baber/WOPTO huggingface dataset:
Patent GB-875853-A (GB)
Title: Improved process for the production of polymeric material
Inventor: BILD FREDERICK
IPC: B29C48/76
Filed: 1959-07-03
Abstract: Polymers are made from a monomeric or partially polymerized material consisting solely of methyl methacrylate, or of a mixture of methyl methacrylate and a copolymerizable monoethylenically unsaturated compound, by continuously feeding the polymerizable substance, in admixture with from 0,001%-5% of its weight of a free radical organic polymerization catalyst which has a half-life of not less than one minute nor greater than 60 minutes at a temperature selected from the range of from 130 DEG -150 DEG C., but in the absence of a dispersing or solvent medium, into a reaction apparatus having one or more feed inlets connected by a duct to a delivery outlet, the material being caused to flow along at least part of the duct through at least one zone maintained at a temperature which is selected from the range of from 130 DEG -150 DEG C., and at which the catalyst has the said half-life, and thereafter continuously discharging polymerized material from the delivery outlet of the apparatus.  A suitable form of apparatus for carrying out the process is a screw extruder having a polymerization zone, a catalyst destruction zone and a vapour extraction zone in which unpolymerized monomer is removed. Catalysts specified are cumene and tert. butyl hydroperoxides, dicumyl and di-tert. butyl peroxides, di-tert. butyl diperphthalate, tert. butyl peracetate and perbenzoate and methyl ethyl ketone peroxide. Copolymerizable monomers specified are styrene, acrylonitrile, methyl and ethyl acrylates and methacrylamide.  Also present during polymerization may be mercaptans, e.g. lauryl mercaptan, monothioglycol and thioglycollic acid and esters.  When the starting material employed is partially polymeric, it may be obtained either by polymerizing methyl methacrylate to a syrup, e.g. by heating in the presence of an azo catalyst, or by adding solid polymer to the monomer.
Patent GB-830027-A (GB)
Title: Selenium rectifier
IPC: H01L21/108
Filed: 1958-07-17
Abstract: 830,027. Selenium rectifiers. STANDARD TELEPHONES & CABLES Ltd. July 17, 1958 [Jan. 27, 1958], No. 22926/58. Drawings to Specification. Class 37. A method of making a selenium cell with a low forward resistance comprises applying a layer of crystalline selenium on to a base-plate, applying a second relatively thin layer of selenium in amorphous form on to the first layer, then applying a counter-electrode on to the second layer and heat-treating the cell at a temperature and for a time sufficient to convert the amorphous selenium to the crystalline form and produce the appropriate reaction between the selenium and the counter-electrode. Preferably the cell comprises a base-plate of nickelplated aluminium on which grey selenium is vaporized at a temperature of 140‹ C. to a depth of 50 to 100 microns, preferably 60 microns, amorphous or black selenium is then vaporized on to the grey selenium to a thickness of 1 to 10 microns, preferably 2 microns, at a temperature of 30-110‹ C. A barrier layer, e.g. of nylon, 0.01 microns thick, may then be applied if desired, otherwise the counterelectrode is sprayed on, comprising e.g. an eutectic alloy of 67% tin and 33% cadmium, the assembly is then fired at a temperature of 215‹ C. for about 15 minutes before electrically forming the rectifier.
Patent GB-1071435-A (GB)
Title: Penicillin betaines
Inventor: HARDY KENNETH DAVID
IPC: C07D499/44
Filed: 1965-05-29
Abstract: The invention relates to betaine penicillins of formula <FORM:1071435/C2/1> where Q+ is a quaternary ammonium group derived from a tertiary amine Q and X is a divalent organic radical.  Typical betaines are a -trimethylaminobenzylpenicillin betaine, pyridinium methyl penicillin betaine and a -(pyridinoacetamido)benzyl penicillin betaine. The betaines are prepared by quaternizing, with a tertiary amine Q, a penicillin or non-toxic salt thereof, of formula <FORM:1071435/C2/2> where Q and X have the above meanings and R is the acid residue of a reactive ester, e.g. a halogen atom, a sulphuric acid residue, e.g. methoxy-sulphonyloxy or a sulphonic acid residue, e.g. toluene p-sulphonyloxy group. The tertiary amine is a trialkylamine, a heteroaromatic base or a reduced heteroaromatic base.
Patent GB-410994-A (GB)
Title: Improvements in luminous electric discharge lamps
IPC: H01J17/00
Filed: 1933-08-17
Abstract: 410,994. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Assignees of Patent-Treuhand Ges. fur Electrische Gl³hlampen ; 11, Ehrenbergstrasse, Berlin.) Aug. 17, 1933, No. 22986. Convention date, Aug. 19, 1932. [Class 39 (i).] In lamps such as those described in Specifications 352,352 and 370,338, in which the discharge is surrounded by a metal enclosure and is viewed along the length of the positive column, a single metal enclosure 6 is divided by a metal partition 9 into two parts each enclosing an electrode 10, 11 and the discharge traverses a tube 12 through the partition 9 and is viewed through a window 13 in the enclosure 6. The enclosure 6 may be a flat rectangular box heated by the discharge to dull red heat and may contain alkaline earth metals reaching an adequate vapour pressure at 600-800‹ C. To keep these metals in the box, the envelope 1 is filled with rare gas at a pressure of several mms. and an extension tube 14 is provided at the window 13. The electrodes 10, 11 may consist of or be coated with materials emitting electrons thermionically and preferably consist of a sintered mixture of refractory metals and alkaline earth oxides. A ring 15 in front of the window 13 may form the anode of a directcurrent lamp using both electrodes 10, 11 as cathodes, or the ring 15 may be used as an auxiliary starting electrode connected to one terminal of the normal supply or of a supply of higher tension. In a modification, the ring 15 is omitted, the partition 9 is diagonal and the tube 12 is vertical.
Patent GB-645247-A (GB)
Title: Improvements in and relating to boxes and like containers, secured on walls or the like
IPC: G07B15/06
Filed: 1948-09-02
Abstract: 645,247. Securing boxes to walls &c. HASLAMS (SHEET METAL WORKERS), Ltd., HASLAM, W., and WEBSTER, H. Sept. 2, 1948, No. 23118. [Class 18] A box or container, e.g. for receiving coins, fares or letters, is secured to a support by means of projecting portions of the rear wall 8 of the box slidably engaging flanges 6 on three sides of a plate 5 fixed to the support by sunk screws 7 adapted to be hidden by the wall 8, the plate 5 and wall 8 being secured together by a screw 12 that is only accessible through a hinged locked door 14. A slot 16 is provided in the top wall.
Patent GB-1040315-A (GB)
Title: A method of transferring stitches from needles of a knitting machine and a knitting machine for carrying out the method
IPC: D04B15/02
Filed: 1963-06-11
Abstract: After knitting a French welt on a double bed flat machine, all the stitches are transferred to one of the two beds 1, 2 of the machine, the tension comb 14 is released and the stitches are transferred to the points 12a or 12c of a magazine comb.  The machine may have loop transfer type needles 3 which co-operate with straight points 12a or the points 12c may be recessed and eye letted to receive conventional needle points.  The butts of the needles slide in grooves 6a in bars 6 driven by a carriage 4 and having ends supported by a member 7 rigid with a rod 5, a lost-motion being provided between bars 6 and carriage 4 and members 7.  Cams 9 on each bar 6 are engaged by retractable followers 13.  The needles of the front bed are raised simultaneously by bars 6 so that the points 12a or 12c will engage the needles 3.  A lock type revolution counter operates followers 13 through a bar 16 and comb 14 by cams 18.
Patent GB-1013011-A (GB)
Title: Process for the production of single-phase solid solutions
IPC: H01L35/12
Filed: 1962-06-15
Abstract: A single phase solid solution comprising two boundary systems, at least one of which is a peritectic boundary system, is produced by forming a melt of the components using an excess of the most soluble component compound, forming into a solid elongated body, and passing a molten zone backwards and forwards through the body with successive shortening of the travel of the molten zone so as to produce a single phase solid solution at the centre of the body.  The solid solution may comprise silver, lead, antimony and tellurium; silver, lead, antimony, tellurium and selenium; silver, lead, bismuth, tellurium and selenium; silver, antimony, bismuth and tellurium; and zinc, indium, tin, arsenic and phosphorus.  Zone-melting may be effected in a quartz boat coated with carbon.
Patent GB-1455666-A (GB)
Title: Aerodynamic ground-effect vehicle
IPC: B60V1/22
Filed: 1974-05-24
Abstract: 1455666 Tracked ground effect machine VEREINIGTE FLUGTECHNISCHE WERKE-FOKKER GmbH 24 May 1974 [26 May 1973] 23271/74 Headings B7K and B7L A ground effect vehicle which co-operates with a fixed track 8 comprises a wing formed with end plates 4 and secured to a cabin 5 having a propulsion unit 6, the cabin being extended forwardly by a structure 2 having a universal joint connection 10 with a carriage 3 guided by rollers 9 along the track 8. The vehicle carries a retractable undercarriage 7 which supports it when static. In forward motion a ground effect cushion is generated under the wing to support the vehicle, variation in pitch of the vehicle, about connection 10 being compensated automatically by variation of cushion pressure.
Patent GB-945757-A (GB)
Title: Fluid control valves
IPC: F16K17/28
Filed: 1961-06-27
Abstract: 945,757. Valves. OLIN MATHIESON CHEMICAL CORPORATION. June 27, 1961 [July 7, 1960], No. 23282/61. Heading F2V. A fluid-pressure control valve has a body in which is disposed a stepped axially-movable closure-member 7 with a through bore 19, and having a stem portion 9 slidably fitted in the body, an intermediate portion 12 and a base portion 8, the two latter portions being in a chamber 6, the portion 8 having an annular clearance with respect thereto, and providing an annular space 14 within the chamber 6, which space 14 communicates with a vent 16 when a shoulder 13 on the member 7 moves away from a coacting part of the body. The outlet port 20 is spanned by a seat 21 with diagonal ports 22 and annular extensions 23, 24 creating a central depression 25 and an annular space 26; alternatively this configuration may be formed on the base portions 8 or partly on the latter and the seat. When pressure fluid is introduced into the inlet 18 the member 7 is either already in or urged into the open position shown due to the area difference between the portions 8, 9 and an incomplete seal between the portion 8 and the seat 21; some of the fluid passes into space 14 until the pressure therein equals the outlet pressure. Upon a fall in the latter the pressure in space 14 urges the portion 8 into contact with the seat 21; this movement of the closure 7 opens the space 14 to the vent 16 and as the inlet pressure falls below that at the outlet the closure 7 is translated to the open position shown.
Patent GB-753500-A (GB)
Title: N, n-dibenzyl ethylenediamine
Inventor: PARKER GEORGE
Filed: 1953-08-25
Abstract: N,N1-dibenzyl ethylenediamine is prepared by hydrogenating N,N1-dibenzylidene ethylenediamine in the presence of a supported palladium catalyst.  The hydrogenation may be carried out at normal or elevated temperatures and pressures, temperatures between about 20 DEG  and about 45 DEG  C. and pressures of about 0-300 pounds per square inch gauge being specified.  The reaction may be carried out in an inert diluent such as methanol or ethanol and vigorous agitation is beneficial. The palladium catalyst is supported, for example, on charcoal or alumina, and 5 per cent palladium on alumina is specified.  The amount of catalyst used preferably gives about 0.25-1 per cent of palladium by weight of N,N1-dibenzylidene ethylenediamine used.  The hydrogenation product contains some 1:3-dibenzyl-2-phenyltetrahydroimidazole which is decomposed by acids to give N,N1-dibenzyl ethylenediamine and benzaldehyde.  The hydrogenation product is therefore hydrolysed with, for example, sulphuric or acetic acid, the benzaldehyde removed, and the N,N1-dibenzyl ethylenediamine salt recovered.  The salt may be purified by liberation of the free base, extraction of the base by a solvent such as butyl acetate, treatment of the base solution with decolourizing carbon, and the extract treated with an acid to give the corresponding salt.  In examples (1) and (2) the hydrogenation is carried out in methanol using a palladium or alumina catalyst, at a temperature of about 30-45 DEG  C. and at a pressure of 3.4 atmospheres until absorption of hydrogen ceases, the methanol is removed by distillation in vacuo and the residue boiled with sulphuric or acetic acid, the salt being obtained on cooling; (3) under conditions similar to those used in (1) and (2) a 5 per cent palladium on alumina catalyst is compared with the corresponding platinum catalyst; (4) the hydrogenation is carried out as in (1) but largely at 0 pound per square inch gauge and at 28 DEG  C.
Patent GB-985582-A (GB)
Title: Hydrocracking hydrocarbons with a platinum group metal containing large pore molecular sieve
IPC: C10G47/18
Filed: 1962-06-19
Abstract: The hydrocracking of hydrocarbon feedstocks is effected in the presence, as catalyst of a platinum group metal or compound thereof composited with a zeolitic alumino-silicate molecular sieve having a silica :alumina mol. ratio of at least 2.2 : 1, a pore size of 6-15 Angstrom units and a sodium content as Na2O of not more than 10%. The feed may be a petroleum distillate e,g. a gas oil or naphtha or a residual oil or whole crude.  Cracking is effected at 500-1000 DEG F., 0-2000 p.s.i.g. and 0.6-10 wt./hr./wt. with 750-25,000 SCF of hydrogen per barrel of feed.  The molecular sieve may be deionized, e.g. by base exchange with ammonium ions followed by calcination, or base exchanged with cobalt, nickel, zinc, magnesium, calcium, cadmium, copper or barium to reduce the sodium content.  The platinum group metal is introduced by impregnation or base exchange to an amount of 0.01-5% by wt. of the composite.  Dealkylation of alkyl aromatics in petroleum fractions may also be effected to produce benzene or naphthalene using the same method.
Patent GB-1132367-A (GB)
Title: Domestic cooker infra-red surface heater units
IPC: H05B3/74
Filed: 1966-05-26
Abstract: 1,132,367. Electric hot plates. GENERAL MOTORS CORP. 26 May, 1966 [24 June, 1965], No. 23651/66. Heading H5H. A hot-plate comprises an electrical resistance element 44 mounted on a support which comprises a number of radial arms 62, 76 detachably connected to a central hub 94, said arms having a number of grooves 74, 88 in which said element is located so as to be spaced from a lower plate 18 and an upper plate 38 of infra-red transparent material of low thermal conductivity. The ends of the ribbon element 44 are secured to terminals 46 and 48 and rotational movement of the support is prevented by a spring member 106 which engages two of the arms 62. The lower surfaces of the arms, which are of steatite or like ceramic material, are recessed to reduce the areas in contact with the plate 18, and a seal (34) (Fig. 5, not shown) is provided between the upper plate 38 and a ring member (22) supporting the lower plate 18 and clamped to the upper plate by a clamp ring (42).
Patent GB-741761-A (GB)
Title: Improvements in or relating to a valve structure
IPC: C21B9/12
Filed: 1953-08-27
Abstract: 741,761. Goggle valves. VULCAN RESEARCH CORPORATION. Aug. 27, 1953 [Oct. 28, 1952], No. 23681/53. Class 135. In a goggle or plate valve for large diameter gas mains, tubular seat members 5, 6, Fig. 2, secured to portions C, C<SP>1</SP> of the main and movable towards and away from the valve plate 2 by a differential screw mechanism 22, as described in Specification 719,251, [Group XXIV], are carried by seat carrier members 10, Fig. 1, having a plurality of connections with the seat members, each of which is individually adjustable. Each carrier member 10 comprises a triangular frame O<SP>1</SP>, O<SP>2</SP>, O<SP>3</SP> and bracing members I<SP>1</SP>, I<SP>3</SP>, I<SP>5</SP> arranged to form a hexagon-shaped member about its associated seat. Each corner of the hexagon is formed with a bracket 11, Fig. 3, welded to a rod 12 which passes through and is connected by a nut 16 to a U- bracket 15 fixed between the seat member and the main. The nuts 16 are independently adjustable so that when the seat members 5, 6 are in contact with the valve plate 2 effective sealing takes place over the whole of the contacting surfaces.
Patent GB-395181-A (GB)
Title: Improvements in and relating to combined thread tensioning and stop motion actuating devices, specially for creels of warping machines
IPC: D02H13/00
Filed: 1932-08-24
Abstract: 395,181. Thread-tension and stopmotion devices for warping-machines. ETABLISSEMENTS L. BERIDOT, Voiron, IsÞre, France. Aug. 24, 1932, No. 23714. Convention date, Aug. 27, 1931. [Class 142 (iv).] The combined device comprises a fixed member 3, Figs. 1 and 3, provided with a series of bars 4, and a pivoted member 5 provided with guide eyes 7 arranged between the bars 4, the thread 1 passing from the supply bobbin through the guide 2 and then around members 4, 7 in a zig-zag path having undulations of increasing amplitude. The member 5 is urged downwardly by a rubber cord or strip 8 and on breakage or failure of the thread or undue diminution of tension is pulled downwards into contact with a blade spring 15 secured to a terminal 11 and thereby completes a circuit to stop the machine or actuate an alarm signal. The tension in the cord 8 may be adjusted by turning the spindle 9.
Patent GB-666928-A (GB)
Title: Improvements in or relating to fungicides and insecticides incorporating diamidothiophosphates
IPC: C07F9/24
Filed: 1949-09-16
Abstract: A diamidothiophosphate of formula <FORM:0666928/IV (b)/1> where one of the R symbols is alkyl or cycloalkyl and the rest are hydrogen, alkyl, or cycloalkyl, one X is nitro and the other hydrogen, is prepared by treating <FORM:0666928/IV (b)/2> with an alkali metal nitrophenolate in the presence of a solvent and then with ammonia or an alkyl or cycloalkyl amine.  Both stages are exothermic and are cooled; an inert solvent such as ethanol may be employed.  The N-substituted dichlorothiophosphoramides used as starting-material are prepared by reacting an amine NHR3R4 with an excess, e.g. 1-4 mols., of thiophosphoryl chloride PSCl3.  In the examples, sodium p-nitrophenolate is reacted with N-ethyl dichlorothiophosphoramide and then further reacted (1) with ammonia to give O-4-nitrophenyl-N-ethyldiamidothiophosphate; (4) with methylamine to give O-4-nitrophenyl-N-ethyl - N1 - methyldiamidothiophosphate; similarly sodium p-nitrophenolate is reacted with N,N-dimethyl dichlorothiophosphoramide and then further reacted with (2) ammonia; (3) methylamine; and (6) cyclohexylamine; (8) thiophosphoryl chloride is treated with cyclohexylamine, and the product treated successively with sodium 4-nitrophenate and ammonia.  Other examples are given. The Specification as open to inspection under Sect. 91 comprises the preparation of the compound O-2-nitrophenyl-N,N-di-n-butyl-N1-(4 - phenylcyclohexyl) diamidothiophosphate.  This subject-matter does not appear in the Specification as accepted.
Patent GB-424969-A (GB)
Title: Improvements in and relating to screw propellers
IPC: B63H1/12
Filed: 1933-08-30
Abstract: 424,969. Screw propellers. FRIEDENTHAL, F., 41, Mulgrave Avenue, Ashtonon-Ribble, Lancashire, MURRAY, G. I., 16, Devonshire Road, Davonport Park, Stockport, and TURNER, W., 44, St. George's Street, Eccles, near Manchester. Aug. 30, 1933, No. 24022. [Class 114] Those portions of the blades where erosion occurs are protected by a covering 3 of rubber, rubber compound or mixture or a synthetic resin compound. The blade portions are made as smooth as is mechanically possible, holes being filled in, and the covering material rolled or pressed on to the blade to make " optical contact" therewith ; the covering when of rubber is then vulcanized. The blades may be recessed to receive the covering, which may be carried around the edge of the blade on to the other face. The edges of the covering may be tapered off to merge into the blade. Reference has been directed by the Comptroller to Specifications 1793 /88, 3071 /92, and 23580 /97, [all in Class 114].
Patent GB-838532-A (GB)
Title: Cooling apparatus and the like and refrigeration systems incorporating the same
IPC: F28C1/00
Filed: 1956-08-03
Abstract: 838,532. Cooling liquids. DUNHAMBUSH Inc. Aug. 3, 1956 [Aug. 3, 1955], No. 24037/56. Class 64(1) [Also in Group XII] Cooling apparatus comprises a gas and liquid contact unit 6 formed by corrugated sheet metal 15 having corrugations at an angle to the horizontal whereby liquid tends to flow downwardly along the corrugations, means to supply liquid from above the unit, and means to direct a stream of gas through the unit in countercurrent to the liquid. In the preferred embodiment, a fan 8 draws air through an opening 64 in a casing 4, the unit 6 and a screen 50 which intercepts water held in the air stream and directs it to the bottom of the unit. The latter receives water in the form of fine particles from an expanded sheet metal screen 44 on to which water flows from a large number of evenly spaced openings in a pan 12. A sump 16 provided with a strainer 20, an overflow 22 and a floatoperated water-supply valve collects the cooled water. The unit 6 consists of four assemblies 28, 30, 32 and 34 each of which has a rectangular redwood frame filled by corrugated strips 15 of copper or stainless steel, the corrugations of adjacent strips being inclined as shown in Fig. 5 so that they are prevented from nesting. The strips forming each horizontal layer may also have inclined corrugations so that a straight channel is not provided. Pronged metal strips 35 and angle bars 45 extending between the intersections of wire grid assemblies above and below the unit 6 support the corrugated strips. The apparatus may be used to supply cooled water to a condenser 69 forming part of a refrigeration system which also has a receiver 71, a motor-compressor 73, an evaporator 75 and a fan 77. A pump 79 returns the cooling water to the pan 12. In a modified construction two water-supply pans are provided at different heights above the unit and one pan is supplied by end conduits from the other.