baber/WOPTO huggingface dataset:
Patent GB-1011292-A (GB)
Title: Improvements in and relating to sealing plugs
IPC: B65D59/02
Filed: 1963-08-13
Abstract: 1,011,292. Tube sealing plug; bottles, stoppers &c. MUELLER BRASS. Aug. 13, 1963 [Aug. 14, 1962], No. 31976/63. Headings B8C and B8T. A sealing plug for closing the end of a tube has an elongated body of a resilient deformable material with one end formed with a convex surface projecting outwardly and longitudinally of the body and having extending around the periphery of the body between the ends sealing means adapted to frictionally engage the inner surface of the tube. The plug 10 has a cylindrical body portion preferably tapering slightly, the smaller end having a conical wall 14. Grooves 20 are provided to form sealing ribs 22. The plug may be of rubber or vinyl based plastics materials. The wall 14 increases the radial bearing pressure of the ribs 22 and forward end of the body portion 12 against the tube bore when pressure is exerted against the end wall causing it to deflect inwardly. The plug may be used to seal the ends of tubes which have been cleaned and filled under pressure with inert gas to prevent the tubes from becoming contaminated. Specification 1,011,293 is referred to.
Patent GB-1156345-A (GB)
Title: A Multiple Electrical Contact Assembly for Compression Bonded Semiconductor Devices
IPC: H01L21/52
Filed: 1967-07-12
Abstract: 1,156,345. Semi-conductor device. WESTINGHOUSE ELECTRIC CORP. 12 July, 1967 [26 July, 1966], No. 31991/67. Heading H1K. A support 82 of Cu, brass, Ag, A1 or alloys thereof has a layer 122 of Au, Ag, Sn, In, Pb or A1 formed thereon by electrodeposition. Alternatively or additionally to the deposited layer a preformed malleable disc may be used. A contact layer 108 of Mo, Ta, W or alloys thereof is joined to a semi-conductor wafer 106 of Si, Ge, SiC, A<SP>III</SP>B<SP>V</SP> or A<SP>II</SP>B<SP>VI</SP> compounds by a solder layer 120 or a malleable disc. The wafer 106 has regions 107 and 109 of one conductivity type and region 105 of the opposite conductivity type. The regions 107 are engaged by annular contacts 115, and 117 and a circular contact 119 whilst the exposed portions of region 105 are engaged by annular contacts 121 and 123. The surfaces of the contacts and the electrode assembly 60 may be plated with Au, Ag, Sn or alloys thereof. The contact assembly 60 to which Cu conductors 52 and 54 are joined by casting, brazing or soldering is made of two interlocking pieces 10 and 30 (Figs. 1 and 3, and 2 and 4, not shown), which are insulated from each other by shellac or silicone varnish 68 but mechanically joined by epoxy resin 70. The pieces 10 and 30 may be made of Mo, W, Ta, Cu, or Fe-Co-Ni-Mn alloy. An insulating washer 62 of ceramic, mica, glass, quartz or fluorocarbon and a steel thrust washer 64 and a steel spring washer 66 are provided. The semi-conductor wafer may be surrounded by a sleeve (124) of molecular sieve and encapsulated in an iron cylinder (94) sealed by an insulating cap (134). A thrust washer (126) and a retaining ring (128) are provided for cooperation with the spring washers (66 and 67) (Fig. 7, not shown).
Patent GB-604579-A (GB)
Title: Production of polyhaloacyl halides
IPC: C07C51/58
Filed: 1945-11-28
Abstract: Polyhalogenated, straight - chain aliphatic carboxylic acid halides are produced by heating at a temperature of 50 DEG  C. to 250 DEG  C. and under superatmospheric pressure a substantially anhydrous mixture of carbon monoxide and a polyhalogenated ethane containing from 3 to 5 halogen atoms in the presence of a Friedel-Crafts catalyst which is a halide of a polyvalent inorganic element, e.g. aluminium-chloride, bromide, or fluoride; ferric chloride, zinc chloride, titanium chloride and boron trifluoride.  It is preferable to employ a polychlorinated ethane containing from 3 to 5 chlorine atoms and to employ reaction temperatures of between 70 DEG  C. and 200 DEG  C. and a pressure range of 50 to 1000 atmospheres.  In examples: (1) carbon monoxide is added to a mixture of pentachloroethane and anhydrous aluminium chloride in a pressure vessel which is then heated, additional carbon monoxide being added to maintain a pressure of 950 atmospheres.  The vessel is then cooled, the pressure slowly released and the volatile materials removed from the catalyst under reduced pressure. Fractionation of the product yields tetrachloropropionyl chloride with some tetrachloroethylene; (2) and (3) beta-trichloroethane and symmetrical tetra-chloroethane respectively are reacted with carbon monoxide in the presence of aluminium chloride as in (1) dichloropropionyl chloride and dichloroacrylyl chloride being respectively obtained.  A small amount of trichloropropionyl chloride is also obtained in (3).  The analogous fluoro- and bromo-ethanes may also be employed.  The products are readily convertible to the corresponding acids and other simple derivatives which are useful as pesticides, rubber chemicals, dye intermediates, medicinals and as speciality acids in the leather, metal and electroplating industries.
Patent GB-1382508-A (GB)
Title: Control valves
IPC: F15B13/04
Filed: 1972-07-10
Abstract: 1382508 Valves COMMERCIAL SHEARING Inc 10 July 1972 [24 Sept 1971] 32120/72 Heading F2V A pressure-compensated directional control valve has a directional control valve 10 comprising a valve member 12 which selectively connects work ports 15, 16 with inlet ports 17, 18 or exhaust ports 13, 14 and a pressure compensating port 33 which communicates via grooves 22b, 23b in the valve member and grooves 30, 31, 32 in the body with the valve member chamber 19, 20 that is connected to inlet fluid pressure, and a pressure compensating valve 40 comprising a hollow valve member 50 which controls flow from a fluid pressure inlet 100 to exhaust 44 according to the pressure differential thereacross which pressure differential is determined by inlet fluid pressure acting in one direction and fluid pressure from compensating port 33 acting in the opposite direction together with spring 51 in the end chamber communicating with the compensating port 33 via passage 56 in the valve member. If a plurality of directional control valves are used with the pressure compensating valve the latter will compensate the control valve working at the highest pressure, fluid pressure in passage 36 acting with balls 24, 25 to cut off communication of the other valves with the compensating valve. Reference has been directed by the Comptroller to Specification 1,293,550.
Patent GB-1394899-A (GB)
Title: Joining device for mitred elongate hollow members
IPC: E06B3/98
Filed: 1972-07-10
Abstract: 1394899 Frame joints M ARND 10 July 1972 [27 July 1971] 32142/72 Heading E1J [Also in Division F2] A joining device comprises an angle member with limbs insertable in respective hollow members 1, 2 with hinged locking means 4, 5, 17 having respective ends bearing against a limb and an end of an aperture in the hollow member. The locking members 4, 5 have a bead 7 engaging in groove 6 of angle member 3 and an abutment 9 engaging hollow member 1 and are separated by cylindrical pin 17. Alternatively pin 17 is replaced by a bead (27, Fig. 3) or beak (37, Fig. 4). Members 1, 2 are of metal, angle member 3 is of metal or plastics.
Patent GB-1441916-A (GB)
Title: Assmembly for location in a structural opening more particulary  a supplementary glazing arrangement
IPC: E06B3/28
Filed: 1972-07-10
Abstract: 1441916 Glazing R W GROOM 6 July 1973 [10 July 1972] 32217/72 Addition to 1268751 Heading E1R The assembly of Specification 1268751 is modified by provision of a corner block 2 with recesses 25 receiving the ends of frame members which are secured by screws 28 passing through holes 26 in the block into longitudinal holes (24) in the members. The block has grooves 27 with inclined base surfaces to receive an extension of a sealing strip 11 which extends along the frame members. Strip 11 is held by a member (9) which is outwardly movable from the frame to press strip 11 against a surface of an aperture. Support members 29 prevent excessive compression of strip 11.
Patent GB-1492072-A (GB)
Title: Single document transport apparatus
Inventor: HICKEY RICHARD C
IPC: B65H29/62
Filed: 1975-08-01
Abstract: 1492072 Preventing double sheet feed DOCUTEL CORP 1 Aug 1975 [2 Aug 1974] 32256/75 Heading B8R Separated sheets are fed through a nip roller pair, one roller 38 of which is driven, and the other 40 of which is normally freely rotatable. However, if a photoelectric sensor 74 detects double sheet feed, the roller 40 is clutched into reverse drive causing return of one sheet to its pile. Sheets are supported in two side by side piles 10 on a common elevator platform 12 and are separated selectively by respective suction cups 22 moved upwardly and forwardly by a roller 30 and slot 33 arrangement. Separated sheets are fed via the rollers 38, 40 and nip belts 44, 46 to a tray 52. Additional photoelectric sensors 76, 78 are spaced apart a distance greater than the length of a single sheet and cause a switch gate 66 to be pivoted to the dotted line position if sheets are sensed simultaneously at each. Such sheets are thus diverted to a tray 67. A sensor 80 also senses double sheet feed and actuates the gate 66. Suction to the cups is cut off when they reach the top of the slot 33. A leading sheet edge at sensor 76 stops drive to the roller 38, whilst a trailing edge causes return movement of the suction cups to engage the pile. A trailing sheet edge sensed at 78 returns all the other driving means to rest condition.
Patent GB-697222-A (GB)
Title: Improvements relating to the desulphurisation of hydrocarbons
IPC: C10G67/04
Filed: 1948-12-14
Abstract: An aromatic extract is passed in vapour form in admixture with hydrogen produced in the process over a dehydrogenation-desulphurization catalyst at a temperature and pressure sufficient to effect the conversion of a considerable proportion of the sulphur in the extract into hydrogen sulphide and to produce a hydrogen-rich gas mixture, which is separated from the treated extract and recycled to the reaction zone at a rate sufficient to maintain the necessary partial pressure of hydrogen therein.  The treatment is carried out between 700 DEG  and 800 DEG F and at a pressure of 50-250 lb./sq. in.  The space velocity should not be above 10 v/v/hr.  Suitable catalysts are the oxides and sulphides of metals of the 6th Group of the Periodic classification, either alone, mixed, in combination or mixed with or supported on a porous support such as natural or processed bauxite, activated alumina or kieselguhr.  The preferred catalyst is cobalt molybdate supported on alumina.  The pressure during the treatment may be set at a predetermined level, excess gas being withdrawn from the system, or it may be allowed to rise to an equilibrium pressure at which the hydrogen evolved equals the hydrogen consumed.  If desired, the catalyst may be activated by treatment with hydrogen sulphide or a hydrogen sulphide-containing gas prior to its use in the process.  In an example an SO2-extract having a sulphur content of 0.69 per cent weight was passed at 2v/v/hr. at 780 DEG F and 100 lb./sq. in. pressure over a cobalt molybdate catalyst supported on alumina. The process was continued for 100 hours, during which time the gas make was 15 cu. ft./bbl.  This gas contained 80 per cent of hydrogen and was recycled to the reaction zone at 2,000 cu. ft./bbl.  The product contained 0.05 per cent of sulphur. Specifications 654,152, 663,038, 669,536, 669,552, 669,553, 697,083 and 697,227 are referred to.
Patent GB-629809-A (GB)
Title: Improvements relating to liquid injection nozzles
IPC: F23D11/38
Filed: 1947-12-09
Abstract: 629,809. Liquid-fuel burners. LUCAS, Ltd., J., and MARLOW, F. J. Dec. 9, 1947, No. 32428. [Class 75 (i)] [Also in Group XXIX] A fuel injection nozzle comprised of a body part b, and an end part d, held together by a cap n, is characterized by the formation of an annular chamber c between the end and body parts. A disc i is loosely located between the two parts and is pressed against the inner surface of the end part. Tangential passages formed in the end part lead from the annular passage into the swirl chamber e and outlet nozzle f. The disc i is centred in the chamber by projections in the form of a spider.
Patent GB-1293628-A (GB)
Title: Grinding machine
Inventor: GOLUBEV NIKOLAI EVGENIEVICH
IPC: B24B3/12
Filed: 1970-07-03
Abstract: 1293628 Grinding VITEBSKOE PETSIALNOE KONSTRUKTORSKOE BJURO ZUBOO - BRABATYVAJUSCHIKH SHLIFOVALNYKH I ZATOCHNYKH STANKOV 3 July 1970 32437/70 Heading B3D A machine for grinding a worm hob 4, comprises a piston fixed rigidly to the frame of the machine and a cylinder 9 slidable on the piston and in guides 11, the cylinder being formed with a rack engaging a gear 13 on a shaft 2 connected to a differential mechanism A having a device 45 for effecting circular feed of the workpiece and a device 40 for taking up play in the kinematic chains of the machine. The shaft 2, on one hand, is secured to a gear 26 co-operating with a rack 27 for effecting reciprocation of a carriage 5 for a grinding head 6, and, on the other hand, is connected by a clutch 14 to the input shaft 15 of the differential mechanism A. The latter is carried by supports 16 in a housing 17 which also includes the guides 11 for the cylinder and bearings for the shaft 2. The mechanism A has gears 30 ... 33, connected to gearing 34, 35, bevel gears 36, 37, change speed gears 20 ... 24, indexing mechanism C and spindle 3 to which the hob is secured. After each to-and-fro movement of the carriage 5 carrying the grinding head effected by reciprocation of the cylinder 9, a circular feed is imparted to the hob by operation of a step-by-step motor 45 connected to a worm 42 meshing with a worm gear 43 on housing 44 for the differential gears 30 ... 33. Play in the gearing is taken up by a piston 41 in a cylinder 40 acting on the worm 42.
Patent GB-927963-A (GB)
Title: Method of preventing water-soluble films of polyvinyl alcohol derivatives from adhering and non-sticky films made thereby
IPC: C08K5/092
Filed: 1961-09-11
Abstract: Water-soluble films having no tendency to adhere to one another are made from a composition comprising a water-soluble polyvinyl alcohol derivative and not more than 30% by weight, based on the weight of the derivative, of an aliphatic dicarboxylic acid, the solubility of which acid is less than 3,0% at 20 DEG C. and more than 0,3% at 100 DEG C.  The films are made from a solution of the polyvinyl alcohol derivative dissolved in water or a mixture of water and organic solvent, to which the acid is added.  Desirably, from 0,5-20% of the acid is used, and the films may be formed by drum-casting or by extrusion.  On standing, the aliphatic dicarboxylic acid precipitates as micro-crystals on the surface of the film.  Precipitation may be promoted by repeated moistening and drying of the film, heating the film, providing a matte surface on the film, or by adding a hydrophilic plasticizer to the composition.  Specified polyvinyl alcohol derivatives are partially saponified polyvinyl alcohol (i.e. still containing some acetate groups), formalized, acetalized, urethanized, oxyethylated, cyanoethylated and sulfanilacetalized polyvinyl alcohol.  Dicarboxylic acids specified include fumaric, adipic, azelaic and sebacic acids.
Patent GB-506396-A (GB)
Title: Improvements in and relating to fluid flowmeters
IPC: G01F1/26
Filed: 1937-11-25
Abstract: 506,396. Flow meters; valves; fluid - pressure gauges. COXETER & SON, Ltd., and WELLESLEY, G. Nov. 25, 1937, No. 32558. [Classes 69 (i) and 135] [Also in Group XIX] A flow meter comprises a diaphragm 15 which is operated on by the fluid and connected to a tapered valve 17 controlling the fluid outlet port, and is associated with indicating means operated by the movements of the diaphragm and valve. In the meter shown, the pressure on the outlet side of the valve 17 is transmitted through apertures 18a to the upper side of the diaphragm, the under face being subjected to the pressure above the. valve. A safety valve may be provided at 18 on the inlet connection which prevents too great a pressure-difference being applied to the diaphragm. The diaphragm movements are transmitted to the indicator needle 29 by way of a rock-shaft 22 and pivoted arm 24 carrying a quadrant 25 engaging a gear 27 on the spindle of the needle. In a modification, the valve 17 is moved horizontally through a bell-crank linkage and controls an outlet in the side of the casing. In the form shown in Fig. 3, the diaphragm movements are indicated by the height of a liquid in a tube 34 extending from a closed liquid space above the diaphragm. To avoid too great a height of tube it may widen upwardly, or be coiled. A connection (not shown) is made from the outlet to the space above the diaphragm so that the effect of variations of outlet pressure may bo compensated. The Provisional Specification refers to a modified form of apparatus in which the fluid displaces mercury in a U-tube secured to the boss of a pointer, causing the U-tube to rock and actuate the pointer and at the same time to operate the inlet valve, to which it is coupled.
Patent GB-1514209-A (GB)
Title: Rotating magnetic memories
IPC: H03L7/093
Filed: 1975-08-04
Abstract: 1514209 Sectoring a rotating magnetic memory PERTEC CORP 4 Aug 1975 [6 Sept 1974] 32577/75 Heading G4C Apparatus for electronically dividing each revolution of a rotating magnetic memory 10 into a whole number (M in the figure) of equal time duration sectors comprises means 11 mechanically connectible to the memory to rotate in unison therewith, the means 11 being divided into a number of sectors by equally spaced sector marks, means 13, 14 detecting the sector marks and generating a pulse train at a frequency representative of the rate of rotation of the memory, a phase-locked loop connected to receive the pulse train and arranged to produce an output signal at an integer multiple (2N in the figure) of that of the pulse train, the loop being stabilized in phase and frequency by comparing at 15 the pulse train with a feedback signal produced by dividing at 17, 18 the frequency of the output signal by the integer multiple, and digital means 24 dividing the frequency of the output signal by a predetermined integer (K in the figure) to produce timing signals, the number of the timing signals produced per revolution of the memory being equal to the whole number of equal time duration sectors. The whole number M of equal time duration sectors is given by M = Nn/K, where n is the number of sector marks on means 11; consequently the value of M may be varied by altering the values of N and/or K, n being fixed. Such alteration is achieved by programming the components 17, 24 which may be digital counters. The means 11 may be a slotted ferromagnetic disc in which case component 13 is a magnetic sensor, or may be a slotted opaque disc, component 13 then being a photoelectric sensor. An index mark 25, as shown midway between two sector marks on the means 11, may be used in conjunction with an index mark detector 26 to synchronize the digital means 24 so that for each revolution of the memory the division into sectors begins at the same radial line of the memory. Index mark 25 may alternatively be a hole or slot loacted on means 11 at a different radius to the sector marks, or such a hole or slot may be located on a disc separate from means 11. Fourth order low pass filtering of the output signal of the phase-locked loop is achieved by low-pass filters 19, 22, 23 and the inherent integration function of the VCO 16 of the phase-locked loop, to enable better tracking of the low frequency variations in the angular speed of the rotating magnetic memory.
Patent GB-1184578-A (GB)
Title: Laminated Structure and Method of Preparing the Same.
IPC: E04C2/24
Filed: 1967-07-14
Abstract: 1,184,578. Laminated cladding panel. MONSANTO CO. 14 July, 1967 [14 July, 1966], No. 32629/67. Heading B5N. A laminate comprises a foamed resin core 11, an absorbent paper sheet 12 attached to one surface of the core, an adhesive 13, which has permeated through the paper to contact the core, and a layer, e.g. of discrete particles 14, held by the adhesive layer 13. A second sheet of adhesive-impregnated paper 12 may be secured to the other surface of the core. A further layer 14 (not shown) may be secured to this second sheet. The core may be of polystyrene, acrylonitrile-butadiene-styrene copolymer, polyurethane, alkyd resin, rigid P.V.C., phenolic resin, epoxy or urea foams. The core is 0À05-2À0 inches thick. The core density may range from 1-10 lb. per cubic foot. 42 lb. kraft paper may be used for the sheets 12. The adhesive used may be derived from animals, fish, casein or soybeans or may be based on natural or synthetic rubber, polysulphide, phenolic resin, resorcinol resin, amino resin, isocyanate, polyvinyl acetate, polyvinyl acetal, polyvinyl ether, cyanoacrylate, polyamide or epoxy resin. The adhesive may be diluted with a solvent to reduce its viscosity and thus ensure that it permeates the paper satisfactorily. The layer 14 may be formed of wood, brick, stone, metal, ceramic, synthetic resin, cloth, glass or (as shown) marble chips and sand.
Patent GB-833272-A (GB)
Title: Lubricant for continuous casting of readily oxidizable metals
IPC: B22C3/00
Filed: 1957-10-18
Abstract: A mould lubricant comprises 0.5-10% of boric acid, dispersed in an animal or vegetable oil.  Examples of oils are plam, peanut and lard oil.  Graphite or carbon particles, suspended in oil (e.g. mineral oil) thickened by a soap (e.g. calcium stearate), may be added. Specification 667,252 is referred to.
Patent GB-630780-A (GB)
Title: Improvements in and relating to the silvering of non-metallic heat-resisting bases
IPC: C03C17/06
Filed: 1947-12-11
Abstract: Non-metallic heat-resisting bases capable of withstanding a firing temperature of at least 400 DEG C., such as glass, mica, porcelain, earthenware and electrical insulating materials, are silvered by applying to the base a layer of fusible flux including an alkali titano-silicate, firing such layer, applying to the fired-on flux layer a layer or film of silver powder or a silver compound dispersed in an organic medium, and firing the coated base to burn away the organic matter and leave a firmly adherent layer or film of silver. The flux, which may comprise two parts of lead borosilicate and one part of sodium titano-silicate, may be applied by painting a dispersion thereof in a 5 per cent solution of nitrocellulose in amyl lactate on the base, which may then be fired at 500-700 DEG C.  The silver, or silver oxide or carbonate, dispersed in a similar solution, is then applied and also fired at 500-700 DEG C. Specifications 566,718, 573,201, [Group XXXVI] and 32154/45 (as open to inspection under Sect. 91) are referred to.
Patent GB-1403952-A (GB)
Title: Secondary recovery using carbon dioxide
IPC: E21B43/16
Filed: 1973-07-09
Abstract: 1403952 Wells TEXACO DEVELOPMENT CORP 9 July 1973 [27 July 1972 (3)] 32691/73 Heading E1F A process for recovering oil from an oilbearing reservoir comprises the steps of injecting via an injection well a slug comprising carbon dioxide under pressure or mixed with a light hydrocarbon or with a gas, such as methane, natural gas, separator gas, flue gas, nitrogen or air, whose solubility in the reservoir oil is less than that of carbon dioxide, which slug is not miscible with the oil in the reservoir but becomes miscible by vapourising intermediates from the oil, thereby forming a conditionally miscible transition zone, and then driving the oil to be recovered from a production well by injecting a driving agent. The driving agent may be air, nitrogen, combustion gas, separator gas, natural gas, methane, water and/or brine; a fluid which may be the same as the driving agent, may be injected into the well before the slug to increase the pressure of the reservoir.