baber/WOPTO huggingface dataset:
Patent GB-1157022-A (GB)
Title: Tetracycline Antibiotic Recovery Process
IPC: C07C211/63
Filed: 1966-11-24
Abstract: 1,157,022. Purification of tetracycline-antibiotics. CHAS. PFIZER & CO. Inc. 24 Nov., 1966 [3 Aug., 1966], No. 52730/66. Heading C2A. An improvement in the process for obtaining a complex of a tetracycline antibiotic from an aqueous medium containing a fermentationproduced tetracycline antibiotic obtained from a filtered and decalcified fermentation broth, by reacting at least a molar equivalent amount of a quaternary ammonium salt therewith at a pH of from 5 to 12, is characterized in that the quaternary ammonium salt has the formula: wherein R is alkyl having 9 to 18 carbon atoms and X is chloride, bromide or iodide. The preferred pH range is 8 to 11 and the antibiotic quaternary ammonium complex is separated as a precipitate or extracted with a waterimmiscible polar organic solvent. The antibiotic as free base or salt is recovered from the organic solvent solution by conventional methods. Typical quaternary ammonium salts are trimethyl 2-methyl decylammonium chloride, trimethyl 2-methylhexadecylammonium chloride and especially Arquad L-11 (mainly C 10-13  alkyl) and Arquad L-15 (mainly C 14  to C 19  alkyl) trimethyl 2-methyl alkyl ammonium chlorides. The tetracycline-antibiotic may be tetracycline, oxytetracycline, chlortetracycline or 7-chloro-6-demethyl tetracycline. Specification 775,916 is referred to.
Patent GB-1335696-A (GB)
Title: Process for the production of amylose films
IPC: C08K5/05
Filed: 1970-11-06
Abstract: 1335696 Amylose film-forming compositions HAYASHIBARA CO 6 Nov 1970 [9 Nov 1969 10 Dec 1969] 52977/70 Heading C3U [Also in Division B5] In a process for preparing amylose films amylopectin-free amyloses containing not less than 50 wt. per cent of amylose having a degree of polymerization of more than 100 and not more than 50 wt. per cent of amylose with a D.P. of less than 100 and obtained by hydrolysing amylomaize starch, cereal starch or root and tuber starch with an α-1,6-glucocidase are dispersed in a suitable solvent and cast into films with the addition of a suitable plasticizer (e.g. a polyhydric alcohol). In examples amylomaize starch, potato starch, common corn starch and tapioca starch are first reacted with α - 1,6 - glucosidase (obtained by cultivating strains of Pseudomonacs, Lactobacillus or Escherichia enzymes) to hydrolyse the amylopectin present to straight chain amylose and the resultant products, which consists of mixtures of long (greater than 100) and short (D.P. less than 100) chain amylose are dispersed in alkali, cast on to glass plates and coagulated as films by immersion in H 2 SO 4 /Na 2 SO 4  baths. The films are plasticized by addition before casting of sorbitol or maltitol or by immersion of the coagulated films into solutions of glycerol.
Patent GB-1316489-A (GB)
Title: Paramagnetic gas measuring device
IPC: G01N27/74
Filed: 1970-11-09
Abstract: 1316489 Measuring paramagnetic gas concentration M S A ITALIANA SpA 9 Nov 1970 [1 Dec 1969] 53272/70 Heading G1N An arrangement for measuring the concentration of a paramagnetic gas in a mixture comprises a hollow cylindrical magnet 1 closed by portions 2 and 3 and having internal pole pieces 4, 5, as shown tapered, providing a gap through which the gas flows from an inlet 20 to an outlet 21, four electrical heating resistances 11, 12 being disposed in the gap and being arranged in a bridge circuit and fed from a D.C. supply across one diagonal, the current measured across the other diagonal being a measure of the concentration of paramagnetic gas. Stiff vertical connecting wires 14 fixed to the resistances 11, 12 extend upwards through the pole piece 4. In operation adjustment of a parallel potentiometer Fig. 5, (not shown) is made to obtain a zero meter reading with zero paramagnetic gas. When paramagnetic gas enters the gap it is heated by the heater resistances and its susceptibility reduced. A magnetic wind is therefore created, cool gas being attracted into the gap and displacing warm air. The flow is such that heat is removed from the inner resistances 11 and carried to the outer resistances 12 thus unbalancing the bridge. The difference in temperature is proportional to the rate of gas flow and hence the concentration of paramagnetic gas.
Patent GB-1107650-A (GB)
Title: Fluid film lubrication for the extrusion of metal
IPC: C03C4/00
Filed: 1965-12-16
Abstract: In the extrusion of a metal billet, a plurality of layers of glass with different softening temperatures are used as a lubricant.  Many examples are given of silicon and lead base glass compositions.  The following glass compositions may also be used <TABS:1107650/C1/1>
Patent GB-1151220-A (GB)
Title: Syphonic Device for use in a Flushing Cistern
Inventor: DAVIES PERCY THOMAS
IPC: E03D1/14
Filed: 1965-12-16
Abstract: 1,151,220. Flushing cisterns. R. & A. G. CROSSLAND Ltd. 8 Dec., 1966 [16 Dec., 1965], No. 53389/65. Heading E1C. In a syphonic device for use in a flushing cistern in which the flush is initiated by a piston 19, a weight 22 is mounted on the piston and shaped to co-operate with a frustoconical seat 17a and a port or ports 18 in the top of the cyinder to permit a full or partial flush.
Patent GB-1099049-A (GB)
Title: A method of manufacturing transistors
IPC: H01L29/73
Filed: 1966-11-30
Abstract: 1,099,049. Semi-conductor devices. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Nov. 30, 1966 [Dec. 28, 1965], No. 53565/66. Heading H1K. The base and emitter regions 9, 10 of a planar transistor are diffused through the same window 8 in a masking layer 7 on a semi-conductor body 1, preferably during a single diffusion stage, a surrounding frame-like zone 5 of the same conductivity type as the base 9 having first been diffused through a window in the initial masking layer 2. In the embodiment described the semi-conductor body 1 is of silicon, and forms the collector region after the various diffusion stages through the masks 2, 7, which comprise silicon dioxide layers. Ohmic contact to the emitter region is made through the window 8, while contact to the base region 9 is made by etching windows in the layer 7 above the zone 5, and applying contacts thereto. The conductivity of the zone 5 may be greater than, equal to or less than that of the base region 9.
Patent GB-1180150-A (GB)
Title: A Drawing Appliance
Inventor: DANJCZEK WILLIAM EMIL
IPC: B43L13/00
Filed: 1968-11-12
Abstract: 1,180,150. Writing machine. H. RIEPE, and K. H. DITZE, [trading as RIEPEWERKE]. 12 Nov., 1968 [5 Dec., 1967], No. 53698/68. Heading B6P. In a writing machine (Fig. 1) comprising a main arm 12 for carrying a drawing-pen and a swivel arm (22) carrying a stylus, an internally screw-threaded pen mount 20 inserted perpendicularly through an opening in the main arm 12 is primed with an external shoulder 46 which abuts a horizontal shoulder 48 and a bottom flange 56 which abuts the underside of the main arm 12 adjacent the opening. An internal annular shoulder 44 in the mount 20 abuts a shoulder 38 of the pen when the same is screw-threaded into the mount. It is stated in the acknowledgment of prior art that it has been proposed to use a fixing means mechanically attached to the main arm for holding the drawing-pen in an internally threaded sleeve, wherein the sleeve and the pen are held in a perpendicular position to the main arm by magnetic means.
Patent GB-1368476-A (GB)
Title: Process for dyeing cellulose fibres
IPC: D06P3/66
Filed: 1971-11-19
Abstract: 1368476 Dyeing cellulose with azoic and reactive dyes FARBWERKE HOECHST AG 19 Nov 1971 [20 Nov 1970] 53973/71 Addition to 1368128 Heading D1B Yarns and sliver of cellulose fibres in the form of a wound package are impregnated with an aqueous liquor comprising an alkaline substance, one or more azo coupling componets and one or more reactive dyes, the package then being injected with one or more weakly acidic solutions each comprising one or more diazomium compounds each derived from an aromatic amine, the reactive dyes being fixed either before or after the injection of the weakly acidic solutions by dwelling at a temperature of from room temperature to 60‹C. The alkaline substance is preferably sodium hydroxide and the reactive dyes preferably contain a vinylsulphonyl group or a group which forms a vinylsulphonyl group in alkali. The preferred coupling components are arylamides of aromatic or heterocyclic-ohydroxy-carboxylic acids or of acylacetic acids or aromatic or heterocyclic hydroxy compounds, or a compound containing an enolizable or enolized ketomethylene group in a heterocyclic ring. Impregnation may be effected at 20 to 70‹C followed if desired by drying at temperatures up to 100‹C.
Patent GB-1300562-A (GB)
Title: Manufacture of thermoplastic polymer foams
Inventor: ANDERSON NORMAN STEWART
IPC: C08J9/10
Filed: 1969-11-05
Abstract: 1300562 Foams made with a benzotriazinone as blowing agent IMPERIAL CHEMICAL INDUSTRIES Ltd 16 Oct 1970 [5 Nov 1969] 54264/69 Heading C3C A foam comprises a thermoplastic polymer foamed by the thermal decomposition products of a benzotriazinone. The polymer may be polyethylene, polypropylene, polymethyl methacrylate, an ethylene/2-hydroxyethyl methacrylate/ methyl methacrylate terpolymer or a polyamide, e.g. polycaprolactam (nylon 6), polyhexamethylene adipamide (nylon 6 : 6), polyundecanolactam (nylon 11), or a copolymer of nylon 6 : 6 and hexamethylene isophthalamide. The benzotriazinone may be of formula where X is a substituted or unsubstituted alkyl or aryl group or a 1,2,3-benzo-triazin-4-on-3-yl group. The foam may be made either by heating a thermoplastic polymer with the benzotriazinone at a temperature above the m.p. of the polymer and above the decomposition point of the benzotriazinone, or by polymerizing caprolactam anionically in the presence of a benzotriazinone at a temperature above its decomposition point. A surface active agent may be present during the foaming.
Patent GB-1440482-A (GB)
Title: Hydraulic accumulators
IPC: F02M37/00
Filed: 1973-11-23
Abstract: 1440482 Valves NIPPONDENSO CO Ltd 23 Nov 1973 [27 Nov 1972] 54506/73 Heading F2V An hydraulic accumulator 3 having a diaphragm 2 as a flexible wall to control the pressure of fuel in the accumulator is provided with an external chamber 5 covering the diaphragm and open to atmosphere via a port controlled by a valve 13. When the accumulator is in use the valve is normally open to connect the chamber 5 to atmosphere, but, when leakage occurs across the diaphragm, the valve is closed by a spring 7 so that the leaked fuel is contained by the chamber.
Patent GB-1172230-A (GB)
Title: A Method of Manufacturing Semiconductor Device
IPC: H01L21/00
Filed: 1966-12-06
Abstract: 1,172,230. Schottky barrier device. MATSUSHITA ELECTRONICS CORP. 6 Dec., 1966 [16 Dec., 1965 (3)], No. 54567/66. Heading H1K. [Also in Division C7] A Schottky barrier of tungsten or molybdenum is provided on a body of germanium, silicon or gallium arsenide by forming a gaseous mixture of hydrogen and tungsten or molybdenum halide, heating the gas mixture to 600‹ to 900‹ C. and passing the mixture over the body heated to not more than 500‹ C. An N-type epitaxial Si film 12, 1-5 Á thick and of 1-5 # cm. resistivity is grown on an N-type Si substrate 11 of 0À005 Q cm. by thermal decomposition of SiCl 4 . A perfect metal film 13 is grown on the film 12. An electrode 14 of Al, Au+Sb, Ni or Cu is deposited on the metal film and an ohmic contact 15 made to the substrate. The mesa form is obtained by etching and photo-resist techniques. In another embodiment (Fig. 9, not shown), a thin film diode is made by depositing an epitaxial Si film (22) on an insulating substrate (21) of sapphire, quartz, glass or ceramic and then the metallic film (23) over the Si film. In an alternative embodiment (Fig. 10, not shown) a semi-conductor substrate (31) is covered with an insulating layer (32) through which is formed a hole (33) and the perfect metal film (34, 35) deposited thereover. A metal base transistor may be made using this deposition technique.
Patent GB-546623-A (GB)
Abstract: 546,623. Isoxazole-carboxylic acid amides. HOFFMAN-LA ROCHE & CO. AKT.-GES., F. Dec. 9, 1940, No. 17909. Convention date, Feb. 27. [Class 2 (iii)] 3 : 5 - Dimethylisoxazole - 4 - carboxylic acid mono- or di-substituted amides are prepared by reacting the correspondingly substituted amides of acetoacetic acid with ethylenediamine and after acylating the resulting ethylenediamino-bis-crotonic acid amides, treatthem with hydroxylamine. The substituents may be alkyl, aryl, aralkyl and cycloalkyl groups, or together may represent a ring system such as morpholyl or piperidyl. The products possess therapeutic properties. According to the examples, (1) acetoacetic acid diethylamide is treated in alcoholic solution with ethylenediamine hydrate ; the product is acetylated with acetic anhydride and an aqueous solution of hydroxylamine sulphate added ; the product consists of 3 : 5-dimethylisoxazole-4-carboxylic acid diethylamide ; (2) in a similar way, the di-n-propylamide, N-methylanilide and α- methylpiperidide of 3 5-dimethylisoxazole-4- carboxylic acid are prepared from the corresponding amides of acetoacetic acid. Specification 451,913 is referred to.
Patent GB-1169809-A (GB)
Title: A Typewriter
IPC: B41J7/94
Filed: 1967-12-04
Abstract: 1,169,809. Typewriters. INTERNATIONAL BUSINESS MACHINES CORP. 4 Dec., 1967 [28 Dec., 1966], No. 55018/67. Heading B6F. A power driven typewriter, in which a selected serrated cam 41 coacts with a continuously driven power roll 47 to effect an impression, includes impact adjustment mechanism responsive to a case shift wherein a greater striking force is initially applied to the type bar 11 when in the upper case and a stop finger 61 responsive to the case shift disengages the cam from the power roll after a time of contact such as to compensate for the increase in striking force applied, adjustment also being effected during a case shift operation. The impression density of each character is controlled by a finger 61 resting on an individually adjustable upper or lower case stop screw 57, 59 by engaging a heel 63 of the cam 41 to disengage the cam from the power roll. The stop screws 57, 59 are mounted on a bar 56 which is rocked about a pivot 71 by the case shift mechanism. The position of the bar 56 is adjustable by an impact control lever (105), Fig. 2 (not shown), for collective adjustment of the impression density as described in Specification 1,169,810. The case shift mechanism rotates a plate 23 mounted on a shaft 25 to move the pivots 13 of the type bars through linkage (not shown). A pin 79 on the plate 23, moves a link 73 after a delay caused by lost motion in a slot 83 by sliding in a slot 85, the link 73 being connected to the bar 56 through a bracket 77, thus rocking the bracket about the pivot 71. The delay enables the impression density to be correct when case shift and character keys are redepressed simultaneously.
Patent GB-1417873-A (GB)
Title: Decoder apparatus adapted for different 4-channel matrix systems
IPC: H04S3/02
Filed: 1973-11-28
Abstract: 1417873 Quadraphonic decoders SANSUI ELECTRIC CO Ltd 28 Nov 1973 [30 Nov 1972] 55087/73 Heading H4R  In a 4-2-4 decoder switchable between two matrix types the sum 11, 22 and difference 12, 21 of the composite signals L T , R T  are added and subtracted at 13 to produce front signals FL<SP>1</SP>, FR<SP>1</SP> and at 23 to produce rear signals RL<SP>1</SP>, RR<SP>1</SP>, the ratio of the composite sum and differ ence signals at 13, 23 being altered S1, S2 according to the matrix type together with the introduction of a 90 degree phase difference between the composite sum and difference signals at 23. The amplitude ratios are 0À414 produced by resistive dividers R1, R2 and R3, R4 or variable gain amplifiers (Fig. 2, not shown) including transistors whose emitter resistors are shunted by an FET whose impedance is controlled by selection of an appropriate control voltage from a source (44). The- 90 degree phase shifters 31, 32 enhance one matrix type without hindering the other and reference phase shifters may be included in the input and output circuitry.
Patent GB-1438124-A (GB)
Title: Circuit board sockets
IPC: H01R12/71
Filed: 1973-11-28
Abstract: 1438124 Two-part coupling E I DU PONT DE NEMOURS & CO 28 Nov 1973 [30 Nov 1972] 55228/73 Heading H2E A socket with a solder resistant inner surface, with a separate internal solderable contact spring, is intended to fit in a hole in a printed circuit board. The outer surface may be solderable. The socket shown is bent up from flat metal, and can have external springs 32 to locate it. The contact spring 12 has a tab 18 extending through the socket and a solder resist is then applied in a band 42. The surface treatments are intended to stop solder wicking into the socket interior.
Patent GB-1154272-A (GB)
Title: Alkylmercaptoumarin Derivatives
Inventor: SARKAR ASIM KUMAR
IPC: C07D311/16
Filed: 1967-03-29
Abstract: 1,154,272. Alkylmercaptocoumarin derivatives. HICKSON & WELCH Ltd. 6 March, 1968 [29 March, 1967; 8 Dec., 1967], Nos. 14348/67 and 56036/67. Heading C2C. [Also in Division Dl] Novel compounds of formula where R 1  represents a hydrogen atom or alkyl group; R 2  represents an unsubstituted or substituted alkyl group R 3  represents an alkyl group; Ar represents a phenyl group either unsubstituted or substituted by one or more non-ionogenic and non-chromophoric groups and n represents O or an integer from 1 to 3, are prepared by (a) alkylating the corresponding -SH compound (b) cyclizing a compound of formula prepared by reaction of an aldehyde of formula with a cyanide of formula ArCH 2 CN or (c) reaction of a coumarin derivative of formula with a diazonium compound of formula ArN 2 Cl where R 6  = R 2 . 3 - Phenyl - 7 - thiocyanocoumarin is prepared by reacting the diazonium chloride of 3-phenyl- 7-aminocoumarin with KSCN and FeSO 4  and is then converted to 3-phenyl-7-mercaptocoumarin with Na 2 S/EtOH. A compound of formula. in which R 2  = Et, R 3  = Me, n = 1 and Ar = C 10 H 5  is isolated.
Patent GB-1443997-A (GB)
Title: Charcoal grill
IPC: F24B3/00
Filed: 1973-12-05
Abstract: 1443997 Charcoal grill M A PASIN 5 Dec 1973 [11 Dec 1972] 56326/73 Heading A4D A charcoal grill or stove comprises a dished member 12 open at the top and having a bottom wall 10 to receive charcoal briquettes (32), a grill (24) dimensioned to rest on the upper edges of the dished member so as to span the open end thereof, and an opening 36 in one of the vertically disposed walls through which a shaft portion 40 of a rake 38 extends loosely beyond the dished member, the rake having a handle 42 on one end of the shaft and a head member 44 extending substantially perpendicularly from the other end portion of the shaft within the dished member. As shown, the dished member made of a heat-resistant metal such as cast iron or an alloy such as steel comprises a  rectangularly shaped member having the horizontally disposed bottom wall 10, side walls 12 and 14, and front and back walls (16) and (18) respectively. The charcoal briquettes (32) are either supported by the bottom wall 10 or by a grate provided with corrugations (34) in its surface, the spacing between the corrugations preferably being less than the size of the briquettes. The opening 36 in a side or end-wall is preferably midway crosswise and vertically in the respective wall and is larger in cross-section than the cross-section of the shaft portion 40, the latter being longer than the distance between the aligned walls. The head member 44 which in Fig. 2 is U-shaped can be provided with additional prongs or the rake can have a solid plate extending substantially perpendicularly from one end of the shaft portion. As shown, the grill 24 is formed of longitudinally spaced metal rods 26 extending crosswise and in parallel relation and joined by a metal wire frame 28 on which the rods are disposed, the metal wire frame 28 being formed to a rectangular shape having the lengthwise dimension greater than the distance between the upper ends of the side walls 12 and 14 and the crosswise dimension slightly less than the distance between the upper ends of the front and back walls (16) and (18) respectively. The end portions 30 of the frame 28 are offset upwardly to define a central rod supporting rectangular portion which can be cradled into the open end of the stove while the end portions 30 rest on the lips (20) of the side walls for support. The stove can be of other conventional shapes such as rounded or oval.
Patent GB-1433559-A (GB)
Title: Derivatives of glycyrrhetinic acid
IPC: C07J63/00
Filed: 1973-12-06
Abstract: 1433559 Metoclopramide glycyrrhetinic salts BIOREX LABORATORIES Ltd 21 Nov 1974 [6 Dec 1973] 56477/73 Heading C2U The invention comprises the metoclopramide salts of (i) 3-dehydroglycyrrhetinic acid, (ii) glycyrrhetinic acid 3-acylated with a mono-, di- or polybasic organic or inorganic acid, and (iii) glycyrrhetinic acid 30-esters 3-acylated with a di- or polybasic organic or inorganic acid; and their preparation by reacting the two components of the salt in a solvent. Anti-inflammatory compositions for oral and parenteral administration comprise an inventive compound and a carrier.
Patent GB-1411296-A (GB)
Title: Conveyor belt
IPC: B29D29/06
Filed: 1972-12-07
Abstract: 1411296 Laminated conveyer belt INDUSTRIE PIRELLI SpA 7 Dec 1972 [17 Dec 1971] 56535/72 Heading B5N A conveyer belt comprises a reinforcement structure comprising at least one layer 4 constituted by a plurality of coplanar cords 5 embedded in elastomeric or plastics material such that the cords are parallel to one another and to the longitudinal axis of the belt and two layers 2 and 7 of fabric having an extensibility in the longitudinal direction of the belt substantially greater than the layer or layers of coplanar cords, one layer of fabric being provided at each outer face of the coplanar cord layer or layers, a layer 3, 6 of elastomeric or plastics material interposed between said coplanar cord layer or layers and each layer of fabric wherein the ratio between the thickness of each said layer of elastomeric or plastics material and the diameter of the coplanar cords is smaller than 0À166 and in that the ratio between adjacent cords of the coplanar cord layer or layers, measured between their axes, and the diameter of each of the said cords ranges from 1À5 to 6. In the embodiment shown, each outer face of the belt is covered with a layer 1, 8 of elastomeric or plastics material, the two layers 1 and 8 optionally having different thicknesses. In a further embodiment, two adjacent layers of embedded cords are provided. The fabric layers 2 and 7 may each comprise woven fabrics, the warp threads, e.g. of nylon, being parallel to cords 5 of layer 4 and the weft threads, e.g. of nylon or cotton/nylon, having an extensibility less than that of the warp threads. Alternatively, the fabric layers may each comprise cord fabrics wherein the cords are of cotton/nylon or nylon arranged transversely or on the bias to the longitudinal axis of the belt.