternatively the back-pedal brake may be of the disc type and its screw actuation may be replaced by axial or radial cam actuation. A drag spring 28 is provided for the ratchet carrier 17. The back-pedal brake is operative during engagement of either gear. In Fig. 3 (not shown), dispensing with the brake, the pawls 19 are carried directly on the member 9. In Fig. 4, a back-pedal gear shift is effected by'axial shifting of the block 16 by a cam bush 22 having alternate deep and shallow facial indentations, for overdrive and direct, and external ratchet teeth engaging spring-loaded pawls arranged internally of the driving carrier 4. The back-pedal brake acts as a shift-limiting lock. In Fig. 6 (not shown), dispensing with the brake, a shift-limiting lock is provided by a pawl carrier which is screwed on the member 9, is acted on by a drag spring, and has its axial movement limited by the fixed bearing ring 2.
Patent GB-1334437-A (GB)
Title: Semiconductor nuclear radiation detectors
IPC: H01L31/117
Filed: 1971-04-19
Abstract: 1334437 Semi-conductor radiation detectors PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 April 1971 [26 Jan 1970] 20259/71 Heading H1K Both faces of a PIN nuclear radiation detector are recessed through to the intermediate intrinsic region 3, the recesses 4, 6 being aligned so that when a number of such detectors are stacked the radiation F can pass from detector to detector with minimum non-useful absorption. The intrinsic region 3 may be formed by drifting Li from an N type region 2 diffused into an original P type wafer. The recesses 4, 6, which may be cylindrical or parallelepipedal, are formed by grinding and etching and contacts to the P and N type regions 1, 2 are made on their recessed faces or on their lateral surfaces.
Patent GB-276142-A (GB)
Title: Improvements in or relating to reducing valves
IPC: G05D16/10
Filed: 1926-08-17
Abstract: 276,142. Dewrance, Sir J. Aug. 17, 1926. Pressure regulating valves.-A pressure regulating valve of the kind controlled by an auxiliary valve has the main valve actuated by a piston working in a cylinder suspended from the valve casing. The piston p which is exposed on its outer face to atmosphere works in a U-leather packing h' and is coupled to the main valve k by a two part spindle l. The spindle passes loosely through a hole in a partition m in the cylinder which is normally maintained full of water so that the movements of the piston are damped by liquid passing through the narrow space between the spindle and the edge of the hole in the partition. Specification 270,381 is referred to.
Patent GB-1420733-A (GB)
Title: Process for the nitration of halogenated aromatic compounds
IPC: C07C205/12
Filed: 1974-05-08
Abstract: 1420733 Nitration of halogenated aromatic compounds MONSANTO CO 8 May 1974 [9 May 1973] 20302/74 Heading C2C Nitro- and halo-substituted aromatic compounds are prepared by reacting a halogenated aromatic compound with a nitrating agent in the presence of a phosphorus compound. Specified phosphorus compounds are phosphoric acids, phosphorus oxides, phosphorus halides, phosphorous acids, and organo-phosphorus compounds. The examples describe the preparation of o- and p-nitro-chlorobenzene.
Patent GB-1305774-A (GB)
IPC: F16K31/06
Filed: 1970-04-28
Abstract: 1305774 Valves G L LANG 28 April 1970 [4 June 1969] 20316/70 Heading F2V [Also in Division H1] An A.C. solenoid valve (Fig. 1) comprises a cylindrical armature biased by underlying spring 2 engaging ring 7 and shoulder 11 and slidable in ferromagnetic housing 3, a projecting coned valve stem 4 engaging fluid orifice 6 when closed on de-energization; the armature surface being then separated from inner surface of housing 3 so that on energization the armature rises and opens the valve. The body is of plastic or metal with inlet and outlet pipe fittings 14, 22, and inlet strainer 15. Housing 3 is flanged for sealing contact with elastic ring 20 by pressure plate 19 screwed down. The valve seat 25 is of elastomeric material in a recess 26 of body 9 coaxial with the outlet duct and its bore controls the required flow. A solenoid winding 27 on spool 28 is coaxially fitted over housing 3 and encloses polepiece 30 attached to magnetic steel shell 31 surrounding the coil and fitting over housing 3 to complete the magnetic circuit. The armature enclosure exerts a damping effect on fluid therein controlled by the clearance around the armature, by providing leakage grooves, or axial fluid passages. In a modification (Figs. 2 and 3, not shown) the polepiece comprises a low hysteresis longitudinally slotted sleeve surrounding a mild steel inner cylinder partially relieved in diameter to provide a peripheral gap to give phase retardation and splitting of the magnetic flux.
Patent GB-982918-A (GB)
Title: A process for the production of graft polymers
IPC: C08G4/00
Filed: 1963-05-22
Abstract: Graft polymers are made by polymerizing at least one vinyl and/or vinylidene compound (capable of free radical polymerization) in the presence of a polyacetal of the general formula <FORM:0982918/C3/1> in which the segment -[CH2-CH2-O]n-may be partially replaced by one or more other segments, each of which can be derived from a polyhydric alcohol molecule by removal of a molecule of water therefrom, and in which R1 is a hydrogen atom, or an alkyl or acyl radical, R2 is a hydrogen atom or a short-chained alkyl radical, n is 1, 2 or 3 and m is an integer and has a value of at least 8.  General formulae of suitable types of replacement segments are given. Polyacetals exemplified are diethylene glycol-formaldehyde polyacetals and triethylene glycol-formaldehyde polyacetals of a number of different molecular weights, and a polyacetal of formaldehyde and triethylene glycol containing incorporated -O-CH2-NH-CO-NH-CH2-O-groupings.  Many suitable vinyl and vinylidene monomers are listed and include aliphatic and aromatic monocarboxylic esters of vinyl alcohol, acrylic and methacrylic acids and esters, vinyl and vinylidene halide compounds, nitriles and amides of vinyl compounds, and aliphatic and aromatic vinyl hydrocarbons. Those exemplified are: vinyl acetate, propionate and butyrate and ethyl acrylate.  Vinyl esters are preferred and 3 to 95%, advantageously 30 to 70%, of a vinyl ester, calculated on the total reaction mixture, are introduced. Catalysts exemplified are benzoyl peroxide, dicumyl peroxide and cyclohexyl peroxydicarbonate. The polymerization is preferably effected in bulk, but may also be effected in solution or in aqueous emulsion using conventional emulsifiers.  For solution polymerization, of a number of solvents listed, tert.-butanol is exemplified.  The graft polymer formed is mixed with a solution of triphenyl methane triisocyanate in methylene chloride, cast into a film and cross-linked by heating at 100 DEG C. for 2 hours.
Patent GB-441685-A (GB)
Title: Improvements in flushing and like apparatus
IPC: E03D3/12
Filed: 1934-07-12
Abstract: 441,685. Slow-closing valves. STONE & CO., Ltd., J., Deptford, and ELDER, D., 49, Russell Square, both in London. July 12, 1934, No. 20477. [Class 135] A flushing valve of the kind having two main valves in series one of which is normally closed and controlled by a dashpot while the other is normally open but moved to its closed position when operated to move the first valve to its open position, has the internal parts so arranged and proportioned that they can be assembled or withdrawn through the inlet or outlet ports. In the form shown in the Figure an inner ported cylinder b of two diameters is mounted axially in the main casing. A piston e working in the larger cylinder carries a valve face e<5> and is loaded by a spring f. Working in the smaller cylinder is a ported tubular valve member h with a closed end and carrying a depending rack h<1> engaging a mutilated pinion h<2> connected to the operating handle i. When the handle is depressed the member h is raised and its closed end blocks the passageway at the same time its upper end moves the piston e to its upper position, water escaping from above the piston through apertures e<2> controlled by a non- return valve e<3>. When the handle is returned to its normal position a through way is established until such time as the spring f moves the piston e to obturate the ports d and engage the seating e<1>. The escape ports may be in the end of the cylinder. An adjustable stop co-operates with a flat on the pinion spindle to limit its movement. In a modification the member h works in a cylindrical bore in the casing while the cylinder for the piston e is supported by a ported partition clamped in the inlet.
Patent GB-1216007-A (GB)
Title: Improvements in or relating to refractory bricks
Inventor: DUFFY JOHN GEORGE
IPC: F23M5/02
Filed: 1968-05-01
Abstract: 1,216,007. Refractory bricks. WEST HUNWICK REFRACTORIES Ltd. 29 April, 1969 [1 May, 1968], No. 20587/68. Addition to 1,131,123. Heading F4B. A refractory brick as described in parent Specification is modified in that insert has at least two links 10 interconnected by a supplementary member 8 extending between and secured to said links. The strips 8 can be of smaller width than the links 2 (see Fig. 2, not shown).
Patent GB-1022993-A (GB)
Title: Improvements relating to display devices
Inventor: HERSCH WOLFGANG
IPC: G01S7/26
Filed: 1961-06-07
Abstract: A radar display device comprises a three-dimensional array of electroluminescent elements with means for selectively exciting these elements in response to radar return signals. Such a device is particularly useful in displaying radar information derived for air traffic control purposes.  The device is preferably constructed in the form of a stack of electroluminescent panels. These are built up from sheets of glass upon which are deposited trasparent row conductors of stannic oxide, followed by a transparent layer of zinc sulphide activated by manganese to provide the electroluminescent phosphor, and finally transparent column conductors of stannic oxide at right-angles to the row conductors. The conductors should have a thickness of one-quarter wavelength of the light emitted by the phosphor so as to reduce reflections from the interfaces.  The rows and columns of the three-dimensional display device are activated by a drive circuit D operating through selectors Rs and Cs which are activated in response to radar signals.  An aircraft is represented as a luminous spot which appears at the intersection of the two selected wires. The phosphors have reasonably long persistence so that more than one radar echo at a time may be displayed.
Patent GB-354519-A (GB)
Title: Improvements in or relating to endless conveyors
IPC: B65G69/16
Filed: 1930-07-08
Abstract: 354,519. Endless belt conveyers. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and MARSHALL, C. H., of Fraser & Chalmers Engineering Works, Erith, Kent. July 8, 1930, No. 20645. [Class 78 (i).] In conveyers for lowering material of the kind comprising a pair of parallel endless belts 4, the belts run between side members 14 which serve to retain the material. The tail pulley 5 of each belt is mounted between the ends of a pair of bell cranks 6, the other ends of which are so biased by tension springs 7 that the belt faces are urged towards each other. Each pulley is formed with a right- and left-hand screw for conveying material outwards. Transverse slats 13 are mounted on the belts. The framework 1 is pivoted about the axis 3 of the driving pulley 2, and may be made in two parts pivoted together.
Patent GB-717012-A (GB)
Title: Improvements in or relating to desulfurization of petroleum fractions
IPC: B01J23/22
Filed: 1952-08-18
Abstract: Petroleum fractions are desulphurized by reacting in the vapour phase at 600-1100, preferably 750-950 DEG  F., a mixture thereof with one or more naphthenes containing a cyclohexane ring, in the presence of a catalyst consisting of vanadium pentoxide on alumina and in the absence of extraneous hydrogen.  Sulphur is converted to a sulphide, usually H2S, which is easily separable and the naphthenes to aromatic hydrocarbons which may be recovered from the products.  Pressure may be up to 200 p.s.i.g., feed rate 0.3-5 liquid vols./vol./hour and contact time 0.1-1 sec. Excess of naphthenes is advantageous and extraneous naphthenes are added to supplement those in the feed if necessary.  Batch or continuous operation with fixed, moving or fluidized catalyst may be used.  Reactants may be re-cycled with fresh feed or naphthenes or diluents such as non-condensible gaseous products.  The catalyst (see Group III) preferably contains 5-20 per cent V2O5 and is prepared by impregnating dry alumina gel in one or more stages with ammonium meta vanadate and heating. Examples compare the activities of catalysts containing 10 per cent V2O5 on dry and hydrous alumina gel and other catalysts in removing sulphur from methylcyclohexane containing thiophene and illustrate the desulphurization of heavy naphtha and kerosene containing thiophene.ALSO:Petroleum fractions are desulphurized by reacting in the vapour phase at 600-1100, preferably 750-950 DEG F., a mixture thereof with one or more naphthenes containing a cyclohexane ring, in the presence of a catalyst consisting of vanadium pentoxide on alumina and in the absence of extraneous hydrogen.  Sulphur is converted to a sulphide, usually H.S. which is easily separable, and the naphthenes to aromatic hydrocarbons.  Pressure may be up to 200 p.s.i.g. feed rate 0.3-5 liquid vols./vol./hr., and contact time 0.1-1 sec.  Excess of naphthenes is advantageous, and extraneous naphthenes are added to supplement those in the feed if necessary. Batch or continuous operation with fixed, moving or fluidized catalyst may be used.  Reactants may be recycled with fresh feed or naphthenes or diluents such as non-condensible gaseous products. Aromatic hydrocarbons may be recovered from the products.  The catalyst preferably contains 5-20 per cent. V7O5 and is prepared by impregnating dry alumina gel in one or more stages with ammonium metavanadate and heating.  It may be activated by heating at 850 DEG F.  The alumina may be prepared by precipitation from aluminium salt solutions, and advantageously by hydrolyses of aluminium amylate and drying after addition of acetic acid.  Examples compare the activities of catalysts containing 10 per cent. V2O3 on dry and hydrous alumina gel, and other catalysts in removing sulphur from methylcyclohexane containing thiophene and illustrate the desulphurization of heavy naphta and kerosene containing thiophene. Temperature is 800 DEG F., pressure 200 p.s.i.g., and feed rate 0.5 vols./vol./hr.
Patent GB-819839-A (GB)
Title: Improvements in or relating to degreasing of metals
IPC: C23G5/028
Filed: 1957-07-02
Abstract: A process for degreasing metal comprises exposing the metal to vapour derived from a composition containing (a) a volatile chlorinated hydrocarbon having up to 3 carbon atoms in the molecule, for example perchlorethylene or methylene chloride, but particularly trichlorethylene; and (b) a lesser amount, preferably 0.5-20 per cent by volume of the mixture, of a monoalkyl ether of a glycol or polyglycol, especially 2 - methoxy-, 2 - ethoxy-, or 2 - butoxy-ethanol, or diethylene glycol monobutyl ether.  Specification 498,517 is referred to.
Patent GB-597641-A (GB)
Title: Improvements in or relating to stud and socket joints
IPC: F16C11/08
Filed: 1944-10-26
Abstract: 597,641. Pivots. THOMPSON PRODUCTS, Inc. Oct. 26, 1944, No. 20866. Convention date, Oct. 30, 1943. [Class 65 (ii)] [Also in Group XXVI] Sealing means for a stud and socket joint between two members 11, 19, e.g. of a car tierod assembly, comprises a flexible element 26 secured at one end 28 to one member and having a ferrule 29 secured to its other end in sliding contact with the other member. A .washer 38 may be introduced between the ferrule and member 19 to reduce friction between the members. Bearing pressure is provided by a spring 36. The end 28 of the flexible element may be inserted in a groove in member 11 or clamped thereto by a metal bush loaded by the spring 36.
Patent GB-431236-A (GB)
Title: Improved means for attaching initial letters or designs to purses, hand-bags, gloves and other personal belongings
IPC: G09F3/06
Filed: 1934-07-17
Abstract: 431,236. Ornamenting. BARTON, A. E., 9, Ingestre Road, Hall Green, Birmingham. July 17, 1934, No. 20876. [Class 93] [See also Groups VII, XVII, and XXV] An attachment for purses, handbags, gloves, &c. comprises a one-piece cap made of celluloid, synthetic resin, or other non- metallic material and carrying an initial, design, or identification mark, the cap being surrounded by a flange or rim adapted to be sprung over the edge of a button or like member on the article. A cap 1 made of coloured celluloid and bearing an initial 2 is formed with an inturned flange provided with semicircular notches 7 dividing the flange into three equal resilient segments 8 whereby the cap may be sprung over a metal button 3 forming part of an eyelet 6 attached to the closure flap 4 of a purse. The cap is made by pressing a circular blank in a heated mould, grooves to form the initial 2 and a circle 9 being formed at the same time and being subsequently filled with coloured enamel. Alternatively, the initial may be raised up from the cap, printed thereon, or cut out thereof. Slits may be formed in place of notches, or, in a modification, the cap may be made of thin material so as to spring over the button without the aid of notches or slits. Specification 354,470 is referred to.
Patent GB-812052-A (GB)
Title: Improvements in or relating to curtain valance rails and brackets therefor
Inventor: WOOD WILLIAM
IPC: A47H1/142
Filed: 1954-07-17
Abstract: 812,052. Suspending curtains. FRENCH & SONS Ltd., T. July 15, 1955 [July 17, 1954], No. 20880/54. Class 52(5) A valance support comprises a rail having radiused edges a merging into waisted sides b and brackets each having a rail engaging part of folded, springy U- shape formed to grip the sides of the rail by indentation to form a projection or rib or by shaping the basket in conformity with the shape of the rail. In a modification the rail is not symmetrical in crosssection.
Patent GB-1485559-A (GB)
Title: Apparatus having flat semi-permeable membranes
IPC: B01J/
Filed: 1975-05-16
Abstract: 1485559 Membrane apparatus RHONEPOULENC INDUSTRIES 16 May 1975 [16 May 1974 1 April 1975] 20900/75 Headings BIL and B1X Fluid treatment apparatus comprises a lower plate (not shown), at least two side plates (5, 6, 7, 8) connected to the lower plate to permit movement of the side plates with respect to the lower plate, a stack of membranes and spaces (not shown) arranged on and parallel to the lower plate, an upper plate 3 with cooperating locking means for upper and side plates (11-14, 15-18) which lock them and compress the stack against the lower plate so that the membrane and spaces are compressed together a predetermined compressed thickness against the lower plate. The apparatus may be used for the exchange or separation of gaseous or liquid fluids. e.g. dialysis or oxygenation of blood.
Patent GB-222624-A (GB)
Title: Manufacture of sulphurised dyestuffs and intermediate products therefor
IPC: C09B49/10
Filed: 1923-08-17
Abstract: 1-Aralkylamino- or 1-dialkylamino-4-p1-oxyaryl-naphthylamine sulphonic acids are obtained by treating with sulphites the indophenols derived from 1-aralkyl- or 1-dialkyl-naphthylamines and p-aminophenols; in examples, the indophenols from benzyl-a -naphthylamine and quinone chlorimide, or dimethyl-a -naphthylamine and p-aminophenol, are treated with sodium bisulphite.  Sulphuretted dyes, dyeing cotton green shades fast to soap, are obtained by heating the above-described sulphonic acids, or their alkali salts, with alkali polysulphides in the presence of copper.
Patent GB-608043-A (GB)
Title: Road roller
IPC: E01C19/28
Filed: 1945-08-14
Abstract: 608,043. Road rollers. PEDERSHAAB MASKINFABRIK AKTIESELSKABET. Aug. 14, 1945, Nos. 20932 and 20933. Convention dates, Dec. 14, 1943 and July 15, 1944. [Class 6(i)] In a road roller having at least one vibration roller, and provided with vibrating mechanism. and at least one roller for existing continuous rolling pressure on the surface to be rolled the vibration roller is so mounted that it vibrates independently in relation to the road roller framing. As shown applied to a motor driven roller, a roller 10 is freely mounted on a shaft 15 having an eccentrically placed centrifugal mass driven by a pulley 17 and belting from the motor 8. The roller 10 is mounted by journal bearings 19 on springs 12, which prevent the transmission of vibration to the roller frame, and are fitted in a box 13 which may be adjustable to vary the position of the roller 10. In a modification the springs may comprise air cushions or rubber tubes and may be mounted directly on the road roller framing. The roller 10 may be journalled eccentrically on a shaft having an eccentrically placed centrifugal mass so that the roller assembly is dynamically balanced. In this case the shaft may be fitted directly on the road roller frame or one side may be fixed and the other provided with a resilient connection such as a rubber body secured to the road roller frame or to a frame hinged to the latter. In another modification a wheel is mounted by ball bearings to a disc fitted on each side of the road roller frame, the said wheel having a pneumatic tyre which bears on the inside of the roller 10 thus providing a resilient attachment to the road roller frame, the shaft 15 having no direct connection to said framework. The vibration roller may be applied to any existing roller and more than one may be fitted. In existing rollers having three rollers one of the said rollers may be converted by incorporating the vibrator mechanism. The Specification as open to inspection under Sect. 91 describes also a construction in which the vibrating roller is carried by a frame pivoted at one end to the main frame. The free end of the pivoted frame may, when desired, be held by a latch when 'the machine is in operation. The pivoted frame is connected by a cord to an instrument which records unevennesses of the road bed, the latch being disengaged when such recordings are taken. This subject-matter does not appear in the Specification as accepted.