baber/WOPTO huggingface dataset:
Patent GB-1331029-A (GB)
Title: 6-heterocyclic substituted penicillins
IPC: C07D499/58
Filed: 1972-08-10
Abstract: 1331029 6α-Amino and α-hydroxy heterocyclic acetamido penicillins SMITH KLINE & FRENCH LABORATORIES 10 Aug 1972 [13 Aug 1971] 37299/72 Heading C2A Novel 6α-amino or α-hydroxy heterocyclic acetamido-penicillins having the formula wherein Het is a 5- or 6-membered ring containing carbon and at least 2 hetero atoms selected from O, N and S; A is OH or NH 2 ; and M is H or a pharmaceutically acceptable cation such as an alkali metal or an organic ammonium ion; with the proviso that when A is NH 2 , Het is not isothiazolyl; are prepared by acylating the amino group of 6-aminopenicillanic acid or a salt, ester or other derivative thereof with the appropriate heterocyclic glycine or heterocyclic glycolic acid or activated derivatives thereof. The α-amino group of the glycine and the α- hydroxy of the glycolic acid are preferably blocked before the reaction. The heterocyclic group may be thiazolyl, oxazolyl, isothiazolyl, isoxazolyl, thiadiazolyl, oxadiazolyl, imidazolyl, tetrazolyl, triazolyl, pyrazolyl, pyrazinyl, pyrimidinyl, pyridazinyl or triazinyl, or an alkylsubstituted derivative thereof. The penicillins of Formula I have antibacterial activity against Gram-positive and -negative bacteria and may be administered orally or by injection.
Patent GB-1167927-A (GB)
Title: An Improved Pneumatic Conveyor, e.g. for Concrete.
IPC: B65G53/12
Filed: 1967-08-14
Abstract: 1,167,927. Mixing apparatus. PUTZMEISTER-WERK MASCHINENFABRIK G.m.b.H. 14 Aug., 1967 [12 Aug., 1966], No. 37328/67. Heading B1C. [Also in Division B8] Concrete is aerated in a tank 1 to facilitate its movement through a delivery pipe 13. The tank has mixing blades 5 and feeding blades 6, on the same or a different shaft. The function of the feeding blades is to direct the concrete to the outlet 3, and a screw could alternatively be used. Air is introduced at 7 near the feeding blades and the outlet and also at 8 to pressurise the tank to force the concrete through the delivery pipe, and also at 14 to aerate the concrete further. The air supply rates are preferably kept constant, for example by the use of pressure regulating valves, or by connecting the three air inlets to separate cylinders of a multi-cylinder compressor. The flow of concrete may be varied by varying the amount of air introduced at 14. The operation of the apparatus is stopped when the tank is nearly empty, as detected by a weight sensitive switch 10 or by sensing the reduced driving torque, to prevent loss of air and the dangerous ejection of the last plug of concrete.
Patent GB-779167-A (GB)
Title: Electronic fluorescent illuminating lamp
IPC: H01J63/00
Filed: 1954-12-24
Abstract: 779,167. Fluorescent discharge lamps. SEBEL SOC. ANON. Dec. 24, 1954 [Jan. 16, 1954], No. 37415/54. Addition to 749,448 [Group XL(c)]. Drawings to Specification. Class 39(1). In an electronic fluorescent lamp as claimed in the parent Specification the locus of the intersections of the electron trajectories is near to and matches the shape of the anode. This can be achieved by (a) special shaping of the cathode and/or grids, (b) by adding one or more further grids (c) by special shaping and positioning of the anode. The intersections of the electron trajectories can be just in front of or just behind the anode surface, this distance being limited by the object that the surface of the anode is uniformly illuminated. The crossing of the electron paths is due to the focusing action of the grid adjacent to the cathode. Further electrodes can be added to increase the distance of the intersections of the electron paths from the cathode. The focusing action, potential curves and electrode shapes are illustrated in the drawings (not shown).
Patent GB-828455-A (GB)
Title: Improvements in apparatus for opening and mixing textile fibrous material
Inventor: HUNTER WILLIAM ALDRED
IPC: D01G9/00
Filed: 1956-12-07
Abstract: 828,455. Opening and blending fibres. T. M. M. (RESEARCH) Ltd. Dec. 5, 1957 [Dec. 7, 1956], No. 37422/56. Classes 120(1) and 120(3) Fibre is fed by a conveyer A to second conveyer C where it accumulates in a chamber E to a level controlled by a shutter F. An inclined spiked lattice G, served by a stripper comb R and stripper brush J, delivers fibre from chamber E into a chamber H in which it is deposited on a conveyer K as a sheet which is presented by a roller and pedal feed mechanism M to a rotary cylinder N closely covered with spikes or teeth. Instead of conveyer K, a gravity feed trunk, adapted to preserve a constant volume of material, may receive fibre from lattice G and feed the mechanism M through an outlet at the base. Fibre tufts are removed from cylinder N by a stripper brush P and conveyed into a pneumatic outlet duct Q. Cylinder N may consist of a resin-bonded paper tube in the surface of which are fixed spikes or pins, two rows of which may be reversed so as to clear the stripping brush P. Fibres may be blended by feeding different ingredients, in the desired proportions, side by side or in superposed layers on to conveyer A. Alternatively, a battery of openers as described, disposed in parallel and each fedwith one or more ingredients, may deliver into a common outlet duct Q; the desired proportions of mix may be achieved by adjusting the relative rates of delivery of the mechanisms M of the respective machines.
Patent GB-980307-A (GB)
Title: Improvements in or relating to cords for use as reinforcement in flexible structures
IPC: B60C9/00
Filed: 1963-09-24
Abstract: High fatigue-resistant yarn or cord intended as reinforcement for resilient articles and fabrics such as rubber tyres (see Division B7) belts, and expansible springs, comprises a plurality of plied and twisted continuous filaments e.g. multifilament yarns, having continuous axially extending holes.  The hollow filaments may be of nylon-6 or nylon-66.  The yarn &c. is hot-stretched and rubber latex-dipped prior to incorporation in the article &c.
Patent GB-1277218-A (GB)
Title: Microcellular foams having a low glass transition temperature
IPC: C08G18/22
Filed: 1969-07-25
Abstract: 1277218 Polyurethane foams DAVIDSON RUBBER CO Inc 25 July 1969 [16 Aug 1968 3 June 1969] 37485/69 Headings C3C and C3R Polyurethane foams are produced from a formulation comprising amixture of aprepolymer having free NCO groups, and a catalyst system, the prepolymer comprising a reaction product of a dihydroxy polyol produced by reacting an organic epoxide with an organic compound containing two active hydrogens and a toluene diisocyanate and the catalyst system comprising a polyol as defined above, a blowing agent, an organometallic catalyst, an aromatic amine of the formula wherein n has an average value of 0À1 to 0À3, and a hydroxyl compound which is N,N-di(2- hydroxypropyl)aniline an aliphatic diol or an aromatic diol. The prepolymer is suitably prepared from a polyol having a M.W. of about 1000. The polyol of the catalyst system suitably has a M.W. of about 2000. It is preferred to use the aromatic amine in quantities to provide an -NH 2  to -OH ratio of 0À5 to 1À0. Suitable aliphatic and aromatic diols are 1,4-butane diol, and bis-phenol derivatives respectively especially bis-phenol-propylene oxide reaction products. Stannous octoate and lead octoate are the preferred catalysts.
Patent GB-1211589-A (GB)
Title: Enantiomer isolation process
Inventor: LEIGH THOMAS
IPC: C07B57/00
Filed: 1968-08-06
Abstract: 1,211,589. Enantiomer isolation. IMPERIAL CHEMICAL INDUSTRIES Ltd. 22 May, 1969 [6 Aug., 1968], No. 37523/68. Heading C2C. An enantiomer present in excess in a partially resolved mixture is isolated in a substantially optically pure form by interacting the mixture with a crystallization solvent in the presence of a solubilizing agent, and then recovering the enantiomer from the solution obtained. The process may be applied to one 1-alkylamino-3- aryloxy - 2 - propanols, 6 - substituted-2,3,5,6- tetrahydroimidazo - (2,1-b] - thiazoles, α- methylbenzylamine amides, α - ethylphenylacetic acid amides and halogenated biphenyloxypropionic acids.
Patent GB-1444275-A (GB)
Title: Web feeding apparatus
IPC: B65H23/06
Filed: 1973-08-08
Abstract: 1444275 Web feeding METAL BOX Ltd 15 July 1974 [8 Aug 1973] 37642/73 Heading B8R A web feeding apparatus associated with a machine applying lids to tins comprises a first pair of feed rollers 9, 13 each rotated at a predetermined constant velocity and operative alternatively to feed the web at two different rates which are respectively lower and higher than the length of web fed intermittently by third and fourth feed rollers 19, 24, the feed rollers being associated with pressure rollers 10, 14, 19, 23 which are operable by fluid or electromagnetic means 21, 22, 29, 30 to selectively connect the pressure rollers to the feed rollers. In operation the feed and pressure rollers 9, 10 feed the web past a guide 16, 17 applying a light tension to the web and a strip brake 11, 12 to form a loop 15 which is allowed to decrease whilst the web is being fed intermittently by the feed and pressure rollers 19, 20; 23, 24 operated synchronously to displace a predetermined length of the web past a blank cutting die 34 35, until the decreased web loop triggers a switch 26 forming a sensor to trip the pressure roller 10 and release the pressure 14 for cooperation with the feed roller 13 for feeding the web at a faster rate to allow the web loop to increase until its size reaches a predetermined value sensed by a detector which trips the pressure roller 14 and releases pressure roller 10. Meanwhile the feed and pressure rollers 19, 20; 23, 24 driven by a half revolution clutch drive advance the web cyclically and intermittently past the dies 33, 34. The web is kept taut at the dies by brakes 37, 38. Web feed by all feed rollers is arrested and all the pressure rollers are tripped in response to the detector 36 sensing absence of a cam at the dies 33, 34.
Patent GB-1008569-A (GB)
Title: Improvements in and relating to foamed polymers
IPC: C08J9/04
Filed: 1964-09-16
Abstract: A foamable thermoplastic composition comprising a mixture of 95 to 35% by weight of virgin foamable polymer and 5 to 65% by weight of foamed recycle polymer is extruded after the recycle polymer has been precompacted to increase its bulk density.  The composition may be extruded as a sheet and in this case one or both surfaces may be chilled by an air blast, air-water mist, water, nitrogen, argon or helium, to produce a non-porous skin integrally united to a porous core.  Polymers which can be used in the process include styrene polymers such as crystal grade polystyrene, high impact polystyrene and mixtures of these, styrene polymers containing at least 50% by weight of styrene, cellulose ethers and esters, homopolymers and interpolymers of monomeric compounds containing the <FORM:1008569/C3/1> grouping, such as olefins, vinyl halides, vinyl esters of carboxylic acids, vinyl ethers, halogenated olefins, unsaturated carboxylic acids and derivatives thereof, interpolymers of the above-mentioned vinylidene monomers with a ,b -unsaturated polycarboxylic acids and derivatives thereof.  Polycarbonates, polyoxymethylene, oxymethylene-alkylene oxide copolymers, polyurethanes, polyethylene terephthalate and nylon are also mentioned.  The recycle polymer is precompacted so that it has a density of at least 65% of the density of the unfoamed polymer. Specification 1,008,568 is referred to.
Patent GB-920905-A (GB)
Title: Improvements in and relating to purification of phenol
IPC: C07C39/04
Filed: 1960-11-03
Abstract: A process for the purification of phenol, derived from cumene by oxidation followed by cleavage of the resulting hydroperoxide, and containing colour-forming impurities, comprises, after removal of unconverted reactants, acetone, and cleavage catalyst, heating the impure phenol with 0.025 to 0.25 pound moles of sodium or potassium hydroxide per 1,000 pounds of phenol for 16-48 hours at 95-170 DEG C., separating the phenol by distillation from the resultant mixture, heating the phenol distillate with 0.1 to 1.0% ferric chloride for 8 hours to 14 days at a temperature between the m.p. of the phenol and 80 DEG C., and separating the purified phenol by distillation, the water content of the mixture of phenol and ferric chloride being less than 1.0% by weight.  The treatment with alkali metal hydroxide is preferably effected using caustic soda, as the dry substance or as a strong aqueous solution, at a concentration of 0.4% by weight.  This treatment may be effected in the presence of iron e.g. by heating in the presence of iron powder or by working in a mild steel vessel. After treatment of the phenol with ferric chloride, about 3 moles of sodium or potassium hydroxide per mole of chloride may be added to the phenol before the subsequent distillation so as to reduce the risk of corrosion of plant equipment.  Specification 647,063 is referred to.
Patent GB-1060786-A (GB)
Title: Process for the preparation of lactams
IPC: C07D281/16
Filed: 1964-09-16
Abstract: Lactams of the general formula <FORM:1060786/C2/1> wherein X represents an oxygen or sulphur atom or a methylene or ethylene group, which methylene or ethylene group may be substituted by one or more inert substituents, and wherein one or both benzene nuclei may be substituted by one or more inert substituents, are prepared by subjecting isocyanates of the general formula <FORM:1060786/C2/2> wherein X has the above meaning and wherein one or both benzene nuclei may be substituted in any position except the 2 or 6 position of the right-hand ring as described hereinabove, to cyclization by treatment with a Friedel-Crafts type catalyst.  The cyclization is preferably effected at 80 DEG  to 160 DEG  C. in an inert solvent having a boiling point in the range of 80 DEG  to 160 DEG  C. and with anhydrous aluminium chloride as the catalyst.  The isocyanate reactants may be obtained from the corresponding amines by treatment with phosgene preferably using toluene as solvent.
Patent GB-858600-A (GB)
Title: Improvements in drawing compasses
IPC: B43L9/24
Filed: 1958-11-26
Abstract: 858,600. Compasses and dividers. BROADHURST, C. J. Oct. 1, 1959 [Nov. 26, 1958], No. 38057/58. Class 97(3) A drawing compass of the type in which a boss 11 secured to one arm 12 carries an ordinary pencil, is provided with a divider attachment in the form of a pin 15 secured to a body 16 having a keyhole slot 17. On rotating the pin 15 downwardly from the position shown dotted in Fig. 1, the body 16 is moved upwardly so that the narrow sides of the slot 17 engage channels 14 provided on the boss 11, lugs 18 on the body 16 engaging the boss 11 to retain it in position.
Patent GB-821130-A (GB)
Title: Improved bearing arrangement
IPC: F16H13/02
Filed: 1957-12-09
Abstract: 821,130. Bearings. ROESCH, A. Dec. 9, 1957 [Dec. 11, 1956], No. 38152/57. Class 12 (1). A bearing arrangement for supporting three rollers 8, 9, 10 for a rotary shaft 4 comprises a pair of axially-spaced supporting-members 11 each having a main portion 21 with two bearing openings 12, 13 for the rollers 8, 9 and a yielding annular part 22 which supports the third roller 10 and is connected to the main portion 21 by two yielding bridge portions 26. The latter are symmetrical to a second plane 28 passing through the axis of the annular part 22 perpendicular to the plane 24 and equidistant from the axes of the two bearing openings 12, 13 so that the shaft, when rotatably supported between the rollers 8, 9, 10 with its axis located in the second plane 28, is urged into frictional engagement with the rollers. The supporting members 11 are mounted within a tubular support 1 which is closed by end-plates 2, 3, and is preferably precision cast. The rollers 8, 9, 10 have flanges 5, 6, 7 which engage the shaft, the ends of the rollers which project through corresponding openings in the end-plate 3, carrying pulleys 17, 18, 19 which are embraced by a driving-belt, not shown. The two supporting members are secured against rotating movement in the tubular member 1, e.g. by screws 16, which project from slots 15 in the supporting plates 11, one of the latter preferably being movable in the axial direction to compensate for axial expansion. To increase the resiliency of the bridge portions 26, which have the effect of leaf springs, they may be corrugated as at 29. A filling 30, e.g. of oil-resistant rubber vulcanized to the supporting members 11, preferably fills the space between the supporting members 11 and the tubular support 1. In a modification, in order to render the pressure between the shaft 4 and the rollers independent of thermal expansion during operation, L-shaped bridge portions, which may have corrugations in their arms, are used. In a further modification the bridge portions 26 are inclined to extend in a substantially radial direction with respect to the annular part 22.
Patent GB-1099453-A (GB)
Title: Magnetic logic devices
Inventor: MORRIS DAVID JOSEPH
IPC: H03K19/166
Filed: 1963-09-27
Abstract: 1,099,453. Circuits employing bi-stable magnetic elements. ENGLISH ELECTRIC CO. Ltd. Dec. 23, 1964 [Sept. 27, 1963], No. 38160/63. Heading H3B. In a laddie a prime winding is associated with the output aperture and immediately preceding aperture so that when energized after reset and set pulses have been applied to reset and set windings respectively, flux changes occur round the output aperture and induce an output signal in an output winding. After the laddic 10, Fig. 1, has been placed in a reset state by applying a pulse to reset winding 31 so that fluxes are set round apertures 11, 13, 15 in a clockwise direction, a set pulse is applied to set winding 28 to reverse half the flux in the crossmember 19. This flux takes the shortest continuous flux path and if hold windings 26, 27 are energized this path will include cross-member 24 and half the flux through this cross-member is reversed. A prime pulse now to winding 29 sets up a flux around aperture 16, and a subsequent reset pulse reduces the flux in limb 25 to zero again. Every time the flux changes in the limb 25 an output pulse is induced in output winding 30. In the arrangement of Fig. 2 cross member 124 consists of two minor cross-sections 124a, 124b of half the cross-section of the other cross members. The device functions in a manner similar to that of Fig. 1 except that when the device is in a reset condition and both hold windings 126, 127 are energized the application of the set pulse reverses all the flux in the minor cross-member 124a. A subsequent prime pulse signal will then reverse the flux in both cross members 124a, 124b. The next reset pulse will then reverse the flux through cross member 124b again, to a reset condition, to produce an output on winding 130 which influences the flux in a magnetic core 132. More than one hold winding may be wound on each cross member so that complex logical functions may be performed, and the input signals may be derived from other laddies or multiaperture cores. Cross member 119 may be divided into two minor cross members.
Patent GB-876399-A (GB)
Title: Improvements in or relating to fuel elements for nuclear reactors
IPC: G21C21/16
Filed: 1957-12-11
Abstract: A nuclear fuel element comprises a porous skeleton body of uranium or a uranium alloy impregnated with a light metal or a light metal alloy having a melting point lower than that of the uranium or uranium alloy.  Alloys of uranium with titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, or tungsten may be impregnated.  In one example uranium turnings are loosely pressed ogether to form a rod having a void ratio of about 50% and this compacted rod is dipped into an aluminium bath or aluminium lumps are added to the compact followed by heating above the melting point of aluminium thus filling the pores entirely with aluminium.  The bar is then pushed into a tube of zirconium or columbium and the whole element heated for a short time to melt the aluminium.  In a second example shavings of uraniummolybdenum or uranium-tungsten alloy are filled into tubes of zirconium, columbium, tantalum, or molybdenum and a quantity of magnesium-beryllium-aluminium alloy is placed on top and the whole heated in an argon atmosphere to about 900 DEG C. In a third example uranium alloy in powder or chip form is pressed into a tube or rod shape and presintered to about 800 DEG C.  This tube or rod is then repeatedly dipped into an aluminium bath until an outer and inner skin of pure aluminium is formed.
Patent GB-905413-A (GB)
Title: Improvements in or relating to semi-conductor devices
IPC: H01L29/08
Filed: 1958-11-28
Abstract: 905,413. Semi-conductor devices. COMPAGNIE GENERALE D'ELECTRICITE. Nov. 28, 1958 [Nov. 29, 1957], No. 38520/58. Class 37. A switching device comprises a semi-conductor body having a base layer of intrinsic or near intrinsic material, emitter and collector layers on either side of the base layer and an auxiliary emitter layer of opposite conductivity type to the collector adjacent the collector, the emitter and collector zones being less than one tenth the thickness of the base zone, so that carriers injected from the auxiliary emitter diffuse across the collector and penetrate the base to initiate injection from the main emitter. Fig. 4 shows a P-type layer E forming the emitter on N-type base layer B, adjacent P-type collector layer C and N-type auxiliary emitter Ea. The collector-Ea junction is normally biased in the reverse sense but low-voltage source 4 provides for controlled forward biasing of this junction to allow electrons to diffuse through the collector zone to the base zone, which encourages the emission of holes from the main emitter E, thus supplying main emitter-collector current. This increases the forward biasing of the auxiliary emitter junction so that the effect is cumulative providing a low impedance path between the main emitter and the collector. The state of conduction is suppressed when a negative control voltage is applied to the auxiliary emitter. A further auxiliary-emitter layer may be provided adjacent the main emitter to form a symmetrical device which can be controlled from either end with interchange of emitter and collector functions. The semiconductor material may consist of silicon, germanium, InP, InAs, GaSb, GaAs, A1P or AlSb.
Patent GB-1450685-A (GB)
Title: Lubricant testing apparatus
IPC: G01N33/30
Filed: 1973-12-16
Abstract: 1450685 Testing lubricating fluid INTERNATIONAL RESEARCH & DEVELOPMENT CO Ltd 17 March 1975 [16 Dec 1973] 38716/73 Heading G1S It is known that a critical oil film temperature exists above which a lubricant loses its ability to form complete surface films on bearing interfaces and allows metal to metal contact. The present invention determines this temperature and uses it as an indication of the load bearing capacity of the oil under test. The test apparatus comprises, metal test discs 10, 11 which are rotated in the same direction by shafting driven by gearing 25, 26, 27 from a motor driven belt 20, and a vertically movable casing 29 providing bearings for the gear 26 and disc 10, which casing is loaded by weights 31 attached thereto as that the discs 10, 11 press and slip against one another. A test liquid pressure vessel housing 32 is secured to a flange 14 by bolts and contains an electric heater 33. In operation, lubrication oil is ducted into the pressure vessel to immerse the discs 10, 11 which are rotated whilst the temperature of the oil is increased until scuffing of the discs is detected by a microphone, accelerometer or an electrical strain gauge torque meter mounted on the torque tube 19. The oil temperature is measured by a thermocouple at the onset of scuffing.