baber/WOPTO huggingface dataset:
Patent GB-914567-A (GB)
Title: Process for recovering pure yeasts
Inventor: CHAMPAGNAT ALFRED
IPC: C12N1/02
Filed: 1960-08-22
Abstract: Yeasts, in particular those grown in the presence of paraffinic feedstocks as described in Specification 914,568, are recovered from a mixture of yeasts, hydrocarbons and aqueous mineral medium, by adding to the mixture at least 50 p.p.m. (preferably an amount within 0.02 to 0.5% by weight), of a surface-active agent and centrifuging, after vigorous mixing, to obtain a paste comprising yeast and aqueous mineral medium.  The paste is then washed and centrifuged, preferably several times, to remove surface-active agents and mineral salts, before drying and grinding.  The surface-active agent may be non-ionic, e.g. a condensate of oleic acid and ethylene oxide, anionic, e.g. a sodium alkyl sulphate, or cationic, e.g. stearyl-trimethyl ammonium chloride, and the contaminated yeast mixture before centrifuging is adjusted to a pH within the range 7 to 9 and a temperature of from 30 DEG  to 99 DEG  C., preferably 60 DEG C.
Patent GB-1308650-A (GB)
Title: Cyclopropane carboxylic acid derivatives
IPC: C07D207/27
Filed: 1970-06-15
Abstract: 1308650 Cyclopropane carboxylic acid derivatives; phosphonium compounds ROUSSEL UCLAF 15 June 1970 [13 June 1969] 28963/70 Headings C2C and C2P Novel cyclopropane compounds of the formula in which X is oxygen, sulphur or -NH-, R is hydrogen, C 1-6  alkyl, a group (where Y is an aryl group) or a group (where Z is an alkenyl or alkadienyl group), and potassium salts and acid chlorides thereof, are prepared by reacting 2-formyl-3,3-dimethylcyclopropane-1-carboxylic acid with a phosphonium salt of the formula in the presence of a base or with a phosphorane of the formula and, if desired, converting the free acid so obtained to the potassium salt, acid chloride or ester by conventional methods. The products may be obtained in the cis or trans form or the optically active forms thereof. Examples describe the preparation of K salts, acid chlorides, 5-benzylfuryl-3- and allethrolonyl esters and the [(2-oxo-3(oxa or thia or imino) cyclopentylidene) - methyl] - 3,3 - dimethylcyclopropane - 1 - carboxylio acids. The compounds may be used in insecticidal compositions. (2 - Pyrrolidon - 3 - yl)triphenyl phosphonium bromide is obtained by reaction of 3-bromo-2- pyrrolidone with triphenylphospine and may be converted to 2-pyrrolidon-3-yl triphenylphosphorane by treatment with NaOH.
Patent GB-691215-A (GB)
Title: Improvements in or relating to suspensions for water tube boiler drums or the like
IPC: F22B37/20
Filed: 1950-11-28
Abstract: 691,215. Supporting steam boiler drums. THOMPSON WATER TUBE BOILERS, Ltd., J., and STEWARD, G. H. Nov. 28, 1951 [Nov. 28, 1950], No. 29098/50. Class 123 (ii) [Also in Group XXVIII] A supporting sling 1 for, for example, the drum 2 of a water-tube boiler comprises a plurality of flexible steel wire, &c. strands preferably woven into a rope or ropes 3, say three as shown. The ends of the ropes are each spliced to a solid forged thimble 5 which is engaged on a pin 6 mounted between the arms of a fork 7, the stem of the latter being provided with a nut 11 for supporting it from a bearing plate 9 on an overhead structure 10. The ropes may be positioned longitudinally along the drum by a plurality of flats 13, or a grooved metal pad, welded to the underside of the drum.
Patent GB-654755-A (GB)
Title: Adjusting means for valve gears of internal combustion engines
IPC: F01L1/20
Filed: 1948-11-10
Abstract: 654,755. Valve-gear. PORSCHE KONSTRUKTIONEN-GES. Nov. 10, 1948, Nos. 29200 and 29201. Convention dates, Nov. 10, 1947 and March 13, 1948. [Class 7(vi)] A valve lever 2<SP>1</SP> pivoted at 3' is split longitudinally at 7<SP>1</SP> and the amount by which the resilient arms 8<SP>1</SP>, 9<SP>1</SP>, are forced apart is adjusted by an expanding screw 13<SP>1</SP> to adjust the valve clearance. The screw 13<SP>1</SP> is shaped at 22<SP>1</SP> to fit an adjusting tool, and an enlarged part 16<SP>1</SP> forces the arms 8<SP>1</SP>, 9<SP>1</SP> apart, the screwed end 15<SP>1</SP> extending into the bore of the pivot pin 3' and co-operating with a groove 21 in the pin to prevent lateral movement thereof. The part 16<SP>1</SP> is fluted or roughened to maintain the screw 13<SP>1</SP> in its adjusted position. In a modification the axis of the expanding screw is radial to the axis of the pin 3<SP>1</SP> and a lock-nut secures the screw in its adjusted position.
Patent GB-603899-A (GB)
Title: Improvements in or relating to stereoscopes
IPC: G02B27/22
Filed: 1945-11-05
Abstract: 603,899. Stereoscopes. WILMAN, C. W. Nov. 5, 1945, Nos. 29271/45 and 17054/46. [Class 97 (i)] Each of a pair of stereoscopic pictures is positioned in the viewing instrument by gravitational engagement of two adjacent edges against fixed supports. As shown in Fig. 1 and 3, the stereoscope comprises a troughshaped member having a side 3 holding mirrors 8, 9 in which the pictures 1, 2 are viewed, the latter being held by gravity within the trough and clamped against the end walls 5, 6 by slides 15, 16 acting also as light reflectors. The pictures 1, 2 are slotted at their edges, the slots 11 engaging ends 12, Fig. 3, to prevent incorrect location. Alternatively, the bottom of the trough may be open and the pictures project therethrough, corresponding corners of the pictures engaging the supporting surface of the instrument for correct location. Means, such as markings are provided to prevent the slots affecting the view. The planes of pictures 1, 2 may -be parallel or inclined. Several pictures may be held together by rings or mounted on bands carried by rulers in frames which can be placed in the instrument together with an illuminating device. Fig. 5 shows a folding stereoscope comprising trays 20, 21 hinged at 23 and bearing arms 32, 33 for the pictures 1, 2 and plates 23, 24 hinged at 25, 26 and 27, supporting the viewing mirrors 8, 9 and having extensions 28 acting as feet to support the instrument in the open position. The arms 32, 33 may be omitted and the pictures located by engagement of a pin with a slot thereon.
Patent GB-648253-A (GB)
Title: Polymerization of alkylolamides of the acrylic acid series
IPC: C08F2/48
Filed: 1946-10-02
Abstract: N-Disubstituted a -substituted acrylamides in which at least one of the N-substituents is an alkylol group are polymerized in a strongly acidic solution of a strong inorganic acid, e.g. 10 per cent sulphuric acid.  Specified acrylamides have the formula CH2=CR.CONR1R2, where R is methyl, ethyl, propyl, isopropyl, isobutyl, butyl, phenyl, cyclohexyl, benzyl, R1 is -CH2OH, -C2H4OH or C3H6OH and R2 methyl, ethyl, propyl, butyl, methylol, ethanol, propanol, cyclohexyl, phenyl or benzyl. Preferred compounds are N-methyl N-b -ethanol, N-methyl N-propanol and N-diethanol methacrylamides.  Polymerization may be carried out using ultra-violet light or polymerization catalysts, e.g. potassium persulphate, benzoyl peroxide, peracetic acid.  Other acids specified include phosphoric and hydrochloric acids.  Specifications 648,251, 648,252 and U.S.A.  Specification 2,311,548 are referred to.
Patent GB-1429604-A (GB)
Title: Non-volatile semiconductor memory device
IPC: H01L29/792
Filed: 1974-07-03
Abstract: 1429604 Semi-conductor memory device TOKYO SHIBAURA ELECTRIC CO Ltd 3 July 1974 [5 July 1973] 29447/74 Heading H1K A non-volatile memory device comprises an IGFET structure with spaced source and drain regions formed in a surface of a semi-conductor substrate of the opposite type, superposed layers of insulation overlying the space between them, and between the source and/or drain region and the substrate a diffused layer less than 1 Á thick of the same conductivity type as the substrate and a doping of at least 10<SP>17</SP> atoms/c.c. In operation a binary zero is written by applying a negative pulse to the source and/ or drain with respect to the gate to cause avalanching at the respective junction and tunneling of the resulting electrons from the diffused layer through the lower layer of insulation to locations at the interface with the upper layer, where they are trapped. Binary 1 is stored by applying a pulse of opposite polarity causing rejection of the stored electrons to the substrate. The lower layer of insulation may be of uniform thickness or consist of thin and thick layers joining midway between source and drain. Suitable materials are silicon for the substrate, thermal oxide for the lower layer of insulation, silicon nitride, alumina, or alumina-tantalum oxide for the other, and polysilicon, molybdenum, tungsten or aluminium for the gate electrode, the source and drain and intervening layer being diffused with boron and phosphorus either sequentially or, where the construction permits, simultaneously, using the gate electrode as a mask.
Patent GB-189634-A (GB)
Title: Improvements in or connected with lubricating systems and apparatus
IPC: F16N7/12
Filed: 1921-11-05
Abstract: 189,634. Ward, J. T. H. Nov. 5, 1921. Liquid-level, maintaining.-In a lubricator in which oil is fed to a number of outlets by siphon wicks and which is supplied continuously with oil, a constant level is maintained by means of an adjustable overflow device. Excess oil supplied through a regulating valve 16 and channel 15 from a storage tank passes through a channel 17 in a fitting 14 and overflows through holes 19 in a vertically-adjustable tube 18, passing through a nipple 23 and a sight-glass to a drain tank. From the drain tank, oil may be pumped back to the storage tank or direct to the lubricator.
Patent GB-1480138-A (GB)
Title: Transistor memory array
IPC: H01L27/102
Filed: 1974-07-03
Abstract: 1480138 Integrated circuits PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 3 July 1974 [6 July 1973 25 June 1974] 29480/74 Heading H1K [Also in Division H3] Each cell, e.g. 11 of a memory matrix comprises a pair of cross-coupled transistors 111, 112 of one conductivity type having respective collector load transistors 113, 114 of the other conductivity type, at least one of the bases of the cross-coupled transistors being connected via the main current path of a transistor 115 to a bit line B 0 , the bases of transistors 113, 114, 115, and the emitters of transistors 111, 112 being interconnected to a node 117. The circuit is characterized in that the emitters of the load transistors 113, 114 are connected to an associated row selection line X 1 , the bit line B 0  is connected to a column selection circuit Y, and the nodes of all cells are directly interconnected. In the embodiment of Fig. 1 a second bit line B 1  is connected to the base of transistor 112 via a further series transistor 116. In a modification, Fig. 11 (not shown), this second bit line and transistor 116 are omitted and the collector area of transistor 112 is made larger than that of transistor 111. The nodes, e.g. 117 are all coupled to a common current source S1 which normally divides equally between all cells. During write selection the current to the selected cell is made smaller than that to the other cells and vice versa during read selection. The matrix of Fig. 1 may be fabricated as an integrated circuit having the form of Figs. 2, 3 (not shown), Figs. 4, 5, 6, 7 (not shown) or Figs. 8, 9, 10 (not shown) and the matrix of Fig. 11 may be fabricated in the form of Figs. 12, 13 (not shown). In the arrangement described with reference to Figs. 8, 9, 10 (not shown) a lateral transistor having four collectors is utilized as four of the row selection transistors 72. Transistors 97, 94 may also be lateral transistors.
Patent GB-994952-A (GB)
Title: Laminated textile product and method of manufacture same
Inventor: REYNOLDS LINTON COLLIER
IPC: A41D31/02
Filed: 1963-07-25
Abstract: 994,952. Laminates and laminating. RIEGEL TEXTILE CORPORATION. July 25, 1963, No. 29582/63. Drawings to Specification. Heading B5N. An air-permeable, flexible sheet material suitable for garments comprises at least two airpermeable layers, at least one being a textile fabric, the layers being bonded together by spaced spots of thixotropic heat-curable adhesive which penetrate into the layers. The textile fabric may be woven, knitted or non-woven and may be e.g. of cotton; the adjacent layer may be of foam e.g. polyurethane. Textile layers may be applied to both sides of a foam layer. Continuous webs may be united by applying to the surface of one of them a pattern of adhesive spots by means of a perforated hollow drum and doctor blade and passing the webs between rollers followed by an oven to cure the adhesive. A bonding material formulation consists of an acrylic polymer latex, a melamine resin and ammonia.
Patent GB-1306477-A (GB)
Title: Storable bright-drying emulsions
IPC: C09G1/10
Filed: 1971-06-24
Abstract: 1306477 Aqueous polymer emulsions FARBWERKE HOECHST AG 24 June 1971 [26 June 1970] 29652/71 Headings C3P and C3R Water-clear, storable aqueous bright-drying emulsions are obtained by mixing together a water-clear polymer dispersion and an aqueous emulsion having a solids content of from 15 to 20% by weight of an ester of a straight-chain or branched C 16-36  aliphatic monocarboxylic acid and a polyethylene glycol having an average molecular weight of from 5000 to 20,000. The said ester is preferably obtained by reacting 1 mole of the said acid with from 0À75 to 1À1 mole of the said polyethylene glycol, or with from 45 to 350 moles of ethylene oxide, and may be emulsified with water in the presence of N,N- diethylaminoethanol to produce an aqueous wax emulsion. The water-clear polymer dispersion component is suitably obtained by stirring concentrated ammonia to a zinc-cross-linked acrylic copolymer dispersion previously diluted with water, an aqueous ammoniacal solution of a styrene-maleinate resin, dipropylene-glycol monomethylether and dibutoxyethyl phosphate. The bright-drying emulsion may be admixed with further ingredients, viz. alkali-soluble resins, film-forming auxiliaries, plasticizers, antistatic agents, corrosion inhibitors, preservatives, bactericides, dyestuffs and metal salts. Uses.-Floor polishes.
Patent GB-385927-A (GB)
Title: Improvements in the production of fibres or threads from glass, slag and the like meltable materials
IPC: C03B37/05
Filed: 1932-10-24
Abstract: 385,927. Slag wool. NAAMLOOZE VENNOOTSCHAP MAATSCHAPPIJ TOT BEHEER EN EXPLOITATIE VAN OCTROOIEN, 57, Zeckant, The Hague. Oct. 24, 1932, No. 29680. Convention date, Nov. 5, 1931. Addition to 373,932. [Class 22.] Relates to apparatus, described in the parent Specification, for making threads or fibres of glass, slag, or like fusible material, by flowing the molten material from an outlet 2 in a furnace on to the surface of a rapidly rotating disc 4. The glass is thrown outwards by centrifugal force and forms fine fibres which settle around the disc. The present invention consists in surrounding the outlet 2 with an annular nozzle 7 from which a current of air is directed downwards around the rotating disc 4. The current of air forces the fibres continuously downwards and prevents them from rising and interfering with the operation of the apparatus.
Patent GB-713972-A (GB)
Title: Improvements in or relating to roof structures
IPC: E04B7/10
Filed: 1951-12-19
Abstract: 713,972. Roofs; shuttering. SCAFFOLDING (GREAT BRITAIN), Ltd., and JENKINS, R. S. Dec. 4, 1952 [Dec. 19, 1951], No. 29737/51. Classes 20 (2) and 20 (4) A roof capable of being supported solely at points at or near its ends comprises a network of triangulated frames connected at their corners Fig. 2 shows such a network extending over an imaginary surface having a double curvature, whilst Fig. 3 shows a part-cylindrical network and in this case each frame comprises an isosceles triangle of which the base is parallel to the longitudinal axis of the network. The network may also be used as formwork for supporting shuttering for concrete.
Patent GB-222428-A (GB)
Title: Apparatus for transmitting power from prime movers to the running wheels of land vehicles
IPC: B61C9/10
Filed: 1923-11-26
Abstract: 222,428. Vulcan-Werke Hamburg und Stettin Akt.-Ges. Sept. 29, 1923, [Convention date]. Hydraulic transmission apparatus.-In vehicles propelled by a combination of hydraulic and mechanical gearing the latter gear is arranged between separated forward and reverse running elements of the hydraulic gearing. In the arrangement shown, a number of prime movers such as internal-combustion engines 1 drive hydraulic gears, between the elements 2, 3 of which gear wheels 4 are placed. These wheels gear with other wheels 5 driving the axles through coupling rods 7, 11. The engines may be arranged transversely as shown, or longitudinally, and the hydraulic gear may be situated between two sets ot engine cylinders. The gear wheels 5 may drive the axles through flexible shafts, bevel gearing, and crank gear. The supply of liquid to the hydraulic gear may be effected through the free end of the hollow shaft of the gear.
Patent GB-750445-A (GB)
Title: Improvements in or relating to load measuring devices
Inventor: BLICK LEONARD WILLIAM
IPC: G01L1/04
Filed: 1953-10-28
Abstract: 750,445. Electric transducers. BOULTON PAUL AIRCRAFT, Ltd. Dec. 31, 1954 [Oct. 28, 1953], No. 29786/53. Class 40(1) Apparatus for measuring the stress in, e.g. a machine part, comprises a load supporting, hollow, cylindrical, steel body 1 (Fig. 1) having a rod 8 screwed at its upper end to a supporting plate 7 secured in a recess at the top of the cylinder, and with its lower end resting on the short limb 13 of a right-angled lever rotatably secured to another plate 16 in a recess at the bottom of the cylinder, whereby a change in stress causes the rod 8 to move the short limb 13 of the lever by an amount which is amplified in the long limb 14 and produces corresponding movement in the armature 35 of a differential transformer type pick-up 20. Temperature compensation is obtained by using materials with suitably matched expansion coefficients.
Patent GB-660069-A (GB)
Title: Edible crosses, for flour confectionery, and the like
IPC: A21C15/00
Filed: 1949-11-22
Abstract: 660,069. Hot cross buns. SIMMONS, F. D. Feb. 15, 1950 [Nov. 22, 1949], No. 29793/49. Drawings to Specification. Class 28 (i). Edible crosses made from starch or rice paper &c. are used for hot cross buns or other flour confectionery. The cross is softened by moistening and stuck on the buns and baked or stuck on previously baked buns. The cross may be cut or stamped out in one piece. During baking the cross merges into the skin of the bun without appearing to have been added to the bun.
Patent GB-1105446-A (GB)
Title: Improved methods and means for protecting a.c. networks
Inventor: KALKNER BERNHARD
IPC: H02H9/02
Filed: 1965-07-14
Abstract: 1,105,446. Short circuit protection of networks. LICENTIA PATENT-VERWALTUNGS-G.m.b.H. 14 July, 1965, No. 29839/65. Heading H2H. [Also in Division H3] In an arrangement as described in Specification 1,105,444, wherein a transductor is utilized to limit the short circuit current in an A.C. network, where series connected transductor windings are employed, the size of the transductor may be reduced by connecting an ohmic resistance in parallel with each main winding.
Patent GB-340595-A (GB)
Title: Improvements relating to prepayment devices used with telephone instruments
IPC: H04M17/02
Filed: 1929-10-02
Abstract: 340,595. Coin-freed telegraph and telephone apparatus. SIEMENS BROS. & CO., Ltd., Caxton House, Tothill Street, and DUTTON, G. F., 32, The Avenue, Grove Park, both in London. Oct. 2, 1929, No. 29852. [Class 27.] In a telephone device for signalling to the operator at the exchange the insertion of the necessary coins, the latter strike a sounding body which is mechanically connected to the moving electrode of a transmitter which is not used for conversational purposes. As shown in Fig. 1, a coin strikes the gong B and the vibrations are communicated by the thin stiff wire P to the moving electrode E of the transmitter T which is fixed to a block of metal M and protected from extraneous vibrations by flexible material F. The sounding body may also be in the form of a spiral gong or a reed having one end fixed and the other in the path of the coins.
Patent GB-811030-A (GB)
Title: Cleaning and polishing cloth
IPC: A47L13/56
Filed: 1957-09-23
Abstract: 811,030. Cleaning pads. SCHICKEDANZ, G. [trading as VEREINIGTE PAPIERWERKE SCHICKEDANZ & CO.]. Sept. 23, 1957 [Oct. 12, 1956], No. 29882/57. Class 19. A cleaning pad has a sheet-like body provided with a cation-active substance is combined with a sheet-like body provided with an anion-active substance, the bodies being separated by a dielectric. The bodies may be of fleece, cellulose wool, crepe, embossed paper, natural or synthetic fibres or foils. The dielectric may be air or one or more absorbent fibre layers.
Patent GB-602690-A (GB)
Title: A tip for metal cutting and heating burners
IPC: F23D14/54
Filed: 1945-11-09
Abstract: 602,690. Oxyhydrogen and like burners. WHITE, S. H. Nov. 9, 1945, No. 29943. [Class 75(i)] In a burner for metal cutting, heating, or like operation the oxygen and fuel gas mixture is discharged from a mixing chamber 4 through parallel slots or channels 7 in a cylindrical tip 5, carried by a stem 3, the channels being of .01in. width and .025in. to .03in. depth and the flame end of the tip being flush with the end of the casing 1. For heavy work the tip may be of 5/16in. diameter and formed with 28 channels 7. For light work the tip may be of 7/32in. diameter and formed with 20 channels 7.
Patent GB-787250-A (GB)
Title: Improvements relating to apparatus for dispensing a spray medium
Inventor: HARTLEY GILBERT SPENCER
IPC: E01C19/20
Filed: 1954-10-19
Abstract: 787,250. Powder distributers. FISONS PEST CONTROL, Ltd. Oct. 7, 1955 [Oct. 19, 1954], No. 30086/54. Class 6(1). [Also in Group XXIX] In a powder spraying machine the powder is fed through a pipe 10 which is rotated about its vertical axis and has an outlet spout 11 extending into a stationary vessel 3. Outlet tubes 4-7  extending tangentially from the vessel lead to conventional dispersing means and as the pipe 10 is rotated the spout sweeps past each outlet in turn and supplies powder thereto. Two or more spouts may be symmetrically arranged around the pipe axis. Alternatively the pipe may terminate in a hollow rotary cylindrical delivery member provided with peripheral slots whereby spray medium is flung through the slots into the vessel. Radial vanes on the rotary delivery member may act as an air-pump and the tubes 4-7 may be sufficiently wide to carry an air-powder mixture. The apparatus may be mounted on a vehicle.
Patent GB-1117377-A (GB)
Title: Auditoriums
IPC: E04H3/10
Filed: 1966-07-05
Abstract: 1,117,377. Auditoriums. W. E. ROSSMAN. 5 July, 1966 [5 Aug., 1965], No. 30128/66. Heading E1A. An auditorium comprises a main lecture area 10 with fixed seating 13 and a series of individual lecture areas P1, P2, P3, P4 which are disposed about the periphery of the seating 13 and are adapted to face either the main area 13 or their individual lecture platforms 15 to which end the seating 20 of the areas P1 &c. and an associated soundproof partitioning 16 are mounted on a rotary turntable.