baber/WOPTO huggingface dataset:
Patent GB-1363287-A (GB)
Title: Process for the manufacture of chrome chemicals
IPC: C01G37/14
Filed: 1971-10-19
Abstract: 1363287 Alkali metal bichromates; chromium trioxide; bisulphates ALLIED CHEMICAL CORP 19 Oct 1971 [19 Oct 1970] 48647/71 Heading C1A [Also in Division C7] An alkali metal bichromate is prepared by oxidizing chrome ore under alkaline conditions at an elevated temperature, leaching the alkali metal chromate containing product with an aqueous medium, acidifying the resultant yellow liquor with an aqueous alkali metal bisulphate solution containing hexavalent chromium and substantially free of trivalent chromium to convert at least part of the chromium in the liquor to alkali metal bichromate and separating the latter from the acidified (red) liquor, suitably by concentrating the liquor and then crystallizing out by-product alkali metal sulphate and then bichromate hydrate. Suitably, the yellow liquor is acidified with the bisulphate liquor at a pH below 5, e.g. 3À0-3À5. Prior to separation of the crystalline bichromate, the red liquor may be treated with an alkali metal persulphate, to convert halide impurities to halogen, at 50- 140 C. and a pH below 7. The bichromate may be reacted with sulphuric acid or oleum to yield chromic anhydride and by-product alkali metal bisulphate containing Cr<III> and Cr<VI> impurity. This bisulphate may be treated with an alkali metal persulphate to oxidize the Cr<III> to Cr<VI> and provide the bisulphate solution required above for acidifying the chromate yellow liquor. The persulphate used in treating the bichromate or the bisulphate may be prepared by electrolytic oxidation of an alkali metal bisulphate (see also Division C7) which may be that obtained as by-product in the chromic anhydride forming step or formed by reacting sulphuric acid with an alkali metal sulphate, e.g. that recovered from the red liquor. Specifications 1,363,288 and 1,363,289 are referred to.
Patent GB-1365016-A (GB)
Title: Stereoisomers of di-secondary butylamine
IPC: C07D207/337
Filed: 1972-10-23
Abstract: 1365016 Stereoisomers of di-sec.-butylamine WHITEFIN HOLDING SA 23 Oct 1972 [30 Oct 1971] 48782/72 Heading C2C The novel stereoisomers of di-sec-butylamine are prepared by reacting an optically active see.-butylamine with racemic sec.-butyl chloride, bromide, fluoride, p-toluenesulphonate or sulphate, and separating the thus formed S,S or R,R salt of di-sec.-butylamine from the corresponding salt of the S,R or R,S compound by fractional crystallization at a temperature of about 0‹ C. from a polar organic solvent, e.g. acetone, or an acetone-ethanol mixture, and converting the salts obtained to the free base.
Patent GB-1324279-A (GB)
Title: Coating heads
IPC: B41J2/025
Filed: 1970-10-15
Abstract: 1324279 Spray producers MEAD CORP 15 Oct 1970 [17 Nov 1969] 49139/70 Heading B2F A spraying assembly for use in coating has within it a sub assembly consisting of a filter plate 20 having a filter 23 and an orifice plate 40 having a series of orifices 41 therein, the sub assembly being shown in cross-section, a slot 31 in an inlet plate which has openings 32 concentric with the orifices 41, connecting the filter plate and the orifice plate, a clean-cut port 33 at the side of the slot 31 permitting the cleaning of the sub assembly before it is fitted to the remainder of the spraying assembly. This cleaning is by the pumping of a cleaning fluid (e.g. compressed air) through the filter plate 20 and out through the port 33, and optionally, the pumping of the fluid through the orifices. The rest of the assembly of which this sub assembly is a part consists of an inlet manifold (connected to the filter plate) with, at the outlet side of the orifice plate, a spacer plate, a charge ring plate (both with orifices concentric with those of the orifice plate) a clamp plate holding the assembly together, a pair of electrodes between which the spray drops pass and a catcher which catches drops deflected by the electrodes, i.e. those which are charged by the charge ring plate whose charge rings are each connected to a power supply. The apparatus may be used in printing.
Patent GB-1385418-A (GB)
Title: Preparation of 1,4-diaminophthalazine
IPC: C07D237/30
Filed: 1972-10-27
Abstract: 1385418 1,4-Diaminophthalazine DYNAMIT NOBEL AG 27 Oct 1972 [28 Oct 1971] 49790/72 Heading C2C 1,4-Diaminophthalazine having the tautomeric formulµ is prepared by reacting phthalonitrile with hydrazine in the presence of sulphur, the reaction being carried out in a solvent which is non- reactive with the phthalonitrile, hydrazine, sulphur, and 1,4-diaminophthalazine, and in which the phthalonitrile and hydrazine are soluble but the 1,4-diaminophthalazine is substantially insoluble, and the phthalonitrile: hydrazine : sulphur molar ratio being from 1 : 1 : 0À1 to 1 : 5 : 1. The hydrazine is preferably used in the form of hydrazine hydrate, Suitable solvents are dimethyl and diethyl formamide, dimethyl and diethyl acetamide, N- methyl - 2 - piperidone, N - methyl - 2 - pyrrolidone, N - ethyl - 2 - pyrrolidine, N - butyl - 2- pyrrolidone, dioxan, tetrahydrofuran, and acetone.
Patent GB-1535055-A (GB)
Title: Apparatus for displaying the results obtained on an agglutination support
IPC: G01N33/80
Filed: 1975-12-04
Abstract: 1535055 Blood typing apparatus READYMATIE SA 4 Dec 1975 [5 Dec 1974 3 Oct 1975] 49800/75 Heading G1B [Also in Divisions G4 and G5] In apparatus for use in blood typing, a plurality of electric switch control levers are set according as mixtures of the blood with respective sera agglutinate or not, and control display means to indicate the blood group and rhesus factor in conventional form i.e. using the symbols A, B, 0, +, -. In Fig. 1, pipettes 4-7 deliver on to an agglutination plate  9, drops of the blood mixed with anti-A serum, anti-B serum, anti-AB serum and anti-D serum respectively. 3 is an agitating device. According as the 4 drops agglutinate or not, respective switch levers 21-24 are manually moved up (for non- agglutination) or down (for agglutination) from a central neutral position, to light a respective lamp 13-16 (red, for non-agglutination) or a respective lamp 17-20 (red-dotted white, for agglutination), and finally, when a switch lever 37 is manually moved, the appropriate combination of lamps 25-29 shown is lit to indicate the blood type and rhesus factor. The lamps 13-16, 17-20 could be replaced by non-illuminable indicators, and each set of 4 could be replaced by a common such indicator. The agglutination plate 9 can be projected 107 (Fig. 5) on to a screen 106 which bears the symbols A, B, AB, D as shown. Four windows 122-125 are provided in the screen and behind each is a plaquette which can be moved horizontally (or vertically) into either of 2 positions to display an A or a bar (in the case of 122), a B or a bar (123), an O or a bar (124), and a + or a - (125), electromagnets moving arms to position the plaquettes to display the blood type and rhesus factor. The screen can be photographed (together with a portrait of the individual whose blood it is).
Patent GB-1261719-A (GB)
Title: Fluid flow control valves
Inventor: NUTTALL ROY
IPC: F16K1/38
Filed: 1968-10-22
Abstract: 1,261,719. Valves. ELCHECO CO. Ltd. 21 Oct., 1969 [22 Oct., 1968], No. 50069/68. Heading F2V. [Also in Division G3] Regulating the volume of fluid flow from an inlet 13 to an outlet 12 is achieved by appropriate positioning of an externally screw-threaded control member 17 which co-operates with an internally screw-threaded and tapered bore 11 of the valve body 10. It is said that the regulator is not intended to be used as a shut-off valve but should it be desired to obtain complete shut-off of fluid flow then this can be effected by moving the control member towards the inlet pipe 13 until the engaged threads bind completely before member 17 reaches a gasket 15. The valve body and member 17 are formed from P.T.F.E. with the control member 17 being strengthened by a metal insert 19.  In modifications, (Figs. 2 and 3, not shown), both the bore 11 and member 17 may be made to converge in a direction towards the inlet 13. Furthermore, the inlet may be disposed radially with respect to the threaded bore.
Patent GB-1334148-A (GB)
Title: Method of steam-drying a filter cake
IPC: B01D33/23
Filed: 1971-11-01
Abstract: 1334148 Steam drying of filter cake in rotary filter ENVIROTECH CORP 1 Nov 1971 [30 Oct 1970] 50688/71 Heading B1D Filter cake, formed on a rotary drum or discs 14 in passing through a bath of slurry while subject to an interior vacuum applied through receiver 22, is dried by applying superheated or saturated steam thereto in the space above the slurry, the steam being drawn through the filter cake by an interior vacuum applied through receiver 24, and optimum conditions (Fig. 3, not shown), wherein the steam is wholly condensed within the cake so that the condensation front just reaches the filter medium on the drum or discs where the cake is removed therefrom, are maintained by varying the suction applied through receiver 24 and possibly that applied through receiver 22. As shown, the temperature in receiver 24 is monitored at 72 and automatically controls the vacuums in both receivers by adjusting valves 66 and 63. A rise in temperature at 72, indicating that seam is penetrating the cake, causes valve 66 to close somewhat to reduce the suction drawing the steam through the cake and if necessary causes valve 63 to open thereby increasing the suction on the immersed parts of the discs to increase the cake thickness. The rotational speed is maintained constant as long as the slurry level in the housing 16, 18 remains between predetermined limits.
Patent GB-1399543-A (GB)
Title: Rotatable surface aerator for activated sludge effluent purification
IPC: B01F3/04
Filed: 1972-11-03
Abstract: 1399543 Surface aerators VIZGEPESZETI VALLALAT 3 Nov 1972 50830/72 Heading B1C A rotatable surface aerator comprises a bladed rotor the blades of which are adjustable to vary the effective diameter and/or length along the axis of rotation of the rotor. The rotor has a frusto-conical casing 1 with radial blades 3a to which are adjustably and detachably secured blade end plates 3b for varying the effective diameter of the rotor. A further set of blades 2 are mounted to extend both inwardly and outwardly of the casing through slots therein, the blades 2 being pivotally mounted at 11 on the casing so as to be adjustable inwardly and outwardly thereof by means of a vertically movable shaft 6 coupled to the blades by rods 4. Elongate slots (9, Fig 2, not shown) are provided in the wall of the casing 1 behind the blades 2 to allow effluent material to flow into the interior of the casing. The blades 3a, 3b are provided with apertures 10 to assist in the oxygenation of effluent being treated.
Patent GB-1060050-A (GB)
Title: Deeply hardenable liner member for grinding mill
IPC: C22C38/38
Filed: 1963-12-24
Abstract: A low alloy steel, which is highly hardenable when quenched from austenetizing temperatures at rates as low as 900 DEG F. per hour, comprises <TABS:1060050/C6-C7/1> the balance, apart from impurities (e.g. P, S and N), being iron. The austenetizing temperature may be 1550 DEG F. and the quenching may be by forced air cooling or by oil quenching.  The alloy may then be tempered at 400 DEG F.  This alloy is useful for making grinding mill liner elements.
Patent GB-1065700-A (GB)
Title: Improvements in or relating to breaking and ramming device and vehicles fitted therewith
IPC: B65F3/20
Filed: 1963-12-31
Abstract: 1,065,700. Loading refuse vehicles; rotary conveyers. R. A. ROUGEMONT. Dec. 31, 1963 [Jan. 4, 1963]. No. 51365/63. Headings B8A and B8E. Refuse is fed into a vehicle from a shoot O by a drum a provided with blades c rotated to break and ram the material as it is fed. The drum is mounted on a shaft b driven by a mechanism n at one or both ends and the blades are retractable in grooves into the drum between points c3 and c1 in order to pass under a retaining wall s. The reciprocation of the blades is effected by a double-acting fluidoperated jack f controlled by a reversal device r operated by stop members q placed to effect protrusion and retraction at the desired positions c1, c3. If an obstruction is met by the blades the jack f will yield allowing it to be passed. The position of the jack f and the blade operating linkage may be varied.
Patent GB-1270914-A (GB)
Title: Process for the impregnation dyeing of synthetic fibre materials
Inventor: NEEFF RUETGER
IPC: D06P1/90
Filed: 1970-10-29
Abstract: 1,270,914. Dyeing in organic solvents. FARBENFABRIKEN BAYER A.G. 29 Oct., 1970 [3 Nov., 1969], No. 51512/70. Heading D1B. [Also in Division C4]  Synthetic fibre materials are dyed by an impregnation process in an organic solvent with a dye of formula I in which R is hydroxyl or an amino group, R 1  a hydrogen atom or chlorine or bromine or a phenyloxy or phenylthio group or a group of formula II, III or IV or -S-B 1  X is a hydrogen atom or a hydroxy group or one X is a hydroxyl group and the other X is nitro or an amino group, R 2  is hydrogen or a C 1  to C 3  alkyl or C 1  to C 3  alkoxy group, m and n are each independantly 1 or 2, B and B 1  are C 1  to C 18  alkyl, cycloalkyl, or aralkyl group, with the proviso that the sum of the carbon atoms in the substituent or substituents B and B 1  is at least 4 and at most 18, the material subsequently being subjected to a heat treatment. The solvents used are preferably water immiscible and of boiling point 40-150‹C, e.g. tetrachloroethylene, trichloroethylene, 1,1,1-trichloroethane and 1,1,1- trichloropropane, or mixtures thereof. Polyolefines, polyesters, polycarbonates, polyamides, polyurethanes and cellulose triacetate may be dyed.
Patent GB-1108907-A (GB)
Title: A push-pull magnetic amplifier
Inventor: ROZBLAT MOISEY ARONOVICH
IPC: H03F9/02
Filed: 1965-12-08
Abstract: 1,108,907. Magnetic amplifiers. INSTITUT AVTOMATIKI I TELEMEKHANIKI. 8 Dec., 1965, No. 52004/65. Heading H3B. In order to offset the effect of even harmonics transferred from the A.C. supply circuit to the output windings 7, 8 of a magnetic amplifier a non-linear resistance rectifier 17 rectifies the even harmonics and delivers them to compensating windings 9, 10 on the cores 1, 2 of the amplifier. The load circuit includes load 14 shunted by capacitor 16 for smoothing the rectifier current flowing through the load 14 produced by a non-linear resistance 15 which is a phase-sensitive rectifier of the second harmonic of the supply U. The non-linear resistances may be constituted by silicon carbide resistors, two diodes connected in parallel opposition, or a rectifier bridge with a D.C. source, RC network or Zener diode connected across a diagonal.
Patent GB-1237486-A (GB)
Title: Dipyridylium quaternary dihalide halogen complexes and their use as defoliating agents
IPC: C07D471/14
Filed: 1969-10-23
Abstract: 1,237,486. Defoliants containing dipyridylium complexes. GREAT LAKES CORP. 23 Oct., 1969 [23 Oct., 1968], No. 52035/69. Heading C1B. [Also in Divisions A5 and C2] Defoliating compositions, particularly applicable to cotton plants, contain as active ingredient a compound of the formula in which the halogen of Hal 3  is chlorine, iodine and/or bromine, R and R<SP>1</SP> are optionally substituted alkyl C 1-8  radicals, the pyridyl groups may be additionally substituted by optionally substituted alkyl C 1-8  radicals and when the dipyridylium group is 2,2<SP>1</SP>-dipyridylium R and R<SP>1</SP> can also together form an optionally substituted C 1-4  alkylene radical, together with an inert carrier e.g. water, gasoline, kerosene or light oil. Preferred compounds are the dibromine complexes of N,N<SP>1</SP>-dimethyl-4,4<SP>1</SP>-dipyridylium dibromide (Paraquat) and of N,N<SP>1</SP>-ethylene-2,2<SP>1</SP>- dipyridylium dibromide (Diquat).
Patent GB-1350147-A (GB)
Title: Device for the display of a bottle
IPC: A47F7/28
Filed: 1971-11-09
Abstract: 1350147 Article display stand SEGURA VIUDAS S A 9 Nov 1971 [10 Nov 1970] 52063/  71 Heading A4T A bottle display stand simulating a rustic manual grape press comprises a base 1 with disc 2 and protuberance 3 entering the punt for centering the bottle, two columns 5 with top cross bar 6 carrying screw 10 with seating means 11 for bearing down on the bottle top, and supporting by chains 13 a collar 14 for encircling the bottle neck, the collar having lateral projections 15 entering slots 16 via cross slots 17. The body of the bottle resting on disc 2 is surround at the rear by planked grid 18, the bottle label being seen at the front, and a groove and spout 4 are formed in the disc 2. Disc 11 and the screw are turned by rod 19, removably carried at 20, 21, entering holes 12.
Patent GB-1148010-A (GB)
Title: Resin-bonded boards
IPC: C09J161/20
Filed: 1966-07-13
Abstract: 1,148,010. Timber substitutes. INSTYTUT TECHNOLGII DREWNA. 13 July, 1966 [13 July, 1965], No. 52176/68. Divided out of 1,148,009. Heading C3N. A board is made from lignocellulose bonded by urea-formaldehyde and/or melamine resin containing a mixture of ammonium or sodium fluoroborate, pentachlorophenol, and hexachlorocyclohyexane in a weight ratio of 30 : 45 : 25. 2À5-10 kg. of the mixture may be used per cubic metre of manufactured materials.
Patent GB-1311379-A (GB)
Title: Sealing ring
IPC: F16L17/08
Filed: 1971-11-11
Abstract: 1311379 Joint-making packing; pipe couplings PRESSURE SCIENCE Inc 11 Nov 1971 [7 Sept 1971] 52499/71 Headings F2B and F2G A metal sealing ring for a pipe connection is E-shaped in cross-section, the end arms of the section having a sinuous form terminating in convex portions which provide primary annular sealing lines 21, 21<SP>1</SP> when installed in a cavity, and the central arm of the section being formed as a loop having its two sides 24, 24<SP>1</SP> out of contact with each other and terminating on the same diameter as that of the primary annular sealing lines. Secondary annular sealing lines are provided at 22, 22<SP>1</SP>. A silver coating may be applied to the ring. The flanges of the pipe ends are clamped by a two-part V-section clamp 2, the two parts being bolted together.
Patent GB-1417564-A (GB)
Title: Process and apparatus for filtration of liquids that contain  microorganisms macromolecules or finely divided solid matter
IPC: C12M1/12
Filed: 1972-11-14
Abstract: 1417564 Ultrafiltration FRINGS GmbH 14 Nov 1972 [26 Nov 1971] 52599/72 Headings B1D and B1X Aspherical particles, such as microorganisms or macromolecules, are removed from a liquid by a continuous filtration process comprising moving the liquid with a velocity (v) parallel to the smooth surface of an ultra filtration membrane of average pore diameter 0.1 to 10 microns and maintaining a laminer flow parallel to the surface and a hydrostatic pressure of less than 3 metres of water perpendicular to the surface whilst adjusting the velocity such that the hydrodynamic pressure force v<SP>2</SP>/zg acting parallel to the surface exceeds the sliding friction force of the particles on the surface. The latter can be adjusted by the addition of particles of filter and, e.g. wood pulp, the masses of which are at least a hundred times greater than those of the particles to be filtered. Unfiltered liquid may be recycled past the membrane, the filter aid being added to the recycle liquid.  An apparatus for carrying out this process comprises a feed container 3 for liquid to be filtered from which liquid is fed by pump 5 to filter 7 which comprises an open-ended rectangular passage, the opposite side walls of which are formed of the membranes 20. Means are provided for measuring and controlling the hydrostatic pressure in the filter, for maintaining such pressure perpendicular to the membrane surfaces and for controlling the velocity of the liquid in the passage parallel to the membrane surfaces and a return line 8 feeds unfiltered liquid back to feed container 3. Suitably, the membranes 20 are mounted on support plates 22 held in recesses 23 formed in solid filter plates 21 which define the passage. Outlets 24 are provided for filtrate and lead by line 9 to filtrate storage container 10, the filtrate then being periodically removed by pump 12, actuated by level control electrodes 11, to final collection container 14. A photoelectric gate 27 moniters the turbidity of filtrate in line 13 as protection against a defective filter element. Container 3 is itself fed from storage reservoir 1 in response to level controller 4 and liquid cooling or heating means 6 are provided upstream of the filter element.  The Examples describe the removal of bacteria from vinegar with and without the use of filter aid.
Patent GB-1196678-A (GB)
Title: Improvements in Contraceptive Devices
IPC: A61F6/04
Filed: 1967-11-21
Abstract: 1,196,678. Contraceptive devices. CHEMOLIMPEX MAGYAR VEGYIARU KULKERESKEDELMI VALLALAT. 21 Nov., 1967 [24 April, 1967], No. 53005/67. Heading ASR. [Also in Division C3] A water-soluble contraceptive and antivenereal device comprises a film. or moulded article of water-soluble polyvinyl alcohol in admixture with and/or coated with a water-soluble spermicide, the film being a discrete piece of a size suitable for introduction into the vagina. The spermicide may comprise cetylpyridinium, bromide, nonylphenoxypolyethoxyethanol, triisopropylphenoxypolyethoxyethanol, hexylresorcinal, or pherylmercuric acetate. The device may comprise a piece of polyvinyl alcohol film material 4 x 4 cm. impregnated and coated with cetylpyridinium bromide and used as a vagical suppository and the cetylpyridinium bromide used for the impregnation may be in an aqueous solution of polyvinyl alcohol. The device may alternatively comprise a cap-shaped member 3-4 cm. diameter and 2 cm. height moulded from polyvinyl alcohol material containing the spermicide.
Patent GB-1403204-A (GB)
Title: Magnetic recording media and a process for their production
IPC: C09D5/23
Filed: 1972-11-17
Abstract: 1403204 Magnetic recording medium BADISCHE-ANILIN- & SODA-FABRIK AG 17 Nov 1972 [20 Nov 1971] 53137/72 Heading C3R A magnetic recording medium comprises a non-magnetic support and applied thereto a magnetic layer comprising a finely divided magnetic pigment dispersed in a polyurethanecontaining binder mixture, the latter consisting of (a) 15-80 parts by weight of a soluble thermoplastic polyester urethane containing practically no hydroxyl groups and prepared from an aliphatic dicarboxylic acid of 4-6 carbon atoms, an aliphatic diol of 3-10 carbon atoms and a diisocyanate of 8-20 carbon atoms and (b) 20-85 parts by weight of a polyvinyl formal. Examples describe the dispersion of acicular γ-FeO 2 O 3  in polymeric media, orientation of such particles in a magnetic field, and deposition on a polyethylene terephthalate backing tape.
Patent GB-1230439-A (GB)
IPC: F24C7/04
Filed: 1968-11-08
Abstract: 1,230,439. Infra-red heaters. HERAEUSSCHOTT QUARZSCHMELZE G.m.b.H. 8 Nov., 1968 [8 Nov., 1967], No. 53171/68. Heading H5H. A radiant heater comprises a concave reflector 1 of opaque fused silica provided with a reflecting coating 2 of gold and housing the radiating element 3, which is removably inserted in the reflector and is composed of two sheaths 3a, 3b, of transparent fused silica housing heating coils 4a, 4b, and has two metal clamps 5 holding the element 3 in the reflector 1. Both ends of the heater are shut off by heat resistant stoppers 6 with tubes 8 therein for passing cleansing gas through the cavity between the element 3 and coating 2. The element 3 may alternatively comprise one sheath or more than two sheaths, each housing a heating coil. A plurality of the heaters can be assembled, e.g. in two adjacent rows of three heaters, Fig. 3 (not shown), to provide a radiant heating strip. Coils 4a, 4b, are in series or in parallel as required. Reference has been directed by the Comptroller to Specification 1,045,439.