baber/WOPTO huggingface dataset:
Patent GB-1344309-A (GB)
Title: Method for the production of d - -alpha-aminobenzyl-penicillin
IPC: C07D499/68
Filed: 1971-11-26
Abstract: 1344309 Preparing ampicillin ARCHIFAR INDUSTRIE CHIMICHE DEL TRENTINO SpA 26 Nov 1971 [25 June 1971] 54967/71 Heading C2A D(-)-α-Aminobenzylpenicillin (ampicillin) is prepared from a natural penicillin produced by fermentation by esterifying the natural penicillin with an alkylchlorosilane in the presence of a tertiary amine and in a solvent which is acetone, a chlorinated hydrocarbon, or a mixture thereof, treating the ester with a chlorinating agent to convert the amide group at the 6- position into an iminochloride group, converting the iminochloride group into an imino-ether group by treatment with a C 1- C 4  primary alcohol, reacting the imino-ether group with water and phenylglycylchloride hydrochloride in the presence of acetone (if not already present) at a temperature between - 50 and - 15 C. and pH of 1 to 2, and finally adding water to the solution of reaction products to hydrolyse off the esterifying group. The preferred natural penicillins are benzylpenicillin and phenoxymethylpenicillin, or a salt thereof. In an example, a benzylpenicillin solution in chloroform, produced by extracting a benzylpenicillin-containing fermentation broth with chloroform, drying the extract and concentrating to a content of about 10% benzylpencillin, is used as a starting material. The silane may be trimethyl silyl chloride or dimethyldichlorosilane, and the tertiary amine may be quinoline or dimethylaniline. PCl 5  is used as the chlorinating agent, and the preferred alcohol is butanol. Acetone is added to the imino-ether solution if not present from the start and the subsequent reaction with the acid chloride hydrochloride is effected at reduced temperature to minimize reaction thereof with the water, the latter reacting first with the imino-ether to give an intermediate which reacts with the acid chloride hydrochloride. Further water is then added and the temperature allowed to rise if necessary, to hydrolyse the silyl ester and give the desired ampicillin. The product is isolated by extracting the reaction mixture with chloroform to remove unwanted material and then adjusting the pH of the aqueous phase to pH 4 to 5 to precipitate the ampicillin as the trihydrate.
Patent GB-1455434-A (GB)
Title: Positioning device for moving a transducer to each of a plurality of discrete transducing positions defined on a record medium
IPC: G11B5/48
Filed: 1973-11-27
Abstract: 1455434 Transducer positioning device AMERICAN VIDEONETICS CORP 27 Nov 1973 [7 Dec 1972] 55034/73 Heading G5R In a track charging arrangement for a transducer 11, Fig. 1, a spring 25 urges a transducer support element 14 downwards to engage a stepped cam 27 and a brake 19 is operable to engage element 14 to prevent movement thereof by spring 25 whereby cam 27 can be moved from a position in which part 14a of element 14 engages a step 28 of cam 27 to a position in which part 14a is spaced above a lower step 28, the spring 25 moving element 14 to engage said lower step on release of the brake 19 to thereby effect track changing of transducer 11. When transducing a video magnetic tape 12, a solenoid 36 is momentarily energized near the end of one track whereby a spring 37 causes a pawl 33, engaging ratchet teeth 32, to advance cam 27 by one step while a spring 24 maintains the brake lever 19 engaged with transducer support rod 14, the end 14a thereby being spaced above cam 27. When the current-recorded track ends the tape 12 is reversed and at about this time a solenoid 22 is energized to release brake 19, transducer 11 then descending under the action of spring 25 by the track-to-track spacing until end 14a again contacts cam 27. A smooth section 29, Fig. 2, of cam 27 effects movement of transducer 11 straight from the bottom to the top track. A knob 59 may rotate a rod 58 to adjust the height of cam 27 via an eccentric 57 and a pin 56 to centre transducer 11 on a selected track. Pin 56 carries a support tube 39 and a rod 38 which is rotatable in tube 39 and carries cam 27. A plate spring 48 engages between a fixed support 13 and a washer 49 covering a felt washer (51), Fig. 5 (not shown), impregnated with viscous damping material to apply drag to cam 27; the space between rod 38 and tube 39 is filled with viscous damping fluid to apply drag to the rotation of rod 38. The selected track may be identified by means of brushes 45 engaging conductive portions 43a, and by viewing numbers on a flange 53 of cam 27 through a window 54.
Patent GB-1118669-A (GB)
Title: Purification of adenosine triphosphate
IPC: C07H19/10
Filed: 1966-12-08
Abstract: Adenosine triphosphate (ATP) contained in an aqueous solution which also contains other nucleotides (e.g. AMP or ADP) as impurity is purified by (1) adsorbing the ATP on to a strongly basic anion exchange resin followed by elution with an aqueous acid solution, (2) adsorbing the ATP on to a weakly basic anion exchange resin followed by elution with an aqueous dilute alkaline solution, and (3) contacting the ATP in aqueous solution with a non-ionic exchange decolorizing resin whereby coloring matter is adsorbed thereon while the ATP remains in solution.  In carrying out the process the aqueous solution of ATP which may be in salt form (e.g. as the disodium salt) is passed through a strongly basic anion exchange resin, e.g. a resin of the polystyrene quaternary ammonium type, and which is conveniently in salt form, to adsorb the ATP and other nucleotides and the adsorbed ATP is preferably eluted stepwise with aqueous mineral acid eluant having different and increasing concentration of the acid (e.g. HCl) and which may also contain a water-soluble salt (e.g. NaCl) and the resulting fractions are then treated with the weakly basic anion exchange resin which is preferably porous and in salt form and is suitably of the phenol-aliphatic amine type.  The ATP is then eluted with, e.g. dilute NaOH solution and the resulting solution, conveniently adjusted to a pH of not more than 5.0, e.g. 1.0 to 5.0, is passed through the decolorizing resin. Two or more resin columns connected in series may be used in the second step to improve the adsorption of ATP.  Suitable decolorizing resins are those having a porous structure and having phenolic hydroxy and anilino groups as active groups, e.g. those prepared by condensing phenol and metaphenylene diamine with formaldehyde. The ATP is recovered from the effluent from the decolorizing resin and the purified solution may be treated with a lower aliphatic alcohol, e.g. methanol or ethanol to crystallize the ATP, e.g. its disodium salt. The purified product has low toxicity and has therapeutic value.
Patent GB-1307328-A (GB)
Title: Lens forming equipment
IPC: B29D12/02
Filed: 1971-11-30
Abstract: 1307328 Grinding edges of lenses C R BRIGHT 30 Nov 1971 [30 Nov 1970] 55512/71 Heading B3D A device 20 for use in a lens edging machine comprises a disc 32 for rigid attachment to the shaft 18 of the machine, a plurality of cam members 40 spacedly arranged around and slidably mounted for radial movement on the disc, biasing means 49 one for each cam member for urging the cam members radially outwardly, each of the cam members having an arm 42 extending laterally thereof in a common direction, means 86 for releasably biasing the cam members radially inwardly, and means 66 for clamping the cam members when the means 86 is released and the arms of the members engage a lens frame positioned around the arms. The shaft 18 of the machine is rotated by a motor and has means for gripping a lens for edging by a grinding wheel and receives a tubular extension 24 of a shaft 22 keyed to the disc 32. The disc is radially fluted to slidably receive the cam members 40 which are U-shaped and have laterally extending arms 42, 43. Four of the cam members 46, 48 spaced apart by 90 degrees and at the horizontal and vertical meridians are urged radially inwardly by springs 54 and the remainder, 40, of the cam members are urged radially outwardly by springs 49. The cam members 40 are releasably movable radially inwardly against the bias of the springs 49 by a loop spring 86 having its ends connected to a pair of arms 92, 94 mounted on the extension 24, a releasable clip 106 being provided to hold the arms and loop spring in their operative positions. The four cam members 46, 48 can be moved radially outwardly against the bias of their springs 54 by levers 122 movable about pivots to engage the respective arms 42 of the members 46, 48 by axial movement cams 122 on collars 112, 114 which are slidable on an extension 28 of shaft 22 and can be retained in their operative position by screws 113, 115. A bar 128 is adjustable by sliding movement of a rod 130 in a block 132 secured to disc 32 to engage the spectacle frame with the arms 42 extending through the frame and urged to a central position determined by engagement with the arms of the four cam members 46, 48 which are urged radially outwardly against their springs by the levers 122. When the loop spring 86 is released, the remaining cam members are urged outwardly by their springs so that their arms 42 engage the spectacle frame and their other arms 43 then act as a cam for engagement by a follower J of the lens grinding machine. The cam members are clamped in position by a friction member 66 carried by a plate 62 which is urged towards the disc 32 by screws 82 so that the friction member engages projections 68 on the cam members. The cam members may be irregularly spaced around the disc and the biasmeans may be pneumatic, hydraulic or electrical.
Patent GB-1372315-A (GB)
Title: Edible capsules
IPC: A23L1/00
Filed: 1971-12-01
Abstract: 1372315 Making edible capsules NESTLE SA 1 Dec 1971 [14 Jan 1971] 55686/71 Heading B5A [Also in Division A2] Edible capsules for use in confectionery comprise a continuous envelope of hydrophobic material enclosing a hydrophilic liquid, the hydrophobic material being composed of at least one fat, e.g. a vegetable fat such as a composition based on cocoa butter, and at least one plastifying agent, e.g. inositol-phosphatide. The enclosed liquid may be a syrup or a liqueur. The envelope may be coated with a thin, impermeable layer of an edible material, e.g. selected from fatty acids, alkanols, waxes, edible polymers, to prevent evaporation of the liquid filling. The capsules may be mixed with a chocolate mass before the latter is moulded into a confectionery article. Apparatus for making the capsules comprises a nozzle 11 to which the filling liquid is supplied by a variable speed pump 23, a concentric discharge tube 16 surrounding the nozzle and through which the encapsulating material is fed by a variable speed pump 24, a heating jacket surrounding this tube, and a rotary drum 2 cooled by refrigerant circulated by conduits 5, 6. Drops of filling liquid leaving the nozzle 11 are enclosed by encapsulating material flowing down the outside of the nozzle, and the encapsulation is completed by surface tension as the drops leave the nozzle. The drops are then cooled by contact with the drum 2 from which they are removed by a scraper (not shown) near the bottom of the drum. The nozzle and drum are enclosed in a chamber to which dry gas, e.g. air, is supplied by a conduit 7.
Patent GB-1149794-A (GB)
Title: Photographic silver halide colour development
Inventor: COHEN DAVID LIONEL
IPC: G03C7/413
Filed: 1966-12-14
Abstract: 1,149,794. Photographic silver halide colour developers. ILFORD Ltd. Dec.13, 1967 [Dec.14, 1966], No.56035/66. Heading G2C. A photographic silver halide colour developer contains as colour developing agents an N:N- dialkyl-p-phenylene diamine developing agent and a compound of the formula:- where R 1  and R 2  are each hydrogen, methyl or methoxy. The N:N-dialkyl-p-phenylene diamine developing agent may be substituted in the phenylene ring with methyl groups and the N- alkyl groups may be substituted.
Patent GB-1414424-A (GB)
Title: Bisphenol derivative
IPC: C07C45/71
Filed: 1973-05-25
Abstract: 1414424 Dipotassium salt of bis-(4-hydroxyphenyl) ketone IMPERIAL CHEMICAL INDUSTRIES Ltd 2 May 1974 [25 May 1973 (2) 22 June 1973 12 Oct 1973 20 Dec 1973 14 March 1974] 56213/74 56214/74 56215/74 56216/74 56217/74 and 56218/74 Heading C2C [Also in Division C3] The invention comprises a hydrated dipotassium salt of bis-(4-hydroxyphenyl)-ketone. The salt preferably has a particle size of less than 1 mm. The salt may be made by reaction of potassium hydroxide with bis-(4-hydroxyphenyl)-ketone. The hydrated potassium salt may be dehydrated by heating in the presence of an aromatic sulphone of the formula wherein Y is a direct link, an oxygen atom, or two hydrogen atoms (one attached to each benzene ring), and Z and Z<SP>1</SP> are selected from hydrogen atoms and phenyl groups and may be the same or different, at a temperature above 150‹ C.
Patent GB-1446899-A (GB)
Title: Colour picture tubes
IPC: H01J9/227
Filed: 1973-12-04
Abstract: 1446899 Luminescent screens HITACHI Ltd 4 Dec 1973 [4 Dec 1972] 56248/73 Heading H1D Exposure apparatus for forming a colour tube fluorescent screen includes a synthetic resin (e.g. acrylic resin), correction lens 5 with means 7 to eliminate u.v. rays of short wavelength (e.g. <320 mÁ) that deteriorate the light transmissibility characteristic of the correction lens. Elimination may be by a plate of white or blue glass, conventional glass coated with a u.v. absorber, e.g. derivatives of an ester of salicyclie acid, a white glass collimator which also provides a point light source, or light source cooling means impregnated with an absorption agent. Cross-sectional uniformity of the intensity may be improved by a graded filter. Fig. 4 (not shown) includes u.v. source (20), collimator (21), and air or water cooling member (22). Collimator (21) may be quartz glass with a u.v. absorber in member (22) (e.g. an ester as above) or a glass absorbing short wavelength u.v.
Patent GB-1197628-A (GB)
Title: Nozzle for Agglomerating Powders
IPC: A23P10/22
Filed: 1967-12-14
Abstract: 1,197,628. Agglomerating food powders. NESTLE'S PRODUCTS Ltd. 14 Dec., 1967 [30 Dec., 1966], No. 56818/67 Heading A2E. [Also in Divisions B1-2 and B5] In apparatus for agglomerating a powder (especially food products such as tea, coffee, milk, and baby food) the powder is projected in a divergent stream from the tubular nozzle 9, and saturated steam or a mixture of steam and water are projected in conical containers from the outer coaxial annular nozzle 10 (the lip of which is slightly set back), and from the downstream annular wing nozzle 11, to impinge on the outside and inside respectively of the powder stream. The distance between the nozzles 9, 11 may be adjustable.
Patent GB-1145460-A (GB)
Title: Improvements in and relating to flexible couplings
IPC: F16D3/56
Filed: 1967-12-15
Abstract: 1,145,460. Universal joints. MASCHINENFABRIK STROMAG G.m.b.H. 15 Dec., 1967 [14 June, 1967], No. 57134/67. Heading F2U. A flexible coupling comprises a flexible tube 4 having facial teeth engaging, with radial and axial play but not peripheral play, in apertures 3 in rings 2, 2<SP>1</SP> bolted to hub flanges or in apertures in the hub flanges. The tube is split longitudinally at 6 and is embraced by a split ring 5.
Patent GB-1494479-A (GB)
Title: Additives to slag formation in steelmaking furnaces
IPC: C21C5/36
Filed: 1973-12-12
Abstract: 1494479 Flux for steelmaking FOSECO INTERNATIONAL Ltd 14 Nov 1974 [12 Dec 1973] 57604/73 Headings C7D and C7M A flux used in steel making comprises more than 30 wt. per cent Al 2 O 3  mixed with iron oxide and manganese oxide and has a melting point less than 1600C. The flux may also contain MgO and TiO 2  and preferably comprises between 30 and 70% iron oxide, manganese oxide, MgO, TiO 2  with the remainder between 70 and 30% being Al 2 O 3 . Up to 20% CaF 2  may be added. The Al 2 O 3  is added as pit solids viz. a by product formed in Al production and containing 50-80% Al 2 O 3 , the iron oxide as mill scale, TiO 2  as ilmenite and manganese oxide as manganese ore. The flux is preferably mixed with lime in a weight ratio of 1:5 to 1:15 and granulated, tabletted or briquetted prior to addition to the steel melt. The flux facilitates the rapid dissolution of lime in the slag to form a highly fluid basic slag with improved S and P removal.
Patent GB-1163640-A (GB)
Title: Fasteners for Driving into Hard Receiving Materials.
IPC: C22C38/18
Filed: 1967-12-20
Abstract: 1,163,640. Steel pins or nails. HILTI A. G. Dec.20, 1967 [Jan.23, 1967], No.57844/67. Heading C7A. Pins, nails and other fasteners for driving into iron, steel or concrete are made from a steel comprising:- C 0À5 - 0À8% Cr 0À5 - 1-2% Mn 0À5 - 1À2% Si 0À7 - 2% P not more than 0À035% S not more than 0À035% Mo up to 0À5% V up to 0À5% the balance, apart from incidental impurities, being iron and having a predominantly bainitic structure and a hardness of 55-58RC. The alloy is heated at 850-950 ‹C. for 10-30 minutes, rapidly cooled to 200-280‹C. where it is isothermally treated for 30-120 minutes and then cooled to room temperature.
Patent GB-1407160-A (GB)
Title: Apparatus for inspecting and treating the internal bores of inacessible conduits
IPC: F16L55/18
Filed: 1973-12-13
Abstract: 1407160 Inspecting pipes SIEMENS AG 13 Dec 1973 [22 Dec 1972] 57879/73 Heading G1S [Also in Division F2] Apparatus for inspecting and/or treating the bore of a conduit, such as a conduit 6, of heat exchanger apparatus for a nuclear power reactor, includes an elongate flexible conveyer member 11 for carrying an inspection and/or treating tool or device (not shown) into the conduit 6, which conveyer member 11 is supported for axial movement within a flexible guide tube 10 by means of rolling elements disposed within the guide tube, one end of the guide tube 10 being connectable to the conduit 6. As described the conveyer member consists of a flexible tube 11 having supporting elements 19 evenly spaced along its length. Each supporting element 19 carries a set of rollers 18 e.g. four rollers 18 arranged at 90 degrees intervals around the tube 11 or three rollers arranged at 120 degrees intervals. The guide tube 10 may have internal or external grooves (not shown) to increase its flexibility. When the guide tube 10 has an internal helical groove the supporting elements 19 carry pairs of longitudinally spaced rollers 18, the spacing between each pair of rollers being a non-integer multiple of the pitch of the groove. The apparatus may include drive means 14 for moving the conveyer tube 11 along the guide tube 10 e.g. the drive means 14 may include a toothed wheel which engages an associated toothed system on the external surface of the conveyer tube 11 and/or on the supporting elements 19. In use the guide tube 10, which has approximately the same internal diameter as that of the conduit 6, is connected to the conduit 6 e.g. by a coupling 12, and the drive means 14 is operated to carry the inspection and/or treating tool or device, which is carried by one end of the conveyer tube 11, into the conduit 6. Examples of devices which can be carried by the conveyer tube 11 are optical devices for inspecting the tube, a fibre optic cable being disposed within the tube 11; a probe whose cables extend within the tube 11; a camera; or repair tools, such as a device for sealing a plug within the conduit.
Patent GB-1221527-A (GB)
Title: A process of treating jute for imparting improved light fastness
Inventor: GUPTA ANIL BHUSAN SEN
IPC: D06L4/30
Filed: 1967-12-21
Abstract: 1,221,527. Treating lignocellulosic fibres. INDIAN JUTE INDUSTRIES' RESEARCH ASSOCIATION. 12 March, 1968 [21 Dec, 1967]. No. 58130/67. Heading D1P. Jute and other lignocellulosic fibres, e.g. Kenaf, hemp, aloe and sisal, alone or in admixture with other cellulosic fibres in the form of fibre, yarn or fabric, are given improved light fastness and surface hairiness is removed by treating them prior to bleaching in a first step with either an unbuffered acidified aqueous solution of a hypochlorite having a pH of 6 and containing 5-10% available chlorine based on the weight of the fibres for such a period that allows the fibres to consume 90-96% of the available chlorine, or moist chlorine gas or an aqueous chlorine solution for a period of contact of 3-10 minutes, and in a second step extracting them for a period of 5-20 minutes with an aqueous solution of sodium sulphite or for a period of 15 minutes with an aqueous solution of sodium hydroxide, trisodium phosphate or tetrasodium pyrophosphate, the solution in the case of sodium sulphite containing 2.5-10% thereof based on the weight of the fibres and in the case of the remaining compounds specified containing 5-10% thereof based on the weight of the fibres. The first step may be carried out at 20-40‹C. and the second step at 60-85‹C. The fibres may subsequently be bleached using an alkaline hydrogen peroxide solution which may contain sodium silicate and trisodium phosphate, or an alkaline sodiumhypochlorite solution.
Patent GB-1451895-A (GB)
Title: Device for opening leaf binders of the castellated type
IPC: B42B5/10
Filed: 1972-12-16
Abstract: 1451895 Sheet transfer devices J F FOSS and D M FOSS 7 Dec 1973 [16 Dec 1972] 58224/72 Heading B6E  A device for opening the rings of a castellated loose-leaf binder is made from a length of wire and comprises a pair of bored members forming a central portion 16 which terminates at one end in a tapered portion 14 and at the other end in a handle 15. The central portion members assume a parallel disposition shown in their inserted state, the tapered portion 14 facilitating insertion of the device into the rings and progressive opening thereof whilst the handle 15 prevents rolling of the binder.